Add SetExplicitServices on LocalBackend so the browser WASM node can
declare TCP/UDP services that get uploaded to the control server and
distributed to all peers in the netmap — without the OS port-scanner
(portlist extension) that cannot run in a browser.
The ShouldUploadServices gate in hostInfoWithServicesLocked is bypassed
when services were set explicitly, leaving all other callers unaffected.
On the JS side, a new setServices(services) method accepts an array of
{proto, port, description?} objects. The netmap JSON now includes a
services field on every node (self and peers), populated from
Hostinfo.Services with internal peerapi entries stripped (they are
already reflected in peerAPIURL).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
codinget
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