Channel plugin resolution fails with 'Channel is unavailable: <channel>'
after the active plugin registry is replaced at runtime. The root cause is
that getChannelPlugin() resolves against the live registry snapshot, which
is replaced when non-primary registry loads (e.g., config-schema reads)
call loadOpenClawPlugins(). If the replacement registry does not carry the
same channel entries, outbound message delivery and subagent announce
silently break.
This mirrors the existing pinActivePluginHttpRouteRegistry pattern: the
channel registry is pinned at gateway startup and released on shutdown.
Subsequent setActivePluginRegistry calls no longer evict the channel
snapshot, so getChannelPlugin() always resolves against the registry that
was active when the gateway booted.
This adds a new `api.registerCommand()` method to the plugin API, allowing
plugins to register slash commands that execute without invoking the AI agent.
Features:
- Plugin commands are processed before built-in commands and the agent
- Commands can optionally require authorization
- Commands can accept arguments
- Async handlers are supported
Use case: plugins can implement toggle commands (like /tts_on, /tts_off)
that respond immediately without consuming LLM API calls.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>