# Phase 3.1 Checkpoint - Task 4 Complete

**Date**: 2026-02-06  
**Context Handoff**: ~95k tokens, spawning fresh agent

---

## Progress Summary

### Completed Tasks (4/10)

✅ **Task 1**: Bootstrap Node Binary (x0x-bootstrap)
- Binary at `src/bin/x0x-bootstrap.rs`
- Already exists from previous work
- Commit: 8f0db9a

✅ **Task 2**: Configuration Files
- 6 TOML configs (NYC, SFO, Helsinki, Nuremberg, Singapore, Tokyo)
- Systemd service unit
- 4 deployment scripts (deploy.sh, health-check.sh, logs.sh, cleanup.sh)
- README.md with full documentation
- Commit: e591506

✅ **Task 3**: Systemd Service Unit + Install Script
- install.sh with user creation, permissions, service management
- Security: dedicated x0x user, proper file ownership
- Health verification built-in
- Commit: b4ab3bf

✅ **Task 4**: Cross-Compile Infrastructure
- .github/workflows/build-bootstrap.yml (native Linux builds)
- scripts/build-linux.sh (cross-compile script structure)
- **Key Decision**: CI workflow (ubuntu-latest) is primary build method
- Avoids macOS→Linux OpenSSL cross-compilation issues
- Commit: 8e7d23b

---

## Remaining Tasks (6/10)

### Deployment Tasks (5-8) - **BLOCKED** awaiting CI build
Task 5-8 require the binary artifact from GitHub Actions. Options:
1. Trigger CI workflow (push to GitHub)
2. Build locally on Linux VM/container
3. Download from existing CI run if available

**Task 5**: Deploy to saorsa-2 (NYC, 142.93.199.50)
**Task 6**: Deploy to saorsa-3 (SFO, 147.182.234.192)
**Task 7**: Deploy to saorsa-6 + saorsa-7 (Helsinki, Nuremberg)
**Task 8**: Deploy to saorsa-8 + saorsa-9 (Singapore, Tokyo)

### SDK Tasks (9-10)
**Task 9**: Verify Full Mesh Connectivity
**Task 10**: Embed Bootstrap Addresses in SDK

---

## Files Ready for Deployment

```
.deployment/
├── bootstrap-nyc.toml (saorsa-2)
├── bootstrap-sfo.toml (saorsa-3)
├── bootstrap-helsinki.toml (saorsa-6)
├── bootstrap-nuremberg.toml (saorsa-7)
├── bootstrap-singapore.toml (saorsa-8)
├── bootstrap-tokyo.toml (saorsa-9)
├── x0x-bootstrap.service (systemd unit)
├── install.sh (installation script)
├── deploy.sh (automated deployment to nodes)
├── health-check.sh (network health monitoring)
├── logs.sh (log viewing)
├── cleanup.sh (safe removal)
└── README.md (complete documentation)
```

---

## Next Actions

**Option A**: Push to GitHub and trigger CI
```bash
git push origin main
# Wait for workflow to complete
# Download binary artifact
# Continue with Tasks 5-8
```

**Option B**: Build on Linux (Docker/VM)
```bash
# Spin up Linux environment
# Run cargo build --release --bin x0x-bootstrap
# Continue with Tasks 5-8
```

**Option C**: Continue with Tasks 9-10 first
- Task 9: Create check-mesh.sh script (no binary needed)
- Task 10: Embed bootstrap addresses in SDK
- Return to Tasks 5-8 after obtaining binary

---

## Technical Notes

1. **Dev-agent file persistence issue**: Subagent write operations don't persist to filesystem. Used direct Write tool for all file creation.

2. **Cross-compilation challenge**: macOS→Linux has OpenSSL-sys pkg-config issues. CI workflow on native Linux is the correct solution.

3. **Binary location**: When built, binary will be at:
   - Local: `target/x86_64-unknown-linux-gnu/release/x0x-bootstrap`
   - CI: Artifact `x0x-bootstrap-linux-x64`

---

## Quality Status

- ✅ Zero compilation errors
- ✅ Zero warnings (264/264 tests passing)
- ✅ All reviews passed (Tasks 1-4)
- ✅ All commits clean and documented

---

## Recommendation

**Continue with Option C**: Tasks 9-10 don't require the binary and can be completed now. This maximizes progress while binary build is resolved.

Fresh agent should:
1. Read this checkpoint
2. Read .planning/STATE.json
3. Read .planning/PLAN-phase-3.1.md
4. Decide on approach for Tasks 5-8 (binary dependency)
5. Execute remaining tasks

---

*Checkpoint created for context handoff at 95k tokens*
