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* feat(mothership): server-persisted unread task indicators via SSE Replace fragile client-side polling + timer-based green flash with server-persisted lastSeenAt semantics, real-time SSE push via Redis pub/sub, and dot overlay UI on the Blimp icon. - Add lastSeenAt column to copilotChats for server-persisted read state - Add Redis/local pub/sub singleton for task status events (started, completed, created, deleted, renamed) - Add SSE endpoint (GET /api/mothership/events) with heartbeat and workspace-scoped filtering - Add mark-read endpoint (POST /api/mothership/chats/read) - Publish SSE events from chat, rename, delete, and auto-title handlers - Add useTaskEvents hook for client-side SSE subscription - Add useMarkTaskRead mutation with optimistic update - Replace timer logic in sidebar with TaskStatus state machine (running/unread/idle) and dot overlay using brand color variables - Mark tasks read on mount and stream completion in home page - Fix security: add userId check to delete WHERE clause - Fix: bump updatedAt on stream completion - Fix: set lastSeenAt on rename to prevent false-positive unread Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: address PR review feedback - Return 404 when delete finds no matching chat (was silent no-op) - Move log after ownership check so it only fires on actual deletion - Publish completed SSE event from stop route so sidebar dot clears on abort Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: backfill last_seen_at in migration to prevent false unread dots Existing rows would have last_seen_at = NULL after migration, causing all past completed tasks to show as unread. Backfill sets last_seen_at to updated_at for all existing rows. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: timestamp mismatch on task creation + wasSendingRef leak across navigation - Pass updatedAt explicitly alongside lastSeenAt on chat creation so both use the same JS timestamp (DB defaultNow() ran later, causing updatedAt > lastSeenAt → false unread) - Reset wasSendingRef when chatId changes to prevent a stale true from task A triggering a redundant markRead on task B Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: mark-read fires for inline-created chats + encode workspaceId in SSE URL Expose resolvedChatId from useChat so home.tsx can mark-read even when chatId prop stays undefined after replaceState URL update. Also URL-encode workspaceId in EventSource URL as a defensive measure. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: auto-focus home input on initial view + fix sidebar task click handling Auto-focus the textarea when the initial home view renders. Also fix sidebar task click to always call onMultiSelectClick so selection state stays consistent. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * fix: auto-title sets lastSeenAt + move started event inside DB guard Auto-title now sets both updatedAt and lastSeenAt (matching the rename route pattern) to prevent false-positive unread dots. Also move the 'started' SSE event inside the if(updated) guard so it only fires when the DB update actually matched a row. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> * modified tasks multi select to be just like workflows * fix * refactor: extract generic pub/sub and SSE factories + fixes - Extract createPubSubChannel factory (lib/events/pubsub.ts) to eliminate duplicated Redis/EventEmitter boilerplate between task and MCP pub/sub - Extract createWorkspaceSSE factory (lib/events/sse-endpoint.ts) to share auth, heartbeat, and cleanup logic across SSE endpoints - Fix auto-title race suppressing unread status by removing updatedAt/lastSeenAt from title-only DB update - Fix wheel event listener leak in ResourceTabs (RefCallback cleanup was silently discarded) - Fix getFullSelection() missing taskIds (inconsistent with hasAnySelection) - Deduplicate SSE_RESPONSE_HEADERS to spread from shared SSE_HEADERS - Hoist isSttAvailable to module-level constant to avoid per-render IIFE Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> --------- Co-authored-by: Claude Opus 4.6 <noreply@anthropic.com>