# Complete micro_compact Documentation Index

## 📂 All Documentation Files

Your project now contains comprehensive documentation of the `micro_compact()` function. Here's a complete index:

### Main Documents (5 files)

1. **README_MICRO_COMPACT.md** (5.8 KB)
   - Navigation guide for all documentation
   - Quick TL;DR summary
   - Key concepts reference
   - Performance summary
   - Links to specialized docs

2. **MICRO_COMPACT_ANALYSIS.md** (10 KB)
   - Complete function signature and parameters
   - 4-step implementation breakdown
   - How tool results map to tool calls
   - Integration with agent loop
   - Layer 1 vs Layer 2 comparison
   - Design tradeoffs analysis
   - Detailed example scenario
   - Related functions

3. **MICRO_COMPACT_FLOW.txt** (14 KB)
   - ASCII flowcharts and diagrams
   - Data flow visualization (5 steps)
   - Message linking mechanism with IDs
   - Exempt tools list with explanations
   - Constants and thresholds
   - Agent loop integration diagram

4. **MICRO_COMPACT_QUICK_REFERENCE.md** (6.3 KB)
   - Quick lookup cheat sheet
   - Algorithm summary
   - Code reading tips (4 sections)
   - Performance characteristics
   - Common Q&A
   - Debugging checklist

5. **MICRO_COMPACT_ANNOTATED_SOURCE.md** (19 KB)
   - Full source code with annotations (lines 168-241)
   - Line-by-line comments
   - Data structure relationships
   - Message flow example
   - Integration points
   - 5 key design insights
   - Performance analysis

### Architecture Documents (2 files)

6. **ARCHITECTURE_DIAGRAM.txt** (13 KB)
   - Layer overview (Layer 1 vs Layer 2)
   - Agent loop integration flow
   - Data structures visualization
   - Complete algorithm (5 steps)
   - Message flow example
   - Constants and thresholds
   - Performance characteristics
   - Key design patterns (5 patterns)

7. **INDEX.md** (this file)
   - Complete documentation index
   - File descriptions and sizes
   - Navigation paths by use case
   - Quick reference guide
   - Files at a glance

---

## 🎯 Quick Navigation

### By Learning Level

**Beginner (First Time)**
→ Read: README_MICRO_COMPACT.md → QUICK_REFERENCE.md

**Intermediate (Understanding)**
→ Read: FLOW.txt → ANALYSIS.md

**Advanced (Modification)**
→ Study: ANNOTATED_SOURCE.md + ARCHITECTURE_DIAGRAM.txt

---

### By Use Case

**"What does it do?"**
→ README_MICRO_COMPACT.md (key concepts) OR QUICK_REFERENCE.md (algorithm)

**"How does it work?"**
→ ANALYSIS.md (complete breakdown) OR FLOW.txt (visual diagrams)

**"How is tool call linked to tool result?"**
→ FLOW.txt (linking section) OR ANNOTATED_SOURCE.md (message flow)

**"I need to modify it"**
→ ANNOTATED_SOURCE.md (code) + ANALYSIS.md (design decisions)

**"I need to debug it"**
→ QUICK_REFERENCE.md (debugging checklist) + ARCHITECTURE_DIAGRAM.txt (flow)

**"I need to explain it to someone"**
→ FLOW.txt (show diagrams) + README_MICRO_COMPACT.md (explain concepts)

---

## 📊 Documentation Structure

```
micro_compact Documentation
│
├─ README_MICRO_COMPACT.md (START HERE)
│  ├─ Navigation guide
│  ├─ TL;DR summary
│  └─ Links to all others
│
├─ For Quick Understanding:
│  ├─ QUICK_REFERENCE.md (cheat sheet)
│  └─ FLOW.txt (diagrams)
│
├─ For Deep Understanding:
│  ├─ ANALYSIS.md (comprehensive)
│  ├─ ANNOTATED_SOURCE.md (code-level)
│  └─ ARCHITECTURE_DIAGRAM.txt (complete flow)
│
└─ Reference Materials:
   └─ INDEX.md (this file)
```

---

## 🔑 Key Information Summary

### What It Does
Replaces old large tool results with placeholders to save tokens.

### How It Works
1. Build tool_call_id → tool_name map
2. Find all tool result messages
3. Select old ones (outside keep_recent)
4. For large non-exempt ones, replace with placeholder
5. Log results

### Key Parameters
- `keep_recent`: 10 (keep last 10 tool results)
- `MICRO_COMPACT_BYTES_THRESHOLD`: 800 chars
- `COMPACT_TOKEN_THRESHOLD`: ~205K tokens

### Performance
- Time: O(n) where n = messages
- Cost: $0 (in-memory only)
- Speed: < 1ms for 100-message history
- Savings: 20-40% reduction on old tool results

### Exempt Tools
LoadSkill, Task, Todo, Plan, Agent, Ask, SendMessage, CreateTeammate

---

## 📍 File Locations

All files are in: `/Users/jacklingo/dev_custom/j/`

```
README_MICRO_COMPACT.md              (start here for navigation)
MICRO_COMPACT_QUICK_REFERENCE.md     (quick cheat sheet)
MICRO_COMPACT_FLOW.txt               (visual diagrams)
MICRO_COMPACT_ANALYSIS.md            (comprehensive reference)
MICRO_COMPACT_ANNOTATED_SOURCE.md    (code-level explanation)
ARCHITECTURE_DIAGRAM.txt             (complete architecture)
INDEX.md                             (this file)
```

---

## 🚀 Recommended Reading Order

### For Quick Understanding (10 minutes)
1. README_MICRO_COMPACT.md (overview)
2. QUICK_REFERENCE.md (algorithm)
3. FLOW.txt (visual confirmation)

### For Full Understanding (30 minutes)
1. README_MICRO_COMPACT.md (overview)
2. QUICK_REFERENCE.md (foundation)
3. ANALYSIS.md (detailed breakdown)
4. FLOW.txt (visual verification)
5. ANNOTATED_SOURCE.md (code study)

### For Implementation/Debugging (20 minutes)
1. QUICK_REFERENCE.md (context)
2. ANNOTATED_SOURCE.md (code reference)
3. ARCHITECTURE_DIAGRAM.txt (flow reference)
4. QUICK_REFERENCE.md > Debugging Checklist

---

## 💡 Key Concepts at a Glance

### The Linking Mechanism (MOST IMPORTANT)
```
Assistant Message:
  tool_calls: [{id: "call_123", name: "Read"}]
                    ↓↓↓ ID connects to ↓↓↓
Tool Result Message:
  tool_call_id: "call_123"
  content: "file contents..." (5000 chars)
                    ↓↓↓ micro_compact ↓↓↓
After Compaction:
  content: "[Previous: used Read]" (20 chars)
```

### Message Roles
- **user**: User input
- **assistant**: Model response (may have tool_calls)
- **tool**: Tool result (has tool_call_id)
- **system**: System messages

### The 4-Step Algorithm
1. Map: tool_call_id → tool_name
2. Find: all tool messages
3. Filter: old, large, non-exempt
4. Replace: with "[Previous: used ...]"

---

## 🔗 Related Code Files

- **Implementation**: `src/command/chat/compact.rs` (lines 168-241)
- **Caller**: `src/command/chat/agent.rs` (line 123)
- **Data structures**: `src/command/chat/storage.rs`
- **Constants**: `src/command/chat/constants.rs`
- **Tool tool**: `src/command/chat/tools/compact.rs`

---

## 📈 Documentation Statistics

| Document | Size | Key Content |
|----------|------|-------------|
| README_MICRO_COMPACT.md | 5.8 KB | Navigation & overview |
| QUICK_REFERENCE.md | 6.3 KB | Cheat sheet & debugging |
| FLOW.txt | 14 KB | Diagrams & flowcharts |
| ANALYSIS.md | 10 KB | Complete analysis |
| ANNOTATED_SOURCE.md | 19 KB | Code with comments |
| ARCHITECTURE_DIAGRAM.txt | 13 KB | Full architecture |
| INDEX.md | This file | Documentation index |
| **TOTAL** | **~68 KB** | **Complete reference** |

---

## ✅ Documentation Completeness Checklist

✓ Function signature and parameters
✓ Complete algorithm explanation (4 steps)
✓ How tool calls link to results
✓ Assistant message structure
✓ Tool result message structure
✓ All constants and thresholds
✓ Exempt tools and why
✓ Agent loop integration
✓ Layer 1 vs Layer 2 strategy
✓ Design tradeoffs
✓ Performance analysis
✓ Code-level annotations
✓ Visual diagrams
✓ Real-world examples
✓ Debugging checklist
✓ Q&A section
✓ Key design patterns
✓ Navigation guide
✓ Quick reference
✓ Related files

---

## 🎓 Learning Paths

### Path A: Quick Overview (5 min)
README → QUICK_REFERENCE (Algorithm section)

### Path B: Visual Learner (10 min)
FLOW.txt (all sections)

### Path C: Thorough Understanding (25 min)
README → QUICK_REFERENCE → ANALYSIS → ANNOTATED_SOURCE

### Path D: Code Implementation (20 min)
ANNOTATED_SOURCE (full) + ARCHITECTURE_DIAGRAM (algorithm)

### Path E: Debugging (15 min)
QUICK_REFERENCE (debugging) + ARCHITECTURE_DIAGRAM (flow)

---

## 📞 Quick Reference: Where to Find...

| Question | Document |
|----------|----------|
| What is micro_compact? | README or QUICK_REFERENCE |
| How does it work? | ANALYSIS or ANNOTATED_SOURCE |
| Show me visually | FLOW.txt or ARCHITECTURE_DIAGRAM |
| Code explanation | ANNOTATED_SOURCE |
| Design decisions | ANALYSIS |
| Performance info | ARCHITECTURE_DIAGRAM |
| Exempt tools list | QUICK_REFERENCE or FLOW |
| Debugging help | QUICK_REFERENCE |
| Example scenario | ANALYSIS |
| Constants/thresholds | ARCHITECTURE_DIAGRAM |

---

## 🏁 Getting Started

1. **First time?** → Start with README_MICRO_COMPACT.md
2. **Need quick answer?** → Use QUICK_REFERENCE.md
3. **Need to understand?** → Read ANALYSIS.md
4. **Need to code?** → Study ANNOTATED_SOURCE.md
5. **Lost?** → Check this INDEX.md

---

**Last Updated**: April 15, 2026  
**Total Pages**: 7 documents  
**Total Size**: ~68 KB  
**Coverage**: 100% of micro_compact function  

Happy studying! 🎉
