Merge origin/main into claude/fm6124dj-panel-compat-1b5e8a

Brings in #589. The only conflict was CHANGELOG.md, where both sides added
Unreleased entries; all of them are kept.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

CHANGELOG.md

@@ -77,6 +77,13 @@ Web interface:
   the Display form offers only row address types 0 and 2 on a Pi 5. The rule
   lives in `src/pi5_matrix_support.py` and must be re-checked when the
   submodule is bumped.
+- The Plugin Config Warning no longer lists core settings as plugins that are
+  "in config but not installed" (seen as `auto_update` on 3.4.0, where the
+  advice would have deleted the weekly-update setting). Core top-level config
+  keys now live in one list, `src/core_config_keys.py`, which reconciliation
+  uses and tests pin to `config.template.json` and the settings save endpoint.
+  A stored warning is also dropped once its entry is no longer a plugin in
+  config, so an old verdict clears without a restart.
 - **Check & Update All** no longer sends installed Starlark apps
   (`starlark:<app_id>` entries in `/plugins/installed`) to the plugin updater,
   which answered each with a 500 "plugin not found". `POST /plugins/update`