fix-hardcoded-workspaceid-pages

Goal: remove hardcoded workspaceId values from client-side pages and use useWorkspace() instead.

Workflow:

1. Locate hardcoded workspace IDs

   • Search for workspaceId = and the sentinel UUID 00000000-0000-0000-0000-000000000000.

2. Replace with useWorkspace()

   • Import useWorkspace from @/hooks/useWorkspace.
   • Destructure { workspaceId, loading: workspaceLoading, error: workspaceError }.

3. Ensure safe fetch execution

   • Guard data loads: do not call APIs until workspaceId is available.
   • Add dependencies so effects re-run when workspaceId changes.

4. Add friendly UI states

   • While workspaceLoading: show "Loading workspace…"
   • If workspaceError or missing workspaceId: show a clear error card/message

5. Validate

   • Run npm run typecheck.
   • Run the smallest tests that exercise the changed pages or helper logic.