Share one user form, add user photos and Revoke, confirm every form

- Settings > Users uses the people UserForm (useFormInit) instead of its
  own copy; it saves in one request through users/save-user, which now
  takes an optional profile photo (setUserProfileImage)
- Revoke action on user rows adds the revoked type, as the edit form would
- Every admin form asks for confirmation before it saves

Co-Authored-By: Claude Opus 5.5 <[email protected]>

src/pages/admin/workspaces/[workspace_id]/(partials)/workspace-bot-modal.tsx

@@ -28,6 +28,7 @@ export default function WorkspaceBotModal({ workspace_id, workspace_name, bot, o
 
     const submit = async () => {
         if (loading) return;
+        if (!window.confirm(`Save ${bot.name || "this bot"}'s instructions and memory here?`)) return;
 
         setLoading(true);
         setError(undefined);

src/pages/admin/workspaces/[workspace_id]/(partials)/workspace-details-group.tsx

@@ -34,6 +34,7 @@ export default function WorkspaceDetailsGroup({ workspace, onSaved }: Props) {
 
     const submit = async () => {
         if (!dirty || loading) return;
+        if (!window.confirm(`Save ${name || "this workspace"}?`)) return;
 
         setLoading(true);
         setStatus(undefined);