fix(calls): the call-bar output menu uses the call frame's devices (#310)

deviceIds are hashed per frame/origin, so the ids the menu got from the
chat page's enumerateDevices() were unknown inside the call iframe: the
fork fell back to the default output while the menu showed a tick on
the chosen device. Handle io.lotus.audio_output_state (also silencing
the fork's "host did not ack" log) and build the menu from the fork's
list and effective selection; older forks fall back to the old list.

Fixes #310

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_017PCb59uY3UKqDqt7B6hzd5

src/app/features/call-status/AudioOutputButton.tsx

@@ -16,6 +16,7 @@ import {
   toRem,
 } from 'folds';
 import { CallEmbed } from '../../plugins/call';
+import { AUDIO_OUTPUT_STATE } from '../../plugins/call/CallControl';
 import { MobileTouchTarget } from '../../styles/mobile.css';
 import { stopPropagation } from '../../utils/keyboard';
 
@@ -39,6 +40,21 @@ export function AudioOutputButton({ embed, disabled }: { embed: CallEmbed; disab
   const [devices, setDevices] = useState<OutputDevice[]>([]);
   const [selected, setSelected] = useState<string | undefined>(embed.control.audioOutputId);
 
+  // [Gitea #310] Prefer the fork's list: its ids are the ones valid inside
+  // the call iframe. Older forks don't report one; fall back to our own.
+  const [forkDevices, setForkDevices] = useState(embed.control.audioOutputs);
+  useEffect(() => {
+    const onState = () => {
+      setForkDevices(embed.control.audioOutputs);
+      setSelected(embed.control.audioOutputId);
+    };
+    onState();
+    embed.control.on(AUDIO_OUTPUT_STATE, onState);
+    return () => {
+      embed.control.off(AUDIO_OUTPUT_STATE, onState);
+    };
+  }, [embed]);
+
   const refresh = useCallback(async () => {
     try {
       const all = await navigator.mediaDevices.enumerateDevices();
@@ -53,11 +69,13 @@ export function AudioOutputButton({ embed, disabled }: { embed: CallEmbed; disab
   }, []);
 
   useEffect(() => {
-    if (!anchor) return undefined;
+    if (!anchor || forkDevices) return undefined;
     refresh();
     navigator.mediaDevices.addEventListener('devicechange', refresh);
     return () => navigator.mediaDevices.removeEventListener('devicechange', refresh);
-  }, [anchor, refresh]);
+  }, [anchor, refresh, forkDevices]);
+
+  const shown = forkDevices ?? devices;
 
   const choose = (id: string) => {
     embed.control.setAudioOutput(id);
@@ -90,13 +108,14 @@ export function AudioOutputButton({ embed, disabled }: { embed: CallEmbed; disab
             aria-label="Audio output"
           >
             <Box direction="Column" gap="100" style={{ padding: config.space.S100 }}>
-              {devices.length === 0 && (
+              {shown.length === 0 && (
                 <Text size="T200" priority="300" style={{ padding: config.space.S200 }}>
                   No audio outputs found.
                 </Text>
               )}
-              {devices.map((d) => {
-                const isSelected = selected ? d.id === selected : d.id === 'default';
+              {shown.map((d) => {
+                const isSelected =
+                  selected !== undefined ? d.id === selected : d.id === 'default' || d.id === '';
                 return (
                   <MenuItem
                     key={d.id}