feat: Add comprehensive test suite and misc improvements

- Add frontend unit tests with Vitest for components, hooks, pages, and utilities
- Add backend tests for webhooks, notifications, middleware, and edge cases
- Add ForgotPassword, NotFound, and ResetPassword pages
- Add migration for orphaned staff resources conversion
- Add coverage directory to gitignore (generated reports)
- Various bug fixes and improvements from previous work

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

frontend/src/hooks/useAuth.ts

@@ -9,6 +9,7 @@ import {
   getCurrentUser,
   masquerade,
   stopMasquerade,
+  forgotPassword,
   LoginCredentials,
   User,
   MasqueradeStackEntry
@@ -255,3 +256,12 @@ export const useStopMasquerade = () => {
     },
   });
 };
+
+/**
+ * Hook to request password reset
+ */
+export const useForgotPassword = () => {
+  return useMutation({
+    mutationFn: (data: { email: string }) => forgotPassword(data.email),
+  });
+};