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.

esphome/archive/esp32-bluetooth-proxy-0951c0.yaml

@@ -0,0 +1,17 @@
+substitutions:
+  name: esp32-bluetooth-proxy-0951c0
+  friendly_name: Bluetooth Proxy Küche
+packages:
+  esphome.bluetooth-proxy: github://esphome/bluetooth-proxies/esp32-generic/esp32-generic.yaml@main
+esphome:
+  name: ${name}
+  name_add_mac_suffix: false
+  friendly_name: ${friendly_name}
+api:
+  encryption:
+    key: tCgIpe235uTVcMc/je7gVaUud7xStoBXLfr28XPCR7U=
+
+
+wifi:
+  ssid: !secret wifi_ssid
+  password: !secret wifi_password