- Add deleteWorkspaceByChannelId() to DisclawDatabase
- Add src/lifecycle/categories.ts: ensureCategories() + moveToCategory()
- Add src/lifecycle/reconcile.ts: reconcile() assigns channels to active/inactive/archive categories on startup
- Add src/lifecycle/channel-delete-handler.ts: handles channelDelete events for management, category, and agent channels
- Wire lifecycle into bot.ts: state object, ensureCategories, reconcile, channelDelete listener
- Extend handleNewAgent() with optional activeCategoryId to place new channels in the active category
- Add 13 unit tests covering all lifecycle scenarios
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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