Finish settings TODO cleanup

CHANGELOG.md

@@ -6,6 +6,21 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
+### Changed
+- Auto-summarization settings now save as soon as a changed row is
+  applied, including cadence/provider/toggle changes and model edits,
+  without requiring a separate save step.
+- Auto-summarization setting rows now visually separate grey labels
+  from regular-colour values.
+- The active-thread summary in the tab bar is now constrained to the
+  active tab's width instead of spanning the whole top row.
+- Sidebar summary text now wraps from the full summary text instead of
+  using an ellipsized single-line value.
+
+### Fixed
+- Removed the redundant "Back to Settings" row from the
+  Agents / Auto-summarization settings screen.
+
 ## [0.0.6] - 2026-05-15
 
 ### Changed