#83 UI: API Keys Management Page

Create API Keys management page. Component: api/ui/templates/components/admin_api_keys/ Files: - admin_api_keys.html - admin_api_keys.css - admin_api_keys.js URL: #/admin/api-keys Features: - Create API Key section: - Name input (required) - User selector (or self) - Permission checkboxes (select which permissions) - Expiration options - Create button - Key display modal (show ONCE only, never again) - API Keys table: - Columns: Name, Key Prefix (hw_live_xxx...), User, Permissions, Created, Expires, Last Used, Actions - Filter by user - Filter by status (active, expired, revoked) - Revoke button - Rotate button (revoke old, create new) - Key Detail Modal: - Full permission list - Usage statistics - Last 10 requests log - Revoke confirmation Visual: - Key prefix display (partial key for identification) - Permission pills/badges - Expiration countdown - Usage spark charts With ultra attention to details and correctness. Before closing: write comment summarizing implementation with screenshot.