Initial commit: StackPilot Phase 1 (Core)

Self-hosted Docker Compose manager.
- Backend: FastAPI + docker-py + SQLite (JWT auth, file-first stacks,
  lifecycle, live status, WebSocket logs, docker-run converter, audit log)
- Frontend: React + Vite + Tailwind (login/setup, dashboard, stacks,
  stack detail, Monaco editor, dark/light theme)
- Deployment: docker-compose.yml, Dockerfiles, nginx reverse proxy

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

frontend/src/App.tsx

@@ -0,0 +1,52 @@
+import { useEffect } from "react";
+import { BrowserRouter, Navigate, Outlet, Route, Routes } from "react-router-dom";
+import { Layout } from "@/components/layout/Layout";
+import { Login } from "@/pages/Login";
+import { Dashboard } from "@/pages/Dashboard";
+import { Stacks } from "@/pages/Stacks";
+import { StackDetail } from "@/pages/StackDetail";
+import { StackEditor } from "@/pages/StackEditor";
+import { Networks, Images, Templates, Settings } from "@/pages/Placeholder";
+import { useAuthStore } from "@/store/auth";
+import { useThemeStore } from "@/store/theme";
+
+function RequireAuth() {
+  const token = useAuthStore((s) => s.accessToken);
+  return token ? <Outlet /> : <Navigate to="/login" replace />;
+}
+
+export default function App() {
+  const applyTheme = useThemeStore((s) => s.apply);
+  const fetchMe = useAuthStore((s) => s.fetchMe);
+  const token = useAuthStore((s) => s.accessToken);
+
+  useEffect(() => {
+    applyTheme();
+  }, [applyTheme]);
+
+  useEffect(() => {
+    if (token) fetchMe().catch(() => {});
+  }, [token, fetchMe]);
+
+  return (
+    <BrowserRouter>
+      <Routes>
+        <Route path="/login" element={<Login />} />
+        <Route element={<RequireAuth />}>
+          <Route element={<Layout />}>
+            <Route path="/" element={<Dashboard />} />
+            <Route path="/stacks" element={<Stacks />} />
+            <Route path="/stacks/new" element={<StackEditor />} />
+            <Route path="/stacks/:id" element={<StackDetail />} />
+            <Route path="/stacks/:id/edit" element={<StackEditor />} />
+            <Route path="/networks" element={<Networks />} />
+            <Route path="/images" element={<Images />} />
+            <Route path="/templates" element={<Templates />} />
+            <Route path="/settings" element={<Settings />} />
+          </Route>
+        </Route>
+        <Route path="*" element={<Navigate to="/" replace />} />
+      </Routes>
+    </BrowserRouter>
+  );
+}