New VoiceMicButton widget (press-and-hold to record, release to send):
- Records audio to a temp .m4a file via the `record` package
- Slide-up gesture cancels recording without sending
- Pulsing red mic icon + "松开发送/松开取消" feedback during recording
New flow for voice messages:
1. Temp "🎤 识别中..." bubble shown immediately
2. Audio uploaded to POST /api/v1/agent/sessions/:id/voice-message
(multipart/form-data; backend runs Whisper STT)
3. Placeholder replaced with real transcript
4. WS stream subscribed via new subscribeExistingTask() to receive
agent's streaming response — same pipeline as text chat
Voice messages act as async interrupts: if the agent is mid-task the
backend hard-cancels it before processing the new voice command,
so whoever presses the mic button always takes priority.
Files changed:
chat_remote_datasource.dart — sendVoiceMessage() multipart upload
chat_repository.dart — subscribeExistingTask() interface method
chat_repository_impl.dart — implement subscribeExistingTask(); fix
sendVoiceMessage() stub
chat_providers.dart — ChatNotifier.sendVoiceMessage()
voice_mic_button.dart — NEW press-and-hold recording widget
chat_page.dart — mic button added to input area
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Two major features in this commit:
1. Streaming Markdown Rendering Optimization
- Replace deprecated flutter_markdown with gpt_markdown (active, AI-optimized)
- Real-time markdown rendering during streaming (was showing raw syntax)
- Solid block cursor (█) instead of AnimationController blink
- 80ms token throttle buffer reducing rebuilds from per-token to ~12.5/sec
- RepaintBoundary isolation for markdown widget repaints
- StreamTextWidget simplified from StatefulWidget to StatelessWidget
2. Multimodal Image Input (camera + gallery + display)
- Flutter: image_picker for gallery/camera, base64 encoding, attachment
preview strip with delete, thumbnails in sent messages
- Data layer: List<String>? → List<Map<String, dynamic>>? for structured
attachment payloads through datasource/repository/usecase
- ChatAttachment model with base64Data, mediaType, fileName
- ChatMessage entity + ChatMessageModel both support attachments field
- Backend DTO, Entity (JSONB), Controller, ConversationContextService
all extended to receive, store, and reconstruct Anthropic image
content blocks in loadContext()
- Claude API engine skips duplicate user message when history already
ends with multimodal content blocks
- NestJS body parser limit raised to 10MB for base64 image payloads
- Android CAMERA permission added to manifest
- Image.memory uses cacheWidth/cacheHeight for memory efficiency
- Max 5 images per message enforced in UI
Data flow:
ImagePicker → base64Encode → ChatAttachment → POST body →
DB (JSONB) → loadContext → Anthropic image content blocks → Claude API
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Backend (agent-engine.port.ts):
- Add `cancelled` event type: emitted when a task is cancelled (user-initiated
or injection), so Flutter can close the old stream cleanly
- Add `task_info` event type: emitted after inject to pass the new taskId to
the client, enabling cancel/re-inject on the replacement task
Flutter (features/chat/):
- ChatState: track current `taskId` alongside `sessionId`; clear on completion
or error
- Handle `TaskInfoEvent`: update taskId in state when server issues a new task
- Handle `CancelledEvent`: treat as stream termination (agentStatus → idle)
- MessageType.interrupted: new UI node (warning style) for mid-stream cancels
- _inject(): send text as an inject request while streaming; backend cancels
the current task and starts a new one with the injected message
- Input area: during streaming, hint changes to "追加指令...", Enter key calls
_inject() instead of _send(), and both inject-send + stop buttons are shown
- isAwaitingApproval kept separate from isStreaming so approval flow is not
blocked by inject mode
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
hailin