feat(call): mic level meter on the mute button (#146)

While unmuted, the microphone button (call view and the bottom call bar)
shows three small green bars in the icon's corner driven by the fork's
io.lotus.mic_level (element-call v0.25.0-lotus.16), so you can see the mic is
actually picking you up. Nothing is drawn while muted or silent; the button's
label is unchanged (the bars are decorative).

Your own name no longer appears in the "… is speaking" line: that is now for
everyone else, and your voice is on the meter. Avatar speaking rings still
include you, and the "You're muted" talking-while-muted notice is unchanged.

Verified in a local call with a fake-tone mic: data-mic-level cycles 3/2/1
with the tone on both buttons, disappears on mute and returns on unmute; the
status line reads "bob is speaking..." only.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01PPmy3tPq869XDW4njjVaKA

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

@@ -1,4 +1,4 @@
-import React from 'react';
+import React, { useMemo } from 'react';
 import { Box, Spinner, Text, color } from 'folds';
 import { useAtomValue } from 'jotai';
 import classNames from 'classnames';
@@ -14,6 +14,7 @@ import { StatusDivider } from './components';
 import { CallEmbed } from '../../plugins/call/CallEmbed';
 import { useCallJoined } from '../../hooks/useCallEmbed';
 import { useCallSpeakers } from '../../hooks/useCallSpeakers';
+import { useMatrixClient } from '../../hooks/useMatrixClient';
 import { MemberSpeaking } from './MemberSpeaking';
 import { clockSkewAtom } from '../../state/clockSkew';
 import { describeSkewVsServer } from '../../utils/clockSkew';
@@ -29,6 +30,14 @@ export function CallStatus({ callEmbed }: CallStatusProps) {
   const screenSize = useScreenSize();
   const callJoined = useCallJoined(callEmbed);
   const speakers = useCallSpeakers(callEmbed);
+  // [Gitea #146] Your own voice is on the mic button's level meter; the
+  // "… is speaking" line is for everyone else. (Avatar rings still include you.)
+  const mx = useMatrixClient();
+  const myUserId = mx.getUserId();
+  const otherSpeakers = useMemo(
+    () => new Set([...speakers].filter((id) => id !== myUserId)),
+    [speakers, myUserId],
+  );
   // [Gitea #158] Same warning as the top banner, where the user is looking during a call.
   const clockSkew = useAtomValue(clockSkewAtom);
 
@@ -69,11 +78,11 @@ export function CallStatus({ callEmbed }: CallStatusProps) {
                   </Text>
                 </>
               )}
-              {speakers.size > 0 && (
+              {otherSpeakers.size > 0 && (
                 <>
                   <StatusDivider />
                   <span data-spacing-node />
-                  <MemberSpeaking room={room} speakers={speakers} />
+                  <MemberSpeaking room={room} speakers={otherSpeakers} />
                 </>
               )}
             </>