chore: 🔀 merge upstream nightly v0.0.46-nightly.20261006.2735

[chamaquita-d3]

Fixes #53

Merges upstream nightly v0.0.46-nightly.20261006.2735 into custom-nightly. Upstream renamed service layers to layerXyz, flattened Services//Layers/ folders and added the server browser; the fork's serve mode, voice transcription and server push were ported onto the new names.

File:lines	Class	custom-nightly	Upstream	Kept	Why
apps/mobile/src/connection/runtime.ts:14-24	same question, different answers	named imports of background-activity/platform, plus serverPushRegistrationLayer	* as BackgroundActivity / * as ConnectionPlatform namespace imports	Upstream namespace imports + fork's serverPushRegistration import	Upstream renamed; fork import is unrelated
apps/mobile/src/connection/runtime.ts:57-66	disjoint	connectionLayer merging reporter + server push registration	layerConnection using BackgroundActivity.layerReporter	layerConnection merging BackgroundActivity.layerReporter and serverPushRegistrationLayer	Keeps fork's server push, adopts upstream naming
apps/server/src/http.test.ts:39-43	superseded	imports staticAndDevRouteLayer, voiceTranscriptionRouteLayer	removed named route imports (uses ServerHttp.*)	Dropped the imports; voice test now uses ServerHttp.voiceTranscriptionRouteLayer / layerBrowserApiCors	Upstream moved to ServerHttp namespace
apps/server/src/server.ts:29-44	disjoint	named http.ts imports incl. voice route	withUntracedRequests + ServerHttp namespace	Upstream's imports	Voice route reached via ServerHttp.voiceTranscriptionRouteLayer
apps/server/src/server.ts:72-78	disjoint	voice imports + old Layers/ hydration path	new ProviderInstanceRegistryHydration path	Both: voice imports + upstream hydration import	Different things changed
apps/server/src/server.ts:250-256	disjoint	ServeModeLayerLive + diagnostics layer	renamed layerResourceDiagnostics	layerServeMode + layerResourceDiagnostics	Fork's serve mode layer on upstream naming
apps/server/src/server.ts:292-304	disjoint	VoiceTranscriptionLayerLive + VCS registry	layerVcsDriverRegistry	layerVoiceTranscription + layerVcsDriverRegistry	Fork's voice layer on upstream naming
apps/server/src/server.ts:673-683	disjoint	provide Background/ServeMode/Diagnostics/Usage/Voice layers	renamed layers without serve mode/voice	Upstream names + layerServeMode + layerVoiceTranscription	Keep both
apps/server/src/server.ts:713-729	disjoint	routes incl. voice route, device hub proxy, rpc route	ServerHttp.layer*, DeviceHubProxy.layer, ServerBrowserStream.routeLayer, Ws.layer	Upstream routes + ServerHttp.voiceTranscriptionRouteLayer	Keep fork's voice route
apps/server/src/ws.ts:167-174	disjoint	ServerPush import + old Services/ paths	flattened provider registry paths	New paths + ServerPush import	Upstream moved files; fork import unrelated
docs/user/remote-access.md:175-251	disjoint	"Keep your computer awake (serve mode)" section	"Browser on a remote environment" section	Both sections	Separate topics
packages/contracts/src/environment.ts:211-229	disjoint	voiceTranscription, serveModeLidClosed, serveMode capabilities	serverBrowser capability	All four	Independent capability flags

Also fixed fork-only tests (ServeMode.test.ts, RecentThreadMessages.test.ts) to import persistence/Sqlite.ts / layerMemory after upstream's folder flattening. pnpm-lock.yaml auto-merged and pnpm install --lockfile-only made no further changes.

Checks: vp fmt on resolved files. vp lint crashed (oxc allocator) on this 4 GB machine, and typecheck/tests were left to GitHub CI.

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