Save Favorite Messages (Prompt Templates)

[eiseleMichael]

This adds a way to mark a user message as favorite. When a user has at least 1 favorite message and favorites are enabled in the config (default is False) then a new star icon allows to select favorite messages that are used as prompt templates.
The Step.metadata is used to store this information.

• Translations are added
• All datalayer implementations are adjusted
• Config to enable/disable this feature is added (default false)

---

Summary by cubic

Add “Favorite Messages” so users can star messages and reuse them as prompt templates from the composer. The feature is behind a config flag and works across supported data layers.

• New Features

  • Config: features.favorites flag (default false).
  • Backend: store favorites in Step.metadata.favorite; new socket events message_favorite and fetch_favorites; emitter sends set_favorites.
  • Data layer support: get_favorite_steps for SQLAlchemy, Chainlit DB, and DynamoDB; LiteralAI returns empty.
  • Frontend: star toggle on user messages; new FavoriteButton in the composer to insert a favorite; client state and translations added; unit tests for the button.

• Bug Fixes

  • Frontend: tooltip on FavoriteButton now closes after selecting a favorite.

^{Written for commit f8cf94f. Summary will update automatically on new commits.}

[cubic-dev-ai]

3 issues found across 36 files

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="backend/chainlit/socket.py">

<violation number="1" location="backend/chainlit/socket.py:326">
P2: The `# pyright: ignore [reportOptionalCall]` comment is misplaced. To be consistent with other handlers in this file and to actually suppress the warning on the `sio.on` call, the comment should be on the decorator line, not the function definition.</violation>
</file>

<file name="backend/chainlit/data/sql_alchemy.py">

<violation number="1" location="backend/chainlit/data/sql_alchemy.py:841">
P2: Inconsistent `showInput` handling compared to `get_all_user_threads`. This could expose input data that should be hidden. Apply the same conditional logic used elsewhere in this file.</violation>
</file>

<file name="backend/chainlit/data/dynamodb.py">

<violation number="1" location="backend/chainlit/data/dynamodb.py:632">
P2: `strip(&quot;THREAD#&quot;)` removes any character from the set {&#39;T&#39;,&#39;H&#39;,&#39;R&#39;,&#39;E&#39;,&#39;A&#39;,&#39;D&#39;,&#39;#&#39;} from both ends, not the prefix substring. If a thread ID happens to end with any of these characters, it would be incorrectly truncated. Use `removeprefix(&quot;THREAD#&quot;)` instead for correct prefix removal.</violation>
</file>

_{Reply to cubic to teach it or ask questions. Re-run a review with @cubic-dev-ai review this PR}

[github-actions]

This PR is stale because it has been open for 14 days with no activity.