feat: add task queue with human-in-the-loop approval + work orders + UI bug fixes

Task Queue system:
- New /tasks page with three-column layout (Pending/Active/Completed)
- Full CRUD API at /api/tasks with approve/veto/modify/pause/cancel/retry
- SQLite persistence in task_queue table
- WebSocket live updates via ws_manager
- Create task modal with agent assignment and priority
- Auto-approve rules for low-risk tasks
- HTMX polling for real-time column updates
- HOME TASK buttons now link to task queue with agent pre-selected
- MARKET HIRE buttons link to task queue with agent pre-selected

Work Order system:
- External submission API for agents/users (POST /work-orders/submit)
- Risk scoring and configurable auto-execution thresholds
- Dashboard at /work-orders/queue with approve/reject/execute flow
- Integration with swarm task system for execution

UI & Dashboard bug fixes:
- EVENTS: add startup event so page is never empty
- LEDGER: fix empty filter params in URL
- MISSION CONTROL: LLM backend and model now read from /health
- MISSION CONTROL: agent count fallback to /swarm/agents
- SWARM: HTMX fallback loads initial data if WebSocket is slow
- MEMORY: add edit/delete buttons for personal facts
- UPGRADES: add empty state guidance with links
- BRIEFING: add regenerate button and POST /briefing/regenerate endpoint

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/dashboard/app.py

@@ -32,6 +32,8 @@ from dashboard.routes.ledger import router as ledger_router
 from dashboard.routes.memory import router as memory_router
 from dashboard.routes.router import router as router_status_router
 from dashboard.routes.upgrades import router as upgrades_router
+from dashboard.routes.work_orders import router as work_orders_router
+from dashboard.routes.tasks import router as tasks_router
 from router.api import router as cascade_router
 
 logging.basicConfig(
@@ -107,6 +109,17 @@ async def lifespan(app: FastAPI):
         except Exception as exc:
             logger.error("Failed to spawn persona agents: %s", exc)
 
+    # Log system startup event so the Events page is never empty
+    try:
+        from swarm.event_log import log_event, EventType
+        log_event(
+            EventType.SYSTEM_INFO,
+            source="coordinator",
+            data={"message": "Timmy Time system started"},
+        )
+    except Exception:
+        pass
+
     # Auto-bootstrap MCP tools
     from mcp.bootstrap import auto_bootstrap, get_bootstrap_status
     try:
@@ -182,6 +195,8 @@ app.include_router(ledger_router)
 app.include_router(memory_router)
 app.include_router(router_status_router)
 app.include_router(upgrades_router)
+app.include_router(work_orders_router)
+app.include_router(tasks_router)
 app.include_router(cascade_router)