build 63

• Fixed: Compose undo and redo now behave much more naturally, with native AppKit-style undo grouping in the prompt editor.

• Fixed: Drafts, cursor position, and undo history are now isolated per chat, so switching chats no longer mixes compose state together.

• Fixed: Prompt-library inserts and other programmatic text inserts now undo and redo like normal editor edits.

• Fixed: Attachment sending is more reliable in compose, including locked-send retry flows and chat switching with unsent attachments.

• Improved: Workflow, system prompt, and title prompt editors now save more safely, keep the sheet open on failure, and show clearer inline errors.

• Fixed: Local instant dictation now uses the correct OpenAI-compatible /v1 endpoints for Ollama and LM Studio.

• Improved: Reply-finished notifications now include a sound again.