feat: add system config import, refactor install script and nginx auth

- lib/system_import: new module to import system configs into JSON at daemon startup
- daemon/server.py: call import_all() during startup for config reconciliation
- daemon/handlers/nginx.py: simplify add_domain auth handling, remove duplicate code
- scripts/install.sh: replace inline Python setup with curl-based daemon API calls; apply IP forwarding at runtime
- hoover: bump internal asset versions to v=8
- pages: bump asset versions to v=9

daemon/server.py

@@ -558,6 +558,12 @@ def main() -> None:
 
     os.chmod(socket_path, 0o660)
 
+    # Import system configs → JSON (blocking — OK at startup)
+    from lib.system_import import import_all
+    reconciled = import_all()
+    if reconciled:
+        logger.info("Reconciled subsystems: %s", ", ".join(reconciled))
+
     # Populate state from system (blocking — OK at startup)
     logger.info("Populating system state...")
     state_store.populate()