The livekit package is the client SDK and doesn't include the server-side
API module. Switch to livekit-api which provides AccessToken, VideoGrants,
RoomAgentDispatch, and RoomConfiguration needed for token generation.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Upgrade websockets from ==12.0 to >=13.0 (openai[realtime] requires >=13)
- Install torch CPU-only build separately in Dockerfile to avoid ~2GB CUDA download
- Remove torch from requirements.txt (installed via --index-url cpu wheel)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Claude API supports up to 32MB PDFs; base64 encoding adds ~33% overhead.
50mb body limit covers the maximum single-document upload case.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
PDF files were incorrectly wrapped as type:'image' content blocks,
causing Claude API to reject them as "Invalid image data".
- conversation-context.service: check mediaType for application/pdf,
use type:'document' block (Anthropic native PDF support) instead
- claude-agent-sdk-engine: detect both 'image' and 'document' blocks
when deciding to build multimodal SDK prompt
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Update migration files to include the attachments column for
multimodal image storage. Also add ALTER TABLE migration for
existing deployments.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The direct `import * as express from 'express'` caused a
MODULE_NOT_FOUND error in the Docker production image since express
is only available as a transitive dependency via @nestjs/platform-express.
Use NestExpressApplication.useBodyParser() which is the official NestJS API.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- SDK engine now constructs AsyncIterable<SDKUserMessage> with image
content blocks when attachments are present in conversationHistory,
using the SDK's native multimodal prompt format
- CLI engine logs a warning when images are detected, since the `-p`
flag only accepts text (upstream Claude CLI limitation)
- Both SDK and API engines now fully support multimodal image input
Co-Authored-By: Claude Opus 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>
6 rounds of systematic audit identified and fixed 14 bugs across
backend controller and Flutter client:
## Backend (agent.controller.ts)
Security & Tenant Isolation:
- Add @TenantId + ForbiddenException check to cancelTask, injectMessage,
approveCommand — all 4 write endpoints now enforce tenant isolation
- Add tenantId check on session reuse in executeTask to prevent
cross-tenant session hijacking
Architecture & Correctness:
- Extract shared runTaskStream() from inline fire-and-forget block,
used by both executeTask and injectMessage to reduce duplication
- Use session.engineType (not getActiveEngine()) in cancelTask,
injectMessage, approveCommand — fixes wrong-engine-cancel when
global engine config is switched after task creation
- Add concurrent task prevention: executeTask checks for existing
RUNNING task on same session and cancels it before starting new one
- Add runningTasks Map to track task promises, awaitTaskCleanup()
helper with 3s timeout for inject to wait for partial text save
- captureSdkSessionId() captures SDK session ID into metadata
without DB save (callers persist), preventing fire-and-forget race
Cancel/Reject Improvements:
- cancelTask: idempotent (returns early if already CANCELLED/COMPLETED),
session stays 'active' (was 'cancelled'), emits cancelled WS event
- approveCommand reject: session stays 'active' (was 'cancelled'),
now emits cancelled WS event so Flutter stream listeners clean up
- approveCommand approved: collect text events and save assistant
response to conversation history on completion (was missing)
Minor:
- task.result! non-null assertion → task.result ?? 'Unknown error'
- Add findRunningBySessionId() to TaskRepository
## Flutter
API Contract Fix:
- approveCommand: route changed from /api/v1/ops/approvals/:id/approve
to /api/v1/agent/tasks/:id/approve with {approved: true} body
- rejectCommand: route changed from /api/v1/ops/approvals/:id/reject
to /api/v1/agent/tasks/:id/approve with {approved: false} body
Resource Management:
- ChatNotifier.dispose() now disconnects WebSocket to prevent
connection leak when navigating away from chat
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>
Previously AgentSkillService wrote skills to public.agent_skills (TypeORM
entity with tenantId column filter), while ClaudeAgentSdkEngine read from
it0_t_{tenantId}.skills (per-tenant schema). The two tables were never
connected, so any skill added via the CRUD API was invisible to the agent.
This fix:
- Rewrites AgentSkillService to use DataSource + raw SQL against the
per-tenant schema it0_t_{tenantId}.skills
- Maps API fields: script→content, enabled→is_active
- Removes AgentSkillRepository and AgentSkill entity from module (no longer needed)
- CRUD API response shape is unchanged (fields mapped back to script/enabled)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Load active skills from the tenant's schema `skills` table and append
them to the system prompt before passing to the Claude Agent SDK. This
closes the gap where skills existed in the DB but were never surfaced
to the agent during task execution.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The createCredential method was missing the tenantId assignment,
causing a NOT NULL constraint violation on the credentials table.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Server side (session_router.py):
- /reconnect now accepts sessions in "active" state (not just "disconnected")
- When client reconnects to an active session, the old WebSocket/pipeline is
automatically replaced when the new WebSocket connects
- Only truly terminal states (e.g. "ended") return 409
Flutter side (agent_call_page.dart):
- Distinguish terminal errors (404 session gone, 409 ended) from transient
errors (network timeout, server unreachable) in reconnect loop
- Terminal errors break immediately instead of wasting retry attempts
- Extract _connectWebSocket() helper for cleaner reconnect flow
- Add DioException handling for proper HTTP status code inspection
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
OpenAI TTS returns 24kHz audio which Android MediaPlayer can't play
via FlutterSound's pcm16WAV codec. Request raw PCM and resample to
16kHz before wrapping in WAV header, matching the local TTS format.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Local /synthesize and /transcribe endpoints now auto-load Kokoro/Whisper
models on first call instead of returning 503 when not pre-loaded at
startup. This allows switching between Local and OpenAI providers in the
Flutter test page without requiring server restart.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace prompt-prefix workaround with SDK's native resume mechanism.
Each tenant gets isolated HOME directory (/data/claude-tenants/{tenantId})
to prevent cross-tenant session file mixing. SDK session IDs are persisted
in session.metadata for cross-request resume support.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Implement DB-based conversation message storage (engine-agnostic) that
works across both Claude API and Agent SDK engines. Add ChatGPT/Claude-style
conversation history drawer in Flutter with date-grouped session list,
session switching, and new chat functionality.
Backend: entity, repository, context service, migration 004, session/message
API endpoints. Flutter: ConversationDrawer, sessionId flow from backend
response via SessionInfoEvent, session list/switch/delete support.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add STT_PROVIDER/TTS_PROVIDER config (local or openai) in settings
- Pipeline uses OpenAI API for STT/TTS when provider is "openai"
- Skip loading local models (Kokoro/faster-whisper) when using OpenAI
- VAD (Silero) always loads for speech detection
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Add openai package to voice-service requirements
- Add /api/v1/test/tts/synthesize-openai (tts-1/tts-1-hd/gpt-4o-mini-tts)
- Add /api/v1/test/stt/transcribe-openai (gpt-4o-transcribe/whisper-1)
- Add OPENAI_API_KEY and OPENAI_BASE_URL env vars to voice-service
- Flutter test page: SegmentedButton to toggle Local/OpenAI provider
- All endpoints maintain same response format for easy comparison
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- Claude API engine now uses streaming API (messages.stream) for real-time
text delta output instead of waiting for full response
- Agent controller accepts optional engineType body parameter to allow
callers (e.g. voice pipeline) to select a specific engine
- Fix voice_test_page.dart compilation error: replace audioplayers (not
installed) with flutter_sound (already in pubspec.yaml)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- STT: record from mic or upload audio file → faster-whisper transcription
- Round-trip: record → STT → TTS → playback (full pipeline test)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Browser-accessible page to test text-to-speech synthesis without
going through the full voice pipeline.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
When the first punctuation mark appeared before _MIN_SENTENCE_LEN chars,
the regex search would always find it first and skip it, permanently
blocking all subsequent sentence splits. Fix by advancing search_start
past short matches instead of breaking out of the loop.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Add finished guard so that once a task reaches completed/error terminal
state, subsequent events don't flip the status back.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
SDK sends text both via stream_event deltas (token-level) and assistant
message (complete block). Track hasStreamedText flag per session to skip
duplicate text extraction from assistant messages.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Replace batch TTS (wait for full response) with streaming approach:
- _agent_generate → _agent_stream async generator (yield text chunks)
- _process_speech accumulates tokens, splits on sentence boundaries
- Each sentence is TTS'd and sent immediately while more tokens arrive
- First audio plays within ~1s of agent response vs waiting for full text
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Root causes found:
1. SDK engine only emitted 'completed' without 'text' events because
mapSdkMessage skipped text blocks in 'assistant' messages (assumed
stream_event deltas would provide them, but SDK didn't send deltas)
2. Voice pipeline read evt_data.data.content but engine events are flat
(evt_data.content) — so even if text arrived, it was never extracted
Fixes:
- Extract text/thinking blocks from assistant messages in SDK engine
- Fix voice pipeline to read content directly from evt_data, not nested
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Log every SDK message type, event emission, and stream lifecycle
to diagnose why text events are missing in voice-agent flow.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Log timestamps, content, and event details at each pipeline stage
to help diagnose voice-agent integration issues.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Buffer stream events when no WS clients are subscribed yet, then replay
them when a client subscribes. This eliminates the race condition where
events are lost between task creation and WS subscription.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
The engine stream could emit text events before the voice pipeline
subscribed, causing all text to be lost. Now we connect and subscribe
first, then POST the task.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Voice calls now use the same agent task + WS subscription flow as the
chat UI, enabling tool use and command execution during voice sessions.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Root cause: Pipecat's WebsocketServerTransport creates its own WebSocket
server on (host,port) and expects FrameProcessor subclasses. Our code was
passing a FastAPI WebSocket object as 'host' and using plain STT/TTS/VAD
service classes that aren't FrameProcessors. The pipeline crashed immediately
when receiving audio, causing "disconnects when speaking".
Changes:
- **base_pipeline.py**: Complete rewrite — replaced Pipecat Pipeline with
direct async loop: WebSocket → VAD → STT → Claude LLM → TTS → WebSocket.
Supports barge-in (interrupt TTS when user speaks), audio chunking, and
24kHz→16kHz TTS resampling.
- **session_router.py**: Pass WebSocket directly to pipeline instead of
wrapping in AppTransport.
- **app_transport.py**: Deprecated (no longer needed).
- **kokoro_service.py**: Fix misaki compatibility (MutableToken→MToken
rename), use correct Chinese voice 'zf_xiaoxiao', handle torch tensors.
- **main.py**: Apply misaki monkey-patch before importing kokoro.
- **settings.py**: Change default TTS voice from 'zh_female_1' (non-existent)
to 'zf_xiaoxiao' (valid Kokoro-82M Chinese female voice).
- **requirements.txt**: Remove pipecat-ai dependency, pin kokoro==0.3.5 +
misaki==0.7.17, add Chinese NLP deps (pypinyin, cn2an, jieba, ordered-set).
- **agent_call_page.dart**: Wrap each cleanup step in try/catch to ensure
Navigator.pop() always executes after call ends. Add 3s timeout on session
delete request.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Backend:
- Add includePartialMessages: true to SDK query options
- Handle stream_event/content_block_delta for real-time text streaming
- Skip text/thinking blocks from complete assistant messages (already
streamed via deltas) to avoid duplication
- Change default result summary to empty string
Flutter:
- Only show CompletedEvent summary when no assistant text was streamed
(prevents duplicate message bubble)
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Kong 3.7 OSS doesn't support ws/wss protocol identifiers (Enterprise only).
WebSocket upgrades are handled transparently over http/https protocols.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Socket.IO requires its own handshake protocol (EIO=4) which Kong cannot
proxy as a plain WebSocket upgrade, causing 502 Bad Gateway. Switch to
@nestjs/platform-ws (WsAdapter) with manual session room tracking so
Flutter's IOWebSocketChannel can connect directly.
Also add ws/wss protocols to Kong WebSocket routes.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Required by FastAPI for form/file upload parsing. Missing dependency
may cause import errors and container restart loops.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
TenantAwareRepository.getRepository() was calling createQueryRunner()
without ever releasing it, causing database connection pool exhaustion.
This caused ops-service (and eventually other services) to hang on
all API requests once the pool filled up.
Replaced getRepository() with withRepository() pattern that wraps
operations in try/finally to always release the QueryRunner.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
Addresses reliability gaps in the real-time voice WebSocket connection
between Flutter client and Python voice-service backend.
Backend (voice-service):
- Heartbeat: new _heartbeat_sender coroutine sends JSON ping text frames
every 15s alongside the Pipecat pipeline; failed send = dead connection
- Session preservation: on WebSocket disconnect, sessions are now marked
"disconnected" with a timestamp instead of being deleted, allowing
reconnection within a configurable TTL (default 60s)
- Reconnect endpoint: POST /sessions/{id}/reconnect verifies the session
is alive and in "disconnected" state, returns fresh websocket_url
- Reconnect-aware WS handler: detects "disconnected" sessions, cancels
stale pipeline tasks, creates a new pipeline, sends "session.resumed"
- Background cleanup: asyncio loop every 30s removes sessions that have
been disconnected longer than session_ttl
- Structured event protocol: text frames = JSON control messages
(ping/pong/session.resumed/session.ended/error), binary = PCM audio
- New settings: session_ttl (60s), heartbeat_interval (15s),
heartbeat_timeout (45s)
Flutter (agent_call_page.dart):
- Heartbeat monitoring: tracks last server ping timestamp, triggers
reconnect if no ping received in 45s (3 missed intervals)
- Auto-reconnect: exponential backoff (1s→2s→4s→8s→16s), max 5 attempts;
calls /reconnect endpoint to verify session, rebuilds WebSocket,
resets audio buffer, restarts heartbeat
- Reconnecting UI: yellow warning banner "重新连接中... (N/5)" with
spinner overlay during reconnection attempts
- WebSocket data routing: _onWsData distinguishes String (JSON control)
from binary (audio) frames, handles ping/session.resumed/session.ended
- User-initiated disconnect guard: _userEndedCall flag prevents reconnect
attempts when user intentionally hangs up
- session_id field compatibility: supports session_id/sessionId/id
Flutter (pcm_player.dart):
- Jitter buffer: queues incoming PCM chunks, starts playback only after
accumulating 4800 bytes (150ms at 16kHz 16-bit mono) to smooth out
network timing variance
- reset() method: clears buffer on reconnect to discard stale audio
- Buffer underrun handling: re-enters buffering phase if queue empties
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
SDK blocks bypassPermissions when running as root for security.
Add non-root 'appuser' to Dockerfile.service and update volume
mounts to use /home/appuser/.claude paths.
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
- bypassPermissions blocked by SDK when running as root
- Switch to acceptEdits with canUseTool for programmatic control
- Mount .claude.json config file into container
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
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