arela/DOCUMENTATION_INDEX.md

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# Arela Documentation Index

## Overview
This folder contains comprehensive documentation of the Arela v3.7.0 codebase, exploring its architecture, implementation, and readiness for Phase 2 (Slice Detection) development.

**Total Documentation:** 72 KB across 3 main documents

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## Files Overview

### 1. EXPLORATION_SUMMARY.md
**Best for:** Quick overview, executive summary, next steps
**Length:** 12 KB (~400 lines)
**Contains:**
- Quick answers to all 6 questions
- Key findings & quality assessment
- Phase 2 readiness scorecard (95% ready)
- Estimated effort for Phase 2 (5-8 hours)
- Real-world data example
- Immediate next steps

**Read this first if:** You want a quick overview of the codebase status

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### 2. CODEBASE_OVERVIEW.md
**Best for:** Architecture deep dive, technical reference
**Length:** 28 KB (~950 lines)
**Contains:**
- Complete src/ directory structure (15 subdirectories)
- Full GraphDB schema (8 tables with indexes)
- GraphDB class API reference
- All CLI commands (15+ subcommands)
- Complete type system documentation
- Database architecture and storage layers
- Phase 1 completion status
- Phase 2 development plan

**Read this when:** You need technical details about architecture, database schema, or available types

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### 3. DETAILED_ANSWERS.md
**Best for:** Deep dive on specific topics, code examples, patterns
**Length:** 32 KB (~1,050 lines)
**Contains:**
- Detailed answers to all 6 questions
- Code examples and patterns
- SQL query examples
- All type definitions with explanations
- Real-world statistics
- Phase 2 readiness assessment
- Technology stack details
- Development recommendations

**Read this when:** You need implementation details, code examples, or specific technical information

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## How to Use These Documents

### For Managers/Decision-Makers
1. Read **EXPLORATION_SUMMARY.md** for status (5 min)
2. Check Phase 2 readiness section (1 min)
3. Done! You have the executive summary.

### For Developers Starting Phase 2
1. **Start here:** EXPLORATION_SUMMARY.md (quick overview)
2. **Then read:** CODEBASE_OVERVIEW.md (architecture foundation)
3. **Deep dive:** DETAILED_ANSWERS.md (implementation details)
4. **Code:** Study `src/ingest/graph-builder.ts` and `src/analyze/coupling.ts`
5. **Implement:** Louvain clustering in `src/detect/clustering.ts`

### For Code Review
1. Reference **CODEBASE_OVERVIEW.md** for style/patterns
2. Check **DETAILED_ANSWERS.md** for type definitions
3. Review existing code in src/ following documented patterns

### For Integration Testing
1. See **DETAILED_ANSWERS.md** - "Real-World Data Example"
2. Use Stride codebase (3,668 files) as test case
3. Validate against documented performance (3.91 seconds)

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## Quick Navigation by Topic

### Architecture & Structure
- **CODEBASE_OVERVIEW.md** - Section 1: Directory structure
- **DETAILED_ANSWERS.md** - Question 1: Overall structure

### Graph Database
- **CODEBASE_OVERVIEW.md** - Section 2: Graph DB implementation
- **DETAILED_ANSWERS.md** - Question 2: Graph DB details
- **Code reference:** `src/ingest/storage.ts`

### CLI System
- **CODEBASE_OVERVIEW.md** - Section 3: CLI structure
- **DETAILED_ANSWERS.md** - Question 3: CLI patterns
- **Code reference:** `src/cli.ts`

### Type System
- **CODEBASE_OVERVIEW.md** - Section 4: Types & interfaces
- **DETAILED_ANSWERS.md** - Question 4: All type definitions
- **Code references:**
  - `src/ingest/types.ts`
  - `src/memory/types.ts`
  - `src/analyze/types.ts`
  - `src/types.ts`

### Database Details
- **CODEBASE_OVERVIEW.md** - Section 5: Database system
- **DETAILED_ANSWERS.md** - Question 5: Storage architecture
- **Code reference:** `src/ingest/storage.ts`

### Phase 1 Status
- **CODEBASE_OVERVIEW.md** - Section 6: Phase 1 implementation
- **DETAILED_ANSWERS.md** - Question 6: Building on Phase 1
- **Code references:** `src/analyze/`, `src/ingest/`, `src/memory/`

### Phase 2 Planning
- **EXPLORATION_SUMMARY.md** - Phase 2 Readiness section
- **CODEBASE_OVERVIEW.md** - Section 7: Phase 2 plan
- **DETAILED_ANSWERS.md** - Phase 2 readiness checklist

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## Key Statistics

### Codebase Size
- **TypeScript files:** 57
- **Lines of code:** ~4,000-5,000
- **Directories:** 15 subdirectories
- **Database tables:** 8

### Performance (Real Data)
- **Files ingested:** 3,585
- **Imports mapped:** 23,502
- **Functions identified:** 56,957
- **Ingest time:** 3.91 seconds
- **Database size:** ~200-300 MB

### Phase 2 Readiness
- **Already built:** 95%
- **Still needed:** 5% (clustering + detection logic)
- **Estimated effort:** 5-8 hours
- **Effort breakdown:**
  - Louvain algorithm: 1-2 hours
  - Slice detection: 2-3 hours
  - CLI integration: 1 hour
  - Testing: 1-2 hours

### Documentation Generated
- **Total size:** 72 KB
- **Total lines:** ~2,400
- **Files:** 3 markdown documents
- **Coverage:** Complete codebase + recommendations

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## Phase 2 Development Roadmap

### Week 1: Foundation
- [ ] Read all documentation (2 hours)
- [ ] Create `src/detect/` directory structure
- [ ] Review existing graph data and queries

### Week 2: Implementation
- [ ] Implement Louvain algorithm (2-3 hours)
- [ ] Build slice detection engine (2-3 hours)
- [ ] Add CLI commands (1 hour)

### Week 3: Testing & Polish
- [ ] Test on Stride codebase (3,668 files)
- [ ] Validate clustering quality
- [ ] Performance optimization
- [ ] Documentation

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## Reference Information

### Technology Stack
- **Runtime:** Node.js 18+
- **Language:** TypeScript 5.3
- **Database:** SQLite (better-sqlite3 v11)
- **CLI Framework:** Commander.js v12
- **AST Parsing:** ts-morph v21
- **Validation:** Zod v3.23

### Key Files to Study
1. `src/ingest/storage.ts` - GraphDB implementation (298 lines)
2. `src/ingest/graph-builder.ts` - Graph construction (228 lines)
3. `src/analyze/coupling.ts` - Coupling metrics
4. `src/analyze/cohesion.ts` - Cohesion metrics
5. `src/memory/graph.ts` - Graph querying interface
6. `src/cli.ts` - CLI command patterns (699 lines)

### Documents to Reference During Development
1. **CODEBASE_OVERVIEW.md** - Architecture & patterns
2. **DETAILED_ANSWERS.md** - Type definitions & examples
3. Existing code in `src/` - Implementation patterns

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## Support & Questions

### If You Want to Understand...

**"How does the codebase ingestion work?"**
- Read: CODEBASE_OVERVIEW.md - Section 2 (Graph DB)
- Then: Study `src/ingest/index.ts` and `src/ingest/graph-builder.ts`

**"What types should I use for Phase 2?"**
- Read: DETAILED_ANSWERS.md - Question 4 (Types)
- Then: Check `src/ingest/types.ts` for patterns

**"How should I extend the CLI?"**
- Read: DETAILED_ANSWERS.md - Question 3 (CLI patterns)
- Then: Study `src/cli.ts` lines 13-200 for registration pattern

**"What data is available from the graph?"**
- Read: CODEBASE_OVERVIEW.md - Section 2 (GraphDB queries)
- Then: Study `src/memory/graph.ts` for query examples

**"How long should Phase 2 take?"**
- Read: EXPLORATION_SUMMARY.md - Phase 2 Readiness
- Summary: 5-8 hours for Louvain + slice detection + CLI

**"What's already been done?"**
- Read: DETAILED_ANSWERS.md - Question 6 (Phase 1 status)
- Summary: Everything except clustering algorithm + detection logic

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## Next Actions

### For Phase 2 Development
1. ✅ Read EXPLORATION_SUMMARY.md (10 min)
2. ✅ Read CODEBASE_OVERVIEW.md (30 min)
3. ✅ Read DETAILED_ANSWERS.md (45 min)
4. [ ] Create `src/detect/` directory
5. [ ] Study `src/ingest/graph-builder.ts`
6. [ ] Implement Louvain algorithm
7. [ ] Extend CLI with slice detection commands
8. [ ] Test on Stride codebase

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## Quality Assessment

**Codebase Rating:** Excellent (9/10)

Strengths:
- Well-organized with clear patterns
- Type-safe with comprehensive interfaces
- Production-proven on real codebases
- Follows its own VSA principles
- Easy to extend and maintain

Areas for Growth:
- Add more unit tests (currently minimal)
- Document complex algorithms more
- Add performance benchmarks

**Phase 2 Readiness:** 95%
- Foundation: Solid
- Database: Ready
- Infrastructure: Complete
- Missing: Clustering algorithm + detection logic

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## Document Maintenance

**Last Updated:** 2025-11-12
**Version:** 1.0
**Arela Version:** v3.7.0
**Coverage:** Complete codebase + Phase 2 planning

For updates, refer to:
- `CHANGELOG.md` for version history
- `.arela/tickets/` for task tracking
- `ARELA_V4_DEVELOPMENT_PLAN.md` for long-term vision