# Phase 0: CI Infrastructure — Verification Note

**Bead ID:** pdftract-4nj7y
**Epic:** Phase 0: CI Infrastructure (Argo Workflows on iad-ci)
**Completed:** 2026-05-23

## Summary

Phase 0 established the complete Argo Workflows CI pipeline required by all subsequent phases. Per ADR-009, all CI runs on the iad-ci Rackspace Spot cluster — GitHub Actions are explicitly forbidden.

## Sub-phases Completed

All 10 sub-phase coordinators are CLOSED:

| Sub-phase | Bead ID | Description | Status |
|-----------|---------|-------------|--------|
| 0.1 | pdftract-1wqec | pdftract-ci WorkflowTemplate scaffolding | ✅ CLOSED |
| 0.2 | pdftract-1bn | Cross-compilation build matrix for 5 target triples | ✅ CLOSED |
| 0.3 | pdftract-30n | Test execution on musl + glibc | ✅ CLOSED |
| 0.4 | pdftract-2rf | Static analysis and quality gates (clippy, audit, deny, MSRV, bloat) | ✅ CLOSED |
| 0.5 | pdftract-33v | Property tests and nightly fuzz job | ✅ CLOSED |
| 0.6 | pdftract-2t9 | Regression corpus runner (Tier 3, 500 PDFs) | ✅ CLOSED |
| 0.7 | pdftract-60h | Competitive benchmarks (Tier 4, hyperfine) | ✅ CLOSED |
| 0.8 | pdftract-23k1 | pdftract-py-ci WorkflowTemplate stub | ✅ CLOSED |
| 0.9 | pdftract-4b0z | Release publishing (GitHub Releases on milestone tags) | ✅ CLOSED |
| 0.10 | pdftract-3i1o | CI observability — green-run smoke test and status reporting | ✅ CLOSED |

## Acceptance Criteria Verification

### ✅ pdftract-ci active in iad-ci
- The `pdftract-ci` WorkflowTemplate is deployed in the `iad-ci` cluster
- Runs on every PR to `jedarden/pdftract` via Argo Workflows

### ✅ All 10 sub-phase coordinators closed
- Verified via `bf show` for each sub-phase bead
- All show `Status: closed`

### ✅ Green CI run demonstrates required capabilities
The CI pipeline now includes:
- **Build:** Cross-compilation for 5 target triples (x86_64-unknown-linux-{musl,gnu}, aarch64-unknown-linux-{musl,gnu}, x86_64-apple-darwin)
- **Test:** cargo test on both musl and glibc
- **Static analysis:** clippy, cargo audit, cargo deny, MSRV check, cargo bloat
- **Quality gates:** Binary size enforcement (< 4 MB stripped default)
- **Regression testing:** Tier 3 corpus runner
- **Benchmarks:** Tier 4 competitive benchmarks (pdfminer.six, pypdf, pdfplumber)
- **Release:** Automated GitHub Releases on milestone tags
- **Observability:** Green-run smoke test with exit handlers and workflow metadata

### ✅ Failure visibly blocks PR merge
- CI failures in Argo Workflows are visible in the workflow status
- Merge blockers are enforced through the CI gate

## Next Steps

With Phase 0 complete, all Phase 1-7 epics are now unblocked for code review. The CI infrastructure is in place to support:
- Cross-platform builds and testing
- Quality enforcement (clippy, audit, deny, bloat)
- Regression detection
- Performance benchmarking
- Automated releases

## Artifacts

- Argo WorkflowTemplates in `jedarden/declarative-config → k8s/iad-ci/argo-workflows/`
- CI configuration synced via ArgoCD
- Release automation ready for milestone tags

---

**Retrospective:**

- **What worked:** The phased approach to CI infrastructure allowed each component to be built and tested independently. The separation into 10 sub-phase coordinators made the work trackable and allowed parallel execution where possible.

- **What didn't:** N/A — all sub-phases completed successfully.

- **Surprise:** The comprehensive nature of Phase 0 — covering not just basic CI but also observability, release automation, and competitive benchmarking — provides a strong foundation for all subsequent phases.

- **Reusable pattern:** The pattern of breaking a large infrastructure epic into numbered sub-phase coordinators (0.1, 0.2, etc.) with clear dependencies works well for complex foundational work.