Add area-level documentation for the five most significant cross-context
feature areas under agents-docs/features/:
- websocket-envelopes: full envelope catalogue, lifecycle, dispatcher
- ipc-bridge: window.electronAPI surface, IPC channels, CQRS dispatch
- plugin-system: manifest contract, runtime, capabilities, plugin-support API
- server-directory: REST endpoints, CQRS, entities, business rules
- voice-signaling: mesh signaling, RNNoise pipeline, domain split
Update agents-docs/FEATURES.md index alphabetically and remove the
"no cross-context feature docs" placeholder.
Each doc records honest TODOs for verified gaps (stale signaling-contracts.ts,
window.api vs window.electronAPI mismatch, IPC error envelope drift from
CONTEXT.md, missing OpenAPI coverage for server-directory routes, no
envelope round-trip test).
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
