feat(postgres): implement notes CRUD and export import

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

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

@@ -21,6 +21,7 @@ interface Rows {
   abodes?: Record<string, unknown>[];
   residents?: Record<string, unknown>[];
   apikeys?: Record<string, unknown>[];
+  notes?: Record<string, unknown>[];
 }
 
 class FakePg implements WrappedPgClient {
@@ -43,6 +44,7 @@ class FakePg implements WrappedPgClient {
     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[];
   }
 
@@ -126,6 +128,19 @@ function seededRows(): Rows {
         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,
+      },
+    ],
   };
 }
 
@@ -145,7 +160,7 @@ function line(kind: string, data: unknown): string {
 }
 
 describe("postgres export", () => {
-  it("streams meta + the four supported kinds, never note", async () => {
+  it("streams meta and all supported kinds, including notes", async () => {
     const db = new PostgresInterface(new FakePg(seededRows()));
     const lines = parseLines(await streamToString(db.export()));
 
@@ -159,7 +174,7 @@ describe("postgres export", () => {
     assert.ok(kinds.has("abode"));
     assert.ok(kinds.has("resident"));
     assert.ok(kinds.has("apikey"));
-    assert.ok(!kinds.has("note"), "note is unsupported on postgres");
+    assert.ok(kinds.has("note"));
   });
 
   it("emits record kinds grouped in FK-safe EXPORT_KIND_ORDER", async () => {
@@ -204,7 +219,7 @@ describe("postgres export", () => {
 });
 
 describe("postgres import", () => {
-  it("dispatches inserts per kind, skips note, and commits", async () => {
+  it("dispatches inserts per kind, including note, and commits", async () => {
     const fake = new FakePg();
     const db = new PostgresInterface(fake);
     const source = Readable.from([
@@ -233,7 +248,6 @@ describe("postgres import", () => {
         created_at: iso,
         expires_at: null,
       }),
-      // note lines are silently skipped on postgres
       line("note", {
         nid: "nnnnnnnn-nnnn-nnnn-nnnn-nnnnnnnnnnn1",
         aid: "aaaaaaaa-aaaa-aaaa-aaaa-aaaaaaaaaaa1",
@@ -248,14 +262,14 @@ describe("postgres import", () => {
     ]);
 
     const result = await db.import(source);
-    assert.deepEqual(result.counts, { user: 1, abode: 1, apikey: 1 });
+    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",
     ]);
-    assert.ok(!fake.inserts.some((i) => i.table === "notes"), "no note insert");
     // apikey gets a freshly-minted token (never exported)
     const apikeyInsert = fake.inserts.find((i) => i.table === "apikeys")!;
     assert.ok(