# GIL Release Plan Review: Complete Document Index

**Date:** January 2, 2026  
**Review Status:** ✅ COMPLETE - Ready for Beads Implementation  
**Total Documents:** 6 (3 source plans + 4 new analysis documents)

---

## Source Documents (Original Plans)

### 1. GIL_RELEASE_HYBRID_IMPLEMENTATION_PLAN_REVISIONS.md (MAIN)
📍 **Location:** `docs/design/`  
📄 **Size:** 1,200+ lines  
⏱️ **Read Time:** 45-60 minutes  

**Contents:**
- §1: Overview (plan goals & context)
- §2: Critical Context (Phase B status, Phase H dependencies)
- §3: Phase C Revisions (batch reading, data structures, EOF state machine, read_batch() method)
- §4: Phase H Revisions (type detection, RustFile, CursorBackend, Rayon parallelism, backpressure)
- §5: Risk Mitigation (Rayon PoC, memory safety, testing)
- §6: Revised Task Breakdown (C.0-C.Gate, H.0-H.Gate with detailed acceptance criteria)
- §7: Diagnostic Strategy (profiling, benchmarking, troubleshooting workflows)
- §8: Execution Roadmap (4-week timeline)
- §9: Risk Register (6 risks with mitigations)
- §10: Success Metrics

**Key for:** Understanding the detailed technical specifications for Phase C & H

---

### 2. GIL_RELEASE_HYBRID_IMPLEMENTATION_PLAN_REVIEW.md
📍 **Location:** `docs/design/`  
📄 **Size:** Technical assessment document  

**Contents:** Technical review of original plan, assessment of feasibility, gaps

**Key for:** Understanding rationale behind plan decisions

---

### 3. PARALLEL_BENCHMARKING_SUMMARY.md
📍 **Location:** `docs/design/`  
📄 **Size:** Benchmark findings  

**Contents:** Results from parallel benchmarking feasibility study; identified GIL limitation that led to Phase C

**Key for:** Understanding why batch reading became prerequisite

---

## New Analysis Documents (Beads Integration)

### 4. README_BEADS_INTEGRATION.md (START HERE)
📍 **Location:** Project root  
📄 **Size:** 2 pages  
⏱️ **Read Time:** 5 minutes  

**Contents:**
- Executive summary
- Three new documents overview
- 5 critical gaps found
- Execution options (Quick Start vs Deep Dive)
- Key plan decisions
- Success criteria

**Best For:** Quick orientation, understanding what needs to be done

---

### 5. BEADS_ACTION_SUMMARY.md (QUICK REFERENCE)
📍 **Location:** Project root  
📄 **Size:** 3 pages  
⏱️ **Read Time:** 5 minutes  

**Contents:**
- 6 Critical Issues (with impact & fix)
- Required Beads Operations
- Dependency Summary (visual)
- Metrics & Gates
- Estimated Timeline
- Before You Start checklist

**Best For:** Understanding what beads commands to run

---

### 6. GIL_RELEASE_HYBRID_IMPLEMENTATION_PLAN_WITH_BEADS_MAPPING.md (DETAILED)
📍 **Location:** `docs/design/`  
📄 **Size:** 800+ lines  
⏱️ **Read Time:** 20 minutes  

**Contents:**
- §1: Detailed Beads Mapping (what exists, what's missing)
- §2: Beads Operations Summary (deletions, creations, updates)
- §3: Detailed Task Breakdown (Phase C & H tasks with plan references)
- §4: Existing Phase Updates (E, F, G)
- §5: Priority & Sequencing
- §6: Metrics & Gate Criteria
- §7: Next Steps
- §8: Key Differences from Original Plan
- §9: Risk Mitigation
- §10: Success Criteria
- §11: Future Work

**Key Features:**
- Every task references original plan (§ and line numbers)
- Explicit task dependencies documented
- Acceptance criteria spelled out for each task
- Code examples (Rust, bash) included

**Best For:** Understanding exactly what each task is, why it matters, and what success looks like

---

### 7. BEADS_IMPLEMENTATION_CHECKLIST.md (EXECUTION GUIDE)
📍 **Location:** Project root  
📄 **Size:** 13 pages  
⏱️ **Execution Time:** 30 minutes  

**Contents:**
- 7 Phases (Verification, Create Phase C, Create Phase H, Infrastructure, Updates, Verify, Handoff)
- Step-by-step instructions
- Ready-to-copy bd commands
- Variable tracking (save IDs for dependencies)
- 20+ item verification checklist

**Each Step Includes:**
- Command to run
- Expected output
- Checklist item

**Best For:** Actually executing the beads integration (copy & paste commands)

---

## How to Use These Documents

### Scenario 1: "Just tell me what to do" (15 minutes)
1. Read: `README_BEADS_INTEGRATION.md`
2. Read: `BEADS_ACTION_SUMMARY.md`
3. Execute: `BEADS_IMPLEMENTATION_CHECKLIST.md`

### Scenario 2: "I need to understand the plan before updating beads" (60 minutes)
1. Read: `README_BEADS_INTEGRATION.md` (5 min)
2. Read: `GIL_RELEASE_HYBRID_IMPLEMENTATION_PLAN_REVISIONS.md` §1-2 (10 min)
3. Read: `BEADS_ACTION_SUMMARY.md` (5 min)
4. Read: `GIL_RELEASE_HYBRID_IMPLEMENTATION_PLAN_WITH_BEADS_MAPPING.md` (20 min)
5. Execute: `BEADS_IMPLEMENTATION_CHECKLIST.md` (30 min)

### Scenario 3: "Deep technical review" (2-3 hours)
1. Read all 6 documents in order
2. Cross-reference with original plan (full technical specs)
3. Understand decision rationale
4. Execute checklist with full context

---

## Key Cross-References

### Phase C (Batch Reading) Details
| Topic | Source Doc | Beads Doc |
|-------|-----------|-----------|
| Architecture | Plan Revisions §3 (lines 48-243) | Mapping §3 Task C.0-C.Gate |
| read_batch() spec | Plan Revisions §3.4 (lines 195-243) | Mapping §3 Task C.1 |
| EOF State Machine | Plan Revisions §3.3 (lines 133-193) | Mapping §3 Task C.3 |
| Benchmarking gate | Plan Revisions §3.2 (lines 82-131) | Mapping §3 Task C.Gate |

### Phase H (Rust I/O) Details
| Topic | Source Doc | Beads Doc |
|-------|-----------|-----------|
| Type Detection | Plan Revisions §4.1 (lines 248-363) | Mapping §3 Task H.1 |
| RustFile | Plan Revisions §4.2 (lines 365-430) | Mapping §3 Task H.2 |
| CursorBackend | Plan Revisions §4.3 (lines 432-463) | Mapping §3 Task H.2b |
| Rayon Pipeline | Plan Revisions §4.4 (lines 465-613) | Mapping §3 Tasks H.4a-H.4c |
| Performance Gates | Plan Revisions §3.2, §7.2 | Mapping §3 Tasks C.Gate, H.Gate |

### Diagnostic Infrastructure
| Test | Plan Section | Beads Task |
|------|--------------|-----------|
| GIL Release Verification | Plan §7.1 (lines 941-944) | Infrastructure: Diagnostic Suite |
| Batch Size Benchmarking | Plan §7.1 (lines 946-950) | Infrastructure: Diagnostic Suite |
| Memory Safety (ASAN/Valgrind) | Plan §5.2 (lines 377-399) | Infrastructure: Memory Safety CI |

---

## Decision Summary

### Critical Path
```
Phase C.Gate (≥1.8x speedup) → Phase H.3 (sequential baseline)
                             ↓
                        Phase H.Gate (≥2.5x speedup) → Phase G (release docs)
```

### Key Design Decisions
1. **Batch size:** 100 records (validated 10-500 range)
2. **Hard limits:** 200 records/batch OR 300KB max
3. **GIL reduction:** 100x (N records → N/100 batches)
4. **Speedup targets:** Phase C ≥1.8x, Phase H ≥2.5x
5. **Type routing:** 8 input types supported, fail-fast for unknown
6. **Rayon config:** Respect RAYON_NUM_THREADS env var
7. **Backpressure:** Bounded channel (1000 records)

### Gates & Blockers
- **C.Gate** blocks H.3 start (sequential baseline needs Phase C complete)
- **H.Gate** blocks Phase G release (docs need Phase H threading model)
- **Phase F** happens before Phase C decision (determines if C is even needed)

---

## Deliverables Summary

✅ **Original Plan:** 1,200+ line detailed technical specification  
✅ **Gap Analysis:** 6 critical gaps identified  
✅ **Beads Mapping:** 800+ line cross-reference document  
✅ **Action Summary:** 3-page quick reference  
✅ **Execution Checklist:** 13-page step-by-step guide with 30-minute timeline  
✅ **Integration Guide:** Executive summary  

**Total Effort to Execute:** 30 minutes  
**Total Effort to Understand:** 60-180 minutes (depending on depth)  
**Total New Work Items:** 19 tasks + 1 epic  
**Estimated Implementation:** 14 days (serial) / 8-9 days (optimized parallel)

---

## Verification Checklist

Before using these documents:

- [ ] All 6 documents exist in workspace
- [ ] Original plan (Revisions.md) reviewed
- [ ] README_BEADS_INTEGRATION.md read
- [ ] BEADS_ACTION_SUMMARY.md reviewed
- [ ] BEADS_IMPLEMENTATION_CHECKLIST.md bookmarked
- [ ] Team has access to all documents
- [ ] bd (beads) CLI installed and working

```bash
# Verify beads is working:
bd list --json | jq 'length'
# Should return: 200+ (number of existing issues)
```

---

## Next Steps

1. **Option A (30 min):** Run checklist now
   - Execute BEADS_IMPLEMENTATION_CHECKLIST.md phases 1-7
   - Verify with `bd list` at end

2. **Option B (1 hour):** Review first, then execute
   - Read README_BEADS_INTEGRATION.md
   - Read BEADS_ACTION_SUMMARY.md
   - Review Mapping document for your phase of interest
   - Run checklist

3. **Option C (reference only):** Keep documents for later
   - Archive documents
   - Return when implementing Phase C or Phase H
   - Use as specification reference

---

## Document Dependencies

```
README_BEADS_INTEGRATION.md (start here)
    ↓
    ├─→ BEADS_ACTION_SUMMARY.md (quick ref)
    ├─→ BEADS_IMPLEMENTATION_CHECKLIST.md (execute this)
    └─→ GIL_RELEASE_HYBRID_IMPLEMENTATION_PLAN_WITH_BEADS_MAPPING.md
            ↓
            └─→ GIL_RELEASE_HYBRID_IMPLEMENTATION_PLAN_REVISIONS.md (original plan)
```

---

**All documents prepared and verified.**  
**Ready for immediate use.**  
**Status:** ✅ COMPLETE
