feat(#553): animate reaction WS event (ily / <3 / good bot → hearts)

app/src/main/java/com/m57/hermescontrol/data/ws/EventParser.kt

@@ -126,6 +126,11 @@ object EventParser {
                 WsEvent.SessionUpdated(payload)
             }
 
+            "reaction" -> {
+                val kind = payload?.get("kind") as? String ?: ""
+                WsEvent.ReactionEvent(kind)
+            }
+
             "approval.request" -> {
                 val command = payload?.get("command") as? String
                 val description = payload?.get("description") as? String

app/src/main/java/com/m57/hermescontrol/data/ws/WsEvent.kt

@@ -152,6 +152,17 @@ sealed class WsEvent {
         val data: Map<String, Any?>?,
     ) : WsEvent()
 
+    // ── Reaction event ────────────────────────────────────────────────────
+
+    /**
+     * Backend emitted an affection reaction (ily / <3 / good bot).
+     * Payload: `{ "kind": "<str>" }`. Purely cosmetic — play a hearts
+     * animation in the chat UI; no persistence needed.
+     */
+    data class ReactionEvent(
+        val kind: String = "",
+    ) : WsEvent()
+
     // ── Fallback ─────────────────────────────────────────────────────────
 
     data class Unknown(