Initial commit: RehearsalHub POC

Full-stack self-hosted band rehearsal platform:

Backend (FastAPI + SQLAlchemy 2.0 async):
- Auth with JWT (register, login, /me, settings)
- Band management with Nextcloud folder integration
- Song management with audio version tracking
- Nextcloud scan to auto-import audio files
- Band membership with link-based invite system
- Song comments
- Audio analysis worker (BPM, key, loudness, waveform)
- Nextcloud activity watcher for auto-import
- WebSocket support for real-time annotation updates
- Alembic migrations (0001–0003)
- Repository pattern, Ruff + mypy configured

Frontend (React 18 + Vite + TypeScript strict):
- Login/register page with post-login redirect
- Home page with band list and creation form
- Band page with member panel, invite link, song list, NC scan
- Song page with waveform player, annotations, comment thread
- Settings page for per-user Nextcloud credentials
- Invite acceptance page (/invite/:token)
- ESLint v9 flat config + TypeScript strict mode

Infrastructure:
- Docker Compose: PostgreSQL, Redis, API, worker, watcher, nginx
- nginx reverse proxy for static files + /api/ proxy
- make check runs all linters before docker compose build

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

web/src/api/client.ts

@@ -0,0 +1,43 @@
+const BASE = "/api/v1";
+
+function getToken(): string | null {
+  return localStorage.getItem("rh_token");
+}
+
+export function setToken(token: string): void {
+  localStorage.setItem("rh_token", token);
+}
+
+export function clearToken(): void {
+  localStorage.removeItem("rh_token");
+}
+
+async function request<T>(
+  path: string,
+  options: RequestInit = {}
+): Promise<T> {
+  const token = getToken();
+  const headers: Record<string, string> = {
+    "Content-Type": "application/json",
+    ...(options.headers as Record<string, string>),
+  };
+  if (token) {
+    headers["Authorization"] = `Bearer ${token}`;
+  }
+  const resp = await fetch(`${BASE}${path}`, { ...options, headers });
+  if (!resp.ok) {
+    const error = await resp.json().catch(() => ({ detail: resp.statusText }));
+    throw new Error(error.detail ?? resp.statusText);
+  }
+  if (resp.status === 204) return undefined as T;
+  return resp.json();
+}
+
+export const api = {
+  get: <T>(path: string) => request<T>(path),
+  post: <T>(path: string, body: unknown) =>
+    request<T>(path, { method: "POST", body: JSON.stringify(body) }),
+  patch: <T>(path: string, body: unknown) =>
+    request<T>(path, { method: "PATCH", body: JSON.stringify(body) }),
+  delete: (path: string) => request<void>(path, { method: "DELETE" }),
+};