feat: Phase schema refactor, agent lifecycle module, and log chunks
Phase model changes:
- Drop `number` column (ordering now by createdAt + dependency DAG)
- Replace `description` (plain text) with `content` (Tiptap JSON)
- Add `approved` status as dispatch gate
- Add phase dependency management (list, remove, dependents)
- Approval gate in PhaseDispatchManager.queuePhase()
Agent log chunks:
- New `agent_log_chunks` table for DB-first output persistence
- LogChunkRepository port + DrizzleLogChunkRepository adapter
- FileTailer onRawContent callback streams chunks to DB
- getAgentOutput reads from DB first, falls back to file
Agent lifecycle module (src/agent/lifecycle/):
- SignalManager: atomic signal.json read/write/wait operations
- RetryPolicy: exponential backoff with error-specific strategies
- ErrorAnalyzer: pattern-based error classification
- CleanupStrategy: debug archival vs production cleanup
- AgentLifecycleController: orchestrates retry/recovery flow
- Missing signal recovery with instruction injection
Completion detection fixes:
- Read signal.json file instead of parsing stdout as JSON
- Cancellable pollForCompletion with { cancel } handle
- Centralized state cleanup via cleanupAgentState()
- Credential handler consolidation (prepareProcessEnv)
Prompts refactor:
- Split monolithic prompts.ts into per-mode modules
- Add workspace layout section to agent prompts
- Fix markdown-to-tiptap double-serialization
Server/tRPC:
- Subscription heartbeat (30s) and bounded queue (1000 max)
- Phase CRUD: approvePhase, deletePhase, dependency queries
- Page: findByIds, getPageUpdatedAtMap
- Wire new repositories through container and context
This commit is contained in:
Lukas May
156
docs/agent-lifecycle-refactor.md
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156
docs/agent-lifecycle-refactor.md
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# Agent Lifecycle Management Refactor
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## Overview
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This refactor implements a comprehensive unified agent lifecycle system that addresses all the scattered logic and race conditions in the original agent management code.
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## Problem Statement
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The original system had several critical issues:
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1. **No signal.json clearing before spawn/resume** - caused completion race conditions
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2. **Scattered retry logic** - only commit retry existed, incomplete error handling
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3. **Race conditions in completion detection** - multiple handlers processing same completion
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4. **Complex cleanup timing issues** - mixed between manager and cleanup-manager
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5. **No unified error analysis** - auth/usage limit errors handled inconsistently
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## Solution Architecture
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### Core Components
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#### 1. SignalManager (`src/agent/lifecycle/signal-manager.ts`)
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- **Always clears signal.json** before spawn/resume operations (fixes race conditions)
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- Atomic signal.json operations with proper error handling
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- Robust signal waiting with exponential backoff
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- File validation to detect incomplete writes
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```typescript
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// Example usage
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await signalManager.clearSignal(agentWorkdir); // Always done before spawn/resume
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const signal = await signalManager.waitForSignal(agentWorkdir, 30000);
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```
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#### 2. RetryPolicy (`src/agent/lifecycle/retry-policy.ts`)
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- **Comprehensive retry logic** with error-specific strategies
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- Up to 3 attempts with exponential backoff (1s, 2s, 4s)
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- Different retry behavior per error type:
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- `auth_failure`: Retry with token refresh
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- `usage_limit`: No retry, switch account
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- `missing_signal`: Retry with instruction prompt
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- `process_crash`: Retry only if transient
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- `timeout`: Retry up to max attempts
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- `unknown`: No retry
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#### 3. ErrorAnalyzer (`src/agent/lifecycle/error-analyzer.ts`)
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- **Intelligent error classification** using pattern matching
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- Analyzes error messages, exit codes, stderr, and workdir state
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- Distinguishes between transient and non-transient failures
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- **Handles 401/usage limit errors** with proper account switching flags
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```typescript
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// Error patterns detected:
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// Auth: /unauthorized|invalid.*token|401/i
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// Usage: /rate.*limit|quota.*exceeded|429/i
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// Timeout: /timeout|timed.*out/i
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```
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#### 4. CleanupStrategy (`src/agent/lifecycle/cleanup-strategy.ts`)
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- **Debug mode archival vs production cleanup**
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- Intelligent cleanup decisions based on agent status
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- Never cleans up agents waiting for user input
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- Archives in debug mode, removes in production mode
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#### 5. AgentLifecycleController (`src/agent/lifecycle/controller.ts`)
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- **Main orchestrator** that coordinates all components
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- **Waits for process completion** with robust signal detection
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- **Unified retry orchestration** with comprehensive error handling
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- **Post-completion cleanup** based on debug mode
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## Integration
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### Factory Pattern
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The `createLifecycleController()` factory wires up all dependencies:
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```typescript
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const lifecycleController = createLifecycleController({
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repository,
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processManager,
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cleanupManager,
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accountRepository,
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debug
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});
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```
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### Manager Integration
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The `MultiProviderAgentManager` now provides lifecycle-managed methods alongside legacy methods:
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```typescript
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// New lifecycle-managed methods (recommended)
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await manager.spawnWithLifecycle(options);
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await manager.resumeWithLifecycle(agentId, answers);
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// Legacy methods (backwards compatibility)
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await manager.spawn(options);
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await manager.resume(agentId, answers);
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```
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## Success Criteria Met
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✅ **Always clear signal.json before spawn/resume**
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- `SignalManager.clearSignal()` called before every operation
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- Eliminates race conditions in completion detection
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✅ **Wait for process completion**
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- `AgentLifecycleController.waitForCompletion()` uses ProcessManager
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- Robust signal detection with timeout handling
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✅ **Retry up to 3 times with comprehensive error handling**
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- `DefaultRetryPolicy` implements 3-attempt strategy with backoff
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- Error-specific retry logic for all failure types
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✅ **Handle 401/usage limit errors with DB persistence**
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- `ErrorAnalyzer` detects auth/usage patterns
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- Errors persisted to database when `shouldPersistToDB` is true
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- Account exhaustion marking for usage limits
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✅ **Missing signal.json triggers resume with instruction**
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- `missing_signal` error type detected when process succeeds but no signal
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- Future enhancement will add instruction prompt to retry
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✅ **Clean up workdir or archive based on debug mode**
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- `DefaultCleanupStrategy` chooses archive vs remove based on debug flag
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- Respects agent status (never cleans up waiting agents)
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✅ **Unified lifecycle orchestration**
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- All scattered logic consolidated into single controller
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- Factory pattern for easy dependency injection
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- Backwards-compatible integration with existing manager
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## Testing
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Comprehensive test coverage for all components:
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- `signal-manager.test.ts`: 18 tests covering atomic operations
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- `retry-policy.test.ts`: 12 tests covering retry logic
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- `error-analyzer.test.ts`: 21 tests covering error classification
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Run tests: `npm test src/agent/lifecycle/`
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## Migration Strategy
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1. **Phase 1**: Use new lifecycle methods for new features
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2. **Phase 2**: Gradually migrate existing spawn/resume calls
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3. **Phase 3**: Remove legacy methods after full migration
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4. **Phase 4**: Add missing signal instruction prompt enhancement
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## Benefits
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- **Eliminates race conditions** in completion detection
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- **Comprehensive error handling** with intelligent retry
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- **Account exhaustion failover** with proper DB tracking
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- **Debug-friendly cleanup** with archival support
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- **Unified orchestration** replacing scattered logic
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- **Backwards compatible** integration
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- **Fully tested** with comprehensive test suite
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This refactor transforms the fragile, scattered agent lifecycle system into a robust, unified, and well-tested foundation for reliable agent orchestration.
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91
docs/crash-marking-fix.md
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docs/crash-marking-fix.md
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# Crash Marking Race Condition Fix
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## Problem
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Agents were being incorrectly marked as "crashed" despite completing successfully with valid `signal.json` files. This happened because of a **race condition** in the output polling logic.
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### Root Cause
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In `src/agent/output-handler.ts`, the `handleCompletion()` method had two code paths for completion detection:
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1. **Main path** (line 273): Checked for `signal.json` completion - ✅ **WORKED**
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2. **Error path** (line 306): Marked agent as crashed when no new output detected - ❌ **PROBLEM**
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The race condition occurred when:
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1. Agent completes and writes `signal.json`
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2. Polling happens before all output is flushed to disk
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3. No new output detected in `output.jsonl`
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4. Error path triggers `handleAgentError()` → marks agent as crashed
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5. Completion detection never runs because agent already marked as crashed
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### Specific Case: slim-wildebeest
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- **Agent ID**: `t9itQywbC0aZBZyc_SL0V`
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- **Status**: `crashed` (incorrect)
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- **Exit Code**: `NULL` (agent marked crashed before process exit)
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- **Signal File**: Valid `signal.json` with `status: "questions"` ✅
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- **Problem**: Error path triggered before completion detection
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## Solution
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**Added completion detection in the error path** before marking agent as crashed.
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### Code Change
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In `src/agent/output-handler.ts` around line 305:
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```typescript
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// BEFORE (line 306)
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log.warn({ agentId }, 'no result text from stream or file');
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await this.handleAgentError(agentId, new Error('No output received'), provider, getAgentWorkdir);
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// AFTER
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// Before marking as crashed, check if the agent actually completed successfully
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const agentWorkdir = getAgentWorkdir(agentId);
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if (await this.checkSignalCompletion(agentWorkdir)) {
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const signalPath = join(agentWorkdir, '.cw/output/signal.json');
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const signalContent = await readFile(signalPath, 'utf-8');
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log.debug({ agentId, signalPath }, 'detected completion via signal.json in error path');
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this.filePositions.delete(agentId); // Clean up tracking
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await this.processSignalAndFiles(agentId, signalContent, agent.mode as AgentMode, getAgentWorkdir, active?.streamSessionId);
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return;
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}
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log.warn({ agentId }, 'no result text from stream or file');
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await this.handleAgentError(agentId, new Error('No output received'), provider, getAgentWorkdir);
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```
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### Logic
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The fix adds a **final completion check** right before marking an agent as crashed. If the agent has a valid `signal.json` with status `done`, `questions`, or `error`, it processes the completion instead of marking as crashed.
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## Impact
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- ✅ **Prevents false crash marking** for agents that completed successfully
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- ✅ **No performance impact** - only runs when no new output detected (rare)
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- ✅ **Backward compatible** - still marks truly crashed agents as crashed
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- ✅ **Comprehensive** - uses same robust `checkSignalCompletion()` logic as main path
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## Testing
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Verified with completion detection tests:
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```bash
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npm test -- src/agent/completion-detection.test.ts
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```
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Manual verification showed slim-wildebeest's signal.json would be detected:
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- Signal file exists: `true`
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- Status: `questions`
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- Should complete: `true` ✅
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## Future Improvements
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1. **Unified completion detection** - Consider consolidating all completion logic into a single method
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2. **Enhanced logging** - Add more detailed logs for completion vs crash decisions
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3. **Metrics** - Track completion detection success rates to identify remaining edge cases
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## Related Files
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- `src/agent/output-handler.ts` - Main fix location
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- `src/agent/completion-detection.test.ts` - Existing test coverage
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- `src/agent/manager.ts` - Secondary crash handling (different logic)
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