Fix sidebar repaint and command restart navigation

CHANGELOG.md

@@ -13,6 +13,8 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   from `git describe`; the release workflow injects the pushed tag).
   Commit and date come from the Go toolchain's embedded VCS info, so
   nothing has to be bumped by hand.
+- Ctrl+R restarts the focused command process from the Processes
+  sidebar, including command entries that have already exited.
 
 ### Changed
 - CLI flag parsing switched from Go's stdlib `flag` to `spf13/pflag`.
@@ -21,6 +23,14 @@ loosely follows [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
   — single-hyphen long flags like `-project` are rejected. Help output
   renders the canonical `--flag` form.
 
+### Fixed
+- Plain line-feed scrolling at the bottom of a child pane now invalidates
+  and repaints the sidebar, so long agent output can no longer drag the
+  sidebar border and labels out of view while the chrome cache stays warm.
+- Exited command processes in the top Processes section are now reachable
+  with Ctrl+W/S navigation, so a dead shell entry can be focused and
+  restarted instead of becoming a visible but unreachable row.
+
 ## [0.0.1] - 2026-05-14
 
 ### Fixed