Enhance /notify with custom emote, color, animation, sound

- /notify now accepts optional: emote, color, animation, sound
- Backend passes custom properties to status response
- Frontend handles custom sounds (chime, alert, success, etc.)
- Added new sound effects: chime, alert, success
- Updated documentation with full notify options
- Added HA automation examples for doorbell and timer

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -109,7 +109,15 @@ rest_command:
     url: "http://YOUR_SERVER:5100/notify"
     method: POST
     content_type: "application/json"
-    payload: '{"message": "{{ message }}", "duration": {{ duration | default(5) }}}'
+    payload: >
+      {
+        "message": "{{ message | default('') }}",
+        "duration": {{ duration | default(5) }},
+        "emote": "{{ emote | default('') }}",
+        "color": "{{ color | default('') }}",
+        "animation": "{{ animation | default('') }}",
+        "sound": "{{ sound | default('') }}"
+      }
 
   kao_sleep:
     url: "http://YOUR_SERVER:5100/sleep"
@@ -134,6 +142,21 @@ automation:
       data:
         message: "Someone at the door"
         duration: 10
+        emote: "( °o°)"
+        color: "#FF9900"
+        sound: "chime"
+
+  - alias: "Timer Complete"
+    trigger:
+      platform: event
+      event_type: timer.finished
+    action:
+      service: rest_command.kao_notify
+      data:
+        message: "Timer done!"
+        emote: "\\(^o^)/"
+        animation: "celebrating"
+        sound: "success"
 
   - alias: "Kao Sleep at Bedtime"
     trigger:
@@ -150,6 +173,12 @@ automation:
       service: rest_command.kao_wake
 ```
 
+**Notify options:**
+- `emote`: Any ASCII emote (e.g., `( °o°)`, `\\(^o^)/`)
+- `color`: Hex color (e.g., `#FF9900`)
+- `animation`: `breathing`, `shaking`, `popping`, `celebrating`, `floating`, `bouncing`, `swaying`
+- `sound`: `chime`, `alert`, `warning`, `critical`, `success`, `notify`, `none`
+
 ## API Reference
 
 | Endpoint  | Method | Description                                      |