Sterister b014f9b44c feat(observer): M-Obs 1-3 — event bus, server hooks, observer backend ...

M-Obs 1: Event bus in @shade/core
- ShadeEventEmitter with typed event union, ring buffer for replay
- 12 event types covering session lifecycle, ratchet operations,
  prekey changes, identity rotation, trust changes
- Wired into ShadeSessionManager (zero overhead when not enabled)
- shortHash helper for safe display of public keys
- Security test: regex-checks event payloads contain no key material

M-Obs 2: Prekey server event hooks
- PrekeyServerEvents emitter mirroring core's pattern
- 5 server event types: registered, fetched, replenished, deleted, rate_limited
- Wired into all routes including the rate-limit error handler
- shortHash helper using crypto.subtle directly (no provider dep)

M-Obs 3: @shade/observer package
- StateAggregator subscribes to client + server events, builds rolling snapshot
- Hono routes: GET /api/state (snapshot), GET /api/events (SSE stream)
- Bearer token auth via SHADE_OBSERVER_TOKEN, query string for SSE
- Refuses to start with token < 16 chars (ConfigurationError)
- Static file serving for bundled dashboard at /dashboard/
- Placeholder dashboard renders when no built SPA present

220 tests passing, 0 failures.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

2026-04-10 18:49:51 +02:00

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