* feat: Add read-only access support for Prompts
- Backend: Add write_access field to PromptAccessResponse
- Backend: Update /prompts/list to return prompts with write_access
- Frontend: Display Read Only badge in Prompts list
- Frontend: Disable inputs and save button when no write access
* feat: Add read-only visual indicators for Prompts workspace
* fix: Return write_access from getPromptByCommand endpoint
- Backend returns write_access directly in response
- Frontend extracts write_access from getPromptByCommand response
- Remove inefficient getPromptList call in edit page
* fix: Align Read Only badge to right in Prompts.svelte
- Title and command stay on left
- Badge pushed to right by justify-between
* fix: Use PromptAccessResponse in get_prompt_by_command endpoint
fix: Use PromptAccessResponse in get_prompt_by_command endpoint
- Return PromptAccessResponse Pydantic model instead of raw dict
- Properly type the response with response_model
Add null check after Chats.get_chat_by_id() in both admin and user code paths. When chat doesn't exist, now raises HTTP 404 instead of crashing with AttributeError when accessing chat.meta.
Add null check after Files.get_file_by_id() before accessing file.hash. Raises HTTP 404 instead of crashing with AttributeError when file doesn't exist.
Add null checks for ui settings in update_user_settings_by_session_user() and for user in get_notes(). Prevents AttributeError when ui dict is None or when note's user has been deleted.
Fix implicit None returns in get_model_by_id, get_knowledge_by_id, get_tools_by_id, and get_prompt_by_command. Now properly returns 401 for access denied and 404 for not found instead of silently returning None.
