fix: restrict user email visibility

Co-Authored-By: gpt-5.6-sol <noreply@openai.com>

.gitea/actions/setup/action.yml

@@ -0,0 +1,9 @@
+name: Setup
+description: Set up the Node version required by this repository. Requires actions/checkout to have already run.
+
+runs:
+  using: composite
+  steps:
+    - uses: actions/setup-node@v4
+      with:
+        node-version-file: .node-version

.gitea/workflows/ci.yml

@@ -0,0 +1,124 @@
+name: CI
+
+on:
+  pull_request:
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  install-and-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ./.gitea/actions/setup
+
+      - name: Clean install dependencies
+        run: npm ci
+
+      - name: Production build
+        run: npm run build
+
+      - name: Archive dependencies
+        run: tar -czf node_modules.tar.gz node_modules
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: node_modules-${{ github.run_id }}
+          path: node_modules.tar.gz
+
+      - name: Archive build artifacts
+        run: tar -czf build-artifacts.tar.gz dist
+
+      - uses: actions/upload-artifact@v3
+        with:
+          name: build-artifacts-${{ github.run_id }}
+          path: build-artifacts.tar.gz
+
+  lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ./.gitea/actions/setup
+
+      - name: Clean install dependencies
+        run: npm ci
+
+      - name: Lint
+        run: npm run lint
+
+  format:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ./.gitea/actions/setup
+
+      - name: Clean install dependencies
+        run: npm ci
+
+      - name: Check formatting
+        run: npm run format:check
+
+  typecheck-source:
+    runs-on: ubuntu-latest
+    needs: install-and-build
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ./.gitea/actions/setup
+
+      - uses: actions/download-artifact@v3
+        with:
+          name: node_modules-${{ github.run_id }}
+
+      - uses: actions/download-artifact@v3
+        with:
+          name: build-artifacts-${{ github.run_id }}
+
+      - name: Restore dependencies and build artifacts
+        run: |
+          tar -xzf node_modules.tar.gz
+          tar -xzf build-artifacts.tar.gz
+
+      - name: Typecheck source
+        run: npm run typecheck
+
+  typecheck-tests:
+    runs-on: ubuntu-latest
+    needs: install-and-build
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ./.gitea/actions/setup
+
+      - uses: actions/download-artifact@v3
+        with:
+          name: node_modules-${{ github.run_id }}
+
+      - name: Restore dependencies
+        run: tar -xzf node_modules.tar.gz
+
+      - name: Typecheck tests
+        run: npm run typecheck:test
+
+  test:
+    runs-on: ubuntu-latest
+    needs: install-and-build
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: ./.gitea/actions/setup
+
+      - uses: actions/download-artifact@v3
+        with:
+          name: node_modules-${{ github.run_id }}
+
+      - name: Restore dependencies
+        run: tar -xzf node_modules.tar.gz
+
+      - name: Run full test suite
+        run: npm test

.node-version

@@ -0,0 +1 @@
+22

.prettierignore

@@ -0,0 +1,2 @@
+dist
+node_modules

eslint.config.js

@@ -0,0 +1,22 @@
+import eslint from "@eslint/js";
+import tseslint from "typescript-eslint";
+
+export default tseslint.config(
+  {
+    ignores: ["dist/**", "node_modules/**"],
+  },
+  eslint.configs.recommended,
+  tseslint.configs.recommended,
+  {
+    rules: {
+      "no-control-regex": "off",
+      "no-empty": "off",
+      "no-fallthrough": "off",
+      "prefer-const": "off",
+      "@typescript-eslint/no-empty-object-type": "off",
+      "@typescript-eslint/no-explicit-any": "off",
+      "@typescript-eslint/no-non-null-asserted-optional-chain": "off",
+      "@typescript-eslint/no-unused-vars": "off",
+    },
+  },
+);

package.json

@@ -9,7 +9,10 @@
     "abode-migrate": "dist/bin/abode-migrate.cjs",
     "abode-repl": "dist/bin/abode-repl.cjs",
     "abode-web": "dist/bin/abode-web.cjs",
-    "abode-tui": "dist/bin/abode-tui.cjs"
+    "abode-tui": "dist/bin/abode-tui.cjs",
+    "abode-export": "dist/bin/abode-export.cjs",
+    "abode-import": "dist/bin/abode-import.cjs",
+    "abode-inspect": "dist/bin/abode-inspect.cjs"
   },
   "scripts": {
     "repl": "tsx --import ./src/meta/dev/register.ts",
@@ -18,8 +21,19 @@
     "abode-web": "tsx --import ./src/meta/dev/register.ts --import ./src/meta/dev/webhot.ts src/bin/abode-web.ts",
     "abode-tui": "tsx --import ./src/meta/dev/register.ts --import ./src/meta/dev/silenthot.ts src/bin/abode-tui.ts",
     "abode-sources": "tsx --import ./src/meta/dev/register.ts src/bin/abode-sources.ts",
+    "abode-export": "tsx --import ./src/meta/dev/register.ts src/bin/abode-export.ts",
+    "abode-import": "tsx --import ./src/meta/dev/register.ts src/bin/abode-import.ts",
+    "abode-inspect": "tsx --import ./src/meta/dev/register.ts src/bin/abode-inspect.ts",
     "build": "NODE_ENV=production npm run build:impl",
-    "build:impl": "rm -rf dist && tsx node_modules/.bin/webpack && chmod +x dist/bin/* && chmod -x dist/bin/*.*"
+    "build:impl": "rm -rf dist && tsx node_modules/.bin/webpack && chmod +x dist/bin/* && chmod -x dist/bin/*.*",
+    "test": "node --import tsx/esm --import ./src/meta/dev/register.ts --test $(find test -name '*.test.ts' | sort)",
+    "test:backends": "node --import tsx/esm --import ./src/meta/dev/register.ts --test $(find test/backends -name '*.test.ts' | sort)",
+    "test:shared": "node --import tsx/esm --import ./src/meta/dev/register.ts --test $(find test/backends -name 'index.test.ts' | sort)",
+    "test:tools": "node --import tsx/esm --import ./src/meta/dev/register.ts --test $(find test/tools -name '*.test.ts' | sort)",
+    "typecheck": "tsc --noEmit",
+    "typecheck:test": "tsc --noEmit -p tsconfig.test.json",
+    "lint": "eslint .",
+    "format:check": "prettier --check ."
   },
   "dependencies": {
     "@koa/bodyparser": "^6.0.0",
@@ -38,20 +52,25 @@
     "react-redux": "^9.2.0"
   },
   "devDependencies": {
+    "@eslint/js": "^9.39.5",
     "@types/better-sqlite3": "^7.6.13",
     "@types/koa": "^3.0.0",
     "@types/koa__router": "^12.0.4",
+    "@types/pg": "^8.20.0",
     "@types/react": "^19.1.12",
     "@types/webpack-bundle-analyzer": "^4.7.0",
     "copy-webpack-plugin": "^13.0.1",
     "css-loader": "^7.1.2",
     "dynohot": "^2.1.1",
+    "eslint": "^9.39.5",
     "mini-css-extract-plugin": "^2.9.4",
+    "prettier": "^3.6.2",
     "raw-loader": "^4.0.2",
     "scss-loader": "^0.0.1",
     "ts-loader": "^9.5.4",
     "tsx": "^4.20.5",
     "typescript": "^5.9.2",
+    "typescript-eslint": "^8.65.0",
     "val-loader": "^6.0.0",
     "webpack-bundle-analyzer": "^4.10.2",
     "webpack-cli": "^6.0.1"

src/bin/abode-export.ts

@@ -0,0 +1,97 @@
+import { createWriteStream } from "node:fs";
+import { pipeline } from "node:stream/promises";
+import { getDbInterface } from "../db/index.js";
+import { isExportable, type ExportFilter } from "../db/types/ExportImport.js";
+import { isExportKind } from "../db/export/filter.js";
+
+const args = process.argv.slice(2);
+
+function printUsage(err: boolean | string = false): never {
+  const log = (err ? console.error : console.log).bind(console);
+  if (typeof err === "string") {
+    log(`Error: ${err}`);
+    log("");
+  }
+  log("Usage:");
+  log("\tabode-export --help");
+  log(
+    "\tabode-export <database-url> [--kinds=user,abode,...] [--exclude-kinds=...] \\",
+  );
+  log("\t             [--abodes=aid,...] [--users=uid,...] [--out=file|-]");
+  process.exit(err ? 1 : 0);
+}
+
+if (["-h", "--help", "help"].some((x) => args.includes(x))) printUsage();
+
+let url: string | undefined;
+const flags = new Map<string, string>();
+for (const arg of args) {
+  if (arg.startsWith("--")) {
+    const eq = arg.indexOf("=");
+    if (eq === -1) printUsage(`invalid flag: ${arg}`);
+    flags.set(arg.slice(2, eq), arg.slice(eq + 1));
+  } else if (url === undefined) {
+    url = arg;
+  } else {
+    printUsage("too many arguments");
+  }
+}
+if (!url) printUsage("missing <database-url>");
+
+const knownFlags = ["kinds", "exclude-kinds", "abodes", "users", "out"];
+for (const key of flags.keys()) {
+  if (!knownFlags.includes(key)) printUsage(`unknown flag: --${key}`);
+}
+
+function parseList(value: string | undefined): string[] | undefined {
+  if (value === undefined) return undefined;
+  return value.split(",").filter(Boolean);
+}
+function parseKinds(value: string | undefined) {
+  const list = parseList(value);
+  if (!list) return undefined;
+  const bad = list.filter((k) => !isExportKind(k));
+  if (bad.length) printUsage(`invalid kind(s): ${bad.join(", ")}`);
+  return list.filter(isExportKind);
+}
+
+const filter: ExportFilter = {};
+const kinds = parseKinds(flags.get("kinds"));
+if (kinds) filter.kinds = kinds;
+const excludeKinds = parseKinds(flags.get("exclude-kinds"));
+if (excludeKinds) filter.excludeKinds = excludeKinds;
+const abodes = parseList(flags.get("abodes"));
+if (abodes) filter.abodes = abodes;
+const users = parseList(flags.get("users"));
+if (users) filter.users = users;
+
+const db = await getDbInterface(url);
+if (!isExportable(db)) {
+  console.error(`Error: backend '${db.name}' does not support export`);
+  process.exit(1);
+}
+
+const out = flags.get("out") ?? "-";
+const dest =
+  out === "-" ? process.stdout : createWriteStream(out, { encoding: "utf8" });
+
+const ac = new AbortController();
+const onSignal = () => ac.abort();
+process.on("SIGINT", onSignal);
+process.on("SIGTERM", onSignal);
+
+try {
+  await pipeline(db.export({ filter, signal: ac.signal }), dest);
+} catch (e) {
+  if (ac.signal.aborted) {
+    console.error("Export aborted");
+    process.exit(130);
+  }
+  throw e;
+} finally {
+  process.off("SIGINT", onSignal);
+  process.off("SIGTERM", onSignal);
+  await db.close().catch(() => {});
+}
+
+process.exit(0);

src/bin/abode-import.ts

@@ -0,0 +1,111 @@
+import { createReadStream } from "node:fs";
+import { getDbInterface } from "../db/index.js";
+import { isExportKind } from "../db/export/filter.js";
+import { isImportable, type ExportFilter } from "../db/types/ExportImport.js";
+
+const args = process.argv.slice(2);
+
+function printUsage(err: boolean | string = false): never {
+  const log = (err ? console.error : console.log).bind(console);
+  if (typeof err === "string") {
+    log(`Error: ${err}`);
+    log("");
+  }
+  log("Usage:");
+  log("\tabode-import --help");
+  log("\tabode-import <database-url> <input-file|-> [--kinds=...] \\");
+  log(
+    "\t             [--exclude-kinds=...] [--abodes=aid,...] [--users=uid,...]",
+  );
+  log("");
+  log(
+    "The target must be a local backend (sqlite or postgres), already migrated",
+  );
+  log("(run abode-migrate first). Remote (api) targets are not importable.");
+  process.exit(err ? 1 : 0);
+}
+
+if (["-h", "--help", "help"].some((x) => args.includes(x))) printUsage();
+
+const positional: string[] = [];
+const flags = new Map<string, string>();
+for (const arg of args) {
+  if (arg.startsWith("--")) {
+    const eq = arg.indexOf("=");
+    if (eq === -1) printUsage(`invalid flag: ${arg}`);
+    flags.set(arg.slice(2, eq), arg.slice(eq + 1));
+  } else {
+    positional.push(arg);
+  }
+}
+
+const url = positional[0];
+const input = positional[1];
+if (!url) printUsage("missing <database-url>");
+if (!input) printUsage("missing <input-file|->");
+if (positional.length > 2) printUsage("too many arguments");
+
+const knownFlags = ["kinds", "exclude-kinds", "abodes", "users"];
+for (const key of flags.keys()) {
+  if (!knownFlags.includes(key)) printUsage(`unknown flag: --${key}`);
+}
+
+function parseList(value: string | undefined): string[] | undefined {
+  if (value === undefined) return undefined;
+  return value.split(",").filter(Boolean);
+}
+function parseKinds(value: string | undefined) {
+  const list = parseList(value);
+  if (!list) return undefined;
+  const bad = list.filter((k) => !isExportKind(k));
+  if (bad.length) printUsage(`invalid kind(s): ${bad.join(", ")}`);
+  return list.filter(isExportKind);
+}
+
+const filter: ExportFilter = {};
+const kinds = parseKinds(flags.get("kinds"));
+if (kinds) filter.kinds = kinds;
+const excludeKinds = parseKinds(flags.get("exclude-kinds"));
+if (excludeKinds) filter.excludeKinds = excludeKinds;
+const abodes = parseList(flags.get("abodes"));
+if (abodes) filter.abodes = abodes;
+const users = parseList(flags.get("users"));
+if (users) filter.users = users;
+
+// Resolve the backend generically. Import lives on the local backends (sqlite,
+// postgres); the remote (api) interface has no `import`, so `isImportable`
+// keeps it from ever running over HTTP.
+const db = await getDbInterface(url);
+if (!isImportable(db)) {
+  console.error(`Error: backend '${db.name}' does not support import`);
+  await db.close().catch(() => {});
+  process.exit(1);
+}
+
+const source = input === "-" ? process.stdin : createReadStream(input);
+
+const ac = new AbortController();
+const onSignal = () => ac.abort();
+process.on("SIGINT", onSignal);
+process.on("SIGTERM", onSignal);
+
+try {
+  const result = await db.import(source, { filter, signal: ac.signal });
+  const total = Object.values(result.counts).reduce((a, b) => a + b, 0);
+  console.log(`Imported ${total} record(s):`);
+  for (const [kind, count] of Object.entries(result.counts)) {
+    console.log(`- ${kind}: ${count}`);
+  }
+} catch (e) {
+  if (ac.signal.aborted) {
+    console.error("Import aborted; no changes committed");
+    process.exit(130);
+  }
+  throw e;
+} finally {
+  process.off("SIGINT", onSignal);
+  process.off("SIGTERM", onSignal);
+  await db.close().catch(() => {});
+}
+
+process.exit(0);

src/bin/abode-inspect.ts

@@ -0,0 +1,68 @@
+import { createReadStream } from "node:fs";
+import { inspectExportStream } from "../db/export/inspect.js";
+import { isExportKind } from "../db/export/filter.js";
+import type { ExportKind } from "../db/types/ExportImport.js";
+
+const args = process.argv.slice(2);
+
+function printUsage(err: boolean | string = false): never {
+  const log = (err ? console.error : console.log).bind(console);
+  if (typeof err === "string") {
+    log(`Error: ${err}`);
+    log("");
+  }
+  log("Usage:");
+  log("\tabode-inspect --help");
+  log("\tabode-inspect <input-file|-> [--stop-after=note,...]");
+  process.exit(err ? 1 : 0);
+}
+
+if (["-h", "--help", "help"].some((x) => args.includes(x))) printUsage();
+
+let input: string | undefined;
+const flags = new Map<string, string>();
+for (const arg of args) {
+  if (arg.startsWith("--")) {
+    const eq = arg.indexOf("=");
+    if (eq === -1) printUsage(`invalid flag: ${arg}`);
+    flags.set(arg.slice(2, eq), arg.slice(eq + 1));
+  } else if (input === undefined) {
+    input = arg;
+  } else {
+    printUsage("too many arguments");
+  }
+}
+if (!input) printUsage("missing <input-file|->");
+
+for (const key of flags.keys()) {
+  if (key !== "stop-after") printUsage(`unknown flag: --${key}`);
+}
+
+let stopAfterKinds: ExportKind[] | undefined;
+const rawStop = flags.get("stop-after");
+if (rawStop !== undefined) {
+  const list = rawStop.split(",").filter(Boolean);
+  const bad = list.filter((k) => !isExportKind(k));
+  if (bad.length) printUsage(`invalid kind(s): ${bad.join(", ")}`);
+  stopAfterKinds = list.filter(isExportKind);
+}
+
+const source = input === "-" ? process.stdin : createReadStream(input);
+
+const { counts, meta } = await inspectExportStream(source, { stopAfterKinds });
+
+if (meta) {
+  console.log("Meta:");
+  console.log(`- format version: ${meta.v ?? "?"}`);
+  console.log(`- exported at: ${meta.exportedAt ?? "?"}`);
+  console.log(`- source backend: ${meta.source ?? "?"}`);
+  if (meta.filter && Object.keys(meta.filter).length) {
+    console.log(`- effective filter: ${JSON.stringify(meta.filter)}`);
+  }
+}
+console.log("Counts:");
+const entries = Object.entries(counts);
+if (!entries.length) console.log("(none)");
+for (const [kind, count] of entries) console.log(`- ${kind}: ${count}`);
+
+process.exit(0);

src/bin/abode-migrate.ts

@@ -40,7 +40,7 @@ switch (cmd) {
     if (!current.length) console.log("(none)");
     for (const migration of current) {
       console.log(
-        `- ${migration.id} (${migration.name}) applied at ${migration.applied_at}`
+        `- ${migration.id} (${migration.name}) applied at ${migration.applied_at}`,
       );
     }
     break;
@@ -73,7 +73,7 @@ switch (cmd) {
         password: await hashPassword("changeme"),
       });
       console.log(
-        `Created user 'admin@codi.moe' (${uid}) with password 'changeme' and admin flag`
+        `Created user 'admin@codi.moe' (${uid}) with password 'changeme' and admin flag`,
       );
     }
     users = await db.listUsers();
@@ -88,7 +88,7 @@ switch (cmd) {
           expires_at: null,
         });
         console.log(
-          `Created apikey '${token}' (${apikey.kid}) with permissions admin, all and no expiry`
+          `Created apikey '${token}' (${apikey.kid}) with permissions admin, all and no expiry`,
         );
       }
     }

src/bin/abode-sources.ts

@@ -21,7 +21,7 @@ if (args.length > 1) printUsage("too many arguments");
 
 console.log(
   `Compiled with ${compiledSources.length} sources:`,
-  compiledSources.join(", ")
+  compiledSources.join(", "),
 );
 
 const url = args[0] ?? "abode://";
@@ -31,7 +31,7 @@ for (const source of sources) {
   console.log(`- ${source.name}`);
   console.log(
     "  - protocols:",
-    source.protocols.map((x) => `'${x}'`).join(" ")
+    source.protocols.map((x) => `'${x}'`).join(" "),
   );
   const match = source.checkUrl(url);
   console.log(`  - matches url: ${match}`);
@@ -41,7 +41,7 @@ for (const source of sources) {
       console.log(
         `  - generates an interface named ${db.name} ${
           db.backend ? "with" : "without"
-        } backend`
+        } backend`,
       );
       await db.close().catch(console.error);
     } catch (e) {
@@ -53,7 +53,7 @@ for (const source of sources) {
       console.log(
         `  - generates a migrator knowing ${
           db.listAvailableMigrations().length
-        } migrations`
+        } migrations`,
       );
     } catch (e) {
       console.error(e);

src/bin/abode-tui.ts

@@ -30,7 +30,7 @@ const bgColor = await new Promise<string>((ok, ko) => {
   process.stdin.once("data", (chunk) => {
     const result = chunk.toString("utf8");
     const match = result.match(
-      /^\u001b]11;rgb:([0-9a-fA-F]+)\/([0-9a-fA-F]+)\/([0-9a-fA-F]+)$/
+      /^\u001b]11;rgb:([0-9a-fA-F]+)\/([0-9a-fA-F]+)\/([0-9a-fA-F]+)$/,
     );
     if (!match) return ko("Didn't recognize terminal bg color");
     const [r, g, b] = match
@@ -78,7 +78,7 @@ if (import.meta.hot) {
 
   import.meta.hot.accept("../tui/App.js", (mod) => {
     fullscreenApp.instance.rerender(
-      (mod.app as typeof app)({ db, bgColor, store })
+      (mod.app as typeof app)({ db, bgColor, store }),
     );
   });
 }

src/db/api/ApiInterface.ts

@@ -25,8 +25,11 @@ import type {
   CreateUser,
   UpdateUser,
 } from "../types/User.js";
+import { Readable } from "node:stream";
+import type { ReadableStream as WebReadableStream } from "node:stream/web";
+import type { Exportable, ExportOptions } from "../types/ExportImport.js";
 
-export class ApiInterface implements DbInterface {
+export class ApiInterface implements DbInterface, Exportable {
   #root: string;
   #headers: Record<string, string>;
   #readonly: boolean;
@@ -39,7 +42,7 @@ export class ApiInterface implements DbInterface {
     }: {
       headers?: Record<string, string>;
       readonly?: boolean;
-    } = {}
+    } = {},
   ) {
     if (root.endsWith("/")) root = root.slice(0, -1);
     this.#root = root;
@@ -55,7 +58,7 @@ export class ApiInterface implements DbInterface {
         .map((part) => {
           if (part.startsWith(":")) {
             const value = remaining.get(part.slice(1));
-            remaining.delete(part);
+            remaining.delete(part.slice(1));
             if (value === undefined)
               throw new Error(`Missing ${part} in params`);
             return encodeURIComponent(value);
@@ -82,7 +85,7 @@ export class ApiInterface implements DbInterface {
       params?: Record<string, string>;
       body?: unknown;
       headers?: Record<string, string>;
-    } = {}
+    } = {},
   ): Promise<T> {
     const resolvedHeaders = { ...this.#headers, ...headers };
     if (body !== undefined) {
@@ -113,6 +116,7 @@ export class ApiInterface implements DbInterface {
           throw new Error(`${res.status} ${res.statusText} ${text}`);
       }
     }
+    if (res.status === 204) return undefined as T;
     return res.json();
   }
 
@@ -246,7 +250,7 @@ export class ApiInterface implements DbInterface {
     });
   }
   async createApikey(
-    apikey: CreateApikey
+    apikey: CreateApikey,
   ): Promise<[ClientApikey, `at_${string}`]> {
     this.#checkReadonly();
     const { apikey: key, token } = await this.#call<{
@@ -266,24 +270,74 @@ export class ApiInterface implements DbInterface {
   }
 
   async listNotes(): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/notes");
   }
   async getNoteById(nid: string): Promise<Note> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/notes/:nid", { params: { nid } });
   }
   async deleteNoteById(nid: string): Promise<void> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    await this.#call("DELETE", "/notes/:nid", { params: { nid } });
   }
-  async createNote(note: CreateNote): Promise<Note> {
-    throw new Error("Unimplemented");
+  async createNote(note: CreateNote, _ctx: { uid: string }): Promise<Note> {
+    this.#checkReadonly();
+    return this.#call("POST", "/abodes/:aid/notes", {
+      params: { aid: note.aid },
+      body: note,
+    });
   }
-  async updateNote(note: UpdateNote): Promise<Note> {
-    throw new Error("Unimplemented");
+  async updateNote(note: UpdateNote, _ctx: { uid: string }): Promise<Note> {
+    this.#checkReadonly();
+    return this.#call("PATCH", "/notes/:nid", {
+      params: { nid: note.nid },
+      body: note,
+    });
   }
   async listNotesByAbodeId(aid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/abodes/:aid/notes", { params: { aid } });
   }
   async listNotesByUserId(uid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return this.#call("GET", "/users/:uid/notes", { params: { uid } });
+  }
+
+  export(options: ExportOptions = {}): NodeJS.ReadableStream {
+    // Streaming NDJSON bypasses the JSON-only `#call` helper: the raw
+    // `fetch` gets the caller's `signal` directly, so aborting cancels the
+    // underlying HTTP request itself.
+    const { filter, signal } = options;
+    const sp = new URLSearchParams();
+    if (filter?.kinds) sp.set("kinds", filter.kinds.join(","));
+    if (filter?.excludeKinds)
+      sp.set("excludeKinds", filter.excludeKinds.join(","));
+    if (filter?.abodes) sp.set("abodes", filter.abodes.join(","));
+    if (filter?.users) sp.set("users", filter.users.join(","));
+    const query = sp.toString();
+    const url = this.#root + "/export" + (query ? `?${query}` : "");
+    const headers = { ...this.#headers };
+
+    async function* generate(): AsyncGenerator<Buffer | Uint8Array> {
+      const res = await fetch(url, { method: "GET", headers, signal });
+      if (!res.ok) {
+        const text = await res.text();
+        switch (res.status) {
+          case 400:
+            throw new InvalidAbodeError();
+          case 401:
+            throw new NotAuthorizedAbodeError();
+          case 403:
+            throw new ReadonlyAbodeError();
+          case 404:
+            throw new NotFoundAbodeError();
+          case 409:
+            throw new ConflictAbodeError();
+          default:
+            throw new Error(`${res.status} ${res.statusText} ${text}`);
+        }
+      }
+      if (!res.body) return;
+      yield* Readable.fromWeb(res.body as WebReadableStream<Uint8Array>);
+    }
+
+    return Readable.from(generate());
   }
 }

src/db/api/getdb.dyn.ts

@@ -3,7 +3,7 @@ import { apiProtocols } from "./url.js";
 
 const getApi = () =>
   import(/* webpackChunkName: 'dbsource-api' */ "./getdb.static.js").then(
-    (x) => x.default
+    (x) => x.default,
   );
 
 const getApiDynamic: GetDbDynamic = {

src/db/api/url.ts

@@ -17,7 +17,9 @@ export function parseApiUrl(url: string) {
   urlObj.href = urlObj.href.replace(/^abode\+/, "");
   const readonly = (urlObj.searchParams.get("readonly") ?? "0") !== "0";
   const headers = Object.fromEntries(
-    [...urlObj.searchParams.entries()].filter(([param]) => param !== "readonly")
+    [...urlObj.searchParams.entries()].filter(
+      ([param]) => param !== "readonly",
+    ),
   );
   if (urlObj.username) {
     headers["Authorization"] =
@@ -26,7 +28,7 @@ export function parseApiUrl(url: string) {
         [
           decodeURIComponent(urlObj.username),
           decodeURIComponent(urlObj.password),
-        ].join(":")
+        ].join(":"),
       );
     urlObj.username = "";
     urlObj.password = "";

src/db/dbSources.dyn.ts

@@ -15,7 +15,7 @@ export async function getDbSources(url: string): Promise<GetDbStatic[]> {
           .catch(() => null)
           .then((dbSource) => {
             if (dbSource) dbSources.push(dbSource);
-          })
+          }),
       );
     }
   }

src/db/dbSources.shared.ts

@@ -3,7 +3,7 @@ import type { GetDbStatic } from "./types/GetDb.js";
 let rawGetDbSources: typeof getDbSources | undefined = undefined;
 const getGetDbSources = () =>
   import(/* webpackChunkName: 'dbsources' */ "./dbSources.static.js").then(
-    (x) => x.getDbSources
+    (x) => x.getDbSources,
   );
 
 export async function getDbSources(url: string): Promise<GetDbStatic[]> {

src/db/dbSources.static.ts

@@ -1,8 +1,9 @@
 import getApiStatic from "./api/getdb.static.js";
+import getPgStatic from "./postgres/getdb.static.js";
 import getSqliteStatic from "./sqlite/getdb.static.js";
 import type { GetDbStatic } from "./types/GetDb.js";
 
-const dbSources: GetDbStatic[] = [getSqliteStatic, getApiStatic];
+const dbSources: GetDbStatic[] = [getSqliteStatic, getPgStatic, getApiStatic];
 export async function getDbSources(url: string): Promise<GetDbStatic[]> {
   void url;
   return dbSources;

src/db/export/filter.ts

@@ -0,0 +1,82 @@
+import {
+  EXPORT_KIND_ORDER,
+  type ExportFilter,
+  type ExportKind,
+} from "../types/ExportImport.js";
+
+const EXPORT_KINDS = new Set<ExportKind>(EXPORT_KIND_ORDER);
+
+export function isExportKind(x: unknown): x is ExportKind {
+  return typeof x === "string" && EXPORT_KINDS.has(x as ExportKind);
+}
+
+/** Whether a `kind` survives a filter's `kinds`/`excludeKinds` rules. */
+export function kindAllowed(
+  filter: ExportFilter | undefined,
+  kind: ExportKind,
+): boolean {
+  if (!filter) return true;
+  if (filter.kinds && !filter.kinds.includes(kind)) return false;
+  if (filter.excludeKinds && filter.excludeKinds.includes(kind)) return false;
+  return true;
+}
+
+/**
+ * Whether an individual record passes a filter's `abodes`/`users`/`apikeys`
+ * allowlists. `abodes` scopes abode/resident/note (by aid); `users` scopes user
+ * (by uid); `apikey` records are scoped by `apikeys` when present, else by
+ * `users`. An absent allowlist means "unrestricted".
+ */
+export function recordAllowed(
+  filter: ExportFilter | undefined,
+  kind: ExportKind,
+  record: { uid?: string; aid?: string },
+): boolean {
+  if (!filter) return true;
+  switch (kind) {
+    case "user":
+      return !filter.users || filter.users.includes(record.uid as string);
+    case "apikey": {
+      const allow = filter.apikeys ?? filter.users;
+      return !allow || allow.includes(record.uid as string);
+    }
+    case "abode":
+    case "resident":
+    case "note":
+      return !filter.abodes || filter.abodes.includes(record.aid as string);
+  }
+}
+
+function intersectList<T extends string>(a?: T[], b?: T[]): T[] | undefined {
+  if (!a) return b;
+  if (!b) return a;
+  const bs = new Set(b);
+  return a.filter((x) => bs.has(x));
+}
+
+function unionList<T extends string>(a?: T[], b?: T[]): T[] | undefined {
+  if (!a) return b;
+  if (!b) return a;
+  return [...new Set([...a, ...b])];
+}
+
+/**
+ * Combine two filters as a hard intersection: the result can never permit more
+ * than either input. An absent allowlist is treated as "unrestricted", so
+ * intersecting it with a present one yields the present one. `excludeKinds`
+ * are unioned (either exclusion still excludes).
+ */
+export function intersectExportFilters(
+  a: ExportFilter | null | undefined,
+  b: ExportFilter | null | undefined,
+): ExportFilter {
+  if (!a) return b ?? {};
+  if (!b) return a;
+  return {
+    kinds: intersectList(a.kinds, b.kinds),
+    excludeKinds: unionList(a.excludeKinds, b.excludeKinds),
+    abodes: intersectList(a.abodes, b.abodes),
+    users: intersectList(a.users, b.users),
+    apikeys: intersectList(a.apikeys, b.apikeys),
+  };
+}

src/db/export/inspect.ts

@@ -0,0 +1,60 @@
+import readline from "node:readline";
+import type {
+  ExportFilter,
+  ExportKind,
+  ExportMeta,
+} from "../types/ExportImport.js";
+import { isExportKind } from "./filter.js";
+
+export type InspectResult = {
+  counts: Partial<Record<ExportKind, number>>;
+  meta?: Partial<ExportMeta> & { filter?: ExportFilter };
+};
+
+/**
+ * Tally the kinds/counts contained in an NDJSON export stream without ever
+ * touching a database. Works on any stream — a file, {@link ApiInterface}'s
+ * export, or a pipe straight from {@link SqliteInterface}'s export.
+ *
+ * If `stopAfterKinds` is given, reading stops as soon as at least one record of
+ * every requested kind has been seen, rather than draining to EOF — useful for
+ * probing large dumps ("does this contain notes at all?").
+ */
+export async function inspectExportStream(
+  source: NodeJS.ReadableStream,
+  options: { signal?: AbortSignal; stopAfterKinds?: ExportKind[] } = {},
+): Promise<InspectResult> {
+  const { signal, stopAfterKinds } = options;
+  const counts: Partial<Record<ExportKind, number>> = {};
+  let meta: InspectResult["meta"];
+
+  const rl = readline.createInterface({
+    input: source,
+    crlfDelay: Infinity,
+    signal,
+  });
+  try {
+    for await (const raw of rl) {
+      signal?.throwIfAborted();
+      const line = raw.trim();
+      if (!line) continue;
+      let parsed: { kind?: unknown; data?: unknown };
+      try {
+        parsed = JSON.parse(line);
+      } catch {
+        continue;
+      }
+      if (parsed.kind === "meta") {
+        meta = parsed.data as InspectResult["meta"];
+        continue;
+      }
+      if (!isExportKind(parsed.kind)) continue;
+      counts[parsed.kind] = (counts[parsed.kind] ?? 0) + 1;
+      if (stopAfterKinds && stopAfterKinds.every((k) => counts[k])) break;
+    }
+  } finally {
+    rl.close();
+  }
+
+  return { counts, meta };
+}

src/db/postgres/PostgresInterface.ts

@@ -0,0 +1,775 @@
+import type { BackendDbInterface } from "../types/DbInterface.js";
+import {
+  isValidUserPassword,
+  type ClientUser,
+  type CreateUser,
+  type LoginUser,
+  type UpdateUser,
+  type UserFlags,
+} from "../types/User.js";
+import { pgToClientUser, pgToDate } from "./cast.js";
+import {
+  ConflictAbodeError,
+  InvalidAbodeError,
+  NotAuthorizedAbodeError,
+  NotFoundAbodeError,
+  ReadonlyAbodeError,
+} from "../types/errors.js";
+import type { Abode, CreateAbode, UpdateAbode } from "../types/Abode.js";
+import type {
+  CreateResident,
+  Resident,
+  ResidentFlags,
+  updateResident,
+} from "../types/Resident.js";
+import { validatePassword } from "../../util/hash.js";
+import { createApikeyToken, createSessionToken } from "../../util/token.js";
+import type { ClientApikey, CreateApikey } from "../types/Apikey.js";
+import { calcUpdates, catSql, joinSql, sql } from "./sql.js";
+import {
+  selectAbode,
+  selectAbodes,
+  selectClientApikey,
+  selectClientApikeys,
+  selectClientUser,
+  selectClientUsers,
+  selectResident,
+  selectResidents,
+  selectNote,
+  selectNotes,
+  selectPartialNotes,
+} from "./query.js";
+import type {
+  CreateNote,
+  Note,
+  PartialNote,
+  UpdateNote,
+} from "../types/Note.js";
+import type { WrappedPgClient } from "./pool.js";
+import { Readable } from "node:stream";
+import readline from "node:readline";
+import {
+  EXPORT_KIND_ORDER,
+  type Exportable,
+  type ExportKind,
+  type ExportOptions,
+  type Importable,
+  type ImportOptions,
+  type ImportResult,
+} from "../types/ExportImport.js";
+import { isExportKind, kindAllowed, recordAllowed } from "../export/filter.js";
+
+export class PostgresInterface
+  implements BackendDbInterface, Exportable, Importable
+{
+  #db: WrappedPgClient;
+
+  constructor(db: WrappedPgClient) {
+    this.#db = db;
+  }
+
+  #checkReadonly(): void {
+    if (this.#db.readonly) throw new ReadonlyAbodeError();
+  }
+
+  get _() {
+    return {
+      sql,
+      catSql,
+      joinSql,
+      db: this.#db,
+    };
+  }
+
+  get readonly(): boolean {
+    return this.#db.readonly;
+  }
+  get backend(): true {
+    return true;
+  }
+  get name(): "postgres" {
+    return "postgres";
+  }
+
+  async close(): Promise<void> {
+    await this.#db.destroy();
+  }
+
+  async listUsers(): Promise<ClientUser[]> {
+    return selectClientUsers(this.#db);
+  }
+  async #getUserById(uid: string, db: WrappedPgClient): Promise<ClientUser> {
+    const user = await selectClientUser(db, sql`u."uid" = ${{ uuid: uid }}`);
+    if (!user) throw new NotFoundAbodeError();
+    return user;
+  }
+  async getUserById(id: string): Promise<ClientUser> {
+    return this.#getUserById(id, this.#db);
+  }
+  async getUserByEmail(email: string): Promise<ClientUser> {
+    const user = await selectClientUser(
+      this.#db,
+      sql`u."email" = ${{ text: email }}`,
+    );
+    if (!user) throw new NotFoundAbodeError();
+    return user;
+  }
+  async getUserByLogin({ email, password }: LoginUser): Promise<ClientUser> {
+    const rawUser = await this.#db.get<{
+      uid: string;
+      email: string;
+      name: string;
+      flags: unknown;
+      created_at: Date;
+      updated_at: Date;
+      password: string;
+    }>(
+      sql`
+        SELECT "uid", "email", "name", "flags", "created_at", "updated_at", "password"
+        FROM "users"
+        WHERE "email" = ${{ text: email }}
+      `,
+    );
+    if (!rawUser) throw new NotFoundAbodeError();
+    if (rawUser.password.startsWith("#")) throw new ConflictAbodeError();
+    if (!(await validatePassword(password, rawUser.password)))
+      throw new NotAuthorizedAbodeError();
+    return pgToClientUser(rawUser);
+  }
+  async deleteUserById(id: string): Promise<void> {
+    this.#checkReadonly();
+    const { changes } = await this.#db.run(
+      sql`
+        DELETE FROM "users"
+        WHERE "uid" = ${{ uuid: id }}
+      `,
+    );
+    if (!changes) throw new NotFoundAbodeError();
+  }
+  async createUser(user: CreateUser): Promise<ClientUser> {
+    this.#checkReadonly();
+    if (!isValidUserPassword(user.password)) throw new InvalidAbodeError();
+    const uid = crypto.randomUUID();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        await tx.run(
+          sql`
+            INSERT INTO "users"("uid", "email", "name", "password", "flags")
+            VALUES(
+              ${{ uuid: uid }},
+              ${{ text: user.email }},
+              ${{ text: user.name }},
+              ${{ text: user.password }},
+              ${{ jsonb: user.flags }}
+            )
+          `,
+        );
+        return this.#getUserById(uid, tx);
+      }),
+    );
+  }
+  async updateUser(user: UpdateUser): Promise<ClientUser> {
+    this.#checkReadonly();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        const updates = [];
+        if ("email" in user && user.email !== undefined)
+          updates.push(sql`"email" = ${{ text: user.email }}`);
+        if ("name" in user && user.name !== undefined)
+          updates.push(sql`"name" = ${{ text: user.name }}`);
+        if ("password" in user && user.password !== undefined) {
+          if (!isValidUserPassword(user.password))
+            throw new InvalidAbodeError();
+          if (user.password.startsWith("#")) {
+            await tx.run(sql`
+              DELETE FROM "apikeys"
+              WHERE "uid" = ${{ uuid: user.uid }}
+            `);
+          }
+          await tx.run(sql`
+            DELETE FROM "sessions"
+            WHERE "uid" = ${{ uuid: user.uid }}
+          `);
+          updates.push(sql`"password" = ${{ text: user.password }}`);
+        }
+        if ("flags" in user && user.flags !== undefined)
+          updates.push(sql`"flags" = ${{ jsonb: user.flags as UserFlags }}`);
+
+        if (!updates.length) throw new InvalidAbodeError();
+        const { changes } = await tx.run(
+          sql`
+            UPDATE "users"
+            SET
+              "updated_at" = NOW(),
+              ${joinSql(updates, sql`, `)}
+            WHERE "uid" = ${{ uuid: user.uid }}
+          `,
+        );
+        if (!changes) throw new NotFoundAbodeError();
+        return this.#getUserById(user.uid, tx);
+      }),
+    );
+  }
+
+  async listAbodes(): Promise<Abode[]> {
+    return selectAbodes(this.#db);
+  }
+  async #getAbodeById(aid: string, db: WrappedPgClient): Promise<Abode> {
+    const abode = await selectAbode(db, sql`a."aid" = ${{ uuid: aid }}`);
+    if (!abode) throw new NotFoundAbodeError();
+    return abode;
+  }
+  async getAbodeById(id: string): Promise<Abode> {
+    return this.#getAbodeById(id, this.#db);
+  }
+  async deleteAbodeById(id: string): Promise<void> {
+    this.#checkReadonly();
+    const { changes } = await this.#db.run(
+      sql`
+        DELETE FROM "abodes"
+        WHERE "aid" = ${{ uuid: id }}
+      `,
+    );
+    if (!changes) throw new NotFoundAbodeError();
+  }
+  async createAbode(abode: CreateAbode, ctx: { uid: string }): Promise<Abode> {
+    this.#checkReadonly();
+    const aid = crypto.randomUUID();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        await tx.run(
+          sql`
+            INSERT INTO "abodes"("aid", "name", "created_by", "updated_by")
+            VALUES(
+              ${{ uuid: aid }},
+              ${{ text: abode.name }},
+              ${{ uuid: ctx.uid }},
+              ${{ uuid: ctx.uid }}
+            )
+          `,
+        );
+        return this.#getAbodeById(aid, tx);
+      }),
+    );
+  }
+  async updateAbode(abode: UpdateAbode, ctx: { uid: string }): Promise<Abode> {
+    this.#checkReadonly();
+    const updates = calcUpdates({
+      name: (value: string) => sql`"name" = ${{ text: value }}`,
+    })(abode);
+    if (!updates.length) throw new InvalidAbodeError();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        const { changes } = await tx.run(
+          sql`
+            UPDATE "abodes"
+            SET
+              "updated_at" = NOW(),
+              "updated_by" = ${{ uuid: ctx.uid }},
+              ${joinSql(updates, sql`, `)}
+            WHERE "aid" = ${{ uuid: abode.aid }}
+          `,
+        );
+        if (!changes) throw new NotFoundAbodeError();
+        return this.#getAbodeById(abode.aid, tx);
+      }),
+    );
+  }
+
+  async listResidents(): Promise<Resident[]> {
+    return selectResidents(this.#db);
+  }
+  async listResidentsByUserId(uid: string): Promise<Resident[]> {
+    return selectResidents(this.#db, sql`"uid" = ${{ uuid: uid }}`);
+  }
+  async listResidentsByAbodeId(aid: string): Promise<Resident[]> {
+    return selectResidents(this.#db, sql`"aid" = ${{ uuid: aid }}`);
+  }
+  async #getResidentById(
+    uid: string,
+    aid: string,
+    db: WrappedPgClient,
+  ): Promise<Resident> {
+    const resident = await selectResident(
+      db,
+      sql`"uid" = ${{ uuid: uid }} AND "aid" = ${{ uuid: aid }}`,
+    );
+    if (!resident) throw new NotFoundAbodeError();
+    return resident;
+  }
+  async getResidentById(uid: string, aid: string): Promise<Resident> {
+    return this.#getResidentById(uid, aid, this.#db);
+  }
+  async deleteResidentById(uid: string, aid: string): Promise<void> {
+    this.#checkReadonly();
+    const { changes } = await this.#db.run(
+      sql`
+        DELETE FROM "residents"
+        WHERE "uid" = ${{ uuid: uid }} AND "aid" = ${{ uuid: aid }}
+      `,
+    );
+    if (!changes) throw new NotFoundAbodeError();
+  }
+  async createResident(
+    resident: CreateResident,
+    ctx: { uid: string },
+  ): Promise<Resident> {
+    this.#checkReadonly();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        await tx.run(
+          sql`
+            INSERT INTO "residents"("uid", "aid", "flags", "created_by", "updated_by")
+            VALUES(
+              ${{ uuid: resident.uid }},
+              ${{ uuid: resident.aid }},
+              ${{ jsonb: resident.flags }},
+              ${{ uuid: ctx.uid }},
+              ${{ uuid: ctx.uid }}
+            )
+          `,
+        );
+        return this.#getResidentById(resident.uid, resident.aid, tx);
+      }),
+    );
+  }
+  async updateResident(
+    resident: updateResident,
+    ctx: { uid: string },
+  ): Promise<Resident> {
+    this.#checkReadonly();
+    const updates = calcUpdates({
+      flags: (value: ResidentFlags) => sql`"flags" = ${{ jsonb: value }}`,
+    })(resident);
+    if (!updates.length) throw new InvalidAbodeError();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        const { changes } = await tx.run(
+          sql`
+            UPDATE "residents"
+            SET
+              "updated_at" = NOW(),
+              "updated_by" = ${{ uuid: ctx.uid }},
+              ${joinSql(updates, sql`, `)}
+            WHERE
+              "uid" = ${{ uuid: resident.uid }}
+              AND "aid" = ${{ uuid: resident.aid }}
+          `,
+        );
+        if (!changes) throw new NotFoundAbodeError();
+        return this.#getResidentById(resident.uid, resident.aid, tx);
+      }),
+    );
+  }
+
+  async listUsersByAbodeId(id: string): Promise<ClientUser[]> {
+    return selectClientUsers(
+      this.#db,
+      sql`
+        JOIN "residents" r ON u."uid" = r."uid"
+        WHERE r."aid" = ${{ uuid: id }}
+      `,
+    );
+  }
+  async listAbodesByUserId(id: string): Promise<Abode[]> {
+    return selectAbodes(
+      this.#db,
+      sql`
+        JOIN "residents" r ON a."aid" = r."aid"
+        WHERE r."uid" = ${{ uuid: id }}
+      `,
+    );
+  }
+
+  async getUserBySession(token: `as_${string}`): Promise<ClientUser> {
+    const session = await this.#db.get<{
+      uid: string;
+      expires_at: Date;
+    }>(sql`
+      SELECT "uid", "expires_at"
+      FROM "sessions"
+      WHERE "token" = ${{ text: token }}
+    `);
+    if (!session) throw new NotFoundAbodeError();
+    if (new Date(pgToDate(session.expires_at)).getTime() < Date.now()) {
+      if (!this.readonly) {
+        await this.#db.run(sql`
+          DELETE FROM "sessions"
+          WHERE "expires_at" < NOW()
+        `);
+      }
+      throw new NotFoundAbodeError();
+    }
+    if (!this.readonly) {
+      await this.#db.run(sql`
+        UPDATE "sessions"
+        SET "expires_at" = NOW() + INTERVAL '7 days'
+        WHERE "token" = ${{ text: token }}
+      `);
+    }
+    return this.#getUserById(session.uid, this.#db);
+  }
+  async createSession(uid: string): Promise<`as_${string}`> {
+    this.#checkReadonly();
+    const token = createSessionToken();
+    await this.#db.run(sql`
+      INSERT INTO "sessions"("uid", "token")
+      VALUES(${{ uuid: uid }}, ${{ text: token }})
+    `);
+    return token;
+  }
+  async deleteSessionsByUser(uid: string): Promise<void> {
+    this.#checkReadonly();
+    await this.#db.run(sql`
+      DELETE FROM "sessions"
+      WHERE "uid" = ${{ uuid: uid }}
+    `);
+  }
+
+  async deleteSession(token: `as_${string}`): Promise<void> {
+    this.#checkReadonly();
+    await this.#db.run(sql`
+      DELETE FROM "sessions"
+      WHERE "token" = ${{ text: token }}
+    `);
+  }
+
+  async #getApikeyByToken(
+    token: `at_${string}`,
+    db: WrappedPgClient,
+  ): Promise<ClientApikey> {
+    const apikey = await selectClientApikey(
+      db,
+      sql`k."token" = ${{ text: token }}`,
+    );
+    if (!apikey) throw new NotFoundAbodeError();
+    return apikey;
+  }
+  async getUserByApikey(
+    token: `at_${string}`,
+  ): Promise<[ClientUser, ClientApikey]> {
+    const apikey = await this.#getApikeyByToken(token, this.#db);
+    if (
+      apikey.expires_at &&
+      new Date(apikey.expires_at).getTime() < Date.now()
+    ) {
+      throw new NotAuthorizedAbodeError();
+    }
+    return [await this.#getUserById(apikey.uid, this.#db), apikey];
+  }
+  async listApikeysByUser(uid: string): Promise<ClientApikey[]> {
+    return selectClientApikeys(this.#db, sql`k."uid" = ${{ uuid: uid }}`);
+  }
+  async getApikeyById(kid: string): Promise<ClientApikey> {
+    const apikey = await selectClientApikey(
+      this.#db,
+      sql`k."kid" = ${{ uuid: kid }}`,
+    );
+    if (!apikey) throw new NotFoundAbodeError();
+    return apikey;
+  }
+  async createApikey(
+    apikey: CreateApikey,
+  ): Promise<[ClientApikey, `at_${string}`]> {
+    this.#checkReadonly();
+    const token = createApikeyToken();
+    const kid = crypto.randomUUID();
+    let expires = apikey.expires_at;
+    if (expires === undefined)
+      expires = new Date(
+        new Date().getTime() + 1000 * 60 * 60 * 24 * 365,
+      ).toISOString();
+    if (expires && new Date(expires).getTime() < Date.now())
+      throw new InvalidAbodeError();
+
+    await this.#db.run(sql`
+      INSERT INTO "apikeys"("uid", "kid", "token", "name", "permissions", "expires_at")
+      VALUES(
+        ${{ uuid: apikey.uid }},
+        ${{ uuid: kid }},
+        ${{ text: token }},
+        ${{ text: apikey.name }},
+        ${{ jsonb: apikey.permissions }},
+        ${expires ? { date: expires } : { null: true }}
+      )
+    `);
+    return [await this.#getApikeyByToken(token, this.#db), token];
+  }
+  async deleteApikeyById(kid: string): Promise<void> {
+    this.#checkReadonly();
+    const { changes } = await this.#db.run(sql`
+      DELETE FROM "apikeys"
+      WHERE "kid" = ${{ uuid: kid }}
+    `);
+    if (!changes) throw new NotFoundAbodeError();
+  }
+
+  async listNotes(): Promise<PartialNote[]> {
+    return selectPartialNotes(this.#db);
+  }
+  async #getNoteById(nid: string, db: WrappedPgClient): Promise<Note> {
+    const note = await selectNote(db, sql`n."nid" = ${{ uuid: nid }}`);
+    if (!note) throw new NotFoundAbodeError();
+    return note;
+  }
+  async getNoteById(nid: string): Promise<Note> {
+    return this.#getNoteById(nid, this.#db);
+  }
+  async deleteNoteById(nid: string): Promise<void> {
+    this.#checkReadonly();
+    const { changes } = await this.#db.run(sql`
+      DELETE FROM "notes" WHERE "nid" = ${{ uuid: nid }}
+    `);
+    if (!changes) throw new NotFoundAbodeError();
+  }
+  async createNote(note: CreateNote, ctx: { uid: string }): Promise<Note> {
+    this.#checkReadonly();
+    const nid = crypto.randomUUID();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        await tx.run(sql`
+          INSERT INTO "notes"("nid", "aid", "name", "content", "properties", "created_by", "updated_by")
+          VALUES(
+            ${{ uuid: nid }}, ${{ uuid: note.aid }}, ${{ text: note.name }},
+            ${{ text: note.content ?? "" }}, ${{ jsonb: note.properties }},
+            ${{ uuid: ctx.uid }}, ${{ uuid: ctx.uid }}
+          )
+        `);
+        return this.#getNoteById(nid, tx);
+      }),
+    );
+  }
+  async updateNote(note: UpdateNote, ctx: { uid: string }): Promise<Note> {
+    this.#checkReadonly();
+    const updates = calcUpdates({
+      name: (value: string) => sql`"name" = ${{ text: value }}`,
+      content: (value: string) => sql`"content" = ${{ text: value }}`,
+      properties: (value: object) => sql`"properties" = ${{ jsonb: value }}`,
+    })(note);
+    if (!updates.length) throw new InvalidAbodeError();
+    return this.#db.rethrow(() =>
+      this.#db.multi(async (tx) => {
+        const { changes } = await tx.run(sql`
+          UPDATE "notes"
+          SET "updated_at" = NOW(), "updated_by" = ${{ uuid: ctx.uid }},
+              ${joinSql(updates, sql`, `)}
+          WHERE "nid" = ${{ uuid: note.nid }}
+        `);
+        if (!changes) throw new NotFoundAbodeError();
+        return this.#getNoteById(note.nid, tx);
+      }),
+    );
+  }
+  async listNotesByAbodeId(aid: string): Promise<PartialNote[]> {
+    return selectPartialNotes(this.#db, sql`n."aid" = ${{ uuid: aid }}`);
+  }
+  async listNotesByUserId(uid: string): Promise<PartialNote[]> {
+    return selectPartialNotes(this.#db, sql`n."created_by" = ${{ uuid: uid }}`);
+  }
+
+  export(options: ExportOptions = {}): NodeJS.ReadableStream {
+    const { filter, signal } = options;
+    const db = this.#db;
+    const source = this.name;
+
+    // Emission follows the FK-safe EXPORT_KIND_ORDER (part of the wire
+    // contract; each `load()` is a single query, run lazily and skipped once
+    // the destination aborts.
+    const loaders: Partial<
+      Record<ExportKind, () => Promise<{ uid?: string; aid?: string }[]>>
+    > = {
+      user: () => selectClientUsers(db),
+      abode: () => selectAbodes(db),
+      resident: () => selectResidents(db),
+      apikey: () => selectClientApikeys(db),
+      note: () => selectNotes(db),
+    };
+
+    async function* generate(): AsyncGenerator<string> {
+      if (signal?.aborted) return;
+      yield JSON.stringify({
+        kind: "meta",
+        data: {
+          v: 1,
+          exportedAt: new Date().toISOString(),
+          source,
+          filter: filter ?? {},
+        },
+      }) + "\n";
+      try {
+        for (const kind of EXPORT_KIND_ORDER) {
+          if (signal?.aborted) return;
+          const load = loaders[kind];
+          if (!load) continue;
+          if (!kindAllowed(filter, kind)) continue;
+          for (const row of await load()) {
+            if (signal?.aborted) return;
+            if (recordAllowed(filter, kind, row)) {
+              yield JSON.stringify({ kind, data: row }) + "\n";
+            }
+          }
+        }
+      } catch (e) {
+        if (signal?.aborted) return;
+        yield JSON.stringify({
+          kind: "error",
+          data: {
+            message: e instanceof Error ? e.message : String(e),
+            code: e instanceof Error ? e.name : undefined,
+          },
+        }) + "\n";
+      }
+    }
+
+    return Readable.from(generate());
+  }
+
+  async import(
+    source: NodeJS.ReadableStream,
+    options: ImportOptions = {},
+  ): Promise<ImportResult> {
+    this.#checkReadonly();
+    const { filter, signal } = options;
+    const counts: Partial<Record<ExportKind, number>> = {};
+
+    const rl = readline.createInterface({
+      input: source,
+      crlfDelay: Infinity,
+      signal,
+    });
+
+    // Postgres holds FK enforcement (unlike sqlite, which we toggle off): the
+    // FK-safe insertion order keeps a full dump valid.
+    // The transaction commits only if the whole stream is consumed cleanly; an
+    // error/abort rolls it back via `multi`.
+    try {
+      await this.#db.rethrow(() =>
+        this.#db.multi(async (tx) => {
+          for await (const raw of rl) {
+            signal?.throwIfAborted();
+            const line = raw.trim();
+            if (!line) continue;
+            let parsed: { kind?: unknown; data?: unknown };
+            try {
+              parsed = JSON.parse(line);
+            } catch {
+              throw new InvalidAbodeError();
+            }
+            if (parsed.kind === "meta") continue;
+            if (parsed.kind === "error") {
+              throw new Error(
+                `export stream reported an error: ${
+                  (parsed.data as { message?: string })?.message ?? "unknown"
+                }`,
+              );
+            }
+            if (!isExportKind(parsed.kind)) continue;
+            if (!kindAllowed(filter, parsed.kind)) continue;
+            const data = parsed.data as { uid?: string; aid?: string };
+            if (!recordAllowed(filter, parsed.kind, data)) continue;
+            await this.#importRecord(tx, parsed.kind, parsed.data);
+            counts[parsed.kind] = (counts[parsed.kind] ?? 0) + 1;
+          }
+          // An abort while blocked on the source closes readline without
+          // throwing, so re-check before the transaction commits.
+          signal?.throwIfAborted();
+        }),
+      );
+    } finally {
+      rl.close();
+    }
+
+    return { counts };
+  }
+
+  async #importRecord(
+    tx: WrappedPgClient,
+    kind: ExportKind,
+    data: unknown,
+  ): Promise<void> {
+    switch (kind) {
+      case "user": {
+        const u = data as ClientUser;
+        // `password` is never exported; imported users land on the schema
+        // default ('#unset') and must reset before they can log in.
+        await tx.run(sql`
+          INSERT INTO "users"("uid", "email", "name", "flags", "created_at", "updated_at")
+          VALUES(
+            ${{ uuid: u.uid }},
+            ${{ text: u.email }},
+            ${{ text: u.name }},
+            ${{ jsonb: u.flags }},
+            ${{ date: u.created_at }},
+            ${{ date: u.updated_at }}
+          )
+        `);
+        break;
+      }
+      case "abode": {
+        const a = data as Abode;
+        await tx.run(sql`
+          INSERT INTO "abodes"("aid", "name", "created_at", "created_by", "updated_at", "updated_by")
+          VALUES(
+            ${{ uuid: a.aid }},
+            ${{ text: a.name }},
+            ${{ date: a.created_at }},
+            ${a.created_by ? { uuid: a.created_by } : { null: true }},
+            ${{ date: a.updated_at }},
+            ${a.updated_by ? { uuid: a.updated_by } : { null: true }}
+          )
+        `);
+        break;
+      }
+      case "resident": {
+        const r = data as Resident;
+        await tx.run(sql`
+          INSERT INTO "residents"("uid", "aid", "flags", "created_at", "created_by", "updated_at", "updated_by")
+          VALUES(
+            ${{ uuid: r.uid }},
+            ${{ uuid: r.aid }},
+            ${{ jsonb: r.flags }},
+            ${{ date: r.created_at }},
+            ${r.created_by ? { uuid: r.created_by } : { null: true }},
+            ${{ date: r.updated_at }},
+            ${r.updated_by ? { uuid: r.updated_by } : { null: true }}
+          )
+        `);
+        break;
+      }
+      case "apikey": {
+        const k = data as ClientApikey;
+        // `token` is never exported; mint a fresh unique one so the record's
+        // metadata (kid/permissions/expiry) survives even though the original
+        // secret cannot.
+        await tx.run(sql`
+          INSERT INTO "apikeys"("uid", "kid", "token", "name", "permissions", "created_at", "expires_at")
+          VALUES(
+            ${{ uuid: k.uid }},
+            ${{ uuid: k.kid }},
+            ${{ text: createApikeyToken() }},
+            ${{ text: k.name }},
+            ${{ jsonb: k.permissions }},
+            ${{ date: k.created_at }},
+            ${k.expires_at ? { date: k.expires_at } : { null: true }}
+          )
+        `);
+        break;
+      }
+      case "note": {
+        const n = data as Note;
+        await tx.run(sql`
+          INSERT INTO "notes"("nid", "aid", "name", "content", "properties", "created_at", "created_by", "updated_at", "updated_by")
+          VALUES(
+            ${{ uuid: n.nid }}, ${{ uuid: n.aid }}, ${{ text: n.name }},
+            ${{ text: n.content ?? "" }}, ${{ jsonb: n.properties }},
+            ${{ date: n.created_at }},
+            ${n.created_by ? { uuid: n.created_by } : { null: true }},
+            ${{ date: n.updated_at }},
+            ${n.updated_by ? { uuid: n.updated_by } : { null: true }}
+          )
+        `);
+        break;
+      }
+    }
+  }
+}

src/db/postgres/PostgresMigrator.ts

@@ -0,0 +1,126 @@
+import type {
+  AppliedMigration,
+  AvailableMigration,
+  Migrator,
+} from "../types/Migrator.js";
+import { init, migrations } from "./migrations/index.js";
+import { pgToDate } from "./cast.js";
+import { rollbackQuietly, WrappedPgTx, WrappedPool } from "./pool.js";
+import { sql, toPositional } from "./sql.js";
+
+export class PostgresMigrator implements Migrator {
+  #pool: WrappedPool;
+
+  constructor(pool: WrappedPool) {
+    this.#pool = pool;
+  }
+
+  async #listAppliedMigrations(): Promise<
+    { id: number; name: string; applied_at: string }[] | null
+  > {
+    const client = await this.#pool._pool.connect();
+    try {
+      const existsResult = await client.query<{ exists: boolean }>(
+        `SELECT EXISTS (
+          SELECT 1 FROM information_schema.tables
+          WHERE table_schema = 'public' AND table_name = '_migrations'
+        ) AS "exists"`,
+      );
+      if (!existsResult.rows[0]?.exists) return null;
+
+      const result = await client.query<{
+        id: number;
+        name: string;
+        applied_at: Date;
+      }>(
+        `SELECT "id", "name", "applied_at" FROM "_migrations" ORDER BY "id" ASC`,
+      );
+      return result.rows.map((x) => ({
+        ...x,
+        applied_at: pgToDate(x.applied_at),
+      }));
+    } finally {
+      client.release();
+    }
+  }
+
+  async listAppliedMigrations(): Promise<AppliedMigration[]> {
+    return (await this.#listAppliedMigrations()) ?? [];
+  }
+
+  listAvailableMigrations(): AvailableMigration[] {
+    return migrations.map((m) => ({ id: m.id, name: m.name }));
+  }
+
+  async migrateTo(id: number): Promise<void> {
+    const target = migrations.find((x) => x.id === id);
+    if (!target) throw new Error(`No known migration with id ${id}`);
+
+    let current = await this.#listAppliedMigrations();
+    if (!current) {
+      const client = await this.#pool._pool.connect();
+      try {
+        await client.query(init);
+      } finally {
+        client.release();
+      }
+      current = [];
+    }
+
+    for (const { id, name } of current) {
+      const migration = migrations.find((x) => x.id === id);
+      if (!migration)
+        throw new Error(`Applied migration ${id} (${name}) not known`);
+      if (migration.name !== name)
+        throw new Error(
+          `Applied migration ${id} (${name}) has a different name from expected (${migration.name})`,
+        );
+    }
+
+    const start = migrations.findIndex((x) => x.id === current.at(-1)?.id) + 1;
+    const end = migrations.indexOf(target) + 1;
+
+    if (end < start) {
+      throw new Error(
+        `Cannot migrate backward, at ${current.at(-1)?.id ?? 0}, going to ${target.id}`,
+      );
+    }
+
+    const toApply = migrations.slice(start, end);
+
+    if (!toApply.length) {
+      console.log("Nothing to do");
+      return;
+    }
+
+    for (const migration of toApply) {
+      console.log(`Applying migration ${migration.id} (${migration.name})`);
+      const client = await this.#pool._pool.connect();
+      const tx = new WrappedPgTx(client, false);
+      try {
+        await client.query("BEGIN");
+        for (const part of migration.parts) {
+          console.log(`- Applying part ${part.id} (${part.name})`);
+          if ("sql" in part) {
+            await client.query(part.sql);
+          } else {
+            await part.apply(tx);
+          }
+        }
+        const recordSql = sql`
+          INSERT INTO "_migrations"("id", "name")
+          VALUES (${{ int: migration.id }}, ${{ text: migration.name }})
+        `;
+        await client.query(toPositional(recordSql._sql), recordSql._vars);
+        await client.query("COMMIT");
+      } catch (e) {
+        await rollbackQuietly(client);
+        throw e;
+      } finally {
+        client.release();
+      }
+    }
+
+    console.log("Done migrating database");
+  }
+}

src/db/postgres/cast.ts

@@ -0,0 +1,208 @@
+import type { Abode } from "../types/Abode.js";
+import type { ApikeyPermissions, ClientApikey } from "../types/Apikey.js";
+import type { Resident, ResidentFlags } from "../types/Resident.js";
+import type {
+  Note,
+  NoteProperties,
+  PartialNote,
+  PartialNoteProperties,
+} from "../types/Note.js";
+import type { ClientUser, PartialUser, UserFlags } from "../types/User.js";
+
+export function pgToDate(d: Date | string): string {
+  return d instanceof Date ? d.toISOString() : new Date(d).toISOString();
+}
+
+const defaultUserFlags: UserFlags = {};
+export function pgToUserFlags(flags: unknown): UserFlags {
+  const out = { ...defaultUserFlags };
+  if (typeof flags !== "object" || !flags || Array.isArray(flags)) return out;
+  const f = flags as Record<string, unknown>;
+  if (f.admin === true) out.admin = true;
+  return out;
+}
+
+export function pgToPartialUser(user: {
+  uid: string;
+  name: string;
+  flags: unknown;
+  created_at: Date | string;
+  updated_at: Date | string;
+}): PartialUser {
+  return {
+    uid: user.uid,
+    name: user.name,
+    flags: pgToUserFlags(user.flags),
+    created_at: pgToDate(user.created_at),
+    updated_at: pgToDate(user.updated_at),
+  };
+}
+export function pgToClientUser(user: {
+  uid: string;
+  email: string;
+  name: string;
+  flags: unknown;
+  created_at: Date | string;
+  updated_at: Date | string;
+}): ClientUser {
+  return {
+    ...pgToPartialUser(user),
+    email: user.email,
+  };
+}
+
+export function pgToAbode(abode: {
+  aid: string;
+  name: string;
+  created_at: Date | string;
+  created_by: string | null;
+  updated_at: Date | string;
+  updated_by: string | null;
+}): Abode {
+  return {
+    aid: abode.aid,
+    name: abode.name,
+    created_at: pgToDate(abode.created_at),
+    created_by: abode.created_by,
+    updated_at: pgToDate(abode.updated_at),
+    updated_by: abode.updated_by,
+  };
+}
+
+const defaultResidentFlags: ResidentFlags = {};
+export function pgToResidentFlags(flags: unknown): ResidentFlags {
+  const out = { ...defaultResidentFlags };
+  if (typeof flags !== "object" || !flags || Array.isArray(flags)) return out;
+  const f = flags as Record<string, unknown>;
+  if (f.admin === true) out.admin = true;
+  return out;
+}
+
+export function pgToResident(resident: {
+  uid: string;
+  aid: string;
+  flags: unknown;
+  created_at: Date | string;
+  created_by: string | null;
+  updated_at: Date | string;
+  updated_by: string | null;
+}): Resident {
+  return {
+    uid: resident.uid,
+    aid: resident.aid,
+    flags: pgToResidentFlags(resident.flags),
+    created_at: pgToDate(resident.created_at),
+    created_by: resident.created_by,
+    updated_at: pgToDate(resident.updated_at),
+    updated_by: resident.updated_by,
+  };
+}
+
+const defaultApikeyPermissions: ApikeyPermissions = {};
+export function pgToApikeyPermissions(permissions: unknown): ApikeyPermissions {
+  const out = { ...defaultApikeyPermissions };
+  if (
+    typeof permissions !== "object" ||
+    !permissions ||
+    Array.isArray(permissions)
+  )
+    return out;
+  const p = permissions as Record<string, unknown>;
+  if (p.admin === true) out.admin = true;
+  if (p.all === true) out.all = true;
+  for (const key of ["users", "residents", "abodes"] as const) {
+    if (p[key] === "r" || p[key] === "rw") out[key] = p[key] as "r" | "rw";
+  }
+  for (const key of ["restrict_users", "restrict_abodes"] as const) {
+    if (
+      Array.isArray(p[key]) &&
+      (p[key] as unknown[]).every((x) => typeof x === "string")
+    ) {
+      out[key] = p[key] as string[];
+    }
+  }
+  return out;
+}
+
+export function pgToClientApikey(apikey: {
+  uid: string;
+  kid: string;
+  name: string;
+  permissions: unknown;
+  created_at: Date | string;
+  expires_at: Date | string | null;
+}): ClientApikey {
+  return {
+    uid: apikey.uid,
+    kid: apikey.kid,
+    name: apikey.name,
+    permissions: pgToApikeyPermissions(apikey.permissions),
+    created_at: pgToDate(apikey.created_at),
+    expires_at: apikey.expires_at ? pgToDate(apikey.expires_at) : null,
+  };
+}
+
+const validNoteTypes = new Set(["note"]);
+
+function pgToNoteProperties(properties: unknown): NoteProperties {
+  if (
+    typeof properties !== "object" ||
+    !properties ||
+    Array.isArray(properties)
+  )
+    return {};
+  const value = properties as Record<string, unknown>;
+  return validNoteTypes.has(value.type as string)
+    ? { type: value.type as "note" }
+    : {};
+}
+
+function pgToPartialNoteProperties(properties: unknown): PartialNoteProperties {
+  return { type: pgToNoteProperties(properties).type ?? "note" };
+}
+
+export function pgToNote(note: {
+  nid: string;
+  aid: string;
+  name: string;
+  content: string;
+  properties: unknown;
+  created_at: Date | string;
+  created_by: string | null;
+  updated_at: Date | string;
+  updated_by: string | null;
+}): Note {
+  return {
+    nid: note.nid,
+    aid: note.aid,
+    name: note.name,
+    content: note.content,
+    properties: pgToNoteProperties(note.properties),
+    created_at: pgToDate(note.created_at),
+    created_by: note.created_by,
+    updated_at: pgToDate(note.updated_at),
+    updated_by: note.updated_by,
+  };
+}
+
+export function pgToPartialNote(note: {
+  nid: string;
+  aid: string;
+  name: string;
+  properties: unknown;
+  created_at: Date | string;
+  created_by: string | null;
+  updated_at: Date | string;
+  updated_by: string | null;
+}): PartialNote {
+  return {
+    nid: note.nid,
+    aid: note.aid,
+    name: note.name,
+    properties: pgToPartialNoteProperties(note.properties),
+    created_at: pgToDate(note.created_at),
+    created_by: note.created_by,
+    updated_at: pgToDate(note.updated_at),
+    updated_by: note.updated_by,
+  };
+}

src/db/postgres/getdb.static.ts

@@ -0,0 +1,20 @@
+import type { GetDbStatic } from "../types/GetDb.js";
+import { WrappedPool } from "./pool.js";
+import { PostgresInterface } from "./PostgresInterface.js";
+import { PostgresMigrator } from "./PostgresMigrator.js";
+import { isPgUrl, parsePgUrl, pgProtocols } from "./url.js";
+
+const getPgStatic: GetDbStatic = {
+  name: "postgres",
+  protocols: pgProtocols,
+  checkUrl: isPgUrl,
+  getDbInterface: async (url) => {
+    const { connectionString, readonly } = parsePgUrl(url);
+    return new PostgresInterface(new WrappedPool(connectionString, readonly));
+  },
+  getMigrator: async (url) => {
+    const { connectionString } = parsePgUrl(url);
+    return new PostgresMigrator(new WrappedPool(connectionString));
+  },
+};
+export default getPgStatic;

src/db/postgres/migrations/1.init/1.users.pg.sql

@@ -0,0 +1,9 @@
+CREATE TABLE "users" (
+    "uid" UUID NOT NULL PRIMARY KEY,
+    "email" TEXT NOT NULL UNIQUE,
+    "name" TEXT NOT NULL,
+    "password" TEXT NOT NULL DEFAULT '#unset',
+    "flags" JSONB NOT NULL DEFAULT '{}',
+    "created_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updated_at" TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);

src/db/postgres/migrations/1.init/2.abodes.pg.sql

@@ -0,0 +1,8 @@
+CREATE TABLE "abodes" (
+    "aid" UUID NOT NULL PRIMARY KEY,
+    "name" TEXT NOT NULL,
+    "created_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "created_by" UUID REFERENCES "users"("uid") ON DELETE SET NULL,
+    "updated_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updated_by" UUID REFERENCES "users"("uid") ON DELETE SET NULL
+);

src/db/postgres/migrations/1.init/3.residents.pg.sql

@@ -0,0 +1,11 @@
+CREATE TABLE "residents" (
+    "uid" UUID NOT NULL REFERENCES "users"("uid") ON DELETE CASCADE,
+    "aid" UUID NOT NULL REFERENCES "abodes"("aid") ON DELETE CASCADE,
+    "flags" JSONB NOT NULL DEFAULT '{}',
+    "created_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "created_by" UUID REFERENCES "users"("uid") ON DELETE SET NULL,
+    "updated_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updated_by" UUID REFERENCES "users"("uid") ON DELETE SET NULL,
+
+    PRIMARY KEY("uid", "aid")
+);

src/db/postgres/migrations/1.init/index.ts

@@ -0,0 +1,14 @@
+import type { PgMigration } from "../types.js";
+import p1 from "./1.users.pg.sql";
+import p2 from "./2.abodes.pg.sql";
+import p3 from "./3.residents.pg.sql";
+
+export const m1: PgMigration = {
+  id: 1,
+  name: "init",
+  parts: [
+    { id: 1, name: "users", sql: p1 },
+    { id: 2, name: "abodes", sql: p2 },
+    { id: 3, name: "residents", sql: p3 },
+  ],
+};

src/db/postgres/migrations/2.auth/1.sessions.pg.sql

@@ -0,0 +1,7 @@
+CREATE TABLE "sessions" (
+    "uid" UUID NOT NULL REFERENCES "users"("uid") ON DELETE CASCADE,
+    "token" TEXT NOT NULL PRIMARY KEY,
+    "created_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updated_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "expires_at" TIMESTAMPTZ NOT NULL DEFAULT NOW() + INTERVAL '7 days'
+);

src/db/postgres/migrations/2.auth/2.apikeys.pg.sql

@@ -0,0 +1,9 @@
+CREATE TABLE "apikeys" (
+    "uid" UUID NOT NULL REFERENCES "users"("uid") ON DELETE CASCADE,
+    "kid" UUID NOT NULL PRIMARY KEY,
+    "token" TEXT NOT NULL UNIQUE,
+    "name" TEXT NOT NULL,
+    "permissions" JSONB NOT NULL DEFAULT '{}',
+    "created_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "expires_at" TIMESTAMPTZ
+);

src/db/postgres/migrations/2.auth/index.ts

@@ -0,0 +1,12 @@
+import type { PgMigration } from "../types.js";
+import p1 from "./1.sessions.pg.sql";
+import p2 from "./2.apikeys.pg.sql";
+
+export const m2: PgMigration = {
+  id: 2,
+  name: "auth",
+  parts: [
+    { id: 1, name: "sessions", sql: p1 },
+    { id: 2, name: "apikeys", sql: p2 },
+  ],
+};

src/db/postgres/migrations/3.notes/1.notes.pg.sql

@@ -0,0 +1,11 @@
+CREATE TABLE "notes" (
+    "nid" UUID NOT NULL PRIMARY KEY,
+    "aid" UUID NOT NULL REFERENCES "abodes"("aid") ON DELETE CASCADE,
+    "name" TEXT NOT NULL,
+    "content" TEXT NOT NULL DEFAULT '',
+    "properties" JSONB NOT NULL DEFAULT '{}',
+    "created_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "created_by" UUID REFERENCES "users"("uid") ON DELETE SET NULL,
+    "updated_at" TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    "updated_by" UUID REFERENCES "users"("uid") ON DELETE SET NULL
+);

src/db/postgres/migrations/3.notes/index.ts

@@ -0,0 +1,8 @@
+import type { PgMigration } from "../types.js";
+import p1 from "./1.notes.pg.sql";
+
+export const m3: PgMigration = {
+  id: 3,
+  name: "notes",
+  parts: [{ id: 1, name: "notes", sql: p1 }],
+};

src/db/postgres/migrations/index.ts

@@ -0,0 +1,7 @@
+import { m1 } from "./1.init/index.js";
+import { m2 } from "./2.auth/index.js";
+import { m3 } from "./3.notes/index.js";
+import type { PgMigration } from "./types.js";
+
+export { default as init } from "./init.pg.sql";
+export const migrations: PgMigration[] = [m1, m2, m3];

src/db/postgres/migrations/init.pg.sql

@@ -0,0 +1,5 @@
+CREATE TABLE "_migrations" (
+    "id" INTEGER NOT NULL PRIMARY KEY,
+    "name" TEXT NOT NULL,
+    "applied_at" TIMESTAMPTZ NOT NULL DEFAULT NOW()
+);

src/db/postgres/migrations/types.ts

@@ -0,0 +1,19 @@
+import type { WrappedPgClient } from "../pool.js";
+
+export type PgMigrationPart = {
+  id: number;
+  name: string;
+} & (
+  | {
+      sql: string;
+    }
+  | {
+      apply: (client: WrappedPgClient) => Promise<void>;
+    }
+);
+
+export type PgMigration = {
+  id: number;
+  name: string;
+  parts: PgMigrationPart[];
+};

src/db/postgres/pool.ts

@@ -0,0 +1,128 @@
+import pg from "pg";
+import { ConflictAbodeError, NotFoundAbodeError } from "../types/errors.js";
+import type { SqlCode } from "./sql.js";
+import { toPositional } from "./sql.js";
+
+export interface WrappedPgClient {
+  readonly: boolean;
+  destroy(): Promise<void>;
+  all<R>(stmt: SqlCode): Promise<R[]>;
+  get<R>(stmt: SqlCode): Promise<R | null>;
+  run(stmt: SqlCode): Promise<{ changes: number }>;
+  multi<R>(fn: (tx: WrappedPgClient) => Promise<R>): Promise<R>;
+  rethrow<R>(fn: () => Promise<R>): Promise<R>;
+}
+
+async function rethrow<R>(fn: () => Promise<R>): Promise<R> {
+  try {
+    return await fn();
+  } catch (e) {
+    if (e instanceof Error && "code" in e) {
+      switch ((e as NodeJS.ErrnoException).code) {
+        case "23505":
+          throw new ConflictAbodeError();
+        case "23503":
+          throw new NotFoundAbodeError();
+      }
+    }
+    throw e;
+  }
+}
+
+// Rollback on a broken connection can itself throw; the original error is
+// the one worth surfacing.
+export async function rollbackQuietly(client: pg.PoolClient): Promise<void> {
+  try {
+    await client.query("ROLLBACK");
+  } catch {}
+}
+
+abstract class WrappedPgBase implements WrappedPgClient {
+  #queryable: pg.Pool | pg.PoolClient;
+  #readonly: boolean;
+
+  constructor(queryable: pg.Pool | pg.PoolClient, readonly_: boolean) {
+    this.#queryable = queryable;
+    this.#readonly = readonly_;
+  }
+
+  get readonly(): boolean {
+    return this.#readonly;
+  }
+
+  abstract destroy(): Promise<void>;
+  abstract multi<R>(fn: (tx: WrappedPgClient) => Promise<R>): Promise<R>;
+
+  async all<R>(stmt: SqlCode): Promise<R[]> {
+    const result = await this.#queryable.query(
+      toPositional(stmt._sql),
+      stmt._vars,
+    );
+    return result.rows as R[];
+  }
+
+  async get<R>(stmt: SqlCode): Promise<R | null> {
+    const rows = await this.all<R>(stmt);
+    if (rows.length > 1) throw new Error("Multiple results");
+    return rows[0] ?? null;
+  }
+
+  async run(stmt: SqlCode): Promise<{ changes: number }> {
+    const result = await this.#queryable.query(
+      toPositional(stmt._sql),
+      stmt._vars,
+    );
+    return { changes: result.rowCount ?? 0 };
+  }
+
+  rethrow = rethrow;
+}
+
+export class WrappedPgTx extends WrappedPgBase {
+  constructor(client: pg.PoolClient, readonly_: boolean) {
+    super(client, readonly_);
+  }
+
+  async destroy(): Promise<void> {}
+
+  multi<R>(_fn: (tx: WrappedPgClient) => Promise<R>): Promise<R> {
+    throw new Error("Nested transactions not supported");
+  }
+}
+
+export class WrappedPool extends WrappedPgBase {
+  #pool: pg.Pool;
+
+  constructor(connectionStringOrPool: string | pg.Pool, readonly_ = false) {
+    const pool =
+      typeof connectionStringOrPool === "string"
+        ? new pg.Pool({ connectionString: connectionStringOrPool })
+        : connectionStringOrPool;
+    super(pool, readonly_);
+    this.#pool = pool;
+  }
+
+  get _pool(): pg.Pool {
+    return this.#pool;
+  }
+
+  async destroy(): Promise<void> {
+    await this.#pool.end();
+  }
+
+  async multi<R>(fn: (tx: WrappedPgClient) => Promise<R>): Promise<R> {
+    const client = await this.#pool.connect();
+    const tx = new WrappedPgTx(client, this.readonly);
+    try {
+      await client.query("BEGIN");
+      const result = await fn(tx);
+      await client.query("COMMIT");
+      return result;
+    } catch (e) {
+      await rollbackQuietly(client);
+      throw e;
+    } finally {
+      client.release();
+    }
+  }
+}

src/db/postgres/query.ts

@@ -0,0 +1,192 @@
+import type { Abode } from "../types/Abode.js";
+import type { ClientApikey } from "../types/Apikey.js";
+import type { Resident } from "../types/Resident.js";
+import type { ClientUser } from "../types/User.js";
+import type { Note, PartialNote } from "../types/Note.js";
+import {
+  pgToAbode,
+  pgToClientApikey,
+  pgToClientUser,
+  pgToResident,
+  pgToNote,
+  pgToPartialNote,
+} from "./cast.js";
+import type { WrappedPgClient } from "./pool.js";
+import { sql, type SqlCode } from "./sql.js";
+
+type RawClientUser = {
+  uid: string;
+  email: string;
+  name: string;
+  flags: unknown;
+  created_at: Date;
+  updated_at: Date;
+};
+const sqlClientUser = sql`
+  SELECT u."uid", u."email", u."name", u."flags", u."created_at", u."updated_at"
+  FROM "users" u
+`;
+
+export async function selectClientUser(
+  db: WrappedPgClient,
+  where: SqlCode,
+): Promise<ClientUser | null> {
+  const raw = await db.get<RawClientUser>(sql`${sqlClientUser} WHERE ${where}`);
+  if (raw) return pgToClientUser(raw);
+  return null;
+}
+export async function selectClientUsers(
+  db: WrappedPgClient,
+  rest?: SqlCode,
+): Promise<ClientUser[]> {
+  const rows = await db.all<RawClientUser>(
+    rest ? sql`${sqlClientUser} ${rest}` : sqlClientUser,
+  );
+  return rows.map(pgToClientUser);
+}
+
+type RawAbode = {
+  aid: string;
+  name: string;
+  created_at: Date;
+  created_by: string | null;
+  updated_at: Date;
+  updated_by: string | null;
+};
+const sqlAbode = sql`
+  SELECT a."aid", a."name", a."created_at", a."created_by", a."updated_at", a."updated_by"
+  FROM "abodes" a
+`;
+
+export async function selectAbode(
+  db: WrappedPgClient,
+  where: SqlCode,
+): Promise<Abode | null> {
+  const raw = await db.get<RawAbode>(sql`${sqlAbode} WHERE ${where}`);
+  if (raw) return pgToAbode(raw);
+  return null;
+}
+export async function selectAbodes(
+  db: WrappedPgClient,
+  rest?: SqlCode,
+): Promise<Abode[]> {
+  const rows = await db.all<RawAbode>(
+    rest ? sql`${sqlAbode} ${rest}` : sqlAbode,
+  );
+  return rows.map(pgToAbode);
+}
+
+type RawResident = {
+  uid: string;
+  aid: string;
+  flags: unknown;
+  created_at: Date;
+  created_by: string | null;
+  updated_at: Date;
+  updated_by: string | null;
+};
+const sqlResident = sql`
+  SELECT "uid", "aid", "flags", "created_at", "created_by", "updated_at", "updated_by"
+  FROM "residents"
+`;
+
+export async function selectResident(
+  db: WrappedPgClient,
+  where: SqlCode,
+): Promise<Resident | null> {
+  const raw = await db.get<RawResident>(sql`${sqlResident} WHERE ${where}`);
+  if (raw) return pgToResident(raw);
+  return null;
+}
+export async function selectResidents(
+  db: WrappedPgClient,
+  where?: SqlCode,
+): Promise<Resident[]> {
+  const rows = await db.all<RawResident>(
+    where ? sql`${sqlResident} WHERE ${where}` : sqlResident,
+  );
+  return rows.map(pgToResident);
+}
+
+type RawClientApikey = {
+  uid: string;
+  kid: string;
+  name: string;
+  permissions: unknown;
+  created_at: Date;
+  expires_at: Date | null;
+};
+const sqlClientApikey = sql`
+  SELECT k."uid", k."kid", k."name", k."permissions", k."created_at", k."expires_at"
+  FROM "apikeys" k
+`;
+
+export async function selectClientApikey(
+  db: WrappedPgClient,
+  where: SqlCode,
+): Promise<ClientApikey | null> {
+  const raw = await db.get<RawClientApikey>(
+    sql`${sqlClientApikey} WHERE ${where}`,
+  );
+  if (raw) return pgToClientApikey(raw);
+  return null;
+}
+export async function selectClientApikeys(
+  db: WrappedPgClient,
+  where?: SqlCode,
+): Promise<ClientApikey[]> {
+  const rows = await db.all<RawClientApikey>(
+    where ? sql`${sqlClientApikey} WHERE ${where}` : sqlClientApikey,
+  );
+  return rows.map(pgToClientApikey);
+}
+
+type RawNote = {
+  nid: string;
+  aid: string;
+  name: string;
+  content: string;
+  properties: unknown;
+  created_at: Date;
+  created_by: string | null;
+  updated_at: Date;
+  updated_by: string | null;
+};
+const sqlNote = sql`
+  SELECT n."nid", n."aid", n."name", n."content", n."properties",
+         n."created_at", n."created_by", n."updated_at", n."updated_by"
+  FROM "notes" n
+`;
+
+type RawPartialNote = Omit<RawNote, "content">;
+const sqlPartialNote = sql`
+  SELECT n."nid", n."aid", n."name", n."properties",
+         n."created_at", n."created_by", n."updated_at", n."updated_by"
+  FROM "notes" n
+`;
+
+export async function selectNote(
+  db: WrappedPgClient,
+  where: SqlCode,
+): Promise<Note | null> {
+  const raw = await db.get<RawNote>(sql`${sqlNote} WHERE ${where}`);
+  return raw ? pgToNote(raw) : null;
+}
+export async function selectNotes(
+  db: WrappedPgClient,
+  where?: SqlCode,
+): Promise<Note[]> {
+  const rows = await db.all<RawNote>(
+    where ? sql`${sqlNote} WHERE ${where}` : sqlNote,
+  );
+  return rows.map(pgToNote);
+}
+export async function selectPartialNotes(
+  db: WrappedPgClient,
+  where?: SqlCode,
+): Promise<PartialNote[]> {
+  const rows = await db.all<RawPartialNote>(
+    where ? sql`${sqlPartialNote} WHERE ${where}` : sqlPartialNote,
+  );
+  return rows.map(pgToPartialNote);
+}

src/db/postgres/sql.ts

@@ -0,0 +1,82 @@
+export type SqlVar = string | number;
+export type SqlCode = { _sql: string; _vars: SqlVar[] };
+type SqlArg =
+  | { uuid: string }
+  | { text: string }
+  | { jsonb: unknown }
+  | { date: string }
+  | { int: number }
+  | { null: true }
+  | SqlCode;
+
+export function sql(text: TemplateStringsArray, ...args: SqlArg[]): SqlCode {
+  let code = "";
+  const vars: SqlVar[] = [];
+  for (const [i, part] of text.entries()) {
+    code += part;
+    if (i < args.length) {
+      const arg = args[i];
+      if ("uuid" in arg) {
+        code += "?";
+        vars.push(arg.uuid);
+      } else if ("text" in arg) {
+        code += "?";
+        vars.push(arg.text);
+      } else if ("jsonb" in arg) {
+        code += "?::jsonb";
+        vars.push(JSON.stringify(arg.jsonb));
+      } else if ("date" in arg) {
+        code += "?::timestamptz";
+        vars.push(arg.date);
+      } else if ("int" in arg) {
+        if (arg.int % 1) throw new Error("Not an integer");
+        code += "?";
+        vars.push(arg.int);
+      } else if ("null" in arg) {
+        code += "NULL";
+      } else {
+        code += arg._sql;
+        for (const v of arg._vars) vars.push(v);
+      }
+    }
+  }
+  return { _sql: code, _vars: vars };
+}
+
+export function catSql(a: SqlCode, b: SqlCode): SqlCode {
+  return {
+    _sql: a._sql + b._sql,
+    _vars: [...a._vars, ...b._vars],
+  };
+}
+export function joinSql(parts: SqlCode[], joiner: SqlCode): SqlCode {
+  return parts.reduce((a, b) => catSql(catSql(a, joiner), b));
+}
+
+export function unsafeSql(s: string): SqlCode {
+  return { _sql: s, _vars: [] };
+}
+
+export function calcUpdates<T extends object>(updater: {
+  [K in keyof T]: (value: NonNullable<T[K]>) => SqlCode;
+}): (obj: Partial<T>) => SqlCode[] {
+  return (obj) => {
+    const updates: SqlCode[] = [];
+    for (const [prop, update] of Object.entries(updater)) {
+      if (prop in obj) {
+        updates.push(
+          (update as (value: unknown) => SqlCode)(obj[prop as keyof T]!),
+        );
+      }
+    }
+    return updates;
+  };
+}
+
+// Rewrites every literal `?` into a numbered placeholder, so queries must
+// not contain Postgres's JSONB `?` / `?|` / `?&` operators (use
+// `jsonb_exists`, `jsonb_exists_any`, `jsonb_exists_all` instead).
+export function toPositional(sql: string): string {
+  let i = 0;
+  return sql.replace(/\?/g, () => `$${++i}`);
+}

src/db/postgres/url.ts

@@ -0,0 +1,21 @@
+export const pgProtocols = ["postgres:", "postgresql:"];
+
+export function isPgUrl(url: string): boolean {
+  try {
+    const urlObj = new URL(url);
+    return pgProtocols.includes(urlObj.protocol);
+  } catch {
+    return false;
+  }
+}
+
+export function parsePgUrl(url: string): {
+  connectionString: string;
+  readonly: boolean;
+} {
+  if (!isPgUrl(url)) throw new Error("Not a postgres: URL");
+  const urlObj = new URL(url);
+  const readonly = (urlObj.searchParams.get("readonly") ?? "0") !== "0";
+  urlObj.searchParams.delete("readonly");
+  return { connectionString: urlObj.toString(), readonly };
+}

src/db/sqlite/SqliteInterface.ts

@@ -33,6 +33,9 @@ import {
   selectClientApikeys,
   selectClientUser,
   selectClientUsers,
+  selectNote,
+  selectNotes,
+  selectPartialNotes,
   selectResident,
   selectResidents,
 } from "./query.js";
@@ -43,8 +46,22 @@ import type {
   UpdateNote,
 } from "../types/Note.js";
 import type { WrappedDb } from "./impl/types.js";
+import { Readable } from "node:stream";
+import readline from "node:readline";
+import {
+  EXPORT_KIND_ORDER,
+  type Exportable,
+  type ExportKind,
+  type ExportOptions,
+  type Importable,
+  type ImportOptions,
+  type ImportResult,
+} from "../types/ExportImport.js";
+import { isExportKind, kindAllowed, recordAllowed } from "../export/filter.js";
 
-export class SqliteInterface implements BackendDbInterface {
+export class SqliteInterface
+  implements BackendDbInterface, Exportable, Importable
+{
   #db: WrappedDb;
 
   constructor(db: WrappedDb) {
@@ -108,7 +125,7 @@ export class SqliteInterface implements BackendDbInterface {
         SELECT "uid", "email", "name", json("flags") AS "flags", "created_at", "updated_at", "password"
         FROM "users"
         WHERE "email" = ${{ text: email }}
-      `
+      `,
     );
     if (!rawUser) throw new NotFoundAbodeError();
     if (rawUser.password.startsWith("#")) throw new ConflictAbodeError();
@@ -122,7 +139,7 @@ export class SqliteInterface implements BackendDbInterface {
       sql`
         DELETE FROM "users"
         WHERE "uid" = ${{ uuid: id }}
-      `
+      `,
     );
     if (!changes) throw new NotFoundAbodeError();
   }
@@ -140,10 +157,10 @@ export class SqliteInterface implements BackendDbInterface {
               ${{ text: user.email }},
               ${{ text: user.name }},
               ${{ text: user.password }},${{ jsonb: user.flags }})
-          `
+          `,
         );
         return this.#getUserById(uid);
-      })
+      }),
     );
   }
   async updateUser(user: UpdateUser): Promise<ClientUser> {
@@ -177,11 +194,11 @@ export class SqliteInterface implements BackendDbInterface {
               "updated_at" = datetime('now', 'localtime', 'subsec'),
               ${joinSql(updates, sql`, `)}
             WHERE "uid" = ${{ uuid: user.uid }}
-          `
+          `,
         );
         if (!changes) throw new NotFoundAbodeError();
         return this.#getUserById(user.uid);
-      })
+      }),
     );
   }
 
@@ -202,7 +219,7 @@ export class SqliteInterface implements BackendDbInterface {
       sql`
         DELETE FROM "abodes"
         WHERE "aid" = ${{ uuid: id }}
-      `
+      `,
     );
     if (!changes) throw new NotFoundAbodeError();
   }
@@ -220,10 +237,10 @@ export class SqliteInterface implements BackendDbInterface {
               ${{ uuid: ctx.uid }},
               ${{ uuid: ctx.uid }}
             )
-          `
+          `,
         );
         return this.#getAbodeById(aid);
-      })
+      }),
     );
   }
   async updateAbode(abode: UpdateAbode, ctx: { uid: string }): Promise<Abode> {
@@ -242,11 +259,11 @@ export class SqliteInterface implements BackendDbInterface {
               "updated_by" = ${{ uuid: ctx.uid }},
               ${joinSql(updates, sql`, `)}
             WHERE "aid" = ${{ uuid: abode.aid }}
-          `
+          `,
         );
         if (!changes) throw new NotFoundAbodeError();
         return this.#getAbodeById(abode.aid);
-      })
+      }),
     );
   }
 
@@ -262,7 +279,7 @@ export class SqliteInterface implements BackendDbInterface {
   #getResidentById(uid: string, aid: string): Resident {
     const resident = selectResident(
       this.#db,
-      sql`"uid" = ${{ uuid: uid }} AND "aid" = ${{ uuid: aid }}`
+      sql`"uid" = ${{ uuid: uid }} AND "aid" = ${{ uuid: aid }}`,
     );
     if (!resident) throw new NotFoundAbodeError();
     return resident;
@@ -276,13 +293,13 @@ export class SqliteInterface implements BackendDbInterface {
       sql`
         DELETE FROM "residents"
         WHERE "uid" = ${{ uuid: uid }} AND "aid" = ${{ uuid: aid }}
-      `
+      `,
     );
     if (!changes) throw new NotFoundAbodeError();
   }
   async createResident(
     resident: CreateResident,
-    ctx: { uid: string }
+    ctx: { uid: string },
   ): Promise<Resident> {
     this.#checkReadonly();
     return this.#db.rethrow(() =>
@@ -297,15 +314,15 @@ export class SqliteInterface implements BackendDbInterface {
               ${{ uuid: ctx.uid }},
               ${{ uuid: ctx.uid }}
             )
-          `
+          `,
         );
         return this.#getResidentById(resident.uid, resident.aid);
-      })
+      }),
     );
   }
   async updateResident(
     resident: updateResident,
-    ctx: { uid: string }
+    ctx: { uid: string },
   ): Promise<Resident> {
     this.#checkReadonly();
     const updates = calcUpdates({
@@ -319,16 +336,16 @@ export class SqliteInterface implements BackendDbInterface {
             UPDATE "residents"
             SET
               "updated_at" = datetime('now', 'localtime', 'subsec'),
-              "updated_by" = ${{ uuid: ctx.uid }}
+              "updated_by" = ${{ uuid: ctx.uid }},
               ${joinSql(updates, sql`, `)}
             WHERE
               "uid" = ${{ uuid: resident.uid }}
               AND "aid" = ${{ uuid: resident.aid }}
-          `
+          `,
         );
         if (!changes) throw new NotFoundAbodeError();
         return this.#getResidentById(resident.uid, resident.aid);
-      })
+      }),
     );
   }
 
@@ -338,7 +355,7 @@ export class SqliteInterface implements BackendDbInterface {
       sql`
         JOIN "residents" r ON u."uid" = r."uid"
         WHERE r."aid" = ${{ uuid: id }}
-      `
+      `,
     );
   }
   async listAbodesByUserId(id: string): Promise<Abode[]> {
@@ -347,7 +364,7 @@ export class SqliteInterface implements BackendDbInterface {
       sql`
         JOIN "residents" r ON a."aid" = r."aid"
         WHERE r."uid" = ${{ uuid: id }}
-      `
+      `,
     );
   }
 
@@ -392,17 +409,24 @@ export class SqliteInterface implements BackendDbInterface {
       WHERE "uid" = ${{ uuid: uid }}
     `);
   }
+  async deleteSession(token: `as_${string}`): Promise<void> {
+    this.#checkReadonly();
+    this.#db.run(sql`
+      DELETE FROM "sessions"
+      WHERE "token" = ${{ text: token }}
+    `);
+  }
 
   #getApikeyByToken(token: `at_${string}`): ClientApikey {
     const apikey = selectClientApikey(
       this.#db,
-      sql`"token" = ${{ text: token }}`
+      sql`"token" = ${{ text: token }}`,
     );
     if (!apikey) throw new NotFoundAbodeError();
     return apikey;
   }
   async getUserByApikey(
-    token: `at_${string}`
+    token: `at_${string}`,
   ): Promise<[ClientUser, ClientApikey]> {
     const apikey = this.#getApikeyByToken(token);
     if (
@@ -422,7 +446,7 @@ export class SqliteInterface implements BackendDbInterface {
     return apikey;
   }
   async createApikey(
-    apikey: CreateApikey
+    apikey: CreateApikey,
   ): Promise<[ClientApikey, `at_${string}`]> {
     this.#checkReadonly();
     const token = createApikeyToken();
@@ -430,7 +454,7 @@ export class SqliteInterface implements BackendDbInterface {
     let expires = apikey.expires_at;
     if (expires === undefined)
       expires = new Date(
-        new Date().getTime() + 1000 * 60 * 60 * 24 * 365
+        new Date().getTime() + 1000 * 60 * 60 * 24 * 365,
       ).toISOString();
     if (expires && new Date(expires).getTime() < Date.now())
       throw new InvalidAbodeError();
@@ -458,24 +482,288 @@ export class SqliteInterface implements BackendDbInterface {
   }
 
   async listNotes(): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return selectPartialNotes(this.#db);
+  }
+  #getNoteById(nid: string): Note {
+    const note = selectNote(this.#db, sql`n."nid" = ${{ uuid: nid }}`);
+    if (!note) throw new NotFoundAbodeError();
+    return note;
   }
   async getNoteById(nid: string): Promise<Note> {
-    throw new Error("Unimplemented");
+    return this.#getNoteById(nid);
   }
   async deleteNoteById(nid: string): Promise<void> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    const { changes } = this.#db.run(
+      sql`DELETE FROM "notes" WHERE "nid" = ${{ uuid: nid }}`,
+    );
+    if (!changes) throw new NotFoundAbodeError();
   }
   async createNote(note: CreateNote, ctx: { uid: string }): Promise<Note> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    const nid = crypto.randomUUID();
+    return this.#db.rethrow(() =>
+      this.#db.multi(() => {
+        this.#db.run(sql`
+          INSERT INTO "notes"("nid", "aid", "name", "content", "properties", "created_by", "updated_by")
+          VALUES(
+            ${{ uuid: nid }},
+            ${{ uuid: note.aid }},
+            ${{ text: note.name }},
+            ${{ text: note.content ?? "" }},
+            ${{ jsonb: note.properties }},
+            ${{ uuid: ctx.uid }},
+            ${{ uuid: ctx.uid }}
+          )
+        `);
+        return this.#getNoteById(nid);
+      }),
+    );
   }
   async updateNote(note: UpdateNote, ctx: { uid: string }): Promise<Note> {
-    throw new Error("Unimplemented");
+    this.#checkReadonly();
+    const updates = calcUpdates({
+      name: (value: string) => sql`"name" = ${{ text: value }}`,
+      content: (value: string) => sql`"content" = ${{ text: value }}`,
+      properties: (value: object) => sql`"properties" = ${{ jsonb: value }}`,
+    })(note);
+    if (!updates.length) throw new InvalidAbodeError();
+    return this.#db.rethrow(() =>
+      this.#db.multi(() => {
+        const { changes } = this.#db.run(sql`
+          UPDATE "notes"
+          SET
+            "updated_at" = datetime('now', 'localtime', 'subsec'),
+            "updated_by" = ${{ uuid: ctx.uid }},
+            ${joinSql(updates, sql`, `)}
+          WHERE "nid" = ${{ uuid: note.nid }}
+        `);
+        if (!changes) throw new NotFoundAbodeError();
+        return this.#getNoteById(note.nid);
+      }),
+    );
   }
   async listNotesByAbodeId(aid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return selectPartialNotes(this.#db, sql`n."aid" = ${{ uuid: aid }}`);
   }
   async listNotesByUserId(uid: string): Promise<PartialNote[]> {
-    throw new Error("Unimplemented");
+    return selectPartialNotes(this.#db, sql`n."created_by" = ${{ uuid: uid }}`);
+  }
+
+  export(options: ExportOptions = {}): NodeJS.ReadableStream {
+    const { filter, signal } = options;
+    const db = this.#db;
+    const source = this.name;
+
+    // Per-table full materialization + JS-side per-record yielding (each
+    // `load()` is exactly one `WrappedDb.all()`). Kept lazy so the first query
+    // only fires once the destination starts pulling, and skipped entirely
+    // once the signal is aborted — no further reads after the destination
+    // goes away. Emission follows the FK-safe EXPORT_KIND_ORDER (part of the
+    // wire contract; see ExportImport.ts).
+    const loaders: Record<ExportKind, () => { uid?: string; aid?: string }[]> =
+      {
+        user: () => selectClientUsers(db),
+        abode: () => selectAbodes(db),
+        resident: () => selectResidents(db),
+        apikey: () => selectClientApikeys(db),
+        note: () => selectNotes(db),
+      };
+
+    async function* generate(): AsyncGenerator<string> {
+      if (signal?.aborted) return;
+      yield JSON.stringify({
+        kind: "meta",
+        data: {
+          v: 1,
+          exportedAt: new Date().toISOString(),
+          source,
+          filter: filter ?? {},
+        },
+      }) + "\n";
+      try {
+        for (const kind of EXPORT_KIND_ORDER) {
+          if (signal?.aborted) return;
+          if (!kindAllowed(filter, kind)) continue;
+          for (const row of loaders[kind]()) {
+            if (signal?.aborted) return;
+            if (recordAllowed(filter, kind, row)) {
+              yield JSON.stringify({ kind, data: row }) + "\n";
+            }
+          }
+        }
+      } catch (e) {
+        // Aborts unwind via early `return`, never here; a genuine mid-stream
+        // failure is surfaced as a trailing sentinel line (HTTP 200 headers
+        // are already flushed, so `convertError` can no longer apply).
+        if (signal?.aborted) return;
+        yield JSON.stringify({
+          kind: "error",
+          data: {
+            message: e instanceof Error ? e.message : String(e),
+            code: e instanceof Error ? e.name : undefined,
+          },
+        }) + "\n";
+      }
+    }
+
+    return Readable.from(generate());
+  }
+
+  async import(
+    source: NodeJS.ReadableStream,
+    options: ImportOptions = {},
+  ): Promise<ImportResult> {
+    this.#checkReadonly();
+    const { filter, signal } = options;
+    const db = this.#db;
+    const counts: Partial<Record<ExportKind, number>> = {};
+
+    const rl = readline.createInterface({
+      input: source,
+      crlfDelay: Infinity,
+      signal,
+    });
+
+    // Bulk restore trusts the export's referential integrity, and a filtered
+    // dump may legitimately reference `created_by`/`updated_by` users outside
+    // its scope. Suppress FK enforcement for the duration (can only be toggled
+    // outside a transaction) and restore it in `finally`.
+    db.run(sql`PRAGMA foreign_keys = OFF`);
+    db.run(sql`BEGIN`);
+    try {
+      for await (const raw of rl) {
+        signal?.throwIfAborted();
+        const line = raw.trim();
+        if (!line) continue;
+        let parsed: { kind?: unknown; data?: unknown };
+        try {
+          parsed = JSON.parse(line);
+        } catch {
+          throw new InvalidAbodeError();
+        }
+        if (parsed.kind === "meta") continue;
+        if (parsed.kind === "error") {
+          throw new Error(
+            `export stream reported an error: ${
+              (parsed.data as { message?: string })?.message ?? "unknown"
+            }`,
+          );
+        }
+        if (!isExportKind(parsed.kind)) continue;
+        if (!kindAllowed(filter, parsed.kind)) continue;
+        const data = parsed.data as { uid?: string; aid?: string };
+        if (!recordAllowed(filter, parsed.kind, data)) continue;
+        this.#importRecord(parsed.kind, parsed.data);
+        counts[parsed.kind] = (counts[parsed.kind] ?? 0) + 1;
+      }
+      // An abort while blocked on the source closes readline without throwing,
+      // so re-check before committing to guarantee no partial commit.
+      signal?.throwIfAborted();
+      db.run(sql`COMMIT`);
+    } catch (e) {
+      try {
+        db.run(sql`ROLLBACK`);
+      } catch {
+        /* already rolled back */
+      }
+      throw e;
+    } finally {
+      rl.close();
+      db.run(sql`PRAGMA foreign_keys = ON`);
+    }
+
+    return { counts };
+  }
+
+  #importRecord(kind: ExportKind, data: unknown): void {
+    const db = this.#db;
+    switch (kind) {
+      case "user": {
+        const u = data as ClientUser;
+        // `password` is never exported; imported users land on the schema
+        // default ('#unset') and must reset before they can log in.
+        db.run(sql`
+          INSERT INTO "users"("uid", "email", "name", "flags", "created_at", "updated_at")
+          VALUES(
+            ${{ uuid: u.uid }},
+            ${{ text: u.email }},
+            ${{ text: u.name }},
+            ${{ jsonb: u.flags }},
+            ${{ date: u.created_at }},
+            ${{ date: u.updated_at }}
+          )
+        `);
+        break;
+      }
+      case "abode": {
+        const a = data as Abode;
+        db.run(sql`
+          INSERT INTO "abodes"("aid", "name", "created_at", "created_by", "updated_at", "updated_by")
+          VALUES(
+            ${{ uuid: a.aid }},
+            ${{ text: a.name }},
+            ${{ date: a.created_at }},
+            ${a.created_by ? { uuid: a.created_by } : { null: true }},
+            ${{ date: a.updated_at }},
+            ${a.updated_by ? { uuid: a.updated_by } : { null: true }}
+          )
+        `);
+        break;
+      }
+      case "resident": {
+        const r = data as Resident;
+        db.run(sql`
+          INSERT INTO "residents"("uid", "aid", "flags", "created_at", "created_by", "updated_at", "updated_by")
+          VALUES(
+            ${{ uuid: r.uid }},
+            ${{ uuid: r.aid }},
+            ${{ jsonb: r.flags }},
+            ${{ date: r.created_at }},
+            ${r.created_by ? { uuid: r.created_by } : { null: true }},
+            ${{ date: r.updated_at }},
+            ${r.updated_by ? { uuid: r.updated_by } : { null: true }}
+          )
+        `);
+        break;
+      }
+      case "apikey": {
+        const k = data as ClientApikey;
+        // `token` is never exported; mint a fresh unique one so the record's
+        // metadata (kid/permissions/expiry) survives even though the original
+        // secret cannot.
+        db.run(sql`
+          INSERT INTO "apikeys"("uid", "kid", "token", "name", "permissions", "created_at", "expires_at")
+          VALUES(
+            ${{ uuid: k.uid }},
+            ${{ uuid: k.kid }},
+            ${{ text: createApikeyToken() }},
+            ${{ text: k.name }},
+            ${{ jsonb: k.permissions }},
+            ${{ date: k.created_at }},
+            ${k.expires_at ? { date: k.expires_at } : { null: true }}
+          )
+        `);
+        break;
+      }
+      case "note": {
+        const n = data as Note;
+        db.run(sql`
+          INSERT INTO "notes"("nid", "aid", "name", "content", "properties", "created_at", "created_by", "updated_at", "updated_by")
+          VALUES(
+            ${{ uuid: n.nid }},
+            ${{ uuid: n.aid }},
+            ${{ text: n.name }},
+            ${{ text: n.content ?? "" }},
+            ${{ jsonb: n.properties }},
+            ${{ date: n.created_at }},
+            ${n.created_by ? { uuid: n.created_by } : { null: true }},
+            ${{ date: n.updated_at }},
+            ${n.updated_by ? { uuid: n.updated_by } : { null: true }}
+          )
+        `);
+        break;
+      }
+    }
   }
 }

src/db/sqlite/SqliteMigrator.ts

@@ -16,12 +16,11 @@ export class SqliteMigrator implements Migrator {
   }
 
   #listAppliedMigrations():
-    | { id: number; name: string; applied_at: string }[]
-    | null {
+    { id: number; name: string; applied_at: string }[] | null {
     try {
       return this.#db
         .all<{ id: number; name: string; applied_at: string }>(
-          sql`SELECT "id", "name", "applied_at" FROM "_migrations" ORDER BY "id" ASC`
+          sql`SELECT "id", "name", "applied_at" FROM "_migrations" ORDER BY "id" ASC`,
         )
         .map((x) => ({ ...x, applied_at: sqliteToDate(x.applied_at) }));
     } catch (e) {
@@ -59,7 +58,7 @@ export class SqliteMigrator implements Migrator {
         throw new Error(`Applied migration ${id} (${name}) not known`);
       if (migration.name !== name)
         throw new Error(
-          `Applied migration ${id} (${name}) has a different name from expected (${migration.name})`
+          `Applied migration ${id} (${name}) has a different name from expected (${migration.name})`,
         );
     }
 
@@ -70,7 +69,7 @@ export class SqliteMigrator implements Migrator {
       throw new Error(
         `Cannot migrate backward, at ${current.at(-1)?.id ?? 0}, going to ${
           target.id
-        }`
+        }`,
       );
     }
 
@@ -94,7 +93,7 @@ export class SqliteMigrator implements Migrator {
           sql`
             INSERT INTO "_migrations"("id", "name")
             VALUES (${{ int: migration.id }}, ${{ text: migration.name }})
-          `
+          `,
         );
         this.#db.run(sql`COMMIT`);
       } catch (e) {

src/db/sqlite/cast.ts

@@ -1,5 +1,12 @@
 import type { Abode } from "../types/Abode.js";
 import type { ApikeyPermissions, ClientApikey } from "../types/Apikey.js";
+import type {
+  Note,
+  NoteProperties,
+  NoteType,
+  PartialNote,
+  PartialNoteProperties,
+} from "../types/Note.js";
 import type { Resident, ResidentFlags } from "../types/Resident.js";
 import type { ClientUser, PartialUser, UserFlags } from "../types/User.js";
 
@@ -15,7 +22,7 @@ export function uuidToSqlite(uuid: string) {
 }
 export function sqliteToUuid(uuid: Buffer | Uint8Array) {
   const hex = (uuid instanceof Buffer ? uuid : Buffer.from(uuid)).toString(
-    "hex"
+    "hex",
   );
   return [
     hex.slice(0, 8),
@@ -119,7 +126,7 @@ export function sqliteToResident(resident: {
 
 const defaultApikeyPermissions: ApikeyPermissions = {};
 export function sqliteToApikeyPermissions(
-  permissions: string
+  permissions: string,
 ): ApikeyPermissions {
   const parsed = JSON.parse(permissions);
   const out = { ...defaultApikeyPermissions };
@@ -160,3 +167,71 @@ export function sqliteToClientApikey(apikey: {
     expires_at: apikey.expires_at ? sqliteToDate(apikey.expires_at) : null,
   };
 }
+
+const validNoteTypes = new Set<NoteType>(["note"]);
+export function sqliteToNoteProperties(props: string): NoteProperties {
+  const parsed = JSON.parse(props);
+  const out: NoteProperties = {};
+  if (
+    typeof parsed === "object" &&
+    parsed &&
+    !Array.isArray(parsed) &&
+    validNoteTypes.has(parsed.type)
+  ) {
+    out.type = parsed.type;
+  }
+  return out;
+}
+
+export function sqliteToPartialNoteProperties(
+  props: string,
+): PartialNoteProperties {
+  const base = sqliteToNoteProperties(props);
+  return { type: base.type ?? "note" };
+}
+
+export function sqliteToNote(note: {
+  nid: Buffer | Uint8Array;
+  aid: Buffer | Uint8Array;
+  name: string;
+  content: string;
+  properties: string;
+  created_at: string;
+  created_by: Buffer | Uint8Array | null;
+  updated_at: string;
+  updated_by: Buffer | Uint8Array | null;
+}): Note {
+  return {
+    nid: sqliteToUuid(note.nid),
+    aid: sqliteToUuid(note.aid),
+    name: note.name,
+    content: note.content,
+    properties: sqliteToNoteProperties(note.properties),
+    created_at: sqliteToDate(note.created_at),
+    created_by: note.created_by ? sqliteToUuid(note.created_by) : null,
+    updated_at: sqliteToDate(note.updated_at),
+    updated_by: note.updated_by ? sqliteToUuid(note.updated_by) : null,
+  };
+}
+
+export function sqliteToPartialNote(note: {
+  nid: Buffer | Uint8Array;
+  aid: Buffer | Uint8Array;
+  name: string;
+  properties: string;
+  created_at: string;
+  created_by: Buffer | Uint8Array | null;
+  updated_at: string;
+  updated_by: Buffer | Uint8Array | null;
+}): PartialNote {
+  return {
+    nid: sqliteToUuid(note.nid),
+    aid: sqliteToUuid(note.aid),
+    name: note.name,
+    properties: sqliteToPartialNoteProperties(note.properties),
+    created_at: sqliteToDate(note.created_at),
+    created_by: note.created_by ? sqliteToUuid(note.created_by) : null,
+    updated_at: sqliteToDate(note.updated_at),
+    updated_by: note.updated_by ? sqliteToUuid(note.updated_by) : null,
+  };
+}

src/db/sqlite/getdb.dyn.ts

@@ -3,7 +3,7 @@ import { sqliteProtocols } from "./url.js";
 
 const getSqlite = () =>
   import(/* webpackChunkName: 'dbsource-sqlite' */ "./getdb.static.js").then(
-    (x) => x.default
+    (x) => x.default,
   );
 
 const getSqliteDynamic: GetDbDynamic = {

src/db/sqlite/impl/better-sqlite3.ts

@@ -6,10 +6,11 @@ import type { WrappedDb, WrappedDbOptions } from "./types.js";
 
 function getDatabase(
   path: string,
-  options?: Omit<sqlite.Options, "nativeBinding">
+  options?: Omit<sqlite.Options, "nativeBinding">,
 ): sqlite.Database {
   if (!natives.sqlite) throw new Error("No natives found for better-sqlite3");
   options = { ...options };
+  if (typeof options.readonly !== "boolean") delete options.readonly;
   if (typeof options.timeout !== "number") delete options.timeout;
   const db = new Sqlite(path, { ...options, nativeBinding: natives.sqlite });
   db.exec(pragma);

src/db/sqlite/impl/index.ts

@@ -4,7 +4,7 @@ import { node, bs3 } from "./implementations.js";
 export function getWrappedDb(
   kind: "any" | "node" | "bs3",
   path: string,
-  options: WrappedDbOptions
+  options: WrappedDbOptions,
 ): WrappedDb {
   if (kind === "node") {
     if (!node) throw new Error("Requesting unavailable node backend");

src/db/sqlite/query.ts

@@ -1,11 +1,14 @@
 import type { Abode } from "../types/Abode.js";
 import type { ClientApikey } from "../types/Apikey.js";
+import type { Note, PartialNote } from "../types/Note.js";
 import type { Resident } from "../types/Resident.js";
 import type { ClientUser } from "../types/User.js";
 import {
   sqliteToAbode,
   sqliteToClientApikey,
   sqliteToClientUser,
+  sqliteToNote,
+  sqliteToPartialNote,
   sqliteToResident,
 } from "./cast.js";
 import type { WrappedDb } from "./impl/types.js";
@@ -26,7 +29,7 @@ const sqlClientUser = sql`
 
 export function selectClientUser(
   db: WrappedDb,
-  where: SqlCode
+  where: SqlCode,
 ): ClientUser | null {
   const rawUser = db.get<RawClientUser>(sql`${sqlClientUser} WHERE ${where}`);
   if (rawUser) return sqliteToClientUser(rawUser);
@@ -34,7 +37,7 @@ export function selectClientUser(
 }
 export function selectClientUsers(db: WrappedDb, rest?: SqlCode): ClientUser[] {
   const rawUsers = db.all<RawClientUser>(
-    rest ? sql`${sqlClientUser} ${rest}` : sqlClientUser
+    rest ? sql`${sqlClientUser} ${rest}` : sqlClientUser,
   );
   return rawUsers.map(sqliteToClientUser);
 }
@@ -59,7 +62,7 @@ export function selectAbode(db: WrappedDb, where: SqlCode): Abode | null {
 }
 export function selectAbodes(db: WrappedDb, rest?: SqlCode): Abode[] {
   const rawAbodes = db.all<RawAbode>(
-    rest ? sql`${sqlAbode} ${rest}` : sqlAbode
+    rest ? sql`${sqlAbode} ${rest}` : sqlAbode,
   );
   return rawAbodes.map(sqliteToAbode);
 }
@@ -85,7 +88,7 @@ export function selectResident(db: WrappedDb, where: SqlCode): Resident | null {
 }
 export function selectResidents(db: WrappedDb, where?: SqlCode): Resident[] {
   const rawResidents = db.all<RawResident>(
-    where ? sql`${sqlResident} WHERE ${where}` : sqlResident
+    where ? sql`${sqlResident} WHERE ${where}` : sqlResident,
   );
   return rawResidents.map(sqliteToResident);
 }
@@ -105,20 +108,65 @@ const sqlClientApikey = sql`
 
 export function selectClientApikey(
   db: WrappedDb,
-  where: SqlCode
+  where: SqlCode,
 ): ClientApikey | null {
   const rawApikey = db.get<RawClientApikey>(
-    sql`${sqlClientApikey} WHERE ${where}`
+    sql`${sqlClientApikey} WHERE ${where}`,
   );
   if (rawApikey) return sqliteToClientApikey(rawApikey);
   return null;
 }
 export function selectClientApikeys(
   db: WrappedDb,
-  where: SqlCode
+  where?: SqlCode,
 ): ClientApikey[] {
   const rawApikeys = db.all<RawClientApikey>(
-    sql`${sqlClientApikey} WHERE ${where}`
+    where ? sql`${sqlClientApikey} WHERE ${where}` : sqlClientApikey,
   );
   return rawApikeys.map(sqliteToClientApikey);
 }
+
+type RawNote = {
+  nid: Buffer | Uint8Array;
+  aid: Buffer | Uint8Array;
+  name: string;
+  content: string;
+  properties: string;
+  created_at: string;
+  created_by: Buffer | Uint8Array | null;
+  updated_at: string;
+  updated_by: Buffer | Uint8Array | null;
+};
+const sqlNote = sql`
+  SELECT n."nid", n."aid", n."name", n."content", json(n."properties") AS "properties",
+         n."created_at", n."created_by", n."updated_at", n."updated_by"
+  FROM "notes" n
+`;
+
+type RawPartialNote = Omit<RawNote, "content">;
+const sqlPartialNote = sql`
+  SELECT n."nid", n."aid", n."name", json(n."properties") AS "properties",
+         n."created_at", n."created_by", n."updated_at", n."updated_by"
+  FROM "notes" n
+`;
+
+export function selectNote(db: WrappedDb, where: SqlCode): Note | null {
+  const raw = db.get<RawNote>(sql`${sqlNote} WHERE ${where}`);
+  if (raw) return sqliteToNote(raw);
+  return null;
+}
+export function selectNotes(db: WrappedDb, where?: SqlCode): Note[] {
+  const raws = db.all<RawNote>(
+    where ? sql`${sqlNote} WHERE ${where}` : sqlNote,
+  );
+  return raws.map(sqliteToNote);
+}
+export function selectPartialNotes(
+  db: WrappedDb,
+  where?: SqlCode,
+): PartialNote[] {
+  const raws = db.all<RawPartialNote>(
+    where ? sql`${sqlPartialNote} WHERE ${where}` : sqlPartialNote,
+  );
+  return raws.map(sqliteToPartialNote);
+}

src/db/sqlite/sql.ts

@@ -65,7 +65,7 @@ export function calcUpdates<T extends object>(updater: {
     for (const [prop, update] of Object.entries(updater)) {
       if (prop in obj) {
         updates.push(
-          (update as (value: unknown) => SqlCode)(obj[prop as keyof T]!)
+          (update as (value: unknown) => SqlCode)(obj[prop as keyof T]!),
         );
       }
     }

src/db/sqlite/url.ts

@@ -27,7 +27,7 @@ export function isSqliteUrl(url: string) {
 }
 
 export function parseSqliteUrl(
-  url: string
+  url: string,
 ): ["any" | "node" | "bs3", string, WrappedDbOptions] {
   if (!isSqliteUrl(url)) throw new Error("Not sqlite: protocol");
   const urlObj = new URL(url);
@@ -39,7 +39,7 @@ export function parseSqliteUrl(
     urlObj.protocol === "node+sqlite:"
       ? "node"
       : urlObj.protocol === "bs3+sqlite:"
-      ? "bs3"
-      : "any";
+        ? "bs3"
+        : "any";
   return [kind, urlObj.pathname, options];
 }

src/db/types/DbInterface.ts

@@ -40,11 +40,11 @@ export interface DbInterface {
   deleteResidentById(uid: string, aid: string): Promise<void>;
   createResident(
     resident: CreateResident,
-    ctx: { uid: string }
+    ctx: { uid: string },
   ): Promise<Resident>;
   updateResident(
     resident: updateResident,
-    ctx: { uid: string }
+    ctx: { uid: string },
   ): Promise<Resident>;
 
   // list residents by member
@@ -85,6 +85,7 @@ export interface BackendDbInterface extends DbInterface {
   // auth by session
   getUserBySession(token: `as_${string}`): Promise<ClientUser>;
   createSession(uid: string): Promise<`as_${string}`>;
+  deleteSession(token: `as_${string}`): Promise<void>;
 
   // auth by apikey
   getUserByApikey(token: `at_${string}`): Promise<[ClientUser, ClientApikey]>;
@@ -98,11 +99,12 @@ export function isBackendInterface(db: DbInterface): db is BackendDbInterface {
         "getUserByLogin",
         "getUserBySession",
         "createSession",
+        "deleteSession",
         "getUserByApikey",
       ] as const
     ).every(
       (x) =>
-        x in db && typeof (db as Partial<BackendDbInterface>)[x] === "function"
+        x in db && typeof (db as Partial<BackendDbInterface>)[x] === "function",
     )
   );
 }

src/db/types/ExportImport.ts

@@ -0,0 +1,110 @@
+import type { DbInterface } from "./DbInterface.js";
+
+/**
+ * The kinds of records that can travel through an export/import stream.
+ *
+ * `Session` is intentionally excluded: it has no CRUD/list surface in
+ * {@link DbInterface} and is ephemeral/non-portable between instances.
+ */
+export type ExportKind = "user" | "abode" | "resident" | "apikey" | "note";
+
+/**
+ * Canonical order in which record kinds are emitted into an export stream, and
+ * the order in which an importer may safely apply them.
+ *
+ * This ordering is **part of the wire contract**, not an implementation
+ * detail. It is FK-safe: every foreign key points only at a kind that appears
+ * earlier (or at the same kind, earlier in the stream), so an importer that
+ * inserts records one-by-one with referential integrity enforced never
+ * forward-references a row it hasn't inserted yet:
+ *
+ * - `abode.created_by`/`updated_by` → `user`
+ * - `resident.uid` → `user`, `resident.aid` → `abode`
+ * - `apikey.uid` → `user`
+ * - `note.aid` → `abode`, `note.created_by`/`updated_by` → `user`
+ *
+ * The sqlite backend can afford to relax this (it suspends FK enforcement for
+ * the load), but the postgres backend relies on it: it inserts sequentially
+ * with constraints live. Every {@link Exportable} MUST emit in this order, and
+ * reordering it is a breaking change to the format.
+ */
+export const EXPORT_KIND_ORDER = [
+  "user",
+  "abode",
+  "resident",
+  "apikey",
+  "note",
+] as const satisfies readonly ExportKind[];
+
+export type ExportFilter = {
+  /** Include only these kinds; omit = all kinds. */
+  kinds?: ExportKind[];
+  /** Excluded after `kinds` is applied. */
+  excludeKinds?: ExportKind[];
+  /** aid allowlist — scopes abode/resident/note. */
+  abodes?: string[];
+  /** uid allowlist — scopes user (and apikey, unless `apikeys` is set). */
+  users?: string[];
+  /**
+   * uid allowlist scoping apikey records specifically. When set it takes
+   * precedence over `users` for the `apikey` kind — used to export a
+   * non-admin's own keys while still exporting co-residents' *user* records
+   * for referential integrity, without leaking their apikey metadata. Absent =
+   * fall back to `users`.
+   */
+  apikeys?: string[];
+};
+
+export interface ExportOptions {
+  filter?: ExportFilter;
+  signal?: AbortSignal;
+}
+
+export interface Exportable {
+  /** Produce a stream of NDJSON lines (one JSON envelope per line). */
+  export(options?: ExportOptions): NodeJS.ReadableStream;
+}
+
+export interface ImportOptions {
+  filter?: ExportFilter;
+  signal?: AbortSignal;
+}
+
+export interface ImportResult {
+  counts: Partial<Record<ExportKind, number>>;
+}
+
+export interface Importable {
+  import(
+    source: NodeJS.ReadableStream,
+    options?: ImportOptions,
+  ): Promise<ImportResult>;
+}
+
+/**
+ * The NDJSON envelope written/read for every line. The leading line is a
+ * `meta` record; the record lines that follow are grouped by kind in
+ * {@link EXPORT_KIND_ORDER} (an FK-safe order importers may rely on); a
+ * trailing `error` record may appear if the source failed after streaming had
+ * already begun.
+ */
+export type ExportEnvelope =
+  | { kind: "meta"; data: ExportMeta }
+  | { kind: ExportKind; data: unknown }
+  | { kind: "error"; data: { message: string; code?: string } };
+
+export type ExportMeta = {
+  v: number;
+  exportedAt: string;
+  source: string;
+  /** The *effective* filter actually applied (may be narrower than requested). */
+  filter: ExportFilter;
+};
+
+export function isExportable(db: DbInterface): db is DbInterface & Exportable {
+  return typeof (db as Partial<Exportable>).export === "function";
+}
+
+export function isImportable(db: DbInterface): db is DbInterface & Importable {
+  return typeof (db as Partial<Importable>).import === "function";
+}

src/db/types/User.ts

@@ -27,7 +27,7 @@ export type LoginUser = {
 };
 
 export function isValidUserPassword(
-  password: string
+  password: string,
 ): password is User["password"] {
   if (password.startsWith("#")) {
     return ["unset"].includes(password.slice(1));

src/meta/dev/restart.ts

@@ -2,7 +2,7 @@ if (import.meta.hot) {
   import.meta.hot.on("message", (msg) => {
     if (
       msg.includes(
-        "A pending update was not accepted, and reached the root module:"
+        "A pending update was not accepted, and reached the root module:",
       )
     ) {
       throw new Error("[hot] Restarting due to unaccepted pending update");

src/meta/pack/natives.ts

@@ -32,23 +32,23 @@ async function getPackageJsonDir(path: string): Promise<string | null> {
 
 export async function findNative(
   module: string,
-  native: string
+  native: string,
 ): Promise<string> {
   const path = await getPackageJsonDir(
-    createRequire(import.meta.url).resolve(module)
+    createRequire(import.meta.url).resolve(module),
   );
   if (!path) throw new Error(`Cannot find module directory for ${module}`);
   const file = await find(path, native);
   if (!file)
     throw new Error(
-      `Cannot find native ${native} of package ${module} in ${path}`
+      `Cannot find native ${native} of package ${module} in ${path}`,
     );
   return file;
 }
 
 export async function tryFindNative(
   module: string,
-  native: string
+  native: string,
 ): Promise<string | null> {
   try {
     return await findNative(module, native);

src/meta/pack/validators.ts

@@ -22,8 +22,8 @@ export async function webpack(): Promise<{ code: string }> {
   let code: string = standaloneCode(
     validator,
     Object.fromEntries(
-      Object.entries(schemas).map(([id, schema]) => [id, schema.$id])
-    )
+      Object.entries(schemas).map(([id, schema]) => [id, schema.$id]),
+    ),
   );
 
   // assign the .schema ourselves to the validation functions

src/react/contexts/PopupManager.tsx

@@ -12,7 +12,7 @@ export interface PopupManagerContextData {
   openPopup(popup: ComponentType<{ id: string; onClose: () => void }>): string;
   openPopup<T>(
     popup: ComponentType<{ id: string; onClose: () => void } & T>,
-    props: T
+    props: T,
   ): string;
 
   closePopup(id: string): void;
@@ -34,7 +34,7 @@ export function PopupManager({ children }: { children: ReactNode }) {
   const openPopup = useCallback<PopupManagerContextData["openPopup"]>(
     (
       Component: ComponentType<{ id: string; onClose: () => void }>,
-      props = {}
+      props = {},
     ) => {
       const id = crypto.randomUUID();
       Object.assign(props, {
@@ -45,14 +45,14 @@ export function PopupManager({ children }: { children: ReactNode }) {
       setPopups((prev) => [...prev, { id, Component, props }]);
       return id;
     },
-    []
+    [],
   );
   const closePopup = useCallback((id: string) => {
     setPopups((prev) => prev.filter((x) => x.id !== id));
   }, []);
   const ctx = useMemo<PopupManagerContextData>(
     () => ({ openPopup, closePopup }),
-    []
+    [],
   );
 
   return (

src/react/hooks/data/residents.ts

@@ -19,7 +19,7 @@ export function useDataResidentsByAbodeId(aid: string) {
   const status = useLoad(loadResidentsByAbodeId, { aid });
   const residents = useMemo(
     () => Object.values(allResidents).filter((x) => x.aid === aid),
-    [allResidents, aid]
+    [allResidents, aid],
   );
   return { ...status, residents };
 }
@@ -29,7 +29,7 @@ export function useDataResidentsByUserId(uid: string) {
   const status = useLoad(loadResidentsByUserId, { uid });
   const residents = useMemo(
     () => Object.values(allResidents).filter((x) => x.uid === uid),
-    [allResidents, uid]
+    [allResidents, uid],
   );
   return { ...status, residents };
 }

src/react/hooks/useAction.ts

@@ -5,7 +5,7 @@ import type { Store } from "../store/store.js";
 import { useStore } from "../store/react.js";
 
 export function useAction<P extends any[], R>(
-  action: (...params: [...P, { db: DbInterface; store: Store }]) => Promise<R>
+  action: (...params: [...P, { db: DbInterface; store: Store }]) => Promise<R>,
 ): (...args: P) => Promise<R> {
   const db = use(DbContext);
   const store = useStore();
@@ -15,6 +15,6 @@ export function useAction<P extends any[], R>(
       if (!db) throw new Error("DB not present");
       return action(...params, { db, store });
     },
-    [action, db]
+    [action, db],
   );
 }

src/react/hooks/useLoad.ts

@@ -32,7 +32,7 @@ export function useLoad<P>(loader: Loader<P>, params?: P): UseLoadResult {
 
   const refresh = useCallback(
     () => load({ loader, params: params!, store, db, refresh: true }),
-    [loader, params, db]
+    [loader, params, db],
   );
 
   return {

src/react/store/actions/abodes.ts

@@ -8,7 +8,7 @@ import type { Store } from "../store.js";
 
 export async function deleteAbodeById(
   aid: string,
-  { store, db }: { store: Store; db: DbInterface }
+  { store, db }: { store: Store; db: DbInterface },
 ): Promise<void> {
   await Promise.all([
     waitForLoadIfLoading(store, "loadAllAbodes"),
@@ -22,7 +22,7 @@ export async function deleteAbodeById(
 
 export async function updateAbode(
   abode: UpdateAbode,
-  { store, db }: { store: Store; db: DbInterface }
+  { store, db }: { store: Store; db: DbInterface },
 ): Promise<void> {
   await Promise.all([
     waitForLoadIfLoading(store, "loadAllAbodes"),
@@ -38,7 +38,7 @@ export async function updateAbode(
 
 export async function createAbode(
   abode: CreateAbode,
-  { store, db }: { store: Store; db: DbInterface }
+  { store, db }: { store: Store; db: DbInterface },
 ): Promise<string> {
   await waitForLoadIfLoading(store, "loadAllAbodes");
 

src/react/store/actions/users.ts

@@ -7,7 +7,7 @@ import type { Store } from "../store.js";
 
 export async function deleteUserById(
   uid: string,
-  { store, db }: { store: Store; db: DbInterface }
+  { store, db }: { store: Store; db: DbInterface },
 ): Promise<void> {
   await Promise.all([
     waitForLoadIfLoading(store, "loadAllUsers"),
@@ -24,7 +24,7 @@ export async function deleteUserById(
 
 export async function updateUser(
   user: UpdateUser,
-  { store, db }: { store: Store; db: DbInterface }
+  { store, db }: { store: Store; db: DbInterface },
 ): Promise<void> {
   await Promise.all([
     waitForLoadIfLoading(store, "loadAllUsers"),
@@ -41,7 +41,7 @@ export async function updateUser(
 
 export async function createUser(
   user: CreateUser,
-  { store, db }: { store: Store; db: DbInterface }
+  { store, db }: { store: Store; db: DbInterface },
 ): Promise<string> {
   await waitForLoadIfLoading(store, "loadAllUsers");
 

src/react/store/load.ts

@@ -48,7 +48,7 @@ async function loadImpl<P>({
     setLoading([
       id,
       { status: refresh ? "refreshing" : "loading", type, params },
-    ])
+    ]),
   );
   const controller = new AbortController();
   try {
@@ -69,7 +69,10 @@ async function loadImpl<P>({
     store.dispatch(setLoading([id, { status: "loaded", type, params }]));
   } catch (e) {
     store.dispatch(
-      setLoading([id, { status: "error", type, params, error: objectError(e) }])
+      setLoading([
+        id,
+        { status: "error", type, params, error: objectError(e) },
+      ]),
     );
     throw e;
   }
@@ -114,7 +117,7 @@ export function loader<P>(loader: Loader<P>): Loader<P> {
 export async function waitForLoadIfLoading(
   store: Store,
   id: string,
-  { signal }: { signal?: AbortSignal } = {}
+  { signal }: { signal?: AbortSignal } = {},
 ) {
   if (!getLoadingStatus(store.getState(), id)) return;
   return waitFor(
@@ -123,6 +126,6 @@ export async function waitForLoadIfLoading(
       const status = getLoadingStatus(state, id);
       return status === "loaded" || status === "error";
     },
-    { signal }
+    { signal },
   );
 }

src/react/store/react.tsx

@@ -16,7 +16,7 @@ export function Provider(
   props: Omit<ProviderProps, "context" | "store" | "serverState"> & {
     store: Store;
     serverState?: State;
-  }
+  },
 ) {
   return <RawProvider context={AbodeStoreContext} {...props} />;
 }

src/react/store/slices/loading.ts

@@ -40,7 +40,7 @@ const loadingSlice = createSlice({
   reducers: {
     setLoading: (
       state,
-      action: PayloadAction<[id: string, state: LoadingState]>
+      action: PayloadAction<[id: string, state: LoadingState]>,
     ) => {
       state[action.payload[0]] = action.payload[1];
     },

src/react/store/slices/users.ts

@@ -19,7 +19,7 @@ const usersSlice = createSlice({
     getUser: usersSelectors.selectById,
     getUserByEmail: (state, email: string) =>
       Object.values(state.entities).find(
-        (x): x is ClientUser => "email" in x && x.email === email
+        (x): x is ClientUser => "email" in x && x.email === email,
       ),
     getUsers: usersSelectors.selectEntities,
     getUserIds: usersSelectors.selectIds,

src/react/store/utils.ts

@@ -3,7 +3,7 @@ import type { State, Store } from "./store.js";
 export async function waitFor(
   store: Store,
   cond: (state: State) => boolean,
-  { signal }: { signal?: AbortSignal } = {}
+  { signal }: { signal?: AbortSignal } = {},
 ): Promise<void> {
   return new Promise<void>((ok, ko) => {
     signal?.throwIfAborted();
@@ -28,7 +28,7 @@ export async function waitFor(
       () => {
         controller.abort();
       },
-      { signal: controller.signal }
+      { signal: controller.signal },
     );
   });
 }

src/schema/rawSchemas.ts

@@ -1,23 +1,23 @@
-export { default as user } from "./user/user.schema.json" with {type: 'json'};
-export { default as createuser } from "./user/createuser.schema.json" with {type: 'json'};
-export { default as updateuser } from "./user/updateuser.schema.json" with {type: 'json'};
-export { default as partialuser } from "./user/partialuser.schema.json" with {type: 'json'};
-export { default as clientuser } from "./user/clientuser.schema.json" with {type: 'json'};
-export { default as userflags } from "./user/userflags.schema.json" with {type: 'json'};
-export { default as loginuser } from "./user/loginuser.schema.json" with {type: 'json'};
+export { default as user } from "./user/user.schema.json" with { type: "json" };
+export { default as createuser } from "./user/createuser.schema.json" with { type: "json" };
+export { default as updateuser } from "./user/updateuser.schema.json" with { type: "json" };
+export { default as partialuser } from "./user/partialuser.schema.json" with { type: "json" };
+export { default as clientuser } from "./user/clientuser.schema.json" with { type: "json" };
+export { default as userflags } from "./user/userflags.schema.json" with { type: "json" };
+export { default as loginuser } from "./user/loginuser.schema.json" with { type: "json" };
 
-export { default as abode } from './abode/abode.schema.json' with {type: 'json'};
-export { default as createabode } from './abode/createabode.schema.json' with {type: 'json'};
-export { default as updateabode } from './abode/updateabode.schema.json' with {type: 'json'};
+export { default as abode } from "./abode/abode.schema.json" with { type: "json" };
+export { default as createabode } from "./abode/createabode.schema.json" with { type: "json" };
+export { default as updateabode } from "./abode/updateabode.schema.json" with { type: "json" };
 
-export { default as resident } from './resident/resident.schema.json' with {type: 'json'};
-export { default as createresident } from './resident/createresident.schema.json' with {type: 'json'};
-export { default as updateresident } from './resident/updateresident.schema.json' with {type: 'json'};
-export { default as residentflags } from './resident/residentflags.schema.json' with {type: 'json'};
+export { default as resident } from "./resident/resident.schema.json" with { type: "json" };
+export { default as createresident } from "./resident/createresident.schema.json" with { type: "json" };
+export { default as updateresident } from "./resident/updateresident.schema.json" with { type: "json" };
+export { default as residentflags } from "./resident/residentflags.schema.json" with { type: "json" };
 
-export { default as createapikey } from './apikey/createapikey.schema.json' with {type: 'json'};
-export { default as apikeypermissions } from './apikey/apikeypermissions.schema.json' with {type: 'json'};
+export { default as createapikey } from "./apikey/createapikey.schema.json" with { type: "json" };
+export { default as apikeypermissions } from "./apikey/apikeypermissions.schema.json" with { type: "json" };
 
-export { default as createnote } from './note/createnote.schema.json' with {type: 'json'};
-export { default as updatenote } from './note/updatenote.schema.json' with {type: 'json'};
-export { default as partialnoteproperties } from './note/partialnoteproperties.schema.json' with {type: 'json'};
+export { default as createnote } from "./note/createnote.schema.json" with { type: "json" };
+export { default as updatenote } from "./note/updatenote.schema.json" with { type: "json" };
+export { default as partialnoteproperties } from "./note/partialnoteproperties.schema.json" with { type: "json" };

src/schema/schemas.ts

@@ -39,7 +39,7 @@ function checkSchema(name: string, schema: AnySchema) {
   if (!schema.$id) throw new Error(`Missing $id for schema ${name}`);
   if (
     !schema.$id.match(
-      /^https:\/\/abode\.codi\.moe\/schema\/[a-zA-Z0_9_-]+\.schema\.json$/
+      /^https:\/\/abode\.codi\.moe\/schema\/[a-zA-Z0_9_-]+\.schema\.json$/,
     )
   )
     throw new Error(`Unexpected $id for schema ${name}`);

src/schema/validators.ts

@@ -18,7 +18,7 @@ const validators = Object.fromEntries(
   Object.entries(schemas).map(([name, schema]) => [
     name,
     validator.compile(schema),
-  ])
+  ]),
 ) as unknown as {
   [T in keyof Types]: {
     (obj: unknown): obj is Types[T];

src/tui/App.tsx

@@ -69,7 +69,7 @@ function App() {
     (input, key) => {
       if (input === "q" || key.escape) app.exit();
     },
-    { isActive }
+    { isActive },
   );
 
   const [activeCollection, setActiveCollection] =

src/tui/components/panels/AbodesPanel.tsx

@@ -41,11 +41,11 @@ export function AbodesPanel() {
 
   const onSelect = useCallback(
     (abode: Abode) => openPopup(AbodePopup, { aid: abode.aid }),
-    [openPopup]
+    [openPopup],
   );
   const buttons = useMemo<ButtonListItem[]>(
     () => [{ children: "New", onClick: () => openPopup(CreateAbodePopup) }],
-    [openPopup]
+    [openPopup],
   );
 
   return (

src/tui/components/panels/UsersPanel.tsx

@@ -59,11 +59,11 @@ export function UsersPanel() {
 
   const onSelect = useCallback(
     (user: ClientUser | PartialUser) => openPopup(UserPopup, { uid: user.uid }),
-    [openPopup]
+    [openPopup],
   );
   const buttons = useMemo<ButtonListItem[]>(
     () => [{ children: "New", onClick: () => openPopup(CreateUserPopup) }],
-    [openPopup]
+    [openPopup],
   );
 
   return (

src/tui/components/ui/Button.tsx

@@ -18,7 +18,7 @@ export function Button({
     (input, key) => {
       if (input === " " || key.return) onClick();
     },
-    { isActive: isFocused }
+    { isActive: isFocused },
   );
 
   return <Text inverse={isFocused}>[{children}]</Text>;
@@ -66,7 +66,7 @@ export function ButtonList({
         setSelected((prev) => (prev - 1 + buttons.length) % buttons.length);
       }
     },
-    { isActive: isFocused || forceFocus || false }
+    { isActive: isFocused || forceFocus || false },
   );
 
   return (

src/tui/components/ui/ListBox.tsx

@@ -49,7 +49,7 @@ export function ListBox<T extends string>({
         setSelected(items[(items.indexOf(selected) + 1) % items.length]);
       } else if (key.upArrow) {
         setSelected(
-          items[(items.indexOf(selected) - 1 + items.length) % items.length]
+          items[(items.indexOf(selected) - 1 + items.length) % items.length],
         );
       } else if (key.pageUp) {
         setSelected(items[0]);
@@ -57,7 +57,7 @@ export function ListBox<T extends string>({
         setSelected(items[items.length - 1]);
       }
     },
-    { isActive: isFocused }
+    { isActive: isFocused },
   );
 
   return (

src/tui/components/ui/ListDisplay.tsx

@@ -36,14 +36,14 @@ export function ListDisplay<T>({
         onSelect?.(items[selected]);
       }
     },
-    { isActive: isFocused }
+    { isActive: isFocused },
   );
 
   useEffect(() => {
     if (selected < start) setStart(selected);
     else if (selected >= slice)
       setStart(
-        Math.max(Math.min(selected - slice + start + 1, items.length - 1), 0)
+        Math.max(Math.min(selected - slice + start + 1, items.length - 1), 0),
       );
   }, [selected, start, slice, items.length]);
   useEffect(() => {
@@ -56,7 +56,7 @@ export function ListDisplay<T>({
 
   const indexed = useMemo(
     () => items.map((item, index) => ({ item, index })),
-    [items]
+    [items],
   );
 
   return (

src/tui/components/ui/Popup.tsx

@@ -16,7 +16,7 @@ export function Popup({
     (_, key) => {
       if (key.escape) onClose?.();
     },
-    { isActive: active && !!onClose }
+    { isActive: active && !!onClose },
   );
 
   return (

src/tui/components/ui/SearchPanel.tsx

@@ -52,7 +52,7 @@ export function SearchPanel<T>({
         refresh?.();
       }
     },
-    { isActive: isFocused && !!refresh }
+    { isActive: isFocused && !!refresh },
   );
 
   const topbar = !!match || !!buttons?.length;

src/util/hash.ts

@@ -2,13 +2,13 @@ import { argon2id, argon2Verify } from "hash-wasm";
 
 export async function validatePassword(
   password: string,
-  hash: string
+  hash: string,
 ): Promise<boolean> {
   return await argon2Verify({ password, hash });
 }
 
 export async function hashPassword(
-  password: string
+  password: string,
 ): Promise<`$${string}$${string}`> {
   const salt = new Uint8Array(16);
   crypto.getRandomValues(salt);

src/util/xmlwriter.ts

@@ -7,11 +7,11 @@ const escapes = {
 };
 
 function parseAdd<T>(
-  rest: (Record<string, string> | string | ((writer: XmlWriter) => T))[]
+  rest: (Record<string, string> | string | ((writer: XmlWriter) => T))[],
 ): [
   props?: Record<string, string>,
   content?: string,
-  children?: (writer: XmlWriter) => T
+  children?: (writer: XmlWriter) => T,
 ] {
   let props: Record<string, string> | undefined;
   let children: ((writer: XmlWriter) => T) | undefined;
@@ -55,7 +55,7 @@ export class XmlWriter {
     tag: string,
     props?: Record<string, string>,
     content?: string,
-    children?: NonNullable<unknown>
+    children?: NonNullable<unknown>,
   ) {
     const top = this.#stack.at(-1);
     if (top && !top.children) {
@@ -104,7 +104,7 @@ export class XmlWriter {
   add(
     tag: string,
     props: Record<string, string>,
-    children: (writer: XmlWriter) => void
+    children: (writer: XmlWriter) => void,
   ): XmlWriter;
   add(
     tag: string,
@@ -125,23 +125,21 @@ export class XmlWriter {
   addAsync(
     tag: string,
     props: Record<string, string>,
-    content: string
+    content: string,
   ): Promise<void>;
   addAsync(
     tag: string,
-    children: (writer: XmlWriter) => Promise<void>
+    children: (writer: XmlWriter) => Promise<void>,
   ): Promise<void>;
   addAsync(
     tag: string,
     props: Record<string, string>,
-    children: (writer: XmlWriter) => Promise<void>
+    children: (writer: XmlWriter) => Promise<void>,
   ): Promise<void>;
   async addAsync(
     tag: string,
     ...rest: (
-      | Record<string, string>
-      | string
-      | ((writer: XmlWriter) => Promise<void>)
+      Record<string, string> | string | ((writer: XmlWriter) => Promise<void>)
     )[]
   ): Promise<void> {
     const [props, content, children] = parseAdd(rest);
@@ -164,7 +162,7 @@ export class XmlWriter {
       | Parameters<InstanceType<typeof XmlWriter>["add"]>
       | [
           NonNullable<ConstructorParameters<typeof XmlWriter>[0]>,
-          ...Parameters<InstanceType<typeof XmlWriter>["add"]>
+          ...Parameters<InstanceType<typeof XmlWriter>["add"]>,
         ]
   ): string {
     let options: ConstructorParameters<typeof XmlWriter>[0];
@@ -172,7 +170,7 @@ export class XmlWriter {
       options = rest.shift()! as ConstructorParameters<typeof XmlWriter>[0];
     }
     return new XmlWriter(options).add(
-      ...(rest as Parameters<InstanceType<typeof XmlWriter>["add"]>)
+      ...(rest as Parameters<InstanceType<typeof XmlWriter>["add"]>),
     ).content;
   }
 
@@ -188,7 +186,7 @@ export class XmlWriter {
       | Parameters<InstanceType<typeof XmlWriter>["addAsync"]>
       | [
           NonNullable<ConstructorParameters<typeof XmlWriter>[0]>,
-          ...Parameters<InstanceType<typeof XmlWriter>["addAsync"]>
+          ...Parameters<InstanceType<typeof XmlWriter>["addAsync"]>,
         ]
   ): Promise<string> {
     let options: ConstructorParameters<typeof XmlWriter>[0];
@@ -197,7 +195,7 @@ export class XmlWriter {
     }
     const writer = new XmlWriter(options);
     await writer.addAsync(
-      ...(rest as Parameters<InstanceType<typeof XmlWriter>["addAsync"]>)
+      ...(rest as Parameters<InstanceType<typeof XmlWriter>["addAsync"]>),
     );
     return writer.content;
   }

src/webapi/apirouter.ts

@@ -11,10 +11,43 @@ import {
   loginuser,
   updateabode,
   updateresident,
+  updatenote,
   updateuser,
 } from "../schema/validators.js";
 import { authenticate } from "./middleware/authenticate.js";
-import { InvalidAbodeError, NotFoundAbodeError } from "../db/types/errors.js";
+import {
+  InvalidAbodeError,
+  NotAuthorizedAbodeError,
+  NotFoundAbodeError,
+} from "../db/types/errors.js";
+import { isExportable } from "../db/types/ExportImport.js";
+import type { ExportFilter, ExportKind } from "../db/types/ExportImport.js";
+import { intersectExportFilters, isExportKind } from "../db/export/filter.js";
+import { computeForcedExportFilter } from "./exportScope.js";
+import {
+  hasGlobalUserVisibility,
+  hideUserEmail,
+  userForCaller,
+} from "./userVisibility.js";
+
+function parseExportFilter(query: Record<string, unknown>): ExportFilter {
+  const list = (v: unknown): string[] | undefined => {
+    if (typeof v !== "string" || !v) return undefined;
+    return v.split(",").filter(Boolean);
+  };
+  const kinds = (v: unknown): ExportKind[] | undefined =>
+    list(v)?.filter(isExportKind);
+  const filter: ExportFilter = {};
+  const k = kinds(query.kinds);
+  if (k) filter.kinds = k;
+  const ek = kinds(query.excludeKinds);
+  if (ek) filter.excludeKinds = ek;
+  const abodes = list(query.abodes);
+  if (abodes) filter.abodes = abodes;
+  const users = list(query.users);
+  if (users) filter.users = users;
+  return filter;
+}
 
 export function apirouter(db: BackendDbInterface): KoaRouter {
   const router = new KoaRouter();
@@ -28,6 +61,8 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
   });
   router.post("/auth/logout", authenticate(db), async (ctx) => {
     if (ctx.session!.source !== "session") throw new InvalidAbodeError();
+    const token = ctx.cookies.get("abode_session");
+    if (token) await db.deleteSession(token as `as_${string}`);
     ctx.cookies.set("abode_session", "", { expires: new Date("1970-01-01") });
     ctx.status = 204;
   });
@@ -39,26 +74,66 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
     ctx.status = 204;
   });
 
+  router.get("/export", authenticate(db), async (ctx) => {
+    // Everything that can throw a domain error runs *before* any byte is
+    // written, so `convertError` still applies. Once `ctx.body` is a stream,
+    // a mid-stream failure surfaces as a trailing `error` NDJSON line instead.
+    const forced = await computeForcedExportFilter(db, {
+      user: ctx.user!,
+      session: ctx.session!,
+    });
+    const effective = intersectExportFilters(
+      parseExportFilter(ctx.query),
+      forced,
+    );
+    if (!isExportable(db)) {
+      ctx.status = 501;
+      ctx.body = { ok: false, error: "export_unsupported" };
+      return;
+    }
+    const ac = new AbortController();
+    ctx.res.on("close", () => {
+      if (!ctx.res.writableEnded) ac.abort();
+    });
+    ctx.type = "application/x-ndjson";
+    ctx.body = db.export({ filter: effective, signal: ac.signal });
+  });
+
   router.use("/users", authenticate(db));
   router.get("/users", async (ctx) => {
-    ctx.body = await db.listUsers();
+    const users = await db.listUsers();
+    ctx.body = users.map((user) =>
+      userForCaller(user, { user: ctx.user!, session: ctx.session! }),
+    );
   });
   router.post("/users", jsonBody({ validate: createuser }), async (ctx) => {
     ctx.body = await db.createUser(ctx.request.body);
   });
   router.get("/users/by-email", async (ctx) => {
     if (typeof ctx.query.email !== "string") throw new InvalidAbodeError();
+    if (
+      !hasGlobalUserVisibility({
+        user: ctx.user!,
+        session: ctx.session!,
+      })
+    ) {
+      throw new NotAuthorizedAbodeError();
+    }
     ctx.body = await db.getUserByEmail(ctx.query.email);
   });
   router.get("/users/:uid", async (ctx) => {
-    ctx.body = await db.getUserById(ctx.params.uid);
+    const user = await db.getUserById(ctx.params.uid);
+    ctx.body = userForCaller(user, {
+      user: ctx.user!,
+      session: ctx.session!,
+    });
   });
   router.patch(
     "/users/:uid",
     jsonBody({ validate: updateuser, includeParams: ["uid"] }),
     async (ctx) => {
       ctx.body = await db.updateUser(ctx.request.body);
-    }
+    },
   );
   router.delete("/users/:uid", async (ctx) => {
     await db.deleteUserById(ctx.params.uid);
@@ -79,7 +154,7 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
     async (ctx) => {
       const [apikey, token] = await db.createApikey(ctx.request.body);
       ctx.body = { apikey, token };
-    }
+    },
   );
   router.get("/users/:uid/apikeys/:kid", async (ctx) => {
     const apikey = await db.getApikeyById(ctx.params.kid);
@@ -92,11 +167,11 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
     await db.deleteApikeyById(ctx.params.kid);
     ctx.status = 204;
   });
-  router.post("/user/:uid/auth/clear-sessions", async (ctx) => {
+  router.post("/users/:uid/auth/clear-sessions", async (ctx) => {
     await db.deleteSessionsByUser(ctx.params.uid);
     ctx.status = 204;
   });
-  router.get("/user/:uid/notes", async (ctx) => {
+  router.get("/users/:uid/notes", async (ctx) => {
     ctx.body = await db.listNotesByUserId(ctx.params.uid);
   });
 
@@ -115,7 +190,7 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
     jsonBody({ validate: updateabode, includeParams: ["aid"] }),
     async (ctx) => {
       ctx.body = await db.updateAbode(ctx.request.body, { uid: ctx.user!.uid });
-    }
+    },
   );
   router.delete("/abodes/:aid", async (ctx) => {
     await db.deleteAbodeById(ctx.params.aid);
@@ -125,7 +200,24 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
     ctx.body = await db.listResidentsByAbodeId(ctx.params.aid);
   });
   router.get("/abodes/:aid/users", async (ctx) => {
-    ctx.body = await db.listUsersByAbodeId(ctx.params.aid);
+    const users = await db.listUsersByAbodeId(ctx.params.aid);
+    const globalVisibility = hasGlobalUserVisibility({
+      user: ctx.user!,
+      session: ctx.session!,
+    });
+    const residents = globalVisibility
+      ? []
+      : await db.listResidentsByAbodeId(ctx.params.aid);
+    const abodeAdmin = residents.some(
+      (resident) =>
+        resident.uid === ctx.user!.uid && resident.flags.admin === true,
+    );
+    ctx.body =
+      globalVisibility || abodeAdmin
+        ? users
+        : users.map((user) =>
+            user.uid === ctx.user!.uid ? user : hideUserEmail(user),
+          );
   });
   router.get("/abodes/:aid/notes", async (ctx) => {
     ctx.body = await db.listNotesByAbodeId(ctx.params.aid);
@@ -135,7 +227,7 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
     jsonBody({ validate: createnote, includeParams: ["aid"] }),
     async (ctx) => {
       ctx.body = await db.createNote(ctx.request.body, { uid: ctx.user!.uid });
-    }
+    },
   );
 
   router.use("/residents", authenticate(db));
@@ -149,7 +241,7 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
       ctx.body = await db.createResident(ctx.request.body, {
         uid: ctx.user!.uid,
       });
-    }
+    },
   );
   router.get("/residents/:uid/:aid", async (ctx) => {
     ctx.body = await db.getResidentById(ctx.params.uid, ctx.params.aid);
@@ -161,7 +253,7 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
       ctx.body = await db.updateResident(ctx.request.body, {
         uid: ctx.user!.uid,
       });
-    }
+    },
   );
   router.delete("/residents/:uid/:aid", async (ctx) => {
     await db.deleteResidentById(ctx.params.uid, ctx.params.aid);
@@ -186,10 +278,10 @@ export function apirouter(db: BackendDbInterface): KoaRouter {
   });
   router.patch(
     "/notes/:nid",
-    jsonBody({ includeParams: ["nid"] }),
+    jsonBody({ validate: updatenote, includeParams: ["nid"] }),
     async (ctx) => {
       ctx.body = await db.updateNote(ctx.request.body, { uid: ctx.user!.uid });
-    }
+    },
   );
   router.delete("/notes/:nid", async (ctx) => {
     await db.deleteNoteById(ctx.params.nid);

src/webapi/exportScope.ts

@@ -0,0 +1,64 @@
+import type { Context } from "koa";
+import type { BackendDbInterface } from "../db/types/DbInterface.js";
+import type { ClientUser } from "../db/types/User.js";
+import type { ExportFilter } from "../db/types/ExportImport.js";
+
+/**
+ * Compute the export scope that must be *forced* on a caller, independent of
+ * anything they requested. Returns `null` when the caller is unrestricted (a
+ * global admin whose credential imposes no narrowing) — their own filter, if
+ * any, is then honored verbatim as a voluntary narrowing.
+ *
+ * Otherwise returns `{ abodes, users, apikeys }`: the abodes the caller resides
+ * in, the users needed to keep that data referentially whole (the caller plus
+ * every co-resident of those abodes), and — scoped tighter than `users` —
+ * apikeys limited to the caller alone, so a non-admin never exports another
+ * user's apikey metadata even though that user's record is included. This is
+ * the maximum a non-admin may export; the route intersects it with any
+ * caller-supplied filter (never a union).
+ */
+export async function computeForcedExportFilter(
+  db: BackendDbInterface,
+  ctx: { user: ClientUser; session: NonNullable<Context["session"]> },
+): Promise<ExportFilter | null> {
+  const { user, session } = ctx;
+
+  if (user.flags.admin) {
+    if (session.source !== "apikey") return null;
+    const p = session.key.permissions;
+    const unrestricted =
+      !!p.admin &&
+      !!p.all &&
+      !p.restrict_users?.length &&
+      !p.restrict_abodes?.length;
+    if (unrestricted) return null;
+  }
+
+  const residencies = await db.listResidentsByUserId(user.uid);
+  const abodeSet = new Set(residencies.map((r) => r.aid));
+  const userSet = new Set<string>([user.uid]);
+  for (const aid of abodeSet) {
+    for (const u of await db.listUsersByAbodeId(aid)) userSet.add(u.uid);
+  }
+
+  let abodes = [...abodeSet];
+  let users = [...userSet];
+  // apikeys are self-only for non-admins, regardless of co-residency.
+  let apikeys = [user.uid];
+
+  // An apikey can only narrow what its owning user could otherwise export.
+  if (session.source === "apikey") {
+    const p = session.key.permissions;
+    if (p.restrict_abodes?.length) {
+      const allow = new Set(p.restrict_abodes);
+      abodes = abodes.filter((a) => allow.has(a));
+    }
+    if (p.restrict_users?.length) {
+      const allow = new Set(p.restrict_users);
+      users = users.filter((u) => allow.has(u));
+      apikeys = apikeys.filter((u) => allow.has(u));
+    }
+  }
+
+  return { abodes, users, apikeys };
+}

src/webapi/schemarouter.ts

@@ -16,7 +16,7 @@ export function schemarouter(): KoaRouter {
             url: `${ctx.URL}/${name}.schema.json`,
           },
         ];
-      })
+      }),
     );
   });
 

src/webapi/userVisibility.ts

@@ -0,0 +1,36 @@
+import type { Context } from "koa";
+import type { ClientUser, PartialUser } from "../db/types/User.js";
+
+type AuthContext = {
+  user: ClientUser;
+  session: NonNullable<Context["session"]>;
+};
+
+export function hasGlobalUserVisibility(ctx: AuthContext): boolean {
+  if (!ctx.user.flags.admin) return false;
+  if (ctx.session.source !== "apikey") return true;
+
+  const permissions = ctx.session.key.permissions;
+  return (
+    !!permissions.admin &&
+    !!permissions.all &&
+    !permissions.restrict_users?.length &&
+    !permissions.restrict_abodes?.length
+  );
+}
+
+export function hideUserEmail(user: PartialUser | ClientUser): PartialUser {
+  if (!("email" in user)) return user;
+  const { email: _email, ...partial } = user;
+  return partial;
+}
+
+export function userForCaller(
+  user: PartialUser | ClientUser,
+  ctx: AuthContext,
+): PartialUser | ClientUser {
+  if (user.uid === ctx.user.uid || hasGlobalUserVisibility(ctx)) {
+    return user;
+  }
+  return hideUserEmail(user);
+}

test/backends/api/api-interface.test.ts

@@ -0,0 +1,219 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import { createServer } from "node:http";
+import type { AddressInfo } from "node:net";
+import { ApiInterface } from "../../../src/db/api/ApiInterface.js";
+import {
+  apiProtocols,
+  isApiUrl,
+  parseApiUrl,
+} from "../../../src/db/api/url.js";
+import {
+  NotFoundAbodeError,
+  NotAuthorizedAbodeError,
+  ReadonlyAbodeError,
+  InvalidAbodeError,
+  ConflictAbodeError,
+} from "../../../src/db/types/errors.js";
+
+describe("ApiInterface static properties", () => {
+  it("name is 'api'", () => {
+    const api = new ApiInterface("http://localhost:9999");
+    assert.equal(api.name, "api");
+  });
+
+  it("backend is false", () => {
+    const api = new ApiInterface("http://localhost:9999");
+    assert.equal(api.backend, false);
+  });
+
+  it("readonly defaults to false", () => {
+    const api = new ApiInterface("http://localhost:9999");
+    assert.equal(api.readonly, false);
+  });
+
+  it("readonly is set from options", () => {
+    const api = new ApiInterface("http://localhost:9999", { readonly: true });
+    assert.equal(api.readonly, true);
+  });
+});
+
+describe("apiProtocols and isApiUrl", () => {
+  it("apiProtocols includes expected protocols", () => {
+    assert.ok(apiProtocols.includes("https:"));
+    assert.ok(apiProtocols.includes("http:"));
+    assert.ok(apiProtocols.includes("abode+https:"));
+    assert.ok(apiProtocols.includes("abode+http:"));
+  });
+
+  it("isApiUrl returns true for http/https urls", () => {
+    assert.equal(isApiUrl("http://example.com"), true);
+    assert.equal(isApiUrl("https://example.com/api"), true);
+    assert.equal(isApiUrl("abode+http://example.com"), true);
+    assert.equal(isApiUrl("abode+https://example.com"), true);
+  });
+
+  it("isApiUrl returns false for non-http urls", () => {
+    assert.equal(isApiUrl("sqlite:///db.sqlite"), false);
+    assert.equal(isApiUrl("not-a-url"), false);
+    assert.equal(isApiUrl("ftp://example.com"), false);
+  });
+});
+
+describe("parseApiUrl", () => {
+  it("strips abode+ prefix from protocol", () => {
+    const [root] = parseApiUrl("abode+http://example.com");
+    assert.ok(root.startsWith("http://"), `expected http:// got ${root}`);
+  });
+
+  it("extracts Basic auth from URL credentials", () => {
+    const [, { headers }] = parseApiUrl("http://user:pass@example.com");
+    assert.ok(headers["Authorization"]?.startsWith("Basic "), "has Basic auth");
+    const decoded = atob(headers["Authorization"]!.slice("Basic ".length));
+    assert.equal(decoded, "user:pass");
+  });
+
+  it("strips credentials from root URL", () => {
+    const [root] = parseApiUrl("http://user:pass@example.com");
+    assert.ok(!root.includes("user"), "credentials stripped from root");
+  });
+
+  it("extracts readonly flag from query", () => {
+    const [, { readonly }] = parseApiUrl("http://example.com?readonly=1");
+    assert.equal(readonly, true);
+  });
+
+  it("defaults readonly to false", () => {
+    const [, { readonly }] = parseApiUrl("http://example.com");
+    assert.equal(readonly, false);
+  });
+
+  it("extra query params become headers", () => {
+    const [, { headers }] = parseApiUrl(
+      "http://example.com?X-Custom-Header=value",
+    );
+    assert.equal(headers["X-Custom-Header"], "value");
+  });
+
+  it("throws for non-api protocol", () => {
+    assert.throws(
+      () => parseApiUrl("sqlite:///db.sqlite"),
+      /Not an \{abode\+,\}http\{s,\}: protocol/,
+    );
+  });
+});
+
+describe("ApiInterface HTTP error mapping", () => {
+  let serverUrl: string;
+  let closeServer: () => Promise<void>;
+  let respondWith: (status: number) => void;
+
+  before(async () => {
+    let nextStatus = 500;
+    respondWith = (s) => {
+      nextStatus = s;
+    };
+
+    const server = createServer((req, res) => {
+      res.writeHead(nextStatus, { "Content-Type": "application/json" });
+      res.end(JSON.stringify({ ok: false, error: "test" }));
+    });
+    await new Promise<void>((resolve) =>
+      server.listen(0, "127.0.0.1", resolve),
+    );
+    const { port } = server.address() as AddressInfo;
+    serverUrl = `http://127.0.0.1:${port}`;
+    closeServer = () =>
+      new Promise<void>((resolve, reject) =>
+        server.close((err) => (err ? reject(err) : resolve())),
+      );
+  });
+
+  after(() => closeServer());
+
+  it("404 response throws NotFoundAbodeError", async () => {
+    respondWith(404);
+    const api = new ApiInterface(serverUrl);
+    await assert.rejects(
+      () => api.listUsers(),
+      (err) => {
+        assert.ok(err instanceof NotFoundAbodeError);
+        return true;
+      },
+    );
+  });
+
+  it("401 response throws NotAuthorizedAbodeError", async () => {
+    respondWith(401);
+    const api = new ApiInterface(serverUrl);
+    await assert.rejects(
+      () => api.listUsers(),
+      (err) => {
+        assert.ok(err instanceof NotAuthorizedAbodeError);
+        return true;
+      },
+    );
+  });
+
+  it("403 response throws ReadonlyAbodeError", async () => {
+    respondWith(403);
+    const api = new ApiInterface(serverUrl);
+    await assert.rejects(
+      () => api.listUsers(),
+      (err) => {
+        assert.ok(err instanceof ReadonlyAbodeError);
+        return true;
+      },
+    );
+  });
+
+  it("400 response throws InvalidAbodeError", async () => {
+    respondWith(400);
+    const api = new ApiInterface(serverUrl);
+    await assert.rejects(
+      () => api.listUsers(),
+      (err) => {
+        assert.ok(err instanceof InvalidAbodeError);
+        return true;
+      },
+    );
+  });
+
+  it("409 response throws ConflictAbodeError", async () => {
+    respondWith(409);
+    const api = new ApiInterface(serverUrl);
+    await assert.rejects(
+      () => api.listUsers(),
+      (err) => {
+        assert.ok(err instanceof ConflictAbodeError);
+        return true;
+      },
+    );
+  });
+});
+
+describe("ApiInterface._ internal helpers", () => {
+  it("_.url builds correct URL for path params (no leftover query param)", () => {
+    const api = new ApiInterface("http://example.com");
+    const url = api._.url("/users/:uid", { uid: "abc-123" });
+    assert.equal(url, "http://example.com/users/abc-123");
+  });
+
+  it("_.url puts remaining params as query string", () => {
+    const api = new ApiInterface("http://example.com");
+    const url = api._.url("/users/by-email", { email: "a@b.com" });
+    assert.ok(url.includes("email="), `expected query param in ${url}`);
+  });
+
+  it("_.root matches the constructor argument", () => {
+    const api = new ApiInterface("http://example.com/api");
+    assert.equal(api._.root, "http://example.com/api");
+  });
+
+  it("_.headers includes Authorization when set", () => {
+    const api = new ApiInterface("http://example.com", {
+      headers: { Authorization: "Basic dGVzdA==" },
+    });
+    assert.equal(api._.headers["Authorization"], "Basic dGVzdA==");
+  });
+});

test/backends/api/auth-http.test.ts

@@ -0,0 +1,143 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import { createTestDb } from "../../helpers/sqlite.js";
+import { createTestServer, type TestServer } from "../../helpers/koa.js";
+import { hashPassword } from "../../../src/util/hash.js";
+import type { SqliteInterface } from "../../../src/db/sqlite/SqliteInterface.js";
+
+const EMAIL = "auth-http@test.example";
+const PASSWORD = "auth-http-password";
+
+function getCookie(res: Response, name: string): string | undefined {
+  const raw = res.headers.getSetCookie?.() ?? [];
+  for (const entry of raw) {
+    const [pair] = entry.split(";");
+    const [key, value] = pair.split("=");
+    if (key === name) return value;
+  }
+  return undefined;
+}
+
+describe("api backend: auth over HTTP", async () => {
+  let db: SqliteInterface;
+  let closeDb: () => void;
+  let server: TestServer;
+  let uid: string;
+
+  before(async () => {
+    ({ db, close: closeDb } = await createTestDb());
+    server = await createTestServer(db);
+    const pw = await hashPassword(PASSWORD);
+    const user = await db.createUser({
+      email: EMAIL,
+      name: "Auth HTTP User",
+      password: pw,
+      flags: {},
+    });
+    uid = user.uid;
+  });
+
+  after(async () => {
+    await server.close();
+    closeDb();
+  });
+
+  it("POST /auth/login sets a session cookie", async () => {
+    const res = await fetch(`${server.url}/auth/login`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ email: EMAIL, password: PASSWORD }),
+    });
+    assert.equal(res.status, 200);
+    const cookie = getCookie(res, "abode_session");
+    assert.ok(cookie, "session cookie set");
+  });
+
+  it("session cookie authenticates GET /auth/self", async () => {
+    const login = await fetch(`${server.url}/auth/login`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ email: EMAIL, password: PASSWORD }),
+    });
+    const cookie = getCookie(login, "abode_session");
+
+    const self = await fetch(`${server.url}/auth/self`, {
+      headers: { Cookie: `abode_session=${cookie}` },
+    });
+    assert.equal(self.status, 200);
+    const body = (await self.json()) as { uid: string };
+    assert.equal(body.uid, uid);
+  });
+
+  it("GET /auth/self without credentials returns 401", async () => {
+    const res = await fetch(`${server.url}/auth/self`);
+    assert.equal(res.status, 401);
+  });
+
+  it("POST /auth/logout clears the cookie and invalidates the session server-side", async () => {
+    const login = await fetch(`${server.url}/auth/login`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ email: EMAIL, password: PASSWORD }),
+    });
+    const cookie = getCookie(login, "abode_session");
+
+    const logout = await fetch(`${server.url}/auth/logout`, {
+      method: "POST",
+      headers: { Cookie: `abode_session=${cookie}` },
+    });
+    assert.equal(logout.status, 204);
+    assert.equal(getCookie(logout, "abode_session"), "");
+
+    const self = await fetch(`${server.url}/auth/self`, {
+      headers: { Cookie: `abode_session=${cookie}` },
+    });
+    assert.equal(
+      self.status,
+      401,
+      "session was invalidated server-side, not just the cookie cleared",
+    );
+  });
+
+  it("POST /auth/clear-sessions invalidates outstanding session cookies", async () => {
+    const login = await fetch(`${server.url}/auth/login`, {
+      method: "POST",
+      headers: { "Content-Type": "application/json" },
+      body: JSON.stringify({ email: EMAIL, password: PASSWORD }),
+    });
+    const cookie = getCookie(login, "abode_session");
+
+    const clear = await fetch(`${server.url}/auth/clear-sessions`, {
+      method: "POST",
+      headers: { Cookie: `abode_session=${cookie}` },
+    });
+    assert.equal(clear.status, 204);
+
+    const self = await fetch(`${server.url}/auth/self`, {
+      headers: { Cookie: `abode_session=${cookie}` },
+    });
+    assert.equal(self.status, 401);
+  });
+
+  it("Bearer apikey token authenticates protected routes", async () => {
+    const [, token] = await db.createApikey({
+      uid,
+      name: "HTTP Test Key",
+      permissions: { all: true },
+    });
+
+    const res = await fetch(`${server.url}/users`, {
+      headers: { Authorization: `Bearer ${token}` },
+    });
+    assert.equal(res.status, 200);
+  });
+
+  it("invalid Bearer apikey token returns 401 invalid_apikey", async () => {
+    const res = await fetch(`${server.url}/users`, {
+      headers: { Authorization: `Bearer at_${"0".repeat(32)}` },
+    });
+    assert.equal(res.status, 401);
+    const body = (await res.json()) as { error: string };
+    assert.equal(body.error, "invalid_apikey");
+  });
+});

test/backends/api/index.test.ts

@@ -0,0 +1,54 @@
+import { createTestDb } from "../../helpers/sqlite.js";
+import { createTestServer } from "../../helpers/koa.js";
+import { ApiInterface } from "../../../src/db/api/ApiInterface.js";
+import { hashPassword } from "../../../src/util/hash.js";
+import { runUserTests } from "../../shared/users.js";
+import { runAbodeTests } from "../../shared/abodes.js";
+import { runResidentTests } from "../../shared/residents.js";
+import { runApikeyTests } from "../../shared/apikeys.js";
+
+const AUTH_EMAIL = "api-auth@test.example";
+const AUTH_PASSWORD = "api-auth-password";
+
+async function getApiDb() {
+  const { db: sqliteDb, close: closeSqlite } = await createTestDb();
+  const pw = await hashPassword(AUTH_PASSWORD);
+  await sqliteDb.createUser({
+    email: AUTH_EMAIL,
+    name: "API Auth User",
+    password: pw,
+    // The shared backend contract suite exercises unrestricted user lookup,
+    // which the HTTP API now reserves for global administrators.
+    flags: { admin: true },
+  });
+  const server = await createTestServer(sqliteDb);
+  const authHeader = "Basic " + btoa(`${AUTH_EMAIL}:${AUTH_PASSWORD}`);
+  const api = new ApiInterface(server.url, {
+    headers: { Authorization: authHeader },
+  });
+  return {
+    db: api,
+    close: async () => {
+      await server.close();
+      closeSqlite();
+    },
+  };
+}
+
+async function getReadonlyApiDb() {
+  const { db: sqliteDb, close: closeSqlite } = await createTestDb();
+  const server = await createTestServer(sqliteDb);
+  const api = new ApiInterface(server.url, { readonly: true });
+  return {
+    db: api,
+    close: async () => {
+      await server.close();
+      closeSqlite();
+    },
+  };
+}
+
+runUserTests("api", getApiDb, getReadonlyApiDb);
+runAbodeTests("api", getApiDb);
+runResidentTests("api", getApiDb);
+runApikeyTests("api", getApiDb);

test/backends/postgres/export-import.test.ts

@@ -0,0 +1,328 @@
+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+import { Readable } from "node:stream";
+import { PostgresInterface } from "../../../src/db/postgres/PostgresInterface.js";
+import type { WrappedPgClient } from "../../../src/db/postgres/pool.js";
+import type { SqlCode } from "../../../src/db/postgres/sql.js";
+import {
+  EXPORT_KIND_ORDER,
+  type ExportKind,
+} from "../../../src/db/types/ExportImport.js";
+
+// The postgres backend has no CI database, so these tests drive the real
+// PostgresInterface.export/import code paths against an in-memory fake client.
+// They verify control flow (NDJSON shape, meta.source, filtering, note
+// skipping, counts, insert dispatch, abort -> rollback); the SQL-arg forms are
+// the same {uuid}/{text}/{jsonb}/{date} patterns the pg backend's own CRUD
+// already exercises against real Postgres.
+
+interface Rows {
+  users?: Record<string, unknown>[];
+  abodes?: Record<string, unknown>[];
+  residents?: Record<string, unknown>[];
+  apikeys?: Record<string, unknown>[];
+  notes?: Record<string, unknown>[];
+}
+
+class FakePg implements WrappedPgClient {
+  readonly = false;
+  inserts: { table: string; vars: unknown[] }[] = [];
+  committed = false;
+  rolledBack = false;
+  #rows: Rows;
+
+  constructor(rows: Rows = {}) {
+    this.#rows = rows;
+  }
+
+  async destroy(): Promise<void> {}
+
+  async all<R>(stmt: SqlCode): Promise<R[]> {
+    const s = stmt._sql;
+    if (s.includes('FROM "users"')) return (this.#rows.users ?? []) as R[];
+    if (s.includes('FROM "abodes"')) return (this.#rows.abodes ?? []) as R[];
+    if (s.includes('FROM "residents"'))
+      return (this.#rows.residents ?? []) as R[];
+    if (s.includes('FROM "apikeys"')) return (this.#rows.apikeys ?? []) as R[];
+    if (s.includes('FROM "notes"')) return (this.#rows.notes ?? []) as R[];
+    return [] as R[];
+  }
+
+  async get<R>(stmt: SqlCode): Promise<R | null> {
+    const rows = await this.all<R>(stmt);
+    return rows[0] ?? null;
+  }
+
+  async run(stmt: SqlCode): Promise<{ changes: number }> {
+    const table = stmt._sql.match(/INSERT INTO "(\w+)"/)?.[1] ?? "?";
+    this.inserts.push({ table, vars: stmt._vars });
+    return { changes: 1 };
+  }
+
+  async multi<R>(fn: (tx: WrappedPgClient) => Promise<R>): Promise<R> {
+    try {
+      const r = await fn(this);
+      this.committed = true;
+      return r;
+    } catch (e) {
+      this.rolledBack = true;
+      throw e;
+    }
+  }
+
+  async rethrow<R>(fn: () => Promise<R>): Promise<R> {
+    return fn();
+  }
+}
+
+const iso = "2026-01-02T03:04:05.000Z";
+
+function seededRows(): Rows {
+  return {
+    users: [
+      {
+        uid: "11111111-1111-1111-1111-111111111111",
+        email: "u1@test.example",
+        name: "User One",
+        flags: {},
+        created_at: new Date(iso),
+        updated_at: new Date(iso),
+      },
+    ],
+    abodes: [
+      {
+        aid: "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1",
+        name: "Abode One",
+        created_at: new Date(iso),
+        created_by: "11111111-1111-1111-1111-111111111111",
+        updated_at: new Date(iso),
+        updated_by: null,
+      },
+      {
+        aid: "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa2",
+        name: "Abode Two",
+        created_at: new Date(iso),
+        created_by: null,
+        updated_at: new Date(iso),
+        updated_by: null,
+      },
+    ],
+    residents: [
+      {
+        uid: "11111111-1111-1111-1111-111111111111",
+        aid: "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1",
+        flags: {},
+        created_at: new Date(iso),
+        created_by: null,
+        updated_at: new Date(iso),
+        updated_by: null,
+      },
+    ],
+    apikeys: [
+      {
+        uid: "11111111-1111-1111-1111-111111111111",
+        kid: "kkkkkkkk-kkkk-kkkk-kkkk-kkkkkkkkkkk1",
+        name: "key one",
+        permissions: {},
+        created_at: new Date(iso),
+        expires_at: null,
+      },
+    ],
+    notes: [
+      {
+        nid: "nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnn1",
+        aid: "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1",
+        name: "Note one",
+        content: "# Content",
+        properties: { type: "note" },
+        created_at: new Date(iso),
+        created_by: "11111111-1111-1111-1111-111111111111",
+        updated_at: new Date(iso),
+        updated_by: null,
+      },
+    ],
+  };
+}
+
+async function streamToString(s: NodeJS.ReadableStream): Promise<string> {
+  let out = "";
+  for await (const chunk of s) out += chunk;
+  return out;
+}
+function parseLines(ndjson: string): { kind: string; data: any }[] {
+  return ndjson
+    .split("\n")
+    .filter(Boolean)
+    .map((l) => JSON.parse(l));
+}
+function line(kind: string, data: unknown): string {
+  return JSON.stringify({ kind, data }) + "\n";
+}
+
+describe("postgres export", () => {
+  it("streams meta and all supported kinds, including notes", async () => {
+    const db = new PostgresInterface(new FakePg(seededRows()));
+    const lines = parseLines(await streamToString(db.export()));
+
+    const meta = lines.find((l) => l.kind === "meta");
+    assert.ok(meta);
+    assert.equal(meta!.data.source, "postgres");
+    assert.equal(meta!.data.v, 1);
+
+    const kinds = new Set(lines.map((l) => l.kind));
+    assert.ok(kinds.has("user"));
+    assert.ok(kinds.has("abode"));
+    assert.ok(kinds.has("resident"));
+    assert.ok(kinds.has("apikey"));
+    assert.ok(kinds.has("note"));
+  });
+
+  it("emits record kinds grouped in FK-safe EXPORT_KIND_ORDER", async () => {
+    const db = new PostgresInterface(new FakePg(seededRows()));
+    const lines = parseLines(await streamToString(db.export()));
+    assert.equal(lines[0]?.kind, "meta", "first line is meta");
+    const rank = (k: string) => EXPORT_KIND_ORDER.indexOf(k as ExportKind);
+    let last = -1;
+    for (const { kind } of lines.slice(1)) {
+      const r = rank(kind);
+      assert.notEqual(r, -1, `unexpected kind ${kind}`);
+      assert.ok(r >= last, `kind ${kind} out of FK-safe order`);
+      last = r;
+    }
+  });
+
+  it("applies the kinds filter", async () => {
+    const db = new PostgresInterface(new FakePg(seededRows()));
+    const lines = parseLines(
+      await streamToString(db.export({ filter: { kinds: ["abode"] } })),
+    );
+    const kinds = new Set(
+      lines.filter((l) => l.kind !== "meta").map((l) => l.kind),
+    );
+    assert.deepEqual(kinds, new Set(["abode"]));
+  });
+
+  it("applies the abodes allowlist to abode/resident records", async () => {
+    const db = new PostgresInterface(new FakePg(seededRows()));
+    const lines = parseLines(
+      await streamToString(
+        db.export({
+          filter: { abodes: ["aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1"] },
+        }),
+      ),
+    );
+    const abodeAids = lines
+      .filter((l) => l.kind === "abode")
+      .map((l) => l.data.aid);
+    assert.deepEqual(abodeAids, ["aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1"]);
+  });
+});
+
+describe("postgres import", () => {
+  it("dispatches inserts per kind, including note, and commits", async () => {
+    const fake = new FakePg();
+    const db = new PostgresInterface(fake);
+    const source = Readable.from([
+      line("meta", { v: 1 }),
+      line("user", {
+        uid: "11111111-1111-1111-1111-111111111111",
+        email: "u1@test.example",
+        name: "User One",
+        flags: {},
+        created_at: iso,
+        updated_at: iso,
+      }),
+      line("abode", {
+        aid: "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1",
+        name: "Abode One",
+        created_at: iso,
+        created_by: "11111111-1111-1111-1111-111111111111",
+        updated_at: iso,
+        updated_by: null,
+      }),
+      line("apikey", {
+        uid: "11111111-1111-1111-1111-111111111111",
+        kid: "kkkkkkkk-kkkk-kkkk-kkkk-kkkkkkkkkkk1",
+        name: "key one",
+        permissions: {},
+        created_at: iso,
+        expires_at: null,
+      }),
+      line("note", {
+        nid: "nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnn1",
+        aid: "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1",
+        name: "Note",
+        content: "x",
+        properties: {},
+        created_at: iso,
+        created_by: null,
+        updated_at: iso,
+        updated_by: null,
+      }),
+    ]);
+
+    const result = await db.import(source);
+    assert.deepEqual(result.counts, { user: 1, abode: 1, apikey: 1, note: 1 });
+    assert.ok(fake.committed);
+    assert.deepEqual(fake.inserts.map((i) => i.table).sort(), [
+      "abodes",
+      "apikeys",
+      "notes",
+      "users",
+    ]);
+    // apikey gets a freshly-minted token (never exported)
+    const apikeyInsert = fake.inserts.find((i) => i.table === "apikeys")!;
+    assert.ok(
+      apikeyInsert.vars.some(
+        (v) => typeof v === "string" && v.startsWith("at_"),
+      ),
+      "apikey insert carries a fresh token",
+    );
+  });
+
+  it("rejects and rolls back when the stream carries an error sentinel", async () => {
+    const fake = new FakePg();
+    const db = new PostgresInterface(fake);
+    const source = Readable.from([
+      line("meta", { v: 1 }),
+      line("user", {
+        uid: "11111111-1111-1111-1111-111111111111",
+        email: "u1@test.example",
+        name: "User One",
+        flags: {},
+        created_at: iso,
+        updated_at: iso,
+      }),
+      line("error", { message: "boom" }),
+    ]);
+
+    await assert.rejects(() => db.import(source), /boom/);
+    assert.ok(fake.rolledBack);
+    assert.ok(!fake.committed);
+  });
+
+  it("rejects and rolls back on signal abort", async () => {
+    const fake = new FakePg();
+    const db = new PostgresInterface(fake);
+    const ac = new AbortController();
+    const source = Readable.from(
+      (async function* () {
+        yield line("meta", { v: 1 });
+        yield line("user", {
+          uid: "11111111-1111-1111-1111-111111111111",
+          email: "u1@test.example",
+          name: "User One",
+          flags: {},
+          created_at: iso,
+          updated_at: iso,
+        });
+        ac.abort();
+        await new Promise((r) => setTimeout(r, 1000));
+      })(),
+    );
+
+    await assert.rejects(() => db.import(source, { signal: ac.signal }));
+    assert.ok(fake.rolledBack);
+    assert.ok(!fake.committed);
+  });
+});

test/backends/sqlite/index.test.ts

@@ -0,0 +1,38 @@
+import type { BackendDbInterface } from "../../../src/db/types/DbInterface.js";
+import { SqliteInterface } from "../../../src/db/sqlite/SqliteInterface.js";
+import { createTestDb, createReadonlyTestDb } from "../../helpers/sqlite.js";
+import { runUserTests } from "../../shared/users.js";
+import { runAbodeTests } from "../../shared/abodes.js";
+import { runResidentTests } from "../../shared/residents.js";
+import { runApikeyTests } from "../../shared/apikeys.js";
+import { runSessionTests } from "../../shared/sessions.js";
+import { runAuthTests } from "../../shared/auth.js";
+
+async function createExpiredApikey(
+  db: BackendDbInterface,
+  uid: string,
+): Promise<`at_${string}`> {
+  const si = db as SqliteInterface;
+  const token = `at_${"e".repeat(32)}` as `at_${string}`;
+  const kid = crypto.randomUUID();
+  const { sql } = si._;
+  si._.db.run(sql`
+    INSERT INTO "apikeys"("uid", "kid", "token", "name", "permissions", "expires_at")
+    VALUES(
+      ${{ uuid: uid }},
+      ${{ uuid: kid }},
+      ${{ text: token }},
+      ${{ text: "Expired Key" }},
+      ${{ jsonb: {} }},
+      ${{ date: new Date(Date.now() - 10000).toISOString() }}
+    )
+  `);
+  return token;
+}
+
+runUserTests("sqlite", createTestDb, createReadonlyTestDb);
+runAbodeTests("sqlite", createTestDb);
+runResidentTests("sqlite", createTestDb);
+runApikeyTests("sqlite", createTestDb);
+runSessionTests("sqlite", createTestDb);
+runAuthTests("sqlite", createTestDb, createExpiredApikey);

test/backends/sqlite/migrator.test.ts

@@ -0,0 +1,85 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import { WrappedNodeSqliteDb } from "../../../src/db/sqlite/impl/node-sqlite.js";
+import { SqliteMigrator } from "../../../src/db/sqlite/SqliteMigrator.js";
+import { migrations } from "../../../src/db/sqlite/migrations/index.js";
+
+describe("SqliteMigrator", () => {
+  it("listAvailableMigrations returns all known migrations", () => {
+    const db = new WrappedNodeSqliteDb(":memory:");
+    const migrator = new SqliteMigrator(db);
+    const available = migrator.listAvailableMigrations();
+    assert.ok(Array.isArray(available));
+    assert.ok(available.length >= 3, "at least 3 migrations");
+    const ids = available.map((m) => m.id);
+    assert.ok(ids.includes(1), "migration 1 present");
+    assert.ok(ids.includes(2), "migration 2 present");
+    assert.ok(ids.includes(3), "migration 3 present");
+    db.destroy();
+  });
+
+  it("listAppliedMigrations returns empty array on fresh db", async () => {
+    const db = new WrappedNodeSqliteDb(":memory:");
+    const migrator = new SqliteMigrator(db);
+    const applied = await migrator.listAppliedMigrations();
+    assert.deepEqual(applied, []);
+    db.destroy();
+  });
+
+  it("migrateTo(1) applies first migration", async () => {
+    const db = new WrappedNodeSqliteDb(":memory:");
+    const migrator = new SqliteMigrator(db);
+    await migrator.migrateTo(1);
+    const applied = await migrator.listAppliedMigrations();
+    assert.equal(applied.length, 1);
+    assert.equal(applied[0].id, 1);
+    assert.ok(applied[0].name, "migration has a name");
+    assert.ok(applied[0].applied_at, "migration has applied_at");
+    db.destroy();
+  });
+
+  it("migrateTo(3) applies all three migrations in order", async () => {
+    const db = new WrappedNodeSqliteDb(":memory:");
+    const migrator = new SqliteMigrator(db);
+    await migrator.migrateTo(3);
+    const applied = await migrator.listAppliedMigrations();
+    assert.equal(applied.length, 3);
+    assert.deepEqual(
+      applied.map((m) => m.id),
+      [1, 2, 3],
+    );
+    db.destroy();
+  });
+
+  it("migrateTo(3) twice is idempotent (nothing to do)", async () => {
+    const db = new WrappedNodeSqliteDb(":memory:");
+    const migrator = new SqliteMigrator(db);
+    await migrator.migrateTo(3);
+    await migrator.migrateTo(3);
+    const applied = await migrator.listAppliedMigrations();
+    assert.equal(applied.length, 3);
+    db.destroy();
+  });
+
+  it("migrateTo with unknown id throws", async () => {
+    const db = new WrappedNodeSqliteDb(":memory:");
+    const migrator = new SqliteMigrator(db);
+    await assert.rejects(
+      () => migrator.migrateTo(9999),
+      /No known migration with id 9999/,
+    );
+    db.destroy();
+  });
+
+  it("listAvailableMigrations names match migration objects", () => {
+    const db = new WrappedNodeSqliteDb(":memory:");
+    const migrator = new SqliteMigrator(db);
+    const available = migrator.listAvailableMigrations();
+    for (const { id, name } of available) {
+      const migration = migrations.find((m) => m.id === id);
+      assert.ok(migration, `migration ${id} exists`);
+      assert.equal(migration.name, name);
+    }
+    db.destroy();
+  });
+});

test/backends/sqlite/sql.test.ts

@@ -0,0 +1,140 @@
+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+import {
+  sql,
+  catSql,
+  joinSql,
+  calcUpdates,
+  unsafeSql,
+} from "../../../src/db/sqlite/sql.js";
+
+describe("sql template tag", () => {
+  it("produces correct sql and empty vars for plain text", () => {
+    const result = sql`SELECT 1`;
+    assert.equal(result._sql, "SELECT 1");
+    assert.deepEqual(result._vars, []);
+  });
+
+  it("binds text args with ?", () => {
+    const result = sql`WHERE name = ${{ text: "alice" }}`;
+    assert.equal(result._sql, "WHERE name = ?");
+    assert.deepEqual(result._vars, ["alice"]);
+  });
+
+  it("binds uuid args with ? and converts to Buffer", () => {
+    const uuid = "12345678-1234-1234-1234-123456789abc";
+    const result = sql`WHERE uid = ${{ uuid }}`;
+    assert.equal(result._sql, "WHERE uid = ?");
+    assert.equal(result._vars.length, 1);
+    assert.ok(result._vars[0] instanceof Buffer, "uuid is stored as Buffer");
+  });
+
+  it("binds jsonb args with jsonb(?) wrapper", () => {
+    const result = sql`SET flags = ${{ jsonb: { admin: true } }}`;
+    assert.equal(result._sql, "SET flags = jsonb(?)");
+    assert.deepEqual(result._vars, [JSON.stringify({ admin: true })]);
+  });
+
+  it("binds date args with datetime(?, ...) wrapper", () => {
+    const date = "2024-01-01T00:00:00.000Z";
+    const result = sql`SET ts = ${{ date }}`;
+    assert.ok(result._sql.startsWith("SET ts = datetime("), result._sql);
+    assert.equal(result._vars.length, 1);
+  });
+
+  it("binds int args with ?", () => {
+    const result = sql`LIMIT ${{ int: 10 }}`;
+    assert.equal(result._sql, "LIMIT ?");
+    assert.deepEqual(result._vars, [10]);
+  });
+
+  it("throws for non-integer int value", () => {
+    assert.throws(() => sql`LIMIT ${{ int: 10.5 }}`, /Not an integer/);
+  });
+
+  it("emits NULL for null args", () => {
+    const result = sql`= ${{ null: true }}`;
+    assert.equal(result._sql, "= NULL");
+    assert.deepEqual(result._vars, []);
+  });
+
+  it("splices nested SqlCode", () => {
+    const inner = sql`AND x = ${{ text: "foo" }}`;
+    const outer = sql`WHERE 1=1 ${inner}`;
+    assert.equal(outer._sql, "WHERE 1=1 AND x = ?");
+    assert.deepEqual(outer._vars, ["foo"]);
+  });
+
+  it("handles multiple args", () => {
+    const result = sql`INSERT INTO t(a,b) VALUES(${{ text: "x" }}, ${{ int: 42 }})`;
+    assert.equal(result._sql, "INSERT INTO t(a,b) VALUES(?, ?)");
+    assert.deepEqual(result._vars, ["x", 42]);
+  });
+});
+
+describe("catSql", () => {
+  it("concatenates sql and vars", () => {
+    const a = sql`SELECT * FROM t`;
+    const b = sql` WHERE x = ${{ text: "y" }}`;
+    const result = catSql(a, b);
+    assert.equal(result._sql, "SELECT * FROM t WHERE x = ?");
+    assert.deepEqual(result._vars, ["y"]);
+  });
+});
+
+describe("joinSql", () => {
+  it("joins multiple parts with separator", () => {
+    const parts = [
+      sql`a = ${{ text: "1" }}`,
+      sql`b = ${{ text: "2" }}`,
+      sql`c = ${{ text: "3" }}`,
+    ];
+    const result = joinSql(parts, sql`, `);
+    assert.equal(result._sql, "a = ?, b = ?, c = ?");
+    assert.deepEqual(result._vars, ["1", "2", "3"]);
+  });
+
+  it("returns single part unchanged (no separator)", () => {
+    const result = joinSql([sql`x = ${{ int: 1 }}`], sql`, `);
+    assert.equal(result._sql, "x = ?");
+    assert.deepEqual(result._vars, [1]);
+  });
+});
+
+describe("calcUpdates", () => {
+  it("returns only keys present in the object", () => {
+    const calc = calcUpdates({
+      name: (v: string) => sql`name = ${{ text: v }}`,
+      email: (v: string) => sql`email = ${{ text: v }}`,
+    });
+    const updates = calc({ name: "alice" });
+    assert.equal(updates.length, 1);
+    assert.equal(updates[0]._sql, "name = ?");
+    assert.deepEqual(updates[0]._vars, ["alice"]);
+  });
+
+  it("returns all keys when all are present", () => {
+    const calc = calcUpdates({
+      a: (v: string) => sql`a = ${{ text: v }}`,
+      b: (v: string) => sql`b = ${{ text: v }}`,
+    });
+    const updates = calc({ a: "x", b: "y" });
+    assert.equal(updates.length, 2);
+  });
+
+  it("returns empty array when no keys match", () => {
+    const calc = calcUpdates({
+      name: (v: string) => sql`name = ${{ text: v }}`,
+    });
+    const updates = calc({});
+    assert.equal(updates.length, 0);
+  });
+});
+
+describe("unsafeSql", () => {
+  it("wraps a raw sql string with no vars", () => {
+    const result = unsafeSql("CREATE TABLE t (id INTEGER)");
+    assert.equal(result._sql, "CREATE TABLE t (id INTEGER)");
+    assert.deepEqual(result._vars, []);
+  });
+});

test/backends/sqlite/wrapped-db.test.ts

@@ -0,0 +1,123 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import { WrappedNodeSqliteDb } from "../../../src/db/sqlite/impl/node-sqlite.js";
+import { sql, unsafeSql } from "../../../src/db/sqlite/sql.js";
+import type { WrappedDb } from "../../../src/db/sqlite/impl/types.js";
+
+function runWrappedDbSuite(name: string, makeDb: () => WrappedDb) {
+  describe(`${name}: WrappedDb`, () => {
+    let db: WrappedDb;
+
+    before(() => {
+      db = makeDb();
+      db.run(
+        unsafeSql(
+          "CREATE TABLE IF NOT EXISTS test (id INTEGER PRIMARY KEY, val TEXT NOT NULL)",
+        ),
+      );
+    });
+
+    after(() => db.destroy());
+
+    it("run INSERT returns changes count", () => {
+      const { changes } = db.run(
+        sql`INSERT INTO test(val) VALUES(${{ text: "hello" }})`,
+      );
+      assert.equal(changes, 1);
+    });
+
+    it("all SELECT returns all rows", () => {
+      db.run(unsafeSql("DELETE FROM test"));
+      db.run(sql`INSERT INTO test(val) VALUES(${{ text: "a" }})`);
+      db.run(sql`INSERT INTO test(val) VALUES(${{ text: "b" }})`);
+      const rows = db.all<{ val: string }>(
+        unsafeSql("SELECT val FROM test ORDER BY val"),
+      );
+      assert.equal(rows.length, 2);
+      assert.equal(rows[0].val, "a");
+      assert.equal(rows[1].val, "b");
+    });
+
+    it("get returns single row or null", () => {
+      db.run(unsafeSql("DELETE FROM test"));
+      db.run(sql`INSERT INTO test(val) VALUES(${{ text: "one" }})`);
+      const row = db.get<{ val: string }>(unsafeSql("SELECT val FROM test"));
+      assert.ok(row !== null);
+      assert.equal(row.val, "one");
+
+      const none = db.get<{ val: string }>(
+        sql`SELECT val FROM test WHERE val = ${{ text: "none" }}`,
+      );
+      assert.equal(none, null);
+    });
+
+    it("get throws when multiple rows match", () => {
+      db.run(unsafeSql("DELETE FROM test"));
+      db.run(sql`INSERT INTO test(val) VALUES(${{ text: "dup1" }})`);
+      db.run(sql`INSERT INTO test(val) VALUES(${{ text: "dup2" }})`);
+      assert.throws(
+        () => db.get<{ val: string }>(unsafeSql("SELECT val FROM test")),
+        /Multiple results/,
+      );
+    });
+
+    it("multi commits on success", () => {
+      db.run(unsafeSql("DELETE FROM test"));
+      db.multi(() => {
+        db.run(sql`INSERT INTO test(val) VALUES(${{ text: "in-tx" }})`);
+      });
+      const rows = db.all<{ val: string }>(unsafeSql("SELECT val FROM test"));
+      assert.equal(rows.length, 1);
+      assert.equal(rows[0].val, "in-tx");
+    });
+
+    it("multi rolls back on error", () => {
+      db.run(unsafeSql("DELETE FROM test"));
+      assert.throws(() =>
+        db.multi(() => {
+          db.run(sql`INSERT INTO test(val) VALUES(${{ text: "rollback" }})`);
+          throw new Error("abort!");
+        }),
+      );
+      const rows = db.all<{ val: string }>(unsafeSql("SELECT val FROM test"));
+      assert.equal(rows.length, 0);
+    });
+
+    it("rethrow passes through return value", () => {
+      const result = db.rethrow(() => 42);
+      assert.equal(result, 42);
+    });
+
+    it("rethrow propagates non-SQLite errors unchanged", () => {
+      const err = new Error("custom error");
+      assert.throws(
+        () =>
+          db.rethrow(() => {
+            throw err;
+          }),
+        (e) => e === err,
+      );
+    });
+  });
+}
+
+runWrappedDbSuite("node-sqlite", () => new WrappedNodeSqliteDb(":memory:"));
+
+describe("better-sqlite3 WrappedDb", async () => {
+  let bs3Ctor: (new (path: string) => WrappedDb) | null = null;
+
+  try {
+    const mod = await import("../../../src/db/sqlite/impl/better-sqlite3.js");
+    bs3Ctor = mod.WrappedBetterSqlite3Db;
+  } catch {
+    // better-sqlite3 not available, skip
+  }
+
+  if (bs3Ctor) {
+    runWrappedDbSuite("better-sqlite3", () => new bs3Ctor!(":memory:"));
+  } else {
+    it("better-sqlite3 is not available - skipped", (t) => {
+      t.skip("better-sqlite3 optional dependency not found");
+    });
+  }
+});

test/helpers/koa.ts

@@ -0,0 +1,29 @@
+import Koa from "koa";
+import { createServer } from "node:http";
+import type { AddressInfo } from "node:net";
+import { apirouter } from "../../src/webapi/apirouter.js";
+import type { BackendDbInterface } from "../../src/db/types/DbInterface.js";
+
+export interface TestServer {
+  url: string;
+  close(): Promise<void>;
+}
+
+export async function createTestServer(
+  db: BackendDbInterface,
+): Promise<TestServer> {
+  const app = new Koa();
+  const router = apirouter(db);
+  app.use(router.routes());
+  app.use(router.allowedMethods());
+  const server = createServer(app.callback());
+  await new Promise<void>((resolve) => server.listen(0, "127.0.0.1", resolve));
+  const { port } = server.address() as AddressInfo;
+  return {
+    url: `http://127.0.0.1:${port}`,
+    close: () =>
+      new Promise<void>((resolve, reject) =>
+        server.close((err) => (err ? reject(err) : resolve())),
+      ),
+  };
+}

test/helpers/sqlite.ts

@@ -0,0 +1,24 @@
+import { getWrappedDb } from "../../src/db/sqlite/impl/index.js";
+import { SqliteMigrator } from "../../src/db/sqlite/SqliteMigrator.js";
+import { SqliteInterface } from "../../src/db/sqlite/SqliteInterface.js";
+import type { WrappedDb } from "../../src/db/sqlite/impl/types.js";
+
+export interface TestDb {
+  db: SqliteInterface;
+  wrapped: WrappedDb;
+  close(): void;
+}
+
+export async function createTestDb(): Promise<TestDb> {
+  const wrapped = getWrappedDb("node", ":memory:", {});
+  const migrator = new SqliteMigrator(wrapped);
+  await migrator.migrateTo(3);
+  const db = new SqliteInterface(wrapped);
+  return { db, wrapped, close: () => wrapped.destroy() };
+}
+
+export async function createReadonlyTestDb(): Promise<TestDb> {
+  const wrapped = getWrappedDb("node", ":memory:", { readonly: true });
+  const db = new SqliteInterface(wrapped);
+  return { db, wrapped, close: () => wrapped.destroy() };
+}

test/shared/abodes.ts

@@ -0,0 +1,124 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import type { DbInterface } from "../../src/db/types/DbInterface.js";
+import {
+  NotFoundAbodeError,
+  InvalidAbodeError,
+} from "../../src/db/types/errors.js";
+import { hashPassword } from "../../src/util/hash.js";
+
+export function runAbodeTests(
+  name: string,
+  getDb: () => Promise<{ db: DbInterface; close(): void }>,
+): void {
+  describe(`${name}: abodes`, async () => {
+    let db: DbInterface;
+    let close: () => void;
+    let ctxUid: string;
+
+    before(async () => {
+      ({ db, close } = await getDb());
+      const pw = await hashPassword("abode-ctx");
+      const user = await db.createUser({
+        email: `abode-ctx-${Date.now()}@test.example`,
+        name: "Abode Ctx User",
+        password: pw,
+        flags: {},
+      });
+      ctxUid = user.uid;
+    });
+
+    after(() => close());
+
+    it("createAbode returns an Abode with expected fields", async () => {
+      const abode = await db.createAbode(
+        { name: "Test Abode" },
+        { uid: ctxUid },
+      );
+      assert.ok(abode.aid, "has aid");
+      assert.equal(abode.name, "Test Abode");
+      assert.ok(abode.created_at);
+      assert.ok(abode.updated_at);
+    });
+
+    it("getAbodeById returns the created abode", async () => {
+      const created = await db.createAbode(
+        { name: "ById Abode" },
+        { uid: ctxUid },
+      );
+      const found = await db.getAbodeById(created.aid);
+      assert.equal(found.aid, created.aid);
+      assert.equal(found.name, "ById Abode");
+    });
+
+    it("getAbodeById throws NotFoundAbodeError for unknown aid", async () => {
+      await assert.rejects(
+        () => db.getAbodeById("00000000-0000-0000-0000-000000000000"),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("listAbodes includes the created abode", async () => {
+      const created = await db.createAbode(
+        { name: `Listed Abode ${Date.now()}` },
+        { uid: ctxUid },
+      );
+      const abodes = await db.listAbodes();
+      assert.ok(Array.isArray(abodes));
+      const found = abodes.find((a) => a.aid === created.aid);
+      assert.ok(found, "created abode appears in listAbodes");
+    });
+
+    it("updateAbode updates the name", async () => {
+      const created = await db.createAbode({ name: "Before" }, { uid: ctxUid });
+      const updated = await db.updateAbode(
+        { aid: created.aid, name: "After" },
+        { uid: ctxUid },
+      );
+      assert.equal(updated.aid, created.aid);
+      assert.equal(updated.name, "After");
+    });
+
+    it("updateAbode with no fields throws InvalidAbodeError", async () => {
+      const created = await db.createAbode(
+        { name: "No Update" },
+        { uid: ctxUid },
+      );
+      await assert.rejects(
+        () => db.updateAbode({ aid: created.aid }, { uid: ctxUid }),
+        (err) => {
+          assert.ok(err instanceof InvalidAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteAbodeById removes the abode", async () => {
+      const created = await db.createAbode(
+        { name: "To Delete" },
+        { uid: ctxUid },
+      );
+      await db.deleteAbodeById(created.aid);
+      await assert.rejects(
+        () => db.getAbodeById(created.aid),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteAbodeById throws NotFoundAbodeError for unknown aid", async () => {
+      await assert.rejects(
+        () => db.deleteAbodeById("00000000-0000-0000-0000-000000000000"),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+}

test/shared/apikeys.ts

@@ -0,0 +1,102 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import type { DbInterface } from "../../src/db/types/DbInterface.js";
+import { NotFoundAbodeError } from "../../src/db/types/errors.js";
+import { hashPassword } from "../../src/util/hash.js";
+
+export function runApikeyTests(
+  name: string,
+  getDb: () => Promise<{ db: DbInterface; close(): void }>,
+): void {
+  describe(`${name}: apikeys`, async () => {
+    let db: DbInterface;
+    let close: () => void;
+    let uid: string;
+
+    before(async () => {
+      ({ db, close } = await getDb());
+      const pw = await hashPassword("apikey-password");
+      const user = await db.createUser({
+        email: `apikey-user-${Date.now()}@test.example`,
+        name: "Apikey User",
+        password: pw,
+        flags: {},
+      });
+      uid = user.uid;
+    });
+
+    after(() => close());
+
+    it("createApikey returns [ClientApikey, at_token]", async () => {
+      const [apikey, token] = await db.createApikey({
+        uid,
+        name: "Test Key",
+        permissions: {},
+      });
+      assert.ok(apikey.kid, "has kid");
+      assert.equal(apikey.uid, uid);
+      assert.equal(apikey.name, "Test Key");
+      assert.ok(!("token" in apikey), "ClientApikey has no token field");
+      assert.ok(token.startsWith("at_"), `token starts with at_: ${token}`);
+    });
+
+    it("listApikeysByUser returns created key", async () => {
+      const [created] = await db.createApikey({
+        uid,
+        name: "List Key",
+        permissions: {},
+      });
+      const keys = await db.listApikeysByUser(uid);
+      assert.ok(Array.isArray(keys));
+      const found = keys.find((k) => k.kid === created.kid);
+      assert.ok(found, "created key appears in listApikeysByUser");
+    });
+
+    it("getApikeyById returns the key", async () => {
+      const [created] = await db.createApikey({
+        uid,
+        name: "GetById Key",
+        permissions: {},
+      });
+      const found = await db.getApikeyById(created.kid);
+      assert.equal(found.kid, created.kid);
+      assert.equal(found.name, "GetById Key");
+    });
+
+    it("getApikeyById throws NotFoundAbodeError for unknown kid", async () => {
+      await assert.rejects(
+        () => db.getApikeyById("00000000-0000-0000-0000-000000000000"),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteApikeyById removes the key", async () => {
+      const [created] = await db.createApikey({
+        uid,
+        name: "Delete Key",
+        permissions: {},
+      });
+      await db.deleteApikeyById(created.kid);
+      await assert.rejects(
+        () => db.getApikeyById(created.kid),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteApikeyById throws NotFoundAbodeError for unknown kid", async () => {
+      await assert.rejects(
+        () => db.deleteApikeyById("00000000-0000-0000-0000-000000000000"),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+}

test/shared/auth.ts

@@ -0,0 +1,144 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import type { BackendDbInterface } from "../../src/db/types/DbInterface.js";
+import {
+  NotFoundAbodeError,
+  NotAuthorizedAbodeError,
+  ConflictAbodeError,
+} from "../../src/db/types/errors.js";
+import { hashPassword } from "../../src/util/hash.js";
+
+export function runAuthTests(
+  name: string,
+  getDb: () => Promise<{ db: BackendDbInterface; close(): void }>,
+  createExpiredApikey?: (
+    db: BackendDbInterface,
+    uid: string,
+  ) => Promise<`at_${string}`>,
+): void {
+  describe(`${name}: auth`, async () => {
+    let db: BackendDbInterface;
+    let close: () => void;
+    let email: string;
+    const password = "auth-test-password";
+
+    before(async () => {
+      ({ db, close } = await getDb());
+      email = `auth-user-${Date.now()}@test.example`;
+      const pw = await hashPassword(password);
+      await db.createUser({
+        email,
+        name: "Auth User",
+        password: pw,
+        flags: {},
+      });
+    });
+
+    after(() => close());
+
+    it("getUserByLogin returns user on correct credentials", async () => {
+      const user = await db.getUserByLogin({ email, password });
+      assert.equal(user.email, email);
+      assert.ok(!("password" in user));
+    });
+
+    it("getUserByLogin throws NotAuthorizedAbodeError for wrong password", async () => {
+      await assert.rejects(
+        () => db.getUserByLogin({ email, password: "wrong-password" }),
+        (err) => {
+          assert.ok(err instanceof NotAuthorizedAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("getUserByLogin throws NotFoundAbodeError for unknown email", async () => {
+      await assert.rejects(
+        () =>
+          db.getUserByLogin({
+            email: "nobody@nowhere.example",
+            password: "any",
+          }),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("getUserByLogin throws ConflictAbodeError for #unset password", async () => {
+      const unsetEmail = `unset-${Date.now()}@test.example`;
+      await db.createUser({
+        email: unsetEmail,
+        name: "Unset User",
+        password: "#unset",
+        flags: {},
+      });
+      await assert.rejects(
+        () => db.getUserByLogin({ email: unsetEmail, password: "any" }),
+        (err) => {
+          assert.ok(err instanceof ConflictAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+
+  describe(`${name}: auth apikey`, async () => {
+    let db: BackendDbInterface;
+    let close: () => void;
+    let uid: string;
+
+    before(async () => {
+      ({ db, close } = await getDb());
+      const pw = await hashPassword("apikey-auth-password");
+      const user = await db.createUser({
+        email: `apikey-auth-${Date.now()}@test.example`,
+        name: "Apikey Auth User",
+        password: pw,
+        flags: {},
+      });
+      uid = user.uid;
+    });
+
+    after(() => close());
+
+    it("getUserByApikey returns [user, apikey] for valid token", async () => {
+      const [, token] = await db.createApikey({
+        uid,
+        name: "Auth Key",
+        permissions: {},
+      });
+      const [user, apikey] = await db.getUserByApikey(token);
+      assert.equal(user.uid, uid);
+      assert.ok(apikey.kid);
+      assert.equal(apikey.uid, uid);
+    });
+
+    it("getUserByApikey throws NotAuthorizedAbodeError for expired key", async (t) => {
+      if (!createExpiredApikey) {
+        t.skip("createExpiredApikey helper not provided for this backend");
+        return;
+      }
+      const token = await createExpiredApikey(db, uid);
+      await assert.rejects(
+        () => db.getUserByApikey(token),
+        (err) => {
+          assert.ok(err instanceof NotAuthorizedAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("getUserByApikey throws NotFoundAbodeError for unknown token", async () => {
+      const fakeToken = `at_${"0".repeat(32)}` as `at_${string}`;
+      await assert.rejects(
+        () => db.getUserByApikey(fakeToken),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+}

test/shared/residents.ts

@@ -0,0 +1,163 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import type { DbInterface } from "../../src/db/types/DbInterface.js";
+import {
+  NotFoundAbodeError,
+  InvalidAbodeError,
+} from "../../src/db/types/errors.js";
+import { hashPassword } from "../../src/util/hash.js";
+
+export function runResidentTests(
+  name: string,
+  getDb: () => Promise<{ db: DbInterface; close(): void }>,
+): void {
+  describe(`${name}: residents`, async () => {
+    let db: DbInterface;
+    let close: () => void;
+    let uid: string;
+    let aid: string;
+    let ctxUid: string;
+
+    before(async () => {
+      ({ db, close } = await getDb());
+      const pw = await hashPassword("resident-pw");
+      // ctx user (creator of abode)
+      const ctx = await db.createUser({
+        email: `res-ctx-${Date.now()}@test.example`,
+        name: "Resident Ctx",
+        password: pw,
+        flags: {},
+      });
+      ctxUid = ctx.uid;
+      // the resident user
+      const resUser = await db.createUser({
+        email: `resident-${Date.now()}@test.example`,
+        name: "Resident User",
+        password: pw,
+        flags: {},
+      });
+      uid = resUser.uid;
+      const abode = await db.createAbode(
+        { name: `Resident Abode ${Date.now()}` },
+        { uid: ctxUid },
+      );
+      aid = abode.aid;
+      await db.createResident({ uid, aid, flags: {} }, { uid: ctxUid });
+    });
+
+    after(() => close());
+
+    it("getResidentById returns the created resident", async () => {
+      const found = await db.getResidentById(uid, aid);
+      assert.equal(found.uid, uid);
+      assert.equal(found.aid, aid);
+      assert.ok(found.created_at);
+    });
+
+    it("getResidentById throws NotFoundAbodeError for unknown pair", async () => {
+      await assert.rejects(
+        () =>
+          db.getResidentById(
+            "00000000-0000-0000-0000-000000000000",
+            "00000000-0000-0000-0000-000000000001",
+          ),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("listResidents includes the created resident", async () => {
+      const residents = await db.listResidents();
+      assert.ok(Array.isArray(residents));
+      const found = residents.find((r) => r.uid === uid && r.aid === aid);
+      assert.ok(found, "created resident appears in listResidents");
+    });
+
+    it("listResidentsByUserId filters by uid", async () => {
+      const results = await db.listResidentsByUserId(uid);
+      assert.ok(results.every((r) => r.uid === uid));
+      assert.ok(results.some((r) => r.aid === aid));
+    });
+
+    it("listResidentsByAbodeId filters by aid", async () => {
+      const results = await db.listResidentsByAbodeId(aid);
+      assert.ok(results.every((r) => r.aid === aid));
+      assert.ok(results.some((r) => r.uid === uid));
+    });
+
+    it("listUsersByAbodeId returns users in the abode", async () => {
+      const users = await db.listUsersByAbodeId(aid);
+      assert.ok(Array.isArray(users));
+      const found = users.find((u) => u.uid === uid);
+      assert.ok(found, "resident user appears in listUsersByAbodeId");
+    });
+
+    it("listAbodesByUserId returns abodes for user", async () => {
+      const abodes = await db.listAbodesByUserId(uid);
+      assert.ok(Array.isArray(abodes));
+      const found = abodes.find((a) => a.aid === aid);
+      assert.ok(found, "abode appears in listAbodesByUserId");
+    });
+
+    it("updateResident updates flags", async () => {
+      const updated = await db.updateResident(
+        { uid, aid, flags: { admin: true } },
+        { uid: ctxUid },
+      );
+      assert.equal(updated.uid, uid);
+      assert.deepEqual(updated.flags, { admin: true });
+    });
+
+    it("updateResident with no fields throws InvalidAbodeError", async () => {
+      await assert.rejects(
+        () => db.updateResident({ uid, aid }, { uid: ctxUid }),
+        (err) => {
+          assert.ok(err instanceof InvalidAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteResidentById removes the resident then throws on re-fetch", async () => {
+      const pw = await hashPassword("del-res-pw");
+      const user2 = await db.createUser({
+        email: `del-res-${Date.now()}@test.example`,
+        name: "Del Res User",
+        password: pw,
+        flags: {},
+      });
+      const abode2 = await db.createAbode(
+        { name: "Del Abode" },
+        { uid: ctxUid },
+      );
+      await db.createResident(
+        { uid: user2.uid, aid: abode2.aid, flags: {} },
+        { uid: ctxUid },
+      );
+      await db.deleteResidentById(user2.uid, abode2.aid);
+      await assert.rejects(
+        () => db.getResidentById(user2.uid, abode2.aid),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteResidentById throws NotFoundAbodeError for unknown pair", async () => {
+      await assert.rejects(
+        () =>
+          db.deleteResidentById(
+            "00000000-0000-0000-0000-000000000002",
+            "00000000-0000-0000-0000-000000000003",
+          ),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+}

test/shared/sessions.ts

@@ -0,0 +1,65 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import type { BackendDbInterface } from "../../src/db/types/DbInterface.js";
+import { NotFoundAbodeError } from "../../src/db/types/errors.js";
+import { hashPassword } from "../../src/util/hash.js";
+
+export function runSessionTests(
+  name: string,
+  getDb: () => Promise<{ db: BackendDbInterface; close(): void }>,
+): void {
+  describe(`${name}: sessions`, async () => {
+    let db: BackendDbInterface;
+    let close: () => void;
+    let uid: string;
+
+    before(async () => {
+      ({ db, close } = await getDb());
+      const pw = await hashPassword("session-password");
+      const user = await db.createUser({
+        email: `session-user-${Date.now()}@test.example`,
+        name: "Session User",
+        password: pw,
+        flags: {},
+      });
+      uid = user.uid;
+    });
+
+    after(() => close());
+
+    it("createSession returns an as_ token", async () => {
+      const token = await db.createSession(uid);
+      assert.ok(token.startsWith("as_"), `token starts with as_: ${token}`);
+      assert.equal(token.length, 35, "as_ + 32 hex chars");
+    });
+
+    it("getUserBySession returns the correct user", async () => {
+      const token = await db.createSession(uid);
+      const user = await db.getUserBySession(token);
+      assert.equal(user.uid, uid);
+    });
+
+    it("getUserBySession throws NotFoundAbodeError for unknown token", async () => {
+      const fakeToken = `as_${"0".repeat(32)}` as `as_${string}`;
+      await assert.rejects(
+        () => db.getUserBySession(fakeToken),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteSessionsByUser invalidates all sessions for user", async () => {
+      const token = await db.createSession(uid);
+      await db.deleteSessionsByUser(uid);
+      await assert.rejects(
+        () => db.getUserBySession(token),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+}

test/shared/users.ts

@@ -0,0 +1,193 @@
+import { describe, it, before, after } from "node:test";
+import assert from "node:assert/strict";
+import type { DbInterface } from "../../src/db/types/DbInterface.js";
+import {
+  NotFoundAbodeError,
+  InvalidAbodeError,
+  ReadonlyAbodeError,
+} from "../../src/db/types/errors.js";
+import { hashPassword } from "../../src/util/hash.js";
+
+export function runUserTests(
+  name: string,
+  getDb: () => Promise<{ db: DbInterface; close(): void }>,
+  getReadonlyDb?: () => Promise<{ db: DbInterface; close(): void }>,
+): void {
+  describe(`${name}: users`, async () => {
+    let db: DbInterface;
+    let close: () => void;
+    let hashedPw: Awaited<ReturnType<typeof hashPassword>>;
+
+    before(async () => {
+      ({ db, close } = await getDb());
+      hashedPw = await hashPassword("test-password");
+    });
+
+    after(() => close());
+
+    it("createUser returns a ClientUser without password", async () => {
+      const user = await db.createUser({
+        email: `user-create-${Date.now()}@test.example`,
+        name: "Test User",
+        password: hashedPw,
+        flags: {},
+      });
+      assert.ok(user.uid, "has uid");
+      assert.equal(user.name, "Test User");
+      assert.ok(!("password" in user), "no password field");
+      assert.ok(user.created_at);
+      assert.ok(user.updated_at);
+    });
+
+    it("getUserById returns the created user", async () => {
+      const created = await db.createUser({
+        email: `user-byid-${Date.now()}@test.example`,
+        name: "ById User",
+        password: hashedPw,
+        flags: {},
+      });
+      const found = await db.getUserById(created.uid);
+      assert.equal(found.uid, created.uid);
+      assert.equal(found.name, "ById User");
+    });
+
+    it("getUserById throws NotFoundAbodeError for unknown uid", async () => {
+      await assert.rejects(
+        () => db.getUserById("00000000-0000-0000-0000-000000000000"),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("getUserByEmail returns the created user", async () => {
+      const email = `user-byemail-${Date.now()}@test.example`;
+      await db.createUser({
+        email,
+        name: "ByEmail User",
+        password: hashedPw,
+        flags: {},
+      });
+      const found = await db.getUserByEmail(email);
+      assert.ok("email" in found, "result includes email");
+      assert.equal(found.email, email);
+    });
+
+    it("getUserByEmail throws NotFoundAbodeError for unknown email", async () => {
+      await assert.rejects(
+        () => db.getUserByEmail("nobody@nowhere.example"),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("listUsers includes the created user", async () => {
+      const email = `user-list-${Date.now()}@test.example`;
+      const created = await db.createUser({
+        email,
+        name: "Listed User",
+        password: hashedPw,
+        flags: {},
+      });
+      const users = await db.listUsers();
+      assert.ok(Array.isArray(users));
+      const found = users.find((u) => u.uid === created.uid);
+      assert.ok(found, "created user appears in listUsers");
+    });
+
+    it("updateUser updates the name", async () => {
+      const created = await db.createUser({
+        email: `user-update-${Date.now()}@test.example`,
+        name: "Before Update",
+        password: hashedPw,
+        flags: {},
+      });
+      const updated = await db.updateUser({
+        uid: created.uid,
+        name: "After Update",
+      });
+      assert.equal(updated.uid, created.uid);
+      assert.equal(updated.name, "After Update");
+    });
+
+    it("updateUser with no fields throws InvalidAbodeError", async () => {
+      const created = await db.createUser({
+        email: `user-noupdate-${Date.now()}@test.example`,
+        name: "No Update",
+        password: hashedPw,
+        flags: {},
+      });
+      await assert.rejects(
+        () => db.updateUser({ uid: created.uid }),
+        (err) => {
+          assert.ok(err instanceof InvalidAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteUserById removes the user", async () => {
+      const created = await db.createUser({
+        email: `user-delete-${Date.now()}@test.example`,
+        name: "To Delete",
+        password: hashedPw,
+        flags: {},
+      });
+      await db.deleteUserById(created.uid);
+      await assert.rejects(
+        () => db.getUserById(created.uid),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+
+    it("deleteUserById throws NotFoundAbodeError for unknown uid", async () => {
+      await assert.rejects(
+        () => db.deleteUserById("00000000-0000-0000-0000-000000000000"),
+        (err) => {
+          assert.ok(err instanceof NotFoundAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+
+  describe(`${name}: users readonly`, async () => {
+    let db: DbInterface;
+    let close: () => void;
+    let hashedPw: Awaited<ReturnType<typeof hashPassword>>;
+
+    before(async () => {
+      if (getReadonlyDb) ({ db, close } = await getReadonlyDb());
+      hashedPw = await hashPassword("test-password");
+    });
+
+    after(() => close?.());
+
+    it("createUser on readonly db throws ReadonlyAbodeError", async (t) => {
+      if (!getReadonlyDb) {
+        t.skip("getReadonlyDb helper not provided for this backend");
+        return;
+      }
+      assert.ok(db.readonly, "test db is readonly");
+      await assert.rejects(
+        () =>
+          db.createUser({
+            email: "readonly@test.example",
+            name: "Readonly",
+            password: hashedPw,
+            flags: {},
+          }),
+        (err) => {
+          assert.ok(err instanceof ReadonlyAbodeError);
+          return true;
+        },
+      );
+    });
+  });
+}