Step 1 of host control mode. Adds the protocol surface only — no behavior yet:
- EVENTS.SET_CONTROL_MODE (client->server: host sets mode)
- EVENTS.CONTROL_MODE (server->client: mode changed)
- CONTROL_MODES { EVERYONE, HOST_ONLY }
Purely additive; old clients ignore the new events. Propagated to
extension/shared via build-extension. Also records the audited design
decisions in the edge-case log.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Planning docs for the optional per-room Host Control Mode (Teleparty-style
host-only playback control) requested via GitHub issue.
- host-control-mode-EDGECASES.md: canonical branch entry-point — goals, scope,
trust model, architecture summary, 21 edge cases, test matrix, open decisions.
- host-control-mode-plan.md: layered implementation plan with concrete code hooks
(server room state, three-layer gate, snap-back, guest desync flow, UI/i18n).
Temporary working docs for this branch; to be folded in or removed before merge.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
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