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.

blueprints/template/homeassistant/inverted_binary_sensor.yaml

@@ -0,0 +1,27 @@
+blueprint:
+  name: Invert a binary sensor
+  description: Creates a binary_sensor which holds the inverted value of a reference binary_sensor
+  domain: template
+  source_url: https://github.com/home-assistant/core/blob/dev/homeassistant/components/template/blueprints/inverted_binary_sensor.yaml
+  input:
+    reference_entity:
+      name: Binary sensor to be inverted
+      description: The binary_sensor which needs to have its value inverted
+      selector:
+        entity:
+          domain: binary_sensor
+variables:
+  reference_entity: !input reference_entity
+binary_sensor:
+  state: >
+    {% if states(reference_entity) == 'on' %}
+      off
+    {% elif states(reference_entity) == 'off' %}
+      on
+    {% else %}
+      {{ states(reference_entity) }}
+    {% endif %}
+  # delay_on: not_used in this example
+  # delay_off: not_used in this example
+  # auto_off: not_used in this example
+  availability: "{{ states(reference_entity) not in ('unknown', 'unavailable') }}"