feat(agent): add voice input capability and standardize tool naming

- Add voice recording with transcribe endpoint (ASR) for multimodal input
- Android: add RECORD_AUDIO and INTERNET permissions
- Refactor tool naming: frontend tools use 'front.' prefix, backend tools use 'back.'
- Migrate calendar tools: create_calendar_event -> back.mutate/list/delete events
- Add calendar_event_list.v1 and calendar_operation.v1 UI card types
- Update all Flutter and Python tests to match new tool naming conventions
- Add record package dependency for voice recording

apps/lib/features/chat/ui/widgets/ui_schema_renderer.dart

@@ -4,14 +4,19 @@ import '../../data/models/tool_result.dart';
 
 /// 卡片类型常量
 const _calendarCardType = 'calendar_card.v1';
+const _calendarListType = 'calendar_event_list.v1';
+const _calendarOperationType = 'calendar_operation.v1';
 const _errorCardType = 'error_card.v1';
 const _aiGeneratedSource = 'ai_generated';
+const _agentGeneratedSource = 'agent_generated';
 const _primaryActionType = 'primary';
 
 class UiSchemaRenderer {
   static Widget render(UiCard card) {
     return switch (card.cardType) {
       _calendarCardType => _renderCalendarCard(card),
+      _calendarListType => _renderCalendarList(card),
+      _calendarOperationType => _renderCalendarOperation(card),
       _errorCardType => _renderErrorCard(card),
       _ => _renderUnknownCard(card),
     };
@@ -22,7 +27,9 @@ class UiSchemaRenderer {
     final color = data.color != null
         ? Color(int.parse(data.color!.replaceFirst('#', '0xFF')))
         : AppColors.blue500;
-    final isAiGenerated = data.sourceType == _aiGeneratedSource;
+    final isAiGenerated =
+        data.sourceType == _aiGeneratedSource ||
+        data.sourceType == _agentGeneratedSource;
 
     return Container(
       decoration: BoxDecoration(
@@ -152,6 +159,103 @@ class UiSchemaRenderer {
     );
   }
 
+  static Widget _renderCalendarList(UiCard card) {
+    final rawItems = card.data['items'];
+    final items = rawItems is List ? rawItems : const [];
+    final paginationRaw = card.data['pagination'];
+    final pagination = paginationRaw is Map<String, dynamic>
+        ? paginationRaw
+        : const <String, dynamic>{};
+    final page = pagination['page'];
+    final total = pagination['total'];
+
+    return Container(
+      padding: EdgeInsets.all(AppSpacing.lg),
+      decoration: BoxDecoration(
+        color: AppColors.messageCardBg,
+        borderRadius: BorderRadius.circular(AppRadius.lg),
+        border: Border.all(color: AppColors.messageCardBorder),
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            '日程列表',
+            style: TextStyle(
+              fontSize: 16,
+              fontWeight: FontWeight.w600,
+              color: AppColors.slate900,
+            ),
+          ),
+          if (page != null || total != null) ...[
+            SizedBox(height: AppSpacing.xs),
+            Text(
+              '第${page ?? '-'}页 · 共${total ?? '-'}条',
+              style: TextStyle(fontSize: 12, color: AppColors.slate500),
+            ),
+          ],
+          SizedBox(height: AppSpacing.sm),
+          if (items.isEmpty)
+            Text(
+              '暂无日程',
+              style: TextStyle(fontSize: 14, color: AppColors.slate500),
+            ),
+          for (final item in items)
+            if (item is Map<String, dynamic>)
+              Padding(
+                padding: EdgeInsets.only(bottom: AppSpacing.xs),
+                child: Text(
+                  item['title']?.toString() ?? '未命名日程',
+                  style: TextStyle(fontSize: 14, color: AppColors.slate700),
+                ),
+              ),
+        ],
+      ),
+    );
+  }
+
+  static Widget _renderCalendarOperation(UiCard card) {
+    final ok = card.data['ok'] == true;
+    final operation = card.data['operation']?.toString() ?? 'operation';
+    final message = card.data['message']?.toString() ?? (ok ? '操作成功' : '操作失败');
+
+    return Container(
+      padding: EdgeInsets.all(AppSpacing.lg),
+      decoration: BoxDecoration(
+        color: ok ? AppColors.messageCardBg : AppColors.warningBackground,
+        borderRadius: BorderRadius.circular(AppRadius.lg),
+        border: Border.all(
+          color: ok ? AppColors.messageCardBorder : AppColors.red400,
+        ),
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          Text(
+            '日程$operation结果',
+            style: TextStyle(
+              fontSize: 14,
+              fontWeight: FontWeight.w600,
+              color: ok ? AppColors.slate900 : AppColors.red600,
+            ),
+          ),
+          SizedBox(height: AppSpacing.xs),
+          Text(
+            message,
+            style: TextStyle(
+              fontSize: 13,
+              color: ok ? AppColors.slate600 : AppColors.red600,
+            ),
+          ),
+          if (card.actions != null && card.actions!.isNotEmpty) ...[
+            SizedBox(height: AppSpacing.md),
+            _buildActions(card.actions!),
+          ],
+        ],
+      ),
+    );
+  }
+
   static Widget _renderErrorCard(UiCard card) {
     final message = card.data['message'] as String? ?? '发生错误';