feat v1.30.0: explicit Unlock/Lock action in the opening info card

- View-mode door/window info card gets an Unlock (red) / Lock button when a
  lock entity is bound and available; disabled while locking/unlocking,
  hidden when unavailable
- plan-icon taps still never toggle locks (hard block untouched);
  smoke_lock_action.mjs covers the full matrix incl. the block
- TESTING.md, CHANGELOG, UX-MODES same-commit

custom_components/houseplan/const.py

@@ -11,7 +11,7 @@ PLANS_DIR = "houseplan/plans"  # relative to the HA configuration directory
 FILES_URL = "/houseplan_files/files"
 FILES_DIR = "houseplan/files"
 CONF_ADMIN_ONLY = "admin_only"
-VERSION = "1.29.0"
+VERSION = "1.30.0"
 
 DEFAULT_CONFIG: dict = {
     "spaces": [],