# Sprint 41 Status Summary

**Date**: 2026-02-23
**Status**: ✅ COMPLETE (100% Implementation)

---

## Quick Status

```
✅ Types & Schema:           src/agents/fix-logging/types.ts, schema.ts
✅ Fix Log Writer:           src/agents/fix-logging/fix-log-writer.ts
✅ Fix Logger API:           src/agents/fix-logging/fix-logger.ts
✅ Pattern Manager:          src/agents/fix-logging/pattern-manager.ts
✅ CLI Commands:             src/cli/commands/fixes.ts
🧪 Test Coverage:           1,951 tests passing (58 test files)
📈 New Tests:               37 tests added
```

---

## ✅ Sprint 41 Implementation Complete

### Fix Logging & Learning Engine

| Module | File | Purpose | Status |
|--------|------|---------|--------|
| **Types** | `src/agents/fix-logging/types.ts` | EnhancedFixLogEntry, ErrorPattern, WeeklySummary | ✅ Complete |
| **Schema** | `src/agents/fix-logging/schema.ts` | Zod validation for fix logs & patterns | ✅ Complete |
| **Fix Log Writer** | `src/agents/fix-logging/fix-log-writer.ts` | Append-only, atomic writes, rotation | ✅ Complete |
| **Fix Logger** | `src/agents/fix-logging/fix-logger.ts` | High-level API with analytics | ✅ Complete |
| **Pattern Manager** | `src/agents/fix-logging/pattern-manager.ts` | Pattern CRUD, import/export | ✅ Complete |
| **CLI Fixes** | `src/cli/commands/fixes.ts` | Weekly review, pattern commands | ✅ Complete |

---

## 🏗️ Architecture

```
Self-Correction Engine
        ↓
    Fix Logger  ──→  Fix Log Writer  ──→  ~/.endiorbot/learning/fix-log.json
        ↓
  Pattern Manager ──→ patterns.json
        ↓
  Weekly Analytics ──→ CLI "fixes" command
```

### Data Flow

1. **Error Detection**: Self-correction engine detects error
2. **Pattern Matching**: Fix Logger matches against 18 default patterns
3. **Fix Attempt**: Deterministic or AI-assisted fix applied
4. **Logging**: Result written atomically to fix-log.json
5. **Analytics**: Pattern success rates updated in patterns.json
6. **Review**: CEO reviews weekly via `endiorbot fixes --week`

---

## 📦 Key Features

### Structured Logging

```typescript
interface EnhancedFixLogEntry {
  id: string;                    // UUID v4
  timestamp: string;             // ISO 8601
  sessionId: string;             // Session context
  trackId?: string;              // Parallel track (Sprint 40)

  errorType: ErrorCategory;      // TYPE | LINT | BUILD | TEST | SECURITY
  errorCode: string;             // TS2304, no-unused-vars, etc.
  filePath: string;              // Affected file
  lineNumber?: number;           // Error location

  patternId?: string;            // Matched pattern ID
  fixStrategy: FixStrategy;      // DETERMINISTIC | AI_ASSISTED | MANUAL | SKIPPED
  fixDescription: string;        // Human-readable description

  success: boolean;              // Fix successful?
  duration: number;              // Time spent (ms)
  diff?: string;                 // Git-style diff

  metadata?: Record<string, unknown>;  // Additional context
}
```

### Pattern Tracking (18 Default Patterns)

| Category | Patterns | Example |
|----------|----------|---------|
| **TYPE** | 8 | TS2304 (undeclared variable), TS2345 (type mismatch) |
| **LINT** | 10 | no-unused-vars, prefer-const, @typescript-eslint/* |

**Pattern Fields**:
```typescript
interface ErrorPattern {
  id: string;                    // Unique ID
  errorCode: string;             // TS2304, no-unused-vars
  category: ErrorCategory;       // TYPE | LINT
  description: string;           // Human-readable
  fixStrategy: FixStrategy;      // Default fix approach

  // Analytics
  occurrences: number;           // Total times seen
  successRate: number;           // 0-1 success rate
  avgDuration: number;           // Average fix time (ms)
  lastSeen: string;              // ISO timestamp

  // Matching
  matchPattern?: string;         // Regex for matching
  relatedPatterns?: string[];    // Related pattern IDs
}
```

### Weekly Analytics

```typescript
interface WeeklySummary {
  weekStart: string;             // Monday ISO date
  weekEnd: string;               // Sunday ISO date

  totalFixes: number;            // Total fix attempts
  successfulFixes: number;       // Successful fixes
  failedFixes: number;           // Failed fixes
  skippedFixes: number;          // Skipped (manual intervention)

  byCategory: {
    [category: string]: {
      total: number;
      success: number;
      avgDuration: number;
    };
  };

  topPatterns: Array<{
    patternId: string;
    occurrences: number;
    successRate: number;
  }>;

  problematicPatterns: Array<{
    patternId: string;
    failureRate: number;
    occurrences: number;
  }>;
}
```

---

## 💻 CLI Commands

### Weekly Summary

```bash
# Show this week's fix summary
endiorbot fixes --week

# Output:
# 📊 Weekly Fix Summary (Feb 17 - Feb 23, 2026)
# ─────────────────────────────────────────────
# Total Fixes:      147
# Successful:       138 (93.9%)
# Failed:           6 (4.1%)
# Skipped:          3 (2.0%)
#
# By Category:
#   TYPE:           89 fixes (95.5% success, avg 234ms)
#   LINT:           52 fixes (92.3% success, avg 156ms)
#   BUILD:          4 fixes (75.0% success, avg 1,892ms)
#   TEST:           2 fixes (50.0% success, avg 4,521ms)
#
# Top Patterns:
#   1. TS2304 (undeclared variable): 34 occurrences, 97.1% success
#   2. no-unused-vars: 28 occurrences, 96.4% success
#   3. prefer-const: 19 occurrences, 100% success
#
# ⚠️ Problematic Patterns:
#   1. TS2345 (type mismatch): 8 occurrences, 62.5% success
#   2. BUILD-001: 4 occurrences, 75.0% success
```

### Pattern Analysis

```bash
# Show recurring patterns
endiorbot fixes --patterns

# Output:
# 🔍 Error Patterns Analysis
# ─────────────────────────
# Pattern                     | Count | Success | Avg Time
# ─────────────────────────────────────────────────────────
# TS2304 (undeclared var)     | 34    | 97.1%   | 234ms
# no-unused-vars              | 28    | 96.4%   | 156ms
# prefer-const                | 19    | 100%    | 89ms
# TS2345 (type mismatch)      | 8     | 62.5%   | 1,234ms
# @typescript-eslint/no-...   | 7     | 85.7%   | 312ms
```

### Export Fix Log

```bash
# Export as JSON
endiorbot fixes --export json > fix-history.json

# Export as CSV
endiorbot fixes --export csv > fix-history.csv
```

### Pattern Management

```bash
# List all patterns
endiorbot fixes patterns list

# Export patterns
endiorbot fixes patterns export > patterns.json

# Import patterns (merge with existing)
endiorbot fixes patterns import patterns.json

# Reset to defaults (18 patterns)
endiorbot fixes patterns reset
```

---

## 📁 Storage Locations

```
~/.endiorbot/learning/
├── fix-log.json      # Fix attempt history (max 10,000 entries)
└── patterns.json     # Pattern library with analytics
```

### Auto-Rotation

- **Max entries**: 10,000 in fix-log.json
- **Rotation**: Keeps newest 80% (8,000 entries)
- **Triggered**: Automatically on write when limit exceeded
- **Atomic writes**: Uses temp file + rename for safety

---

## 🧪 Test Results

```
Test Files  58 passed (58)
     Tests  1951 passed | 1 skipped (1952)
  Duration  63.24s
```

### New Tests Added (37 tests)

| Test File | Tests | Coverage |
|-----------|-------|----------|
| `tests/agents/fix-logging/fix-logger.test.ts` | ~22 | Logger API, analytics, patterns |
| `tests/agents/fix-logging/pattern-manager.test.ts` | ~15 | CRUD, import/export, defaults |

---

## 📁 File Structure

```
src/agents/fix-logging/
├── types.ts            ✅ EnhancedFixLogEntry, ErrorPattern, WeeklySummary
├── schema.ts           ✅ Zod validation schemas
├── fix-log-writer.ts   ✅ Atomic writes, rotation
├── fix-logger.ts       ✅ High-level API
├── pattern-manager.ts  ✅ Pattern CRUD
└── index.ts            ✅ Exports

src/cli/commands/
└── fixes.ts            ✅ CLI "fixes" command

tests/agents/fix-logging/
├── fix-logger.test.ts       ✅ ~22 tests
└── pattern-manager.test.ts  ✅ ~15 tests
```

---

## 🎯 Success Criteria

### Sprint 41 Complete When:

- [x] EnhancedFixLogEntry type defined ✅
- [x] ErrorPattern type with analytics ✅
- [x] Zod validation schemas ✅
- [x] Atomic fix log writer with rotation ✅
- [x] High-level Fix Logger API ✅
- [x] Pattern Manager with CRUD ✅
- [x] 18 default patterns (TYPE + LINT) ✅
- [x] Weekly analytics calculation ✅
- [x] CLI "fixes" command ✅
- [x] Pattern import/export ✅
- [x] All 1,951 tests passing ✅
- [x] 37 new tests added ✅

**Final Progress**: 100% implementation

---

## 🔄 Integration Points

### Integrated With

| Component | Integration |
|-----------|-------------|
| **Self-Correction Engine** (existing) | Logs fix attempts |
| **Parallel Executor** (Sprint 40) | trackId in log entries |
| **SessionManager** (existing) | sessionId context |
| **CLI Framework** (existing) | "fixes" subcommand |

### Future Integration

| Component | Purpose |
|-----------|---------|
| **Quality Gates** (Sprint 39) | Adjust thresholds based on patterns |
| **Cost Optimizer** (Sprint 39) | Route based on pattern success rate |
| **MultiModelOrchestrator** (Sprint 39) | AI consultation for problematic patterns |

---

## 💡 Usage Examples

### Programmatic API

```typescript
import { FixLogger, PatternManager } from '@agents/fix-logging';

// Initialize
const logger = new FixLogger();
const patterns = new PatternManager();

// Log a fix attempt
await logger.log({
  sessionId: 'sess-123',
  trackId: 'track-1',
  errorType: 'TYPE',
  errorCode: 'TS2304',
  filePath: 'src/index.ts',
  lineNumber: 42,
  fixStrategy: 'DETERMINISTIC',
  fixDescription: 'Added missing import for Logger',
  success: true,
  duration: 234,
  diff: '+ import { Logger } from "./logger";',
});

// Get weekly summary
const summary = await logger.getWeeklySummary();
console.log(`Success rate: ${(summary.successfulFixes / summary.totalFixes * 100).toFixed(1)}%`);

// Analyze patterns
const problematic = await patterns.getProblematicPatterns(0.7);
for (const p of problematic) {
  console.log(`⚠️ ${p.errorCode}: ${p.successRate * 100}% success`);
}
```

### Integration with Self-Correction

```typescript
import { SelfCorrectionEngine } from '@self-correction';
import { FixLogger } from '@agents/fix-logging';

const engine = new SelfCorrectionEngine();
const logger = new FixLogger();

// Wrap fix attempts with logging
async function fixWithLogging(error: ParsedError): Promise<FixResult> {
  const start = Date.now();
  const result = await engine.fix(error);

  await logger.log({
    sessionId: getCurrentSession(),
    errorType: error.category,
    errorCode: error.code,
    filePath: error.file,
    lineNumber: error.line,
    fixStrategy: result.strategy,
    fixDescription: result.description,
    success: result.success,
    duration: Date.now() - start,
    diff: result.diff,
  });

  return result;
}
```

---

## 🚀 Sprint 42 Preview

Based on the Autonomy Epic plan, Sprint 42 will focus on:

### Adaptive Quality Tuning
- Auto-adjust quality thresholds based on pattern success rates
- Route problematic patterns to AI consultation
- Learn optimal model selection per error type
- Feedback loop: patterns → quality gates → model selector

### Estimated Scope
- **LOC**: ~400 (threshold-tuner.ts, feedback-loop.ts)
- **Tests**: ~35 tests
- **Duration**: 5-7 days

---

## 📊 Sprint Progress Summary

| Sprint | Focus | Status | Tests Added |
|--------|-------|--------|-------------|
| **Sprint 38** | Multi-Provider Architecture | ✅ Complete | +88 |
| **Sprint 39** | Multi-Model Orchestration | ✅ Complete | +163 |
| **Sprint 40** | Parallel Execution | ✅ Complete | +60 |
| **Sprint 41** | Fix Logging & Learning | ✅ Complete | +37 |
| **Total** | | | **+348** |

**Cumulative Test Coverage**: 1,951 tests (58 files)

---

*Sprint 41 Status - Fix Logging & Learning Engine*
*Completed: 2026-02-23*
