┌─────────────────────────────────────────┐
│ TRACES                                  │
├─────────────────────────────────────────│
│ 📋 SPEC-AUTH-001 (User Authentication) │
│ ├── ✅ WORKFLOW-AUTH-1 (100%)          │
│ ├── ✅ MODEL-USER (100%)               │
│ ├── 🟡 API-AUTH-1 (75%)                │
│ │   ├── ✅ REQ-VAL-1 Email validation   │
│ │   ├── ✅ REQ-SEC-1 Password hashing   │
│ │   ├── ❌ REQ-PERF-1 Rate limiting     │
│ │   └── ❌ REQ-LOG-1 Audit logging      │
│ ├── 🔴 COMPONENT-AUTH-1 (20%)          │
│ │   ├── ❌ REQ-UI-1 Form validation     │
│ │   ├── ❌ REQ-UI-2 Error handling      │
│ │   └── ❌ REQ-A11Y-1 Accessibility     │
│ └── ⚪ TEST-AUTH-1 (0%)                 │
└─────────────────────────────────────────┘

// @spec SPEC-AUTH-001/API-AUTH-1
// @context Implements POST /auth/signup with validation
// @dependencies REQ-SEC-1 (password hashing)
export async function signup(req: Request, res: Response) {
  // @spec REQ-VAL-1: Email format validation
  if (!isValidEmail(req.body.email)) {     // ← Green dot: Spec covered
    return res.status(400).json({
      error: 'Invalid email format'
    });
  }
  
  // @spec REQ-SEC-1: Password hashing with bcrypt
  const hash = await bcrypt.hash(req.body.password, 12); // ← Green dot: Spec covered
  
  // Missing: Rate limiting (REQ-PERF-1)         // ← Red dot: Missing requirement
  // Missing: Audit logging (REQ-LOG-1)          // ← Red dot: Missing requirement
  
  const user = await User.create({
    email: req.body.email,
    password_hash: hash
  });
}

┌─────────────────────────────────────┐
│ Specification Context              │
├─────────────────────────────────────│
│ REQ-SEC-1: Password Hashing        │
│                                     │
│ Requirement:                        │
│ Passwords MUST be hashed with       │
│ bcrypt using cost factor 12         │
│                                     │
│ Implementation Status: ✅ Complete  │
│ Agent: dev-agent-v2.1              │
│ Last Modified: 2 hours ago         │
│                                     │
│ Related Requirements:               │
│ → REQ-SEC-2: Session management    │
│ → REQ-VAL-1: Input validation      │
└─────────────────────────────────────┘

# IDE Plugin automatically detects and loads specs
# Navigate to: View > Traces Sidebar

SPEC-AUTH-001 Implementation Overview:
├── Requirements Implemented: 15/18 (83%)
├── Code Coverage: 1,247 lines traced
├── Orphaned Code: 45 lines (3.6%)
├── Recent Agent Activity: 8 files modified
└── Review Priority: Medium (missing non-critical features)

// Agent Implementation Review
// @spec SPEC-AUTH-001/REQ-SEC-1 Password hashing with bcrypt

// ✅ GOOD: Correct bcrypt usage with proper cost factor
const hash = await bcrypt.hash(req.body.password, 12);

// ❓ REVIEW NEEDED: Agent chose to hash in the API layer
// Alternative: Hash in User model or service layer
// Trade-offs: Performance vs separation of concerns

// ❌ MISSING: Agent didn't implement timing attack protection
// Specification requires constant-time response for invalid users
// Need to add: await bcrypt.hash('dummy', 12) for non-existent users

{
  "agent_context": {
    "requirement": "REQ-SEC-1",
    "implementation_choice": "bcrypt hashing in API endpoint", 
    "reasoning": "Follows existing codebase pattern in auth/login.ts",
    "alternatives_considered": [
      "Hash in User model (rejected: breaks API layer pattern)",
      "Hash in service layer (rejected: adds complexity)"
    ],
    "confidence": 0.85
  }
}

// Agent implemented more than required
// @spec REQ-VAL-1: Basic email validation

// ✅ Required: Email format validation
if (!isValidEmail(req.body.email)) {
  return res.status(400).json({ error: 'Invalid email' });
}

// ❓ Agent added (not in spec): Domain blacklist checking
if (isBlockedDomain(req.body.email)) {
  return res.status(400).json({ error: 'Domain not allowed' });
}

// Review Decision: Keep extra validation, update spec to document it

// Agent missed edge cases from specification
// @spec REQ-ERROR-1: Comprehensive error handling

// ✅ Implemented: Basic validation errors
if (!req.body.email) {
  return res.status(400).json({ error: 'Email required' });
}

// ❌ Missing: Network error handling (specified in REQ-ERROR-1)
// ❌ Missing: Database connection failures
// ❌ Missing: Rate limit exceeded responses

// Review Action: Agent needs to implement complete error handling

// Agent misunderstood specification requirement
// @spec REQ-PERF-1: Signup completes within 2 seconds

// ❌ Agent interpreted as: Individual operations must be fast
const user = await User.create(data);        // 50ms
const session = await Session.create(data);  // 30ms  
await emailService.send(email);              // 1200ms (not awaited)

// ✅ Correct interpretation: Total user-facing response time < 2s
// Fix: Background email processing, return 201 immediately

┌─────────────────────────────────────────────────────────────┐
│ SPEC-AUTH-001/API-AUTH-1: POST /auth/signup                │
├─────────────────────────────────────────────────────────────┤
│ ✅ Request Format: { email, password }                     │
│ ✅ Success Response: 201 with { user_id, message }         │
│ ❌ Error Response: 400 for validation (missing 409, 422)   │
│ ✅ Password Hashing: bcrypt with cost=12                   │
│ ❌ Rate Limiting: 5 attempts per IP per hour (missing)     │
│ ❌ Audit Logging: Log all signup attempts (missing)        │
│ ✅ Email Validation: Server-side format check             │
│ ⚠️  Performance: <2s response (needs testing)              │
└─────────────────────────────────────────────────────────────┘

Review Status: 5/8 requirements complete (63%)
Action Required: Implement missing requirements before approval

// @spec REQ-PERF-1: Signup completes within 2 seconds (p95)

// Review Checklist:
// ✅ Database queries are optimized (User.create uses prepared statements)
// ❌ Email sending not moved to background queue
// ❓ Need load testing to verify p95 performance under realistic conditions

// Performance Test Results:
// Current: 1.8s average, 3.2s p95 (FAILS requirement)
// Bottleneck: Synchronous email sending (1.2s average)
// Fix: Implement background email queue

// @spec REQ-SEC-1: Password hashing with bcrypt (cost=12)
// @spec REQ-SEC-2: Session tokens must be UUID v4
// @spec REQ-SEC-3: HTTPS required for all auth endpoints

// Security Review Checklist:
// ✅ bcrypt.hash(password, 12) - Correct implementation
// ✅ session.token = uuid.v4() - Proper token generation  
// ❌ No HTTPS enforcement in middleware (missing)
// ❌ No timing attack protection (constant-time responses)
// ❌ No input sanitization beyond validation

// Security Risk: Medium
// Critical gaps: HTTPS enforcement, timing attack protection

// @spec REQ-REL-1: Failed logins logged for security audit
// @spec REQ-REL-2: Session cleanup job runs hourly

// Reliability Review:
// ❌ No audit logging implemented
// ❌ No session cleanup job created
// ✅ Database constraints prevent duplicate emails
// ❓ Error handling needs comprehensive testing

// Operational Risk: High
// Missing: Audit trail, session management, monitoring

// Review @spec comment quality and accuracy

// ✅ Good traceability:
// @spec SPEC-AUTH-001/REQ-SEC-1: Password hashing with bcrypt
const hash = await bcrypt.hash(req.body.password, 12);

// ❌ Poor traceability:  
const userData = processUserData(req.body); // No @spec comment - orphaned code

// ❓ Unclear traceability:
// @spec SPEC-AUTH-001: General auth implementation  
if (complexBusinessLogic()) { /* Which specific requirement? */ }

// Traceability Score: 73% (needs improvement)
// Action: Add specific @spec comments to all implementation code

// Review agent's architectural choices against specifications

// @spec SPEC-AUTH-001/ARCHITECTURE: Clean Architecture pattern

// ✅ Agent followed layered architecture:
// - Controllers handle HTTP requests
// - Services contain business logic  
// - Repositories manage data access

// ❓ Agent created new patterns not in existing codebase:
// - Custom validation decorators (not used elsewhere)
// - Different error handling pattern (inconsistent)

// Recommendation: 
// - Keep clean architecture (aligns with spec)
// - Standardize on existing codebase patterns for consistency

┌─────────────────────────────────────────────────────────┐
│ Real-Time Review Dashboard                              │
├─────────────────────────────────────────────────────────│
│ Feature: User Authentication (SPEC-AUTH-001)           │
│                                                         │
│ Overall Implementation: 67% Complete                   │
│ ████████████████████████████████░░░░░░░░░░░░░░░        │
│                                                         │
│ By Category:                                            │
│ ✅ Data Models: 2/2 (100%)                             │
│ 🟡 API Endpoints: 3/5 (60%)                           │
│ 🔴 UI Components: 1/4 (25%)                           │
│ ⚪ Security: 0/3 (0%)                                 │
│                                                         │
│ Critical Missing:                                       │
│ • Rate limiting (REQ-PERF-1)                           │
│ • HTTPS enforcement (REQ-SEC-3)                        │
│ • Audit logging (REQ-REL-1)                            │
│                                                         │
│ Recent Agent Activity:                                  │
│ • 2 hours ago: Implemented password hashing            │
│ • 1 hour ago: Added email validation                   │
│ • 30 mins ago: Created User model                      │
└─────────────────────────────────────────────────────────┘

# IDE Plugin: Review > Show Missing Requirements
# Opens split view with all unimplemented specs

Missing Requirements (5):
├── REQ-PERF-1: Rate limiting (Critical)
├── REQ-SEC-3: HTTPS enforcement (Critical)  
├── REQ-REL-1: Audit logging (Important)
├── REQ-UI-3: Accessibility support (Important)
└── REQ-TEST-1: End-to-end tests (Nice to have)

# Batch Actions:
[ Assign to Agent ] [ Create Tasks ] [ Mark as Reviewed ]

# IDE Plugin: Review > Show Recent Agent Activity
# Shows all code modified by agents in the last review cycle

Agent Changes (8 files):
├── ✅ src/auth/signup.ts (SPEC-AUTH-001/API-AUTH-1)
├── ✅ src/models/User.ts (SPEC-AUTH-001/MODEL-USER)
├── ⚠️  src/utils/validation.ts (Orphaned - no spec link)
├── 🔴 src/auth/middleware.ts (Incomplete - missing HTTPS)
└── ... 4 more files

# Actions per file:
[ Approve ] [ Request Changes ] [ Add Spec Links ]

interface SpecGapAnalysis {
  totalRequirements: number;
  implementedRequirements: number;
  missingRequirements: SpecRequirement[];
  orphanedCode: OrphanedCodeSection[];
  coveragePercentage: number;
  riskLevel: 'low' | 'medium' | 'high' | 'critical';
}

// Current Analysis:
{
  totalRequirements: 23,
  implementedRequirements: 15,
  missingRequirements: [
    { id: "REQ-PERF-1", priority: "critical", effort: "2h" },
    { id: "REQ-SEC-3", priority: "critical", effort: "1h" },
    { id: "REQ-REL-1", priority: "important", effort: "4h" }
  ],
  orphanedCode: [
    { file: "utils/legacy.ts", lines: 45, riskLevel: "low" }
  ],
  coveragePercentage: 65.2,
  riskLevel: "medium" // Missing critical security requirements
}

SPEC-AUTH-001 Review Team:
├── Security Review: @security-team
│   ├── REQ-SEC-1: Password hashing ✅ Approved
│   ├── REQ-SEC-2: Session management ⏳ Pending
│   └── REQ-SEC-3: HTTPS enforcement ❌ Not implemented
├── Performance Review: @performance-team  
│   ├── REQ-PERF-1: Response times ⚠️ Needs load testing
│   └── REQ-PERF-2: Concurrency ⏳ Pending
└── UX Review: @design-team
    ├── REQ-UI-1: Form validation ❌ Not implemented
    └── REQ-A11Y-1: Accessibility ❌ Not implemented

Review Progress Dashboard:
┌─────────────────────────────────────────┐
│ SPEC-AUTH-001 Review Status            │
├─────────────────────────────────────────│
│ Security Team: 1/3 approved (33%)      │
│ Performance Team: 0/2 approved (0%)    │  
│ Design Team: 0/2 approved (0%)         │
│ Overall: 1/7 requirements approved     │
│                                         │
│ Blockers:                               │
│ • Missing HTTPS enforcement (critical) │
│ • No performance testing completed     │
│ • UI components not implemented        │
│                                         │
│ Next Actions:                           │
│ • Assign REQ-SEC-3 to agent            │
│ • Schedule performance testing          │  
│ • Create UI implementation tasks        │
└─────────────────────────────────────────┘

## Agent Implementation Summary
**Agent**: dev-agent-v2.1
**Specification**: SPEC-AUTH-001 (User Authentication)
**Implementation Time**: 2.5 hours  
**Confidence**: 85%

### Completed Requirements (5/8)
✅ REQ-VAL-1: Email validation - `src/auth/signup.ts:23`
✅ REQ-SEC-1: Password hashing - `src/auth/signup.ts:31`  
✅ MODEL-USER: User data model - `src/models/User.ts`
✅ API-AUTH-1: Basic signup endpoint - `src/auth/signup.ts`
✅ WORKFLOW-AUTH-1: Core signup flow - End-to-end implementation

### Missing Requirements (3/8)
❌ REQ-PERF-1: Rate limiting (Agent Note: Needs Redis configuration)
❌ REQ-SEC-3: HTTPS enforcement (Agent Note: Middleware pattern unclear)
❌ REQ-REL-1: Audit logging (Agent Note: Logging service not available)

### Implementation Decisions Made
1. **Database Layer**: Used existing TypeORM patterns from User model
2. **Validation**: Implemented server-side only (client-side in separate task)
3. **Error Handling**: Followed existing API error response format
4. **Password Storage**: bcrypt cost=12 (exceeded minimum requirement of 10)

### Human Review Needed
1. **Architecture**: Verify signup flow integrates with existing auth system
2. **Security**: Validate bcrypt implementation meets security standards  
3. **Performance**: Load test signup endpoint before enabling rate limiting
4. **UX**: Review error messages for user-friendliness

### Agent Confidence Issues
- **REQ-PERF-1**: Uncertain about Redis configuration for rate limiting
- **Middleware Integration**: Unclear how to integrate HTTPS enforcement
- **Audit Logging**: No established logging service pattern in codebase

## Review Feedback for Agent
**Reviewer**: @senior-dev
**Status**: Approved with Changes
**Review Time**: 45 minutes

### Approved Requirements ✅
- REQ-VAL-1: Email validation (Good implementation)
- REQ-SEC-1: Password hashing (Exceeds requirements - excellent)
- MODEL-USER: User model (Follows established patterns)

### Changes Requested 🔄

#### REQ-PERF-1: Rate Limiting
**Issue**: Redis dependency not configured in project
**Solution**: Use in-memory rate limiting for MVP, Redis for production
**Implementation**: Install `express-rate-limit` package, configure for 5 attempts/hour
**Agent Task**: Implement rate limiting with fallback strategy

#### REQ-SEC-3: HTTPS Enforcement  
**Issue**: Missing middleware integration
**Solution**: Add to existing `src/middleware/security.ts`
**Example Pattern**: Follow CORS middleware pattern in same file
**Agent Task**: Add HTTPS enforcement to security middleware

#### Code Quality Issues
1. **Error Messages**: Too technical for end users
   - Change: "Invalid email format" → "Please enter a valid email address"
2. **Validation**: Add password strength requirements
   - Must include: 8+ chars, uppercase, lowercase, number
3. **Testing**: Missing unit tests for edge cases
   - Add tests for: duplicate email, weak password, invalid input

### Architecture Feedback
✅ **Good**: Clean separation between validation, hashing, and storage
✅ **Good**: Consistent error handling with existing API patterns  
⚠️  **Improve**: Add input sanitization before validation
⚠️  **Improve**: Consider extracting validation logic to shared utility

### Next Steps
1. Agent implements requested changes
2. Security team review of HTTPS implementation  
3. Load testing after rate limiting is added
4. Final approval after all changes complete

**Estimated completion**: 3-4 hours additional agent work