Feature: Feedback page

[FadyGergesRezk]

Implement the Feedback page under /feedback.

Priority: P1

API endpoints used

Method	Endpoint	Description
GET	/feedback	List all feedback (FeedbackSummary[])
POST	/feedback	Create feedback (FeedbackCreate)
GET	/feedback/{feedback_id}	Get feedback details (Feedback)
PATCH	/feedback/{feedback_id}	Update feedback (FeedbackPartialUpdate)
DELETE	/feedback/{feedback_id}	Delete feedback

Tasks

• Add src/features/feedback/api/queries.ts with useListFeedback and useGetFeedback hooks using TanStack Query; expose query options for the route loader
• Add src/features/feedback/api/mutations.ts with useCreateFeedback, useUpdateFeedback, and useDeleteFeedback hooks; on success invalidate feedbackListQueryOptions
• Add src/features/feedback/api/query-keys.ts for structured query keys
• Wire a React Router v7 loader on the /feedback route that calls queryClient.ensureQueryData(feedbackListQueryOptions())
• Add Zod schema for FeedbackCreate and FeedbackPartialUpdate derived from the generated types in src/api.ts
• Add Zustand slice for UI state only: selected feedback ID, detail sheet open/closed
• Build a feedback list view (shadcn/ui Table with columns: event, member, creator, created_at)
• Add a detail Sheet showing the full feedback text
• Add a "New Feedback" Dialog with a React Hook Form + Zod validated form for FeedbackCreate (required: event, member, feedback)
• Support edit (PATCH) and delete with confirmation from the detail Sheet

Acceptance criteria

• Feedback list loads before the page renders (via loader prefetch)
• Creating, editing, and deleting feedback reflects in the list without a full page reload
• Form validates required fields (event, member, feedback) before submitting and shows inline errors
• Loading, empty, and error states are visible in list/detail views