feat(voice): unified mobile voice bar with gesture-isolated PTT row

Replace separate VoiceStatusChip + VoicePttButton with a single
CompactVoiceBar widget that combines both into a two-row layout:

- Control row (tap): status text, mute, deafen, settings chevron
- PTT row (hold): full-width hold-to-talk, shown only in PTT mode

Gesture isolation prevents mis-touch between rows: the control row
uses tap-only InkWell/IconButton while the PTT row uses a raw
Listener for pointer-down/up events.

Key changes:
- Add CompactVoiceBar widget with state-colored container (normal,
  muted, talk-power-blocked)
- Remove mute/deafen IconButtons from AppBar headerActions
- Restructure voice details sheet into primary section + collapsible
  ExpansionTiles (audio processing, PTT capability, debug)
- Optimistic state updates for mute/deafen to eliminate tap delay
- Instant PTT visual feedback (no AnimatedContainer fade)
- Constant geometry across all states (no layout shift on toggle)

apps/chanora_flutter/lib/main.dart

@@ -1126,14 +1126,18 @@ class _BetaHomeState extends State<_BetaHome> with WidgetsBindingObserver {
 
   Future<void> _toggleOutputMute() async {
     final next = !_outputMuted;
+    // Optimistic: flip the UI immediately.
+    setState(() {
+      _outputMuted = next;
+    });
     try {
       await rust.setOutputMuted(muted: next);
-      if (!mounted) return;
-      setState(() {
-        _outputMuted = next;
-      });
     } catch (e) {
       if (!mounted) return;
+      // Roll back on failure.
+      setState(() {
+        _outputMuted = !next;
+      });
       _showUiError('output mute', e);
     }
   }
@@ -1260,6 +1264,13 @@ class _BetaHomeState extends State<_BetaHome> with WidgetsBindingObserver {
       return;
     }
     final next = !_hardMute;
+    // Optimistic: flip the UI immediately so the icon responds
+    // before the two bridge calls round-trip through FFI.
+    setState(() {
+      _inputMuted = next;
+      _hardMute = next;
+      _hardMuteByPermission = false;
+    });
     try {
       // Hard-mute is two coordinated effects:
       //  * setHardMute  — local TransmitGate clamp; we stop sending
@@ -1272,14 +1283,13 @@ class _BetaHomeState extends State<_BetaHome> with WidgetsBindingObserver {
       // through. Drive them together.
       await rust.setHardMute(muted: next);
       await rust.setInputMuted(muted: next);
-      if (!mounted) return;
-      setState(() {
-        _inputMuted = next;
-        _hardMute = next;
-        _hardMuteByPermission = false;
-      });
     } catch (e) {
       if (!mounted) return;
+      // Roll back on failure.
+      setState(() {
+        _inputMuted = !next;
+        _hardMute = !next;
+      });
       _showUiError('hard mute', e);
     }
   }
@@ -2145,26 +2155,6 @@ class _BetaHomeState extends State<_BetaHome> with WidgetsBindingObserver {
     final theme = Theme.of(context);
 
     final headerActions = [
-      if (_serverReachable && _inChannel) ...[
-        IconButton(
-          tooltip: _hardMuteByTalkPower
-              ? 'Insufficient talk power to speak in this channel'
-              : l10n.voiceHardMuteLabel,
-          icon: Icon(_hardMute ? Icons.mic_off : Icons.mic),
-          isSelected: _hardMute,
-          selectedIcon: const Icon(Icons.mic_off),
-          color: _hardMute ? theme.colorScheme.error : null,
-          onPressed: _hardMuteByTalkPower ? null : _onToggleHardMute,
-        ),
-        IconButton(
-          tooltip: l10n.voiceOutputMuteLabel,
-          icon: Icon(_outputMuted ? Icons.headset_off : Icons.headset),
-          isSelected: _outputMuted,
-          selectedIcon: const Icon(Icons.headset_off),
-          color: _outputMuted ? theme.colorScheme.error : null,
-          onPressed: _toggleOutputMute,
-        ),
-      ],
       IconButton(
         tooltip: l10n.aboutAction,
         icon: const Icon(Icons.info_outline),
@@ -2449,7 +2439,8 @@ class _BetaHomeState extends State<_BetaHome> with WidgetsBindingObserver {
                         Expanded(child: snapshotView),
                         const SizedBox(height: 8),
                         permissionBanner,
-                        VoiceStatusChip(
+                        CompactVoiceBar(
+                          inChannel: _inChannel,
                           transmitMode: _transmitMode,
                           releaseTailMs: _releaseTailMs,
                           pttBoundKeyLabel: _pttBoundKeyLabel,
@@ -2457,19 +2448,15 @@ class _BetaHomeState extends State<_BetaHome> with WidgetsBindingObserver {
                           isTouchOnly: isTouchOnlyPttHost,
                           inputMuted: _hardMute,
                           outputMuted: _outputMuted,
+                          onToggleInputMute: _onToggleHardMute,
+                          onToggleOutputMute: _toggleOutputMute,
+                          onOpenDetails: () => _onOpenVoiceDetailsSheet(),
+                          onPttHeldChanged: _onOnscreenPttHeldChanged,
                           talkPower: ownClientState?.talkPower,
                           neededTalkPower: ownClientState?.neededTalkPower,
                           talkPowerGranted: ownClientState?.talkPowerGranted,
-                          onTap: () => _onOpenVoiceDetailsSheet(),
+                          hardMuteByTalkPower: _hardMuteByTalkPower,
                         ),
-                        if (_inChannel &&
-                            _transmitMode == rust.BridgeTransmitMode.ptt) ...[
-                          const SizedBox(height: 8),
-                          VoicePttButton(
-                            active: _audioStats?.pttActive ?? false,
-                            onHeldChanged: _onOnscreenPttHeldChanged,
-                          ),
-                        ],
                       ],
                     );
                   },

apps/chanora_flutter/lib/widgets/voice_compact.dart

@@ -1,11 +1,15 @@
-// Compact voice UI for narrow / mobile layouts (Plan E hybrid:
-// AppBar mutes + status chip with 2-line live readout + wide bottom-
-// anchored PTT button + modal sheet for non-essential controls).
+// Compact voice UI for narrow / mobile layouts.
 //
-// rc.8 follow-up: the AppBar gear icon was removed; the modal sheet
-// is now the **single** voice-controls surface on mobile. Mode +
-// release-tail are surfaced inline (radio buttons + slider) inside
-// the modal.
+// Two-zone voice bar pinned to the bottom:
+//   • Control row: status text + mute + deafen + settings chevron
+//   • PTT row:     full-width hold-to-talk (PTT mode only)
+// Both share a single container whose background colour reflects
+// the current voice state (normal / muted / talk-power-blocked).
+//
+// Gesture isolation: the control row uses tap-only InkWell /
+// IconButton; the PTT row uses a raw Listener for pointer-down /
+// pointer-up.  Because each row is a disjoint hit-test region, a
+// finger holding PTT cannot accidentally toggle mute or deafen.
 
 import 'dart:async' show Timer, unawaited;
 import 'dart:io' show Platform;
@@ -539,6 +543,8 @@ class _VoiceSheetBodyState extends State<_VoiceSheetBody> {
             Text(l10n.voiceSheetTitle, style: theme.textTheme.titleLarge),
             const SizedBox(height: 12),
 
+            // ── Primary section (always visible) ────────────────────
+
             // 1) Audio output route picker tile (mobile only).
             if (showRoutePicker) ...[
               const AudioOutputTile(),
@@ -574,7 +580,7 @@ class _VoiceSheetBodyState extends State<_VoiceSheetBody> {
               onTap: () => _setMode(rust.BridgeTransmitMode.voiceActivity),
             ),
 
-            // 3) Release-tail slider (PTT only).
+            // Release-tail slider (PTT only).
             if (isPtt) ...[
               const SizedBox(height: 8),
               Row(
@@ -624,7 +630,7 @@ class _VoiceSheetBodyState extends State<_VoiceSheetBody> {
             Divider(height: 1, color: theme.colorScheme.outlineVariant),
             const SizedBox(height: 12),
 
-            // 4) Level meter + live TX/RX stats.
+            // Level meter + live TX/RX stats.
             VoiceLevelMeter(active: levelActive),
             const SizedBox(height: 6),
             _StatsRow(
@@ -648,183 +654,227 @@ class _VoiceSheetBodyState extends State<_VoiceSheetBody> {
               ),
             ],
 
-            // Audio processing.
-            const SizedBox(height: 12),
-            Divider(height: 1, color: theme.colorScheme.outlineVariant),
             const SizedBox(height: 8),
-            Text(
-              'Audio processing',
-              style: theme.textTheme.labelLarge?.copyWith(
-                color: theme.colorScheme.onSurfaceVariant,
-              ),
-            ),
-            const SizedBox(height: 4),
 
-            // Android HW/SW selector.
-            if (Platform.isAndroid) ...[
-              const VoiceSubHeader('Processing backend'),
-              SegmentedButton<bool>(
-                style: voiceSegmentedButtonStyle(theme),
-                segments: androidProcessingSegments,
-                selected: {_audioProcessing.preferHardware},
-                onSelectionChanged: (s) {
-                  setState(() => _audioProcessing.preferHardware = s.first);
-                  _notifyAudioConfig();
-                },
-              ),
-              const SizedBox(height: 4),
-              Text(
-                _audioProcessing.preferHardware
-                    ? 'Hardware mode still keeps per-stage WebRTC fallback, so these controls remain effective.'
-                    : 'Software mode applies the full WebRTC APM stage set.',
-                style: theme.textTheme.bodySmall?.copyWith(
+            // ── Collapsible: Audio processing ───────────────────────
+            ExpansionTile(
+              initiallyExpanded: false,
+              shape: const Border(),
+              collapsedShape: const Border(),
+              tilePadding: const EdgeInsets.symmetric(horizontal: 0),
+              title: Text(
+                'Audio processing',
+                style: theme.textTheme.labelLarge?.copyWith(
                   color: theme.colorScheme.onSurfaceVariant,
                 ),
               ),
-            ],
+              children: [
+                _buildAudioProcessingSection(theme),
+              ],
+            ),
 
-            if (_isIos) ...[
-              Text(
-                'iOS uses Apple VoiceProcessingIO. WebRTC APM controls are '
-                'hidden here; only settings that still affect the shipping '
-                'iOS path are shown.',
-                style: theme.textTheme.bodySmall?.copyWith(
+            // ── Collapsible: PTT capability (PTT mode only) ─────────
+            if (isPtt)
+              ExpansionTile(
+                initiallyExpanded: false,
+                tilePadding: const EdgeInsets.symmetric(horizontal: 0),
+                shape: const Border(),
+                collapsedShape: const Border(),
+                title: Text(
+                  'PTT capability',
+                  style: theme.textTheme.labelLarge?.copyWith(
+                    color: theme.colorScheme.onSurfaceVariant,
+                  ),
+                ),
+                children: [
+                  PttCapabilityBadge(
+                    level: widget.pttLevel,
+                    backendId: widget.pttBackendId,
+                    boundInputClass: widget.pttBoundInputClass,
+                  ),
+                  const SizedBox(height: 8),
+                ],
+              ),
+
+            // ── Collapsible: Debug ──────────────────────────────────
+            ExpansionTile(
+              initiallyExpanded: false,
+              shape: const Border(),
+              collapsedShape: const Border(),
+              tilePadding: const EdgeInsets.symmetric(horizontal: 0),
+              title: Text(
+                'Debug',
+                style: theme.textTheme.labelLarge?.copyWith(
                   color: theme.colorScheme.onSurfaceVariant,
                 ),
               ),
-              const SizedBox(height: 4),
-            ],
-            if (!_isIos &&
-                (!Platform.isAndroid ||
-                    androidShowsNsControl(_audioProcessing)))
-              AudioProcessingToggleRow(
-                dense: true,
-                label: 'Noise suppression',
-                subtitle: 'Wiener filter',
-                value: _audioProcessing.nsEnabled,
-                onChanged: (v) {
-                  setState(() => _audioProcessing.nsEnabled = v);
-                  _notifyAudioConfig();
-                },
-              ),
-            if (!_isIos &&
-                (!Platform.isAndroid ||
-                    androidShowsAecControl(_audioProcessing)))
-              AudioProcessingToggleRow(
-                dense: true,
-                label: 'Echo cancellation',
-                subtitle: Platform.isAndroid
-                    ? (_audioProcessing.preferHardware
-                          ? 'Prefers device/OS effect; falls back to WebRTC AEC3'
-                          : 'WebRTC AEC3 · adaptive filter')
-                    : (_isMacOS
-                          ? 'Managed by platform VPIO'
-                          : 'WebRTC AEC3 · adaptive filter'),
-                value: _isMacOS ? true : _audioProcessing.aecEnabled,
-                onChanged: _isMacOS
-                    ? null
-                    : (v) {
-                        setState(() => _audioProcessing.aecEnabled = v);
-                        _notifyAudioConfig();
-                      },
-              ),
-            if (!_isIos &&
-                (!Platform.isAndroid ||
-                    androidShowsAgcControl(_audioProcessing)))
-              AudioProcessingToggleRow(
-                dense: true,
-                label: 'Auto gain control',
-                subtitle: 'AGC2 · -18 dBFS target',
-                value: _audioProcessing.agcEnabled,
-                onChanged: (v) {
-                  setState(() => _audioProcessing.agcEnabled = v);
-                  _notifyAudioConfig();
-                },
-              ),
-            if (!Platform.isAndroid || androidShowsHpfControl(_audioProcessing))
-              AudioProcessingToggleRow(
-                dense: true,
-                label: 'High-pass filter',
-                subtitle: '80 Hz · DC removal',
-                value: _audioProcessing.hpfEnabled,
-                onChanged: (v) {
-                  setState(() => _audioProcessing.hpfEnabled = v);
-                  _notifyAudioConfig();
-                },
-              ),
-            if (!_isIos &&
-                (!Platform.isAndroid ||
-                    androidShowsLimiterControl(_audioProcessing)))
-              AudioProcessingToggleRow(
-                dense: true,
-                label: 'Peak limiter',
-                subtitle: '-1 dBFS soft-knee · 2 ms look-ahead',
-                value: _audioProcessing.limiterEnabled,
-                onChanged: (v) {
-                  setState(() => _audioProcessing.limiterEnabled = v);
-                  _notifyAudioConfig();
-                },
-              ),
-
-            // VAD backend.
-            const SizedBox(height: 8),
-            Text(
-              'Voice activity detection (VAD)',
-              style: theme.textTheme.labelLarge?.copyWith(
-                color: theme.colorScheme.onSurfaceVariant,
-              ),
+              children: [
+                _buildDebugSection(theme),
+              ],
             ),
-            const SizedBox(height: 2),
-            SegmentedButton<rust.BridgeVadBackend>(
-              style: voiceSegmentedButtonStyle(theme),
-              segments: _isDesktopSileroVadHost
-                  ? desktopVadBackendSegments
-                  : vadBackendSegments,
-              selected: {_audioProcessing.vadBackend},
-              onSelectionChanged: (s) {
-                setState(() => _audioProcessing.vadBackend = s.first);
-                _notifyAudioConfig();
-              },
-            ),
-
-            // Debug.
-            const SizedBox(height: 8),
-            Text(
-              'Debug',
-              style: theme.textTheme.labelLarge?.copyWith(
-                color: theme.colorScheme.onSurfaceVariant,
-              ),
-            ),
-            const SizedBox(height: 2),
-            AudioProcessingToggleRow(
-              dense: true,
-              label: 'WAV dump',
-              subtitle: 'Record raw/processed mic to temp dir',
-              value: _audioProcessing.debugWavDump,
-              onChanged: (v) {
-                setState(() => _audioProcessing.debugWavDump = v);
-                _notifyAudioConfig();
-              },
-            ),
-
-            // 6) PTT capability badge. On iOS this must remain
-            // visible even though the resolved level is always
-            // `L0Focused`, because the P0 acceptance flow requires
-            // honest capability advertising with an explanation of
-            // the sandbox limitation.
-            if (isPtt) ...[
-              const SizedBox(height: 12),
-              PttCapabilityBadge(
-                level: widget.pttLevel,
-                backendId: widget.pttBackendId,
-                boundInputClass: widget.pttBoundInputClass,
-              ),
-            ],
           ],
         ),
       ),
     );
   }
+
+  // ── Audio processing section (inside ExpansionTile) ─────────────────
+
+  Widget _buildAudioProcessingSection(ThemeData theme) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        // Android HW/SW selector.
+        if (Platform.isAndroid) ...[
+          const VoiceSubHeader('Processing backend'),
+          SegmentedButton<bool>(
+            style: voiceSegmentedButtonStyle(theme),
+            segments: androidProcessingSegments,
+            selected: {_audioProcessing.preferHardware},
+            onSelectionChanged: (s) {
+              setState(() => _audioProcessing.preferHardware = s.first);
+              _notifyAudioConfig();
+            },
+          ),
+          const SizedBox(height: 4),
+          Text(
+            _audioProcessing.preferHardware
+                ? 'Hardware mode still keeps per-stage WebRTC fallback, so these controls remain effective.'
+                : 'Software mode applies the full WebRTC APM stage set.',
+            style: theme.textTheme.bodySmall?.copyWith(
+              color: theme.colorScheme.onSurfaceVariant,
+            ),
+          ),
+        ],
+
+        if (_isIos) ...[
+          Text(
+            'iOS uses Apple VoiceProcessingIO. WebRTC APM controls are '
+            'hidden here; only settings that still affect the shipping '
+            'iOS path are shown.',
+            style: theme.textTheme.bodySmall?.copyWith(
+              color: theme.colorScheme.onSurfaceVariant,
+            ),
+          ),
+          const SizedBox(height: 4),
+        ],
+        if (!_isIos &&
+            (!Platform.isAndroid ||
+                androidShowsNsControl(_audioProcessing)))
+          AudioProcessingToggleRow(
+            dense: true,
+            label: 'Noise suppression',
+            subtitle: 'Wiener filter',
+            value: _audioProcessing.nsEnabled,
+            onChanged: (v) {
+              setState(() => _audioProcessing.nsEnabled = v);
+              _notifyAudioConfig();
+            },
+          ),
+        if (!_isIos &&
+            (!Platform.isAndroid ||
+                androidShowsAecControl(_audioProcessing)))
+          AudioProcessingToggleRow(
+            dense: true,
+            label: 'Echo cancellation',
+            subtitle: Platform.isAndroid
+                ? (_audioProcessing.preferHardware
+                      ? 'Prefers device/OS effect; falls back to WebRTC AEC3'
+                      : 'WebRTC AEC3 · adaptive filter')
+                : (_isMacOS
+                      ? 'Managed by platform VPIO'
+                      : 'WebRTC AEC3 · adaptive filter'),
+            value: _isMacOS ? true : _audioProcessing.aecEnabled,
+            onChanged: _isMacOS
+                ? null
+                : (v) {
+                    setState(() => _audioProcessing.aecEnabled = v);
+                    _notifyAudioConfig();
+                  },
+          ),
+        if (!_isIos &&
+            (!Platform.isAndroid ||
+                androidShowsAgcControl(_audioProcessing)))
+          AudioProcessingToggleRow(
+            dense: true,
+            label: 'Auto gain control',
+            subtitle: 'AGC2 · -18 dBFS target',
+            value: _audioProcessing.agcEnabled,
+            onChanged: (v) {
+              setState(() => _audioProcessing.agcEnabled = v);
+              _notifyAudioConfig();
+            },
+          ),
+        if (!Platform.isAndroid || androidShowsHpfControl(_audioProcessing))
+          AudioProcessingToggleRow(
+            dense: true,
+            label: 'High-pass filter',
+            subtitle: '80 Hz · DC removal',
+            value: _audioProcessing.hpfEnabled,
+            onChanged: (v) {
+              setState(() => _audioProcessing.hpfEnabled = v);
+              _notifyAudioConfig();
+            },
+          ),
+        if (!_isIos &&
+            (!Platform.isAndroid ||
+                androidShowsLimiterControl(_audioProcessing)))
+          AudioProcessingToggleRow(
+            dense: true,
+            label: 'Peak limiter',
+            subtitle: '-1 dBFS soft-knee · 2 ms look-ahead',
+            value: _audioProcessing.limiterEnabled,
+            onChanged: (v) {
+              setState(() => _audioProcessing.limiterEnabled = v);
+              _notifyAudioConfig();
+            },
+          ),
+
+        // VAD backend.
+        const SizedBox(height: 8),
+        Text(
+          'Voice activity detection (VAD)',
+          style: theme.textTheme.labelLarge?.copyWith(
+            color: theme.colorScheme.onSurfaceVariant,
+          ),
+        ),
+        const SizedBox(height: 2),
+        SegmentedButton<rust.BridgeVadBackend>(
+          style: voiceSegmentedButtonStyle(theme),
+          segments: _isDesktopSileroVadHost
+              ? desktopVadBackendSegments
+              : vadBackendSegments,
+          selected: {_audioProcessing.vadBackend},
+          onSelectionChanged: (s) {
+            setState(() => _audioProcessing.vadBackend = s.first);
+            _notifyAudioConfig();
+          },
+        ),
+        const SizedBox(height: 8),
+      ],
+    );
+  }
+
+  // ── Debug section (inside ExpansionTile) ─────────────────────────────
+
+  Widget _buildDebugSection(ThemeData theme) {
+    return Column(
+      crossAxisAlignment: CrossAxisAlignment.stretch,
+      children: [
+        AudioProcessingToggleRow(
+          dense: true,
+          label: 'WAV dump',
+          subtitle: 'Record raw/processed mic to temp dir',
+          value: _audioProcessing.debugWavDump,
+          onChanged: (v) {
+            setState(() => _audioProcessing.debugWavDump = v);
+            _notifyAudioConfig();
+          },
+        ),
+        const SizedBox(height: 8),
+      ],
+    );
+  }
 }
 
 // ── Live TX/RX stats row ──────────────────────────────────────────────────
@@ -948,3 +998,424 @@ class _ModeRow extends StatelessWidget {
     );
   }
 }
+
+// ── Unified mobile voice bar ──────────────────────────────────────────────
+
+/// A unified bottom-anchored voice bar for compact / mobile layouts.
+///
+/// Combines the former [VoiceStatusChip] and [VoicePttButton] into one
+/// visual zone with two rows:
+///
+///   ┌──────────────────────────────────────────────┐
+///   │ 🟢 PTT · Connected           [🔇] [🎧] [▲] │  ← control row (tap)
+///   ├──────────────────────────────────────────────┤
+///   │           ════ hold to talk ════             │  ← PTT row (hold)
+///   └──────────────────────────────────────────────┘
+///
+/// The PTT row is shown only when [transmitMode] is PTT; for continuous
+/// or voice-activity modes the bar shrinks to the control row alone.
+///
+/// State colour is applied to the entire container:
+///   - normal:           `surfaceContainerHigh`
+///   - muted:            `errorContainer` (35 % alpha)
+///   - talk-power-block: amber (18 % alpha)
+class CompactVoiceBar extends StatelessWidget {
+  /// Construct a compact voice bar.
+  const CompactVoiceBar({
+    super.key,
+    required this.inChannel,
+    required this.transmitMode,
+    required this.releaseTailMs,
+    required this.pttBoundKeyLabel,
+    required this.audioStats,
+    required this.isTouchOnly,
+    required this.inputMuted,
+    required this.outputMuted,
+    required this.onToggleInputMute,
+    required this.onToggleOutputMute,
+    required this.onOpenDetails,
+    required this.onPttHeldChanged,
+    this.talkPower,
+    this.neededTalkPower,
+    this.talkPowerGranted,
+    this.hardMuteByTalkPower = false,
+  });
+
+  /// True when the client is inside a channel (gates PTT row visibility).
+  final bool inChannel;
+
+  /// Current transmit mode.
+  final rust.BridgeTransmitMode transmitMode;
+
+  /// Release-tail in milliseconds.
+  final int releaseTailMs;
+
+  /// Bound key label (empty on touch-only hosts).
+  final String pttBoundKeyLabel;
+
+  /// Current audio stats; null while audio engine not running.
+  final rust.BridgeAudioStats? audioStats;
+
+  /// True on iOS / iPadOS / Android.
+  final bool isTouchOnly;
+
+  /// True when local mic is muted.
+  final bool inputMuted;
+
+  /// True when local speaker is muted.
+  final bool outputMuted;
+
+  /// Toggle hard-mute on / off.
+  final VoidCallback onToggleInputMute;
+
+  /// Toggle output mute on / off.
+  final VoidCallback onToggleOutputMute;
+
+  /// Open the voice details modal sheet.
+  final VoidCallback onOpenDetails;
+
+  /// Called with `true` on finger-down, `false` on finger-up / cancel.
+  final ValueChanged<bool> onPttHeldChanged;
+
+  /// Own client's talk power.
+  final int? talkPower;
+
+  /// Talk power required to speak in current channel.
+  final int? neededTalkPower;
+
+  /// True when server granted talk power.
+  final bool? talkPowerGranted;
+
+  /// True when talk power prevents speaking.
+  final bool hardMuteByTalkPower;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final l10n = AppL10n.of(context);
+    final isPtt = transmitMode == rust.BridgeTransmitMode.ptt;
+    final pttActive = audioStats?.pttActive ?? false;
+
+    final summary = voiceStatusSummary(
+      l10n: l10n,
+      transmitMode: transmitMode,
+      releaseTailMs: releaseTailMs,
+      pttBoundKeyLabel: pttBoundKeyLabel,
+      isTouchOnly: isTouchOnly,
+      inputMuted: inputMuted,
+      outputMuted: outputMuted,
+      pttActive: pttActive,
+      talkPower: talkPower,
+      neededTalkPower: neededTalkPower,
+      talkPowerGranted: talkPowerGranted,
+    );
+
+    // Container colour based on voice state.
+    final containerColor = summary.talkPowerBlocked
+        ? Colors.amber.withValues(alpha: 0.18)
+        : summary.muted
+            ? theme.colorScheme.errorContainer.withValues(alpha: 0.35)
+            : theme.colorScheme.surfaceContainerHigh;
+
+    final borderColor = summary.talkPowerBlocked
+        ? Colors.amber.shade700
+        : summary.muted
+            ? theme.colorScheme.error
+            : theme.colorScheme.outlineVariant;
+
+    final borderWidth = 1.0;
+
+    return Semantics(
+      label: '${l10n.voiceSheetTitle}: ${summary.line1}, ${summary.line2}',
+      child: Material(
+        type: MaterialType.transparency,
+        child: Container(
+          decoration: BoxDecoration(
+            color: containerColor,
+            borderRadius: BorderRadius.circular(20),
+            border: Border.all(color: borderColor, width: borderWidth),
+          ),
+          clipBehavior: Clip.antiAlias,
+          child: AnimatedSize(
+            duration: const Duration(milliseconds: 180),
+            curve: Curves.easeOutCubic,
+            alignment: Alignment.bottomCenter,
+            child: Column(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                // ── Control row ──────────────────────────────────────
+                _ControlRow(
+                  summary: summary,
+                  inputMuted: inputMuted,
+                  outputMuted: outputMuted,
+                  hardMuteByTalkPower: hardMuteByTalkPower,
+                  onToggleInputMute: onToggleInputMute,
+                  onToggleOutputMute: onToggleOutputMute,
+                  onOpenDetails: onOpenDetails,
+                ),
+                // ── PTT row (in-channel + PTT mode only) ──────────────
+                if (isPtt && inChannel) ...[
+                  Divider(
+                    height: 1,
+                    thickness: 0.5,
+                    color: borderColor,
+                    indent: 12,
+                    endIndent: 12,
+                  ),
+                  _PttRow(
+                    active: pttActive,
+                    enabled: !hardMuteByTalkPower,
+                    onHeldChanged: onPttHeldChanged,
+                  ),
+                ],
+              ],
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+// ── Control row (tap-only zone) ───────────────────────────────────────────
+
+class _ControlRow extends StatelessWidget {
+  const _ControlRow({
+    required this.summary,
+    required this.inputMuted,
+    required this.outputMuted,
+    required this.hardMuteByTalkPower,
+    required this.onToggleInputMute,
+    required this.onToggleOutputMute,
+    required this.onOpenDetails,
+  });
+
+  final VoiceStatusSummary summary;
+  final bool inputMuted;
+  final bool outputMuted;
+  final bool hardMuteByTalkPower;
+  final VoidCallback onToggleInputMute;
+  final VoidCallback onToggleOutputMute;
+  final VoidCallback onOpenDetails;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+
+    return Padding(
+      padding: const EdgeInsets.symmetric(horizontal: 12, vertical: 10),
+      child: Row(
+        children: [
+          // Status dot.
+          Icon(
+            summary.micOn ? Icons.fiber_manual_record : Icons.fiber_manual_record_outlined,
+            size: 10,
+            color: summary.micOn ? theme.colorScheme.primary : theme.colorScheme.outline,
+          ),
+          const SizedBox(width: 8),
+
+          // Status text (tappable → open details).
+          Expanded(
+            child: Semantics(
+              button: true,
+              label: summary.line1,
+              child: InkWell(
+                onTap: onOpenDetails,
+                borderRadius: BorderRadius.circular(8),
+                child: Padding(
+                  padding: const EdgeInsets.symmetric(vertical: 2),
+                  child: Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    mainAxisSize: MainAxisSize.min,
+                    children: [
+                      Text(
+                        summary.line1,
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: theme.textTheme.bodyMedium?.copyWith(
+                          fontWeight: FontWeight.w500,
+                        ),
+                      ),
+                      Text(
+                        summary.line2,
+                        maxLines: 1,
+                        overflow: TextOverflow.ellipsis,
+                        style: theme.textTheme.bodySmall?.copyWith(
+                          color: theme.colorScheme.onSurfaceVariant,
+                        ),
+                      ),
+                    ],
+                  ),
+                ),
+              ),
+            ),
+          ),
+
+          const SizedBox(width: 4),
+
+          // Mute button.
+          _ToggleButton(
+            icon: inputMuted ? Icons.mic_off : Icons.mic,
+            isActive: inputMuted,
+            tooltip: 'Mute mic',
+            onPressed: hardMuteByTalkPower ? null : onToggleInputMute,
+          ),
+
+          // Deafen button.
+          _ToggleButton(
+            icon: outputMuted ? Icons.headset_off : Icons.headset,
+            isActive: outputMuted,
+            tooltip: 'Deafen',
+            onPressed: onToggleOutputMute,
+          ),
+
+          // Settings / expand chevron.
+          IconButton(
+            icon: Icon(Icons.expand_less, size: 20, color: theme.colorScheme.onSurfaceVariant),
+            tooltip: 'Voice settings',
+            onPressed: onOpenDetails,
+            visualDensity: VisualDensity.compact,
+            constraints: const BoxConstraints(minWidth: 40, minHeight: 40),
+            padding: EdgeInsets.zero,
+          ),
+        ],
+      ),
+    );
+  }
+}
+
+// ── Toggle button (mute / deafen) ─────────────────────────────────────────
+
+class _ToggleButton extends StatelessWidget {
+  const _ToggleButton({
+    required this.icon,
+    required this.isActive,
+    required this.tooltip,
+    required this.onPressed,
+  });
+
+  final IconData icon;
+  final bool isActive;
+  final String tooltip;
+  final VoidCallback? onPressed;
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    return IconButton(
+      icon: Icon(icon, size: 22),
+      tooltip: tooltip,
+      color: isActive ? theme.colorScheme.error : null,
+      onPressed: onPressed,
+      visualDensity: VisualDensity.compact,
+      constraints: const BoxConstraints(minWidth: 44, minHeight: 44),
+      padding: EdgeInsets.zero,
+    );
+  }
+}
+
+// ── PTT row (hold-only zone) ──────────────────────────────────────────────
+
+class _PttRow extends StatefulWidget {
+  const _PttRow({
+    required this.active,
+    required this.enabled,
+    required this.onHeldChanged,
+  });
+
+  /// True while the engine reports the gate open.
+  final bool active;
+
+  /// Whether the PTT button can be engaged.
+  final bool enabled;
+
+  /// Called with `true` on pointer-down, `false` on pointer-up / cancel.
+  final ValueChanged<bool> onHeldChanged;
+
+  @override
+  State<_PttRow> createState() => _PttRowState();
+}
+
+class _PttRowState extends State<_PttRow> {
+  int? _activePointer;
+  bool _held = false;
+
+  @override
+  void initState() {
+    super.initState();
+    prepareVoiceHaptics();
+  }
+
+  void _begin(PointerDownEvent event) {
+    if (!widget.enabled || _activePointer != null) return;
+    _activePointer = event.pointer;
+    _held = true;
+    widget.onHeldChanged(true);
+    playVoicePttHaptic(true);
+    setState(() {});
+  }
+
+  void _end(int pointer) {
+    if (_activePointer != pointer) return;
+    _activePointer = null;
+    _held = false;
+    widget.onHeldChanged(false);
+    playVoicePttHaptic(false);
+    setState(() {});
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final theme = Theme.of(context);
+    final l10n = AppL10n.of(context);
+    final activeNow = _held || widget.active;
+
+    return Semantics(
+      button: true,
+      liveRegion: true,
+      label: activeNow ? l10n.pttTransmitting : l10n.pttHoldToTalk,
+      hint: l10n.pttHoldToTalkSemanticsHint,
+      child: Listener(
+        behavior: HitTestBehavior.opaque,
+        onPointerDown: _begin,
+        onPointerUp: (e) => _end(e.pointer),
+        onPointerCancel: (e) => _end(e.pointer),
+        child: ExcludeSemantics(
+          child: Container(
+            padding: const EdgeInsets.symmetric(vertical: 16),
+            decoration: BoxDecoration(
+              color: activeNow
+                  ? theme.colorScheme.primary
+                  : Colors.transparent,
+            ),
+            child: Center(
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  Icon(
+                    activeNow ? Icons.mic : Icons.mic_none_outlined,
+                    size: 22,
+                    color: activeNow
+                        ? theme.colorScheme.onPrimary
+                        : theme.colorScheme.onSurfaceVariant,
+                  ),
+                  const SizedBox(width: 8),
+                  Text(
+                    activeNow ? l10n.voiceMicOn : l10n.voiceModePtt,
+                    style: theme.textTheme.bodyMedium?.copyWith(
+                      fontWeight: FontWeight.w600,
+                      letterSpacing: 0.3,
+                      color: activeNow
+                          ? theme.colorScheme.onPrimary
+                          : theme.colorScheme.onSurfaceVariant,
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}