feat: AbstractWizard integration for initialization

- Add init_wizard.py: fetch config from AbstractWizard on startup
- Create admin user if not exists (from wizard config)
- Create default project if configured
- Graceful fallback when wizard is unavailable

app/main.py

@@ -46,6 +46,14 @@ app.include_router(misc_router)
 # Run database migration on startup
 @app.on_event("startup")
 def startup():
-    from app.core.config import Base, engine
+    from app.core.config import Base, engine, SessionLocal
     from app.models import webhook, apikey, activity, milestone, notification, worklog
     Base.metadata.create_all(bind=engine)
+
+    # Initialize from AbstractWizard (admin user, default project, etc.)
+    from app.init_wizard import run_init
+    db = SessionLocal()
+    try:
+        run_init(db)
+    finally:
+        db.close()