Add API endpoint to delete private notes

[josephsellers]

Summary

Adds DELETE /api/v1/conversations/{cuuid}/messages/{uuid} for removing private notes via the API. Only messages with private=true can be deleted; the SQL WHERE clause ensures sent messages are protected. Returns 404 if the message doesn't exist or isn't private.

This is useful for API consumers that create private notes programmatically and need to clean them up (e.g. replacing an outdated note before adding a new one).

Changes

• cmd/messages_delete.go: New handler (handleDeleteMessage) with conversation access enforcement
• internal/conversation/message_delete.go: New DeleteMessage method on the conversation manager
• cmd/handlers.go: Route registration (DELETE, messages:write permission)
• internal/conversation/conversation.go: DeleteMessage prepared statement in query struct
• internal/conversation/queries.sql: delete-message query

Test plan

• Create a private note via POST /conversations/{uuid}/messages with private: true
• Delete it via DELETE /conversations/{cuuid}/messages/{uuid}
• Verify it returns success and the note is gone
• Attempt to delete a non-private (sent) message
• Verify it returns 404 (protected by SQL constraint)
• Attempt to delete a message from a conversation the agent doesn't have access to
• Verify it returns a permission error

[abhinavxd]

Thanks for the PR!

We should have a context menu option (right click on private note) to delete it that hits this API.

[josephsellers]

Added a context menu for private notes in the conversation view. Right-clicking a private note shows a "Delete note" option (with trash icon, destructive styling). Non-private messages are unaffected.

Changes:

• MessageBubble.vue: wraps bubble in ContextMenu, trigger disabled for non-private messages
• api/index.js: deleteMessage function
• stores/conversation.js: deleteMessage action (API call, cache removal, error toast)
• conversation-message-cache.js: removeMessage method
• i18n/en.json: conversation.deletePrivateNote key

[josephsellers]

P.S. Sorry for the big diff on MessageBubble.vue. I think the logic is sound, but the indentation changed making a 15 line change look massive.

[abhinavxd]

Hey, thanks for the PR! I will merge this as soon as I merge - #114

#114 PR adds the live chat widget, which required me to refactor and move many parts of the project. Since everything would need to be retested anyway, I ended up bundling in a lot of other fixes as well to avoid multiple rounds of QA.

[abhinavxd]

Hey there seems to be conflict due to recent live chat branch merge