release v2.3.1

Patch release: ticket/decision sidebars load on first open (T-352), plus
the KWin frameless-chrome map fix (T-351) and the transient pql-failure
retry (T-350) that landed since 2.3.0.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

assets/licenses.yaml

@@ -39,7 +39,7 @@ self:
   # Auto-synced from pubspec.yaml `version:` by `make gen-build-info`
   # (runs implicitly on every build/run/test). Don't hand-edit; bump
   # pubspec instead.
-  version: "2.3.0"
+  version: "2.3.1"
   homepage: https://github.com/postmeridiem/clide
   license: MIT
   license_file: assets/LICENSE