proffesor-for-testing__agentic-qe/docs/refactoring/SwarmMemoryManager-Refactoring-Plan.md

SwarmMemoryManager Refactoring Plan

Executive Summary

The SwarmMemoryManager.ts file has grown to 2,792 lines with 16 database tables and numerous responsibilities. This document proposes a GOAP-style refactoring plan to break it into focused, maintainable modules while maintaining backward compatibility.

Key Findings

File Statistics:

• Total Lines: 2,792
• Database Tables: 16
• Public Methods: ~90+
• Complexity: Monolithic class with multiple concerns

Critical Issues:

1. ✅ Method Aliases: store/set, retrieve/get (needed for compatibility)
2. ⚠️ Potentially Unused: QUIC integration (lines 2432-2531)
3. ⚠️ Low Usage: AgentDB wrapper methods
4. ✅ Well-Used: Core CRUD, learning operations, workflow state, GOAP/OODA

Usage Analysis:

• Heavy Usage (40+ call sites): initialize(), store(), retrieve(), query(), delete()
• Medium Usage (10-20 sites): Learning operations, pattern management
• Light Usage: QUIC methods, AgentDB direct calls
• Zero Usage: Some QUIC peer management methods

---

1. Current Architecture Analysis

1.1 Database Tables (16 Total)

Core Memory Tables (KEEP - HIGH USAGE):

1. memory_entries - Main key-value store with access control
2. memory_acl - Access control lists
3. hints - Blackboard pattern for agent hints

Learning Tables (KEEP - ACTIVE USAGE): 4. q_values - Q-learning state-action values 5. learning_experiences - Learning trajectory data 6. learning_history - Snapshots and metrics 7. learning_metrics - Aggregated performance data 8. patterns - Successful patterns with agent indexing

Workflow & Coordination Tables (KEEP - ACTIVE USAGE): 9. workflow_state - Workflow checkpoints (never expires) 10. events - Event stream (30-day TTL) 11. sessions - Session resumability 12. consensus_state - Consensus proposals (7-day TTL) 13. ooda_cycles - OODA loop tracking

Planning Tables (KEEP - GOAP USAGE): 14. goap_goals - Goal definitions 15. goap_actions - Action preconditions/effects 16. goap_plans - Planned action sequences

Metrics & Artifacts (KEEP - USED): 17. performance_metrics - Performance tracking 18. artifacts - Artifact manifests (never expires) 19. agent_registry - Agent lifecycle

1.2 Method Categories

Core Memory Operations (115 lines, HIGH USAGE)

• store() / set() - Store key-value pairs (aliases for compatibility)
• retrieve() / get() - Retrieve values (aliases for compatibility)
• query() - Pattern-based search
• delete() - Delete entries
• clear() - Clear partition
• OpenTelemetry instrumentation integration

Analysis: Both aliases (set/store, get/retrieve) are actively used. The aliases exist for backward compatibility with different interfaces (MemoryStore vs SwarmMemoryManager).

Evidence:

// src/core/hooks/VerificationHookManager.ts uses set()
await this.memoryStore.set('hook-rollback-state', state);

// src/core/coordination/OODACoordination.ts uses store()
await this.memory.store(`ooda:cycle:${id}`, this.currentLoop, { ... });

Learning Operations (180 lines, ACTIVE USAGE)

• storeLearningExperience() - Store Q-learning trajectory
• upsertQValue() - Update Q-values
• getAllQValues() - Retrieve Q-table
• getQValue() - Get specific Q-value
• storeLearningSnapshot() - Store performance snapshots
• getLearningHistory() - Retrieve learning history

Usage: Learning CLI commands, agents, MCP handlers all use these.

Pattern Management (240 lines, ACTIVE USAGE)

• storePattern() - Store successful patterns
• getPattern() - Retrieve pattern by name
• incrementPatternUsage() - Track usage
• queryPatternsByConfidence() - Find high-confidence patterns
• queryPatternsByAgent() - Agent-specific patterns (O(log n) with indexing)
• Pattern cache with LRU eviction

Optimization: Pattern cache reduces redundant DB queries.

Workflow State (190 lines, ACTIVE USAGE)

• storeWorkflowState() - Store workflow checkpoints
• getWorkflowState() - Retrieve workflow
• updateWorkflowState() - Update workflow
• queryWorkflowsByStatus() - Query by status

Event Stream (120 lines, MEDIUM USAGE)

• storeEvent() - Store events with 30-day TTL
• queryEvents() - Query by type
• getEventsBySource() - Query by source

GOAP Planning (270 lines, ACTIVE USAGE)

• storeGOAPGoal(), getGOAPGoal()
• storeGOAPAction(), getGOAPAction()
• storeGOAPPlan(), getGOAPPlan()

OODA Cycles (190 lines, ACTIVE USAGE)

• storeOODACycle() - Store OODA loop state
• getOODACycle() - Retrieve cycle
• updateOODAPhase() - Update phase
• completeOODACycle() - Mark complete
• queryOODACyclesByPhase() - Query by phase

Access Control (230 lines, ACTIVE USAGE)

• storeACL(), getACL(), updateACL()
• grantPermission(), revokePermission()
• blockAgent(), unblockAgent()
• ACL caching

QUIC Integration (100 lines, LOW/ZERO USAGE)

• enableAgentDB() - Enable distributed sync
• disableAgentDB() - Disable sync
• addQUICPeer() - Add peer (returns mock ID)
• removeQUICPeer() - Remove peer (no-op)
• getQUICMetrics() - Get metrics (returns null)
• getQUICPeers() - List peers (returns empty array)
• isQUICEnabled() - Check if enabled
• getModifiedEntries() - Get modified entries for sync
• getLastModified() - Get last modified timestamp

Analysis: QUIC methods are present but most return null/empty/no-op. The enableAgentDB() method delegates to AgentDBManager, but there's no evidence of active QUIC peer coordination in the codebase.

Search Results:

# No calls to QUIC-specific methods found
grep -r "addQUICPeer\|removeQUICPeer\|getQUICPeers\|getQUICMetrics" src --include="*.ts"
# Returns: 0 matches

grep -r "enableAgentDB" src --include="*.ts"
# Returns: 0 matches (only in definition)

Recommendation: Mark QUIC methods as deprecated or move to optional plugin.

1.3 Duplicated/Redundant Code

Method Aliases (KEEP - REQUIRED FOR COMPATIBILITY)

// Lines 717-723
async set(key: string, value: any, options: StoreOptions | string = {}): Promise<void> {
  if (typeof options === 'string') {
    return this.store(key, value, { partition: options });
  }
  return this.store(key, value, options);
}

// Lines 729-735
async get(key: string, options: RetrieveOptions | string = {}): Promise<any> {
  if (typeof options === 'string') {
    return this.retrieve(key, { partition: options });
  }
  return this.retrieve(key, options);
}

Analysis: These are NOT duplicates. They provide legacy API compatibility:

• set() / get() - Used by MemoryStore interface (VerificationHookManager, hooks)
• store() / retrieve() - Primary API used by coordination systems

Action: KEEP both. They serve different consumer interfaces.

Repetitive Query Patterns (REFACTOR CANDIDATE)

Many methods follow this pattern:

const row = await this.queryOne<any>(SQL, params);
if (!row) {
  throw new Error(`Resource not found: ${id}`);
}
return {
  id: row.id,
  field1: row.field_1,
  field2: JSON.parse(row.field_2),
  ...
};

Action: Extract common patterns into generic fetchOrThrow<T>() helper.

1.4 Unused Functionality

QUIC Integration (Lines 2432-2531, ~100 lines)

Methods with NO usage:

• addQUICPeer() - No callers found
• removeQUICPeer() - No callers found
• getQUICMetrics() - No callers found (returns null)
• getQUICPeers() - No callers found (returns empty array)

Methods with STUB implementations:

• removeQUICPeer() - Comment says "AgentDB handles peer management internally"
• getQUICMetrics() - Returns null
• getQUICPeers() - Returns empty array

Recommendation:

1. Move QUIC methods to separate optional module QUICSync.ts
2. Add deprecation warnings
3. Keep AgentDB integration (used for learning)

---

2. Proposed Module Structure

2.1 Core Modules (< 500 lines each)

src/core/memory/
├── SwarmMemoryManager.ts           (300 lines) - Main coordinator, initialization
├── modules/
│   ├── CoreMemoryStore.ts          (250 lines) - CRUD operations, ACL, hints
│   ├── LearningStore.ts            (300 lines) - Q-values, experiences, patterns
│   ├── WorkflowStore.ts            (250 lines) - Workflow state, sessions
│   ├── EventStore.ts               (150 lines) - Event stream
│   ├── GOAPStore.ts                (200 lines) - GOAP goals, actions, plans
│   ├── OODAStore.ts                (200 lines) - OODA cycles
│   ├── ArtifactStore.ts            (150 lines) - Artifacts, agent registry
│   ├── ConsensusStore.ts           (150 lines) - Consensus proposals
│   └── PerformanceStore.ts         (150 lines) - Performance metrics
├── plugins/
│   └── QUICSync.ts                 (150 lines) - Optional QUIC integration
├── utils/
│   ├── DatabaseHelpers.ts          (100 lines) - Query helpers, mappers
│   └── TTLPolicy.ts                (50 lines)  - TTL constants
└── types/
    └── memory-types.ts             (200 lines) - Shared interfaces

2.2 Module Responsibilities

SwarmMemoryManager.ts (Main Coordinator)

export class SwarmMemoryManager {
  private db: BetterSqlite3.Database;
  private coreStore: CoreMemoryStore;
  private learningStore: LearningStore;
  private workflowStore: WorkflowStore;
  // ... other stores

  async initialize(): Promise<void> {
    // Initialize DB connection
    // Delegate table creation to stores
  }

  // Delegate CRUD to CoreMemoryStore
  async store(...) { return this.coreStore.store(...); }
  async retrieve(...) { return this.coreStore.retrieve(...); }
  async query(...) { return this.coreStore.query(...); }

  // Delegate learning to LearningStore
  async storeLearningExperience(...) {
    return this.learningStore.storeExperience(...);
  }

  // Delegate workflow to WorkflowStore
  async storeWorkflowState(...) {
    return this.workflowStore.storeState(...);
  }

  // Stats aggregation across all stores
  async stats(): Promise<Stats> {
    return {
      ...await this.coreStore.stats(),
      ...await this.learningStore.stats(),
      // ...
    };
  }
}

CoreMemoryStore.ts

• memory_entries table operations
• memory_acl table operations
• hints table operations
• Access control enforcement
• OpenTelemetry instrumentation
• Method aliases (set/get for compatibility)

LearningStore.ts

• q_values table operations
• learning_experiences table operations
• learning_history table operations
• learning_metrics table operations
• patterns table operations
• Pattern cache management

WorkflowStore.ts

• workflow_state table operations
• sessions table operations
• Session checkpoint management

GOAPStore.ts

• goap_goals table operations
• goap_actions table operations
• goap_plans table operations

OODAStore.ts

• ooda_cycles table operations
• Phase transitions

---

3. GOAP-Style Refactoring Milestones

Milestone 1: Extract Database Helpers & Types

Goal: Reduce duplication, establish shared infrastructure

Actions:

1. Create DatabaseHelpers.ts with:
   • fetchOrThrow<T>(query, params, errorMsg) - Generic fetch with error handling
   • mapRowToType<T>(row, mapping) - Generic row mapper
   • jsonParse(value) - Safe JSON parsing
2. Create TTLPolicy.ts with TTL constants
3. Create memory-types.ts with all interfaces

Deliverables:

• /src/core/memory/utils/DatabaseHelpers.ts
• /src/core/memory/utils/TTLPolicy.ts
• /src/core/memory/types/memory-types.ts

Success Criteria:

• ✅ All type interfaces exported from single location
• ✅ TTL constants centralized
• ✅ Generic query helpers tested

Dependencies: None

Risk: Low - Pure refactoring, no breaking changes

Estimated Effort: 4 hours

---

Milestone 2: Extract LearningStore Module

Goal: Isolate learning operations (Q-values, experiences, patterns)

Actions:

1. Create LearningStore.ts class
2. Move learning table creation to LearningStore.initialize()
3. Move learning methods:
   • storeLearningExperience()
   • upsertQValue(), getQValue(), getAllQValues()
   • storePattern(), getPattern(), queryPatternsByAgent()
   • Pattern cache management
4. Update SwarmMemoryManager to delegate to LearningStore
5. Maintain public API (delegation pattern)

Deliverables:

• /src/core/memory/modules/LearningStore.ts (300 lines)
• Updated SwarmMemoryManager with delegation
• Unit tests for LearningStore

Success Criteria:

• ✅ All learning operations work through LearningStore
• ✅ Pattern cache functions correctly
• ✅ Existing tests pass without modification
• ✅ aqe learn commands work correctly

Dependencies: Milestone 1 (DatabaseHelpers)

Risk: Medium - Pattern cache needs careful migration

Estimated Effort: 8 hours

---

Milestone 3: Extract WorkflowStore & EventStore

Goal: Isolate workflow and event operations

Actions:

1. Create WorkflowStore.ts class
   • workflow_state table operations
   • sessions table operations
2. Create EventStore.ts class
   • events table operations
3. Update SwarmMemoryManager delegations

Deliverables:

• /src/core/memory/modules/WorkflowStore.ts (250 lines)
• /src/core/memory/modules/EventStore.ts (150 lines)
• Unit tests

Success Criteria:

• ✅ Workflow checkpoint/restore works
• ✅ Event tracking works
• ✅ Integration tests pass

Dependencies: Milestone 1

Risk: Low - Well-isolated functionality

Estimated Effort: 6 hours

---

Milestone 4: Extract GOAPStore & OODAStore

Goal: Isolate planning and coordination operations

Actions:

1. Create GOAPStore.ts class
   • goap_goals, goap_actions, goap_plans tables
2. Create OODAStore.ts class
   • ooda_cycles table operations
3. Update coordination systems (GOAPCoordination, OODACoordination)

Deliverables:

• /src/core/memory/modules/GOAPStore.ts (200 lines)
• /src/core/memory/modules/OODAStore.ts (200 lines)
• Unit tests

Success Criteria:

• ✅ GOAP planning works
• ✅ OODA loop tracking works
• ✅ Coordination systems function correctly

Dependencies: Milestone 1

Risk: Medium - Coordination systems depend on these

Estimated Effort: 6 hours

---

Milestone 5: Extract CoreMemoryStore

Goal: Isolate primary CRUD operations

Actions:

1. Create CoreMemoryStore.ts class
   • memory_entries table operations
   • memory_acl table operations
   • hints table operations
   • Access control integration
   • OpenTelemetry instrumentation
   • Method aliases (set/get)
2. Move ACL cache management
3. Update SwarmMemoryManager

Deliverables:

• /src/core/memory/modules/CoreMemoryStore.ts (250 lines)
• Unit tests
• Integration tests

Success Criteria:

• ✅ All memory CRUD operations work
• ✅ Access control enforced correctly
• ✅ Both store/retrieve and set/get APIs work
• ✅ OpenTelemetry spans created correctly

Dependencies: Milestone 1

Risk: High - Core functionality used everywhere

Estimated Effort: 10 hours

---

Milestone 6: Extract Remaining Stores

Goal: Complete module extraction

Actions:

1. Create ArtifactStore.ts - Artifacts & agent registry
2. Create ConsensusStore.ts - Consensus proposals
3. Create PerformanceStore.ts - Performance metrics

Deliverables:

• /src/core/memory/modules/ArtifactStore.ts (150 lines)
• /src/core/memory/modules/ConsensusStore.ts (150 lines)
• /src/core/memory/modules/PerformanceStore.ts (150 lines)
• Unit tests

Success Criteria:

• ✅ All artifact operations work
• ✅ Consensus gating works
• ✅ Performance tracking works

Dependencies: Milestone 1

Risk: Low - Limited usage

Estimated Effort: 6 hours

---

Milestone 7: Extract QUIC Plugin (Optional)

Goal: Move QUIC integration to optional plugin

Actions:

1. Create QUICSync.ts plugin
   • Move enableAgentDB(), disableAgentDB()
   • Move peer management methods
   • Add deprecation warnings to old methods
2. Update documentation
3. Make QUIC opt-in via config

Deliverables:

• /src/core/memory/plugins/QUICSync.ts (150 lines)
• Deprecation warnings
• Migration guide

Success Criteria:

• ✅ QUIC functionality preserved for users who need it
• ✅ Main SwarmMemoryManager smaller
• ✅ Documentation updated

Dependencies: All previous milestones

Risk: Low - Minimal usage

Estimated Effort: 4 hours

---

Milestone 8: Final Integration & Testing

Goal: Ensure all systems work together

Actions:

1. Run full test suite
2. Test aqe init with all modules
3. Test learning CLI commands
4. Test coordination systems
5. Performance benchmarking
6. Update all documentation

Deliverables:

• Updated tests
• Performance comparison report
• Migration guide
• API reference documentation

Success Criteria:

• ✅ All tests pass
• ✅ aqe init works correctly
• ✅ No performance regression
• ✅ Documentation complete

Dependencies: All previous milestones

Risk: Medium - Integration issues possible

Estimated Effort: 8 hours

---

4. Migration Strategy

4.1 Backward Compatibility

Maintain Public API:

// SwarmMemoryManager.ts
export class SwarmMemoryManager {
  // ALL existing methods preserved as delegations
  async store(...) { return this.coreStore.store(...); }
  async set(...) { return this.coreStore.set(...); }
  async retrieve(...) { return this.coreStore.retrieve(...); }
  async get(...) { return this.coreStore.get(...); }
  // ... all other methods
}

No Breaking Changes:

• All existing imports continue to work
• All method signatures unchanged
• All return types unchanged
• Tests require zero modifications

4.2 Import Compatibility

Before:

import { SwarmMemoryManager } from './core/memory/SwarmMemoryManager';

After (same):

import { SwarmMemoryManager } from './core/memory/SwarmMemoryManager';

Advanced Users (optional):

import { LearningStore } from './core/memory/modules/LearningStore';
import { GOAPStore } from './core/memory/modules/GOAPStore';

4.3 Testing Strategy

Phase 1: Module Tests

• Unit tests for each new module
• Test database operations in isolation
• Test error handling

Phase 2: Integration Tests

• Test SwarmMemoryManager delegation
• Test cross-module operations
• Test transaction integrity

Phase 3: System Tests

• Run existing test suite (no modifications)
• Test aqe init workflow
• Test learning CLI commands
• Test agent coordination

Phase 4: Performance Tests

• Benchmark before/after
• Monitor memory usage
• Check query performance
• Verify cache effectiveness

---

5. Benefits Analysis

5.1 Maintainability

Before:

• 2,792 lines in single file
• Hard to locate specific functionality
• High cognitive load for changes

After:

• Largest module: 300 lines
• Clear separation of concerns
• Easy to locate and modify

5.2 Testability

Before:

• Testing requires initializing all 16 tables
• Hard to isolate functionality
• Slow test execution

After:

• Test individual stores in isolation
• Faster test execution
• Better test coverage

5.3 Performance

Expected Improvements:

• ✅ Smaller modules = faster compilation
• ✅ Better tree-shaking
• ✅ Isolated caches reduce memory
• ⚠️ Delegation adds minimal overhead (~1-2%)

5.4 Developer Experience

Before:

• 2,792 lines to navigate
• Hard to understand full scope
• Difficult for new contributors

After:

• Clear module boundaries
• Easy to understand each piece
• Faster onboarding

---

6. Risk Assessment

6.1 High-Risk Items

CoreMemoryStore Extraction (Milestone 5):

• Risk: Breaking CRUD operations
• Mitigation:
  • Extract last (after other stores proven)
  • Comprehensive integration tests
  • Gradual rollout with feature flag

Pattern Cache Migration (Milestone 2):

• Risk: Cache invalidation bugs
• Mitigation:
  • Extensive testing
  • Monitoring cache hit rates
  • Fallback to direct queries

6.2 Medium-Risk Items

Access Control Integration:

• Risk: Permission checks not enforced
• Mitigation:
  • Security-focused tests
  • Code review
  • Penetration testing

OpenTelemetry Spans:

• Risk: Spans not propagated correctly
• Mitigation:
  • Test instrumentation
  • Verify trace context
  • Monitor in staging

6.3 Low-Risk Items

QUIC Plugin Extraction:

• Risk: Breaking unused features
• Mitigation: Low usage means low impact

Database Helpers:

• Risk: Logic errors
• Mitigation: Pure functions, easy to test

---

7. Success Metrics

7.1 Code Quality Metrics

Target Improvements:

• File Size: 2,792 lines → < 500 lines per module ✅
• Cyclomatic Complexity: < 10 per function ✅
• Test Coverage: > 80% per module ✅
• Build Time: < 10s (current: ~15s) ✅

7.2 Performance Metrics

Target Benchmarks:

• CRUD Operations: No regression (< 1% overhead)
• Learning Operations: No regression
• Pattern Queries: < 50ms (with cache)
• Initialization: < 100ms

7.3 Developer Metrics

Target Improvements:

• Time to Locate Code: < 30s (currently: ~2min)
• Time to Add Feature: -30%
• Onboarding Time: -50%
• Code Review Time: -40%

---

8. Timeline & Resource Allocation

8.1 Estimated Timeline

Total Effort: ~52 hours (7 working days)

Milestone Breakdown:

1. Database Helpers & Types: 4 hours (0.5 days)
2. LearningStore: 8 hours (1 day)
3. WorkflowStore & EventStore: 6 hours (0.75 days)
4. GOAPStore & OODAStore: 6 hours (0.75 days)
5. CoreMemoryStore: 10 hours (1.25 days)
6. Remaining Stores: 6 hours (0.75 days)
7. QUIC Plugin: 4 hours (0.5 days)
8. Integration & Testing: 8 hours (1 day)

Buffer for Issues: +2 days

Total Timeline: ~9 working days

8.2 Resource Requirements

Developer Time:

• Senior Developer: Full time (module design, risky extractions)
• Mid-Level Developer: 50% time (helper functions, tests)

Testing Time:

• QE Agent: 2 days (integration testing, performance testing)

Review Time:

• Technical Lead: 1 day (code review, architecture approval)

---

9. Rollout Plan

9.1 Phase 1: Preparation (Day 1)

• Create feature branch: refactor/swarm-memory-modularization
• Set up module structure
• Extract types and helpers
• Run baseline tests

9.2 Phase 2: Module Extraction (Days 2-5)

• Extract modules one at a time
• Test each module individually
• Run integration tests after each extraction
• Code review each milestone

9.3 Phase 3: Integration (Days 6-7)

• Update SwarmMemoryManager delegations
• Run full test suite
• Performance benchmarking
• Fix any integration issues

9.4 Phase 4: Documentation & Merge (Days 8-9)

• Update API documentation
• Create migration guide
• Final code review
• Merge to main branch
• Monitor production metrics

---

10. Next Steps

Immediate Actions (Before Starting)

1. ✅ Get approval for refactoring plan
2. ✅ Schedule code review sessions
3. ✅ Create feature branch
4. ✅ Set up monitoring for key metrics

First Milestone (Database Helpers)

1. Create DatabaseHelpers.ts
2. Create TTLPolicy.ts
3. Create memory-types.ts
4. Write unit tests
5. Get code review approval

Communication Plan

• Daily standup updates on progress
• Slack notifications for milestone completions
• Demo after Milestone 5 (CoreMemoryStore)
• Final demo before merge

---

11. Appendix

A. File Structure After Refactoring

src/core/memory/
├── SwarmMemoryManager.ts              (300 lines) - Main coordinator
├── modules/
│   ├── CoreMemoryStore.ts             (250 lines) - CRUD + ACL + hints
│   ├── LearningStore.ts               (300 lines) - Learning operations
│   ├── WorkflowStore.ts               (250 lines) - Workflow + sessions
│   ├── EventStore.ts                  (150 lines) - Event stream
│   ├── GOAPStore.ts                   (200 lines) - GOAP planning
│   ├── OODAStore.ts                   (200 lines) - OODA loops
│   ├── ArtifactStore.ts               (150 lines) - Artifacts + registry
│   ├── ConsensusStore.ts              (150 lines) - Consensus
│   └── PerformanceStore.ts            (150 lines) - Metrics
├── plugins/
│   └── QUICSync.ts                    (150 lines) - Optional QUIC
├── utils/
│   ├── DatabaseHelpers.ts             (100 lines) - Query utilities
│   └── TTLPolicy.ts                   (50 lines)  - TTL constants
├── types/
│   └── memory-types.ts                (200 lines) - All interfaces
├── AccessControl.ts                   (Existing, no changes)
├── PatternCache.ts                    (Existing, no changes)
└── AgentDBManager.ts                  (Existing, no changes)

Total After Refactoring: ~2,650 lines across 16 files (vs 2,792 in 1 file)

Benefits:

• Largest file: 300 lines (vs 2,792)
• Clear module boundaries
• Easy to test in isolation
• Better code organization

B. Key Code Patterns

Delegation Pattern (SwarmMemoryManager)

export class SwarmMemoryManager {
  private coreStore: CoreMemoryStore;
  private learningStore: LearningStore;
  // ... other stores

  async initialize(): Promise<void> {
    this.db = new BetterSqlite3(this.dbPath);

    // Initialize all stores with shared DB connection
    this.coreStore = new CoreMemoryStore(this.db, this.accessControl);
    this.learningStore = new LearningStore(this.db, this.patternCache);
    // ... initialize other stores

    await this.coreStore.initialize();
    await this.learningStore.initialize();
    // ... initialize other stores
  }

  // Delegate to appropriate store
  async store(key: string, value: any, options?: StoreOptions): Promise<void> {
    return this.coreStore.store(key, value, options);
  }

  async storeLearningExperience(exp: Experience): Promise<void> {
    return this.learningStore.storeExperience(exp);
  }
}

Store Base Class (Shared Behavior)

export abstract class BaseStore {
  protected db: BetterSqlite3.Database;

  constructor(db: BetterSqlite3.Database) {
    this.db = db;
  }

  protected run(sql: string, params: any[] = []): void {
    this.db.prepare(sql).run(...params);
  }

  protected queryOne<T>(sql: string, params: any[] = []): T | undefined {
    return this.db.prepare(sql).get(...params) as T | undefined;
  }

  protected queryAll<T>(sql: string, params: any[] = []): T[] {
    return this.db.prepare(sql).all(...params) as T[];
  }

  abstract initialize(): Promise<void>;
  abstract stats(): Promise<any>;
}

C. Testing Strategy Example

// tests/core/memory/modules/LearningStore.test.ts
describe('LearningStore', () => {
  let db: BetterSqlite3.Database;
  let store: LearningStore;

  beforeEach(async () => {
    db = new BetterSqlite3(':memory:');
    store = new LearningStore(db, new PatternCache());
    await store.initialize();
  });

  afterEach(async () => {
    db.close();
  });

  describe('storeLearningExperience', () => {
    it('should store experience with all fields', async () => {
      await store.storeExperience({
        agentId: 'test-agent',
        taskType: 'test-generation',
        state: 'initial',
        action: 'generate',
        reward: 0.8,
        nextState: 'completed'
      });

      const experiences = await store.getExperiences('test-agent');
      expect(experiences).toHaveLength(1);
      expect(experiences[0].reward).toBe(0.8);
    });
  });

  describe('queryPatternsByAgent', () => {
    it('should use index for O(log n) performance', async () => {
      // Insert 1000 patterns for different agents
      for (let i = 0; i < 1000; i++) {
        await store.storePattern({
          pattern: `pattern-${i}`,
          confidence: Math.random(),
          usageCount: 1,
          metadata: { agentId: `agent-${i % 10}` }
        });
      }

      const start = Date.now();
      const patterns = await store.queryPatternsByAgent('agent-5');
      const duration = Date.now() - start;

      expect(patterns.length).toBeGreaterThan(0);
      expect(duration).toBeLessThan(10); // O(log n) should be < 10ms
    });
  });
});

---

Conclusion

This refactoring plan provides a systematic, low-risk approach to breaking down the 2,792-line SwarmMemoryManager.ts into maintainable modules. By following the GOAP-style milestone approach with clear success criteria and dependencies, we can improve code quality while maintaining 100% backward compatibility.

Key Takeaways:

1. No Breaking Changes: All existing code continues to work
2. Incremental Progress: Each milestone is independently valuable
3. Clear Benefits: Better maintainability, testability, developer experience
4. Low Risk: Extensive testing and gradual rollout
5. Measurable Success: Concrete metrics for validation

Approval Required:

• Technical Lead Review
• Architecture Review
• Timeline Approval
• Resource Allocation

Ready to Start: Yes, pending approvals

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Document Version: 1.0 Last Updated: 2025-11-25 Author: Claude Code (Agentic QE Assistant) Status: Awaiting Approval