fix: resync voice state after LiveKit reconnect

src/app/components/VoiceWidget.svelte

@@ -44,7 +44,7 @@
     voiceMicMuted,
     voiceState,
   } from "@app/call/stores"
-  import {cancelJoinVoiceRoom, leaveVoiceRoom, toggleMute} from "@app/call/voice"
+  import {cancelJoinVoiceRoom, joinVoiceRoom, leaveVoiceRoom, toggleMute} from "@app/call/voice"
 
   const {relay, h} = $derived($page.params)
   const url = $derived(relay ? decodeRelay(relay) : undefined)
@@ -86,6 +86,11 @@
     pushModal(VoiceRoomJoinDialog, {url: targetRoom.url, h: targetRoom.h})
   }
 
+  const onReconnect = () => {
+    if (!targetRoom) return
+    void joinVoiceRoom(targetRoom.url, targetRoom.h)
+  }
+
   const goToRoom = () => {
     if (!targetRoom) return
     const path = makeRoomPath(targetRoom.url, targetRoom.h)
@@ -237,6 +242,13 @@
           onclick={leaveVoiceRoom}>
           <Icon icon={PhoneRounded} size={4} />
         </Button>
+      {:else if $currentVoiceRoom}
+        <Button
+          data-tip="Reconnect"
+          class="center tooltip tooltip-top btn btn-sm btn-square btn-success"
+          onclick={onReconnect}>
+          <Icon icon={PhoneCallingRounded} size={4} />
+        </Button>
       {:else}
         <Button
           data-tip="Join Voice"