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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "houseplan-card",
-  "version": "1.29.0",
+  "version": "1.30.0",
   "description": "Interactive house plan Lovelace card for Home Assistant",
   "license": "MIT",
   "type": "module",