## What changed
- Generate a title suggestion from the latest substantive user and assistant messages when the TUI `/rename` prompt opens.
- Prefill the prompt with the result while keeping it editable and preserving any text the user enters before generation finishes.
- Bound and escape the conversation context, omit commentary and IDE context, and correlate responses with the active thread and prompt so stale suggestions are ignored.
## Testing
- Cover conversation selection and prompt construction, generated-title delivery through the embedded app server, loading and prefilled prompt states, stale responses, and preservation of manual edits.
GitOrigin-RevId: 1e7f1d5d4f6503ff9da0548388f610c446c130ca
## What changed
- Ignore `thread/started` notifications for ephemeral threads whose feature source is `system`, preventing hidden helper threads from entering TUI thread routing or refreshing the agents overview.
- Continue routing persisted system threads normally.
## Testing
- Add coverage for hidden and persisted system-thread notifications in the agents overview.
- Add generated-title normalization cases for wrapping quotes, trailing punctuation, and meaningful leading punctuation.
GitOrigin-RevId: e1ea48502b4f9aa7d5a187c7407df69c55abe2a9
## What changed
- Give unnamed TUI threads an immediate provisional title from the first user message, then replace it asynchronously with a normalized generated title.
- Preserve manual renames by applying a generated title only while the provisional title is still current, and keep automatic rename notifications out of the transcript.
- Run title generation in a bounded ephemeral structured request that preserves custom permission profiles, otherwise uses read-only access, and disables tools and MCP servers.
## Testing
- Cover prompt and response bounds, Unicode-safe truncation, title normalization, manual-rename races, silent automatic updates, permission preservation, and structured-response failures.
GitOrigin-RevId: 7ed73522f4f6c65a005f65f3a903974d8419e312