feat: add festival management WIP

Author: chiptus

.claude/settings.local.json

@@ -0,0 +1,11 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(npm run build:*)",
+      "Bash(npm run test:e2e:*)",
+      "Bash(rm:*)",
+      "Bash(npm run lint)"
+    ],
+    "deny": []
+  }
+}

src/App.tsx

@@ -31,6 +31,8 @@ const App = () => (
             <Route path="/groups/:groupId" element={<GroupDetail />} />
             <Route path="/schedule" element={<Schedule />} />
             <Route path="/admin" element={<Admin />} />
+            <Route path="/admin/:tab" element={<Admin />} />
+            <Route path="/admin/festivals/:festivalId/:subtab" element={<Admin />} />
             <Route path="/privacy" element={<PrivacyPolicy />} />
             <Route path="/terms" element={<TermsOfService />} />
             <Route path="/cookies" element={<CookiePolicy />} />