feat(FN-3400): add native shell connection handoff, plugin management CLI/l

This merge adds a complete plugin management system (FN-3565) with CLI commands, a loader, runner, and dashboard routes, along with project-scoped auth storage (FN-3544), native shell connection support for mobile (FN-3400) spanning onboarding, connection manager, and remote desktop handoff, and ref

Fusion-Task-Id: FN-3400

packages/dashboard/app/context/ShellContext.tsx

@@ -5,6 +5,7 @@ export interface ShellContextValue {
   shellApi: FusionShellApi | null;
   state: ShellConnectionState;
   ready: boolean;
+  openConnectionManagerSignal: number;
 }
 
 const DEFAULT_STATE: ShellConnectionState = {
@@ -17,12 +18,14 @@ const ShellContext = createContext<ShellContextValue>({
   shellApi: null,
   state: DEFAULT_STATE,
   ready: true,
+  openConnectionManagerSignal: 0,
 });
 
 export function ShellProvider({ children }: PropsWithChildren) {
   const shellApi = useMemo(() => (typeof window !== "undefined" ? window.fusionShell ?? null : null), []);
   const [state, setState] = useState<ShellConnectionState>(DEFAULT_STATE);
   const [ready, setReady] = useState(!shellApi);
+  const [openConnectionManagerSignal, setOpenConnectionManagerSignal] = useState(0);
 
   useEffect(() => {
     if (!shellApi) {
@@ -41,13 +44,19 @@ export function ShellProvider({ children }: PropsWithChildren) {
       setState(nextState);
     });
 
+    const handleOpenConnectionManager = () => {
+      setOpenConnectionManagerSignal((value) => value + 1);
+    };
+    window.addEventListener("shell:open-connection-manager", handleOpenConnectionManager);
+
     return () => {
       cancelled = true;
       unsubscribe();
+      window.removeEventListener("shell:open-connection-manager", handleOpenConnectionManager);
     };
   }, [shellApi]);
 
-  return <ShellContext.Provider value={{ shellApi, state, ready }}>{children}</ShellContext.Provider>;
+  return <ShellContext.Provider value={{ shellApi, state, ready, openConnectionManagerSignal }}>{children}</ShellContext.Provider>;
 }
 
 export function useShellContext(): ShellContextValue {