chore: initial baseline before refactoring

Initial snapshot of Home Assistant config (HAOS 2026.4.4)
prior to dashboard restructuring and helper YAML migration.

Pre-commit cleanup applied:
- Removed blueprints/switch_manager/ (9.4 MB stale, component already gone)
- Removed .storage/switch_manager
- Removed home-assistant.log.{1,old,fault}
- Removed zigbee2mqtt/configuration_backup_v{1..4}.yaml
- Removed zigbee2mqtt/database.db.tmp.2024-09-27 (1.5y old)
- Created empty themes/ to satisfy configuration.yaml include

.gitignore uses allowlist strategy for .storage/ to keep
all tokens, keys, and PINs out of version control.

.storage/core.floor_registry

@@ -0,0 +1,27 @@
+{
+  "version": 1,
+  "minor_version": 3,
+  "key": "core.floor_registry",
+  "data": {
+    "floors": [
+      {
+        "aliases": [],
+        "floor_id": "erdgeschoss",
+        "icon": null,
+        "level": 0,
+        "name": "Erdgeschoss",
+        "created_at": "2024-09-14T09:36:39.934040+00:00",
+        "modified_at": "2024-09-14T09:36:39.934045+00:00"
+      },
+      {
+        "aliases": [],
+        "floor_id": "aussen",
+        "icon": "hue:room-outdoors",
+        "level": null,
+        "name": "Außen",
+        "created_at": "2025-08-05T05:46:07.342525+00:00",
+        "modified_at": "2025-08-05T05:46:07.342526+00:00"
+      }
+    ]
+  }
+}