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/CallControls.tsx

@@ -29,7 +29,7 @@ import {
   SoundButton,
   VideoButton,
 } from './Controls';
-import { CallEmbed, useCallControlState } from '../../plugins/call';
+import { CallEmbed, useCallControlState, useCallMicLevel } from '../../plugins/call';
 import { useSetting } from '../../state/hooks/settings';
 import { settingsAtom } from '../../state/settings';
 import { callEmbedAtom } from '../../state/callEmbed';
@@ -85,6 +85,7 @@ export function CallControls({ callEmbed }: CallControlsProps) {
 
   const { microphone, video, sound, screenshare, spotlight, screenshareAudioMuted } =
     useCallControlState(callEmbed.control);
+  const micLevel = useCallMicLevel(callEmbed);
 
   const [cords, setCords] = useState<RectCords>();
   const [shareConfirm, setShareConfirm] = useState(false);
@@ -200,7 +201,11 @@ export function CallControls({ callEmbed }: CallControlsProps) {
       >
         <Box alignItems="Center" gap="Inherit" grow="Yes" direction={compact ? 'Column' : 'Row'}>
           <Box shrink="No" alignItems="Inherit" justifyContent="Inherit" gap="200">
-            <MicrophoneButton enabled={microphone} onToggle={handleMicrophoneToggle} />
+            <MicrophoneButton
+              enabled={microphone}
+              onToggle={handleMicrophoneToggle}
+              level={micLevel}
+            />
             <SoundButton enabled={sound} onToggle={() => callEmbed.control.toggleSound()} />
           </Box>
           {!compact && showVideoGroup && <ControlDivider />}

src/app/features/call/Controls.tsx

@@ -1,6 +1,7 @@
 import React from 'react';
 import { Icon, IconButton, Icons, Line, Text, Tooltip, TooltipProvider } from 'folds';
 import { useAtom } from 'jotai';
+import { MicLevelBars } from './MicLevelBars';
 import * as css from './styles.css';
 import { MobileTouchTarget } from '../../styles/mobile.css';
 import { callChatAtom } from '../../state/callEmbed';
@@ -15,8 +16,10 @@ export function ControlDivider() {
 type MicrophoneButtonProps = {
   enabled: boolean;
   onToggle: () => Promise<unknown>;
+  /** [Gitea #146] Your input level, 0–3 bars; shown only while unmuted. */
+  level?: number;
 };
-export function MicrophoneButton({ enabled, onToggle }: MicrophoneButtonProps) {
+export function MicrophoneButton({ enabled, onToggle, level = 0 }: MicrophoneButtonProps) {
   const [micState, toggleMic] = useAsyncCallback(onToggle);
   const loading = micState.status === AsyncStatus.Loading;
 
@@ -43,7 +46,10 @@ export function MicrophoneButton({ enabled, onToggle }: MicrophoneButtonProps) {
           outlined
           disabled={loading}
         >
-          <Icon size="400" src={enabled ? Icons.Mic : Icons.MicMute} filled={!enabled} />
+          <span style={{ position: 'relative', display: 'inline-flex' }}>
+            <Icon size="400" src={enabled ? Icons.Mic : Icons.MicMute} filled={!enabled} />
+            {enabled && <MicLevelBars level={level} />}
+          </span>
         </IconButton>
       )}
     </TooltipProvider>

src/app/features/call/MicLevelBars.tsx

@@ -0,0 +1,45 @@
+import React from 'react';
+import { color } from 'folds';
+
+type MicLevelBarsProps = {
+  /** 0–3; nothing is drawn at 0. */
+  level: number;
+};
+
+const HEIGHTS = [3, 5, 7];
+
+/**
+ * [Gitea #146] Three small bars in the corner of the mic button showing your
+ * own input level while unmuted, so you can see the mic is actually picking
+ * you up. Decorative: the button's label already says whether it's on.
+ */
+export function MicLevelBars({ level }: MicLevelBarsProps) {
+  if (level <= 0) return null;
+  return (
+    <span
+      aria-hidden
+      data-mic-level={level}
+      style={{
+        position: 'absolute',
+        right: 1,
+        bottom: 1,
+        display: 'flex',
+        alignItems: 'flex-end',
+        gap: 1,
+        pointerEvents: 'none',
+      }}
+    >
+      {HEIGHTS.map((h, i) => (
+        <span
+          key={h}
+          style={{
+            width: 2,
+            height: h,
+            borderRadius: 1,
+            background: i < level ? color.Success.Main : 'transparent',
+          }}
+        />
+      ))}
+    </span>
+  );
+}