Merge roadmap status — pls4all ⤳ nirs4all-methods unification

This directory ships the status reports and procedures produced during the M0–M17 merge sprint. Each subdirectory carries the work-product of its phase (analysis, reconciliation, gate evidence, follow-up plan).

Phase

Status

Doc

M0

✅ done

M0/STATUS.md + M0/COMPLETION_REPORT.md + M0/worktree-inventory.md + M0/donor-archive-manifest.json + M0/ci-status.md + M0/pls4all-cleanup-status.md

M1

✅ done

M1/STATUS.md

M2

✅ done

(in commit ad43f6a; no separate STATUS doc)

M2.5

✅ done

M2.5/RECONCILIATION.md

M3

✅ done

M3/STATUS.md

M4

🟡 scaffold + recipe

M4/SPLIT_PLAN.md + M4/EXTRACTION_RECIPE.md

M5

🟡 script ready, deferred

M5/STATUS.md

M6

🟡 stubs only

(in commit b0424c4)

M7+M8

🟡 partial

M7/STATUS.md

M9–M11

🟡 scaffolds

(in commit 8b027ef)

M12

⚪ deferred

—

M13

🟡 donor bindings lifted; secondary refresh deferred

(in commit 8b027ef)

M14

✅ done

(in commit 855e426; see NOTICE.md + THIRD_PARTY_LICENSES.md at repo root)

M15

🟡 scaffold

(in commit 855e426; .github/workflows/release-wheels.yml gated if: false)

M16

📄 procedure documented

M16/M16_REPO_RENAME.md

M17

📄 procedure documented

M17/M17_RELEASE_V1.md

For the verification report (what actually works end-to-end), see VERIFICATION_REPORT.md.

For the master roadmap (rationale, target tree, parity strategy, subset machinery), see MERGE_ROADMAP.md.

How the M-numbers map to phases

The numbering follows MERGE_ROADMAP.md §9 (the 17-phase work breakdown). M2.5 is the common-core unification that the v0 draft missed — added during Codex review.

Convention

Each phase committed at least one git commit on merge/import-donor. Status docs above are post-execution reports. Commits referenced in the table land the actual deliverables; status docs explain the deliverable, what gate it satisfies, and what is deferred.

Open items not blocking v1.0.0-rc1

(see M17/M17_RELEASE_V1.md preflight checklist)

  • M4 full extraction (stubs + recipe ready; execution gated by M5+M6)

  • M5+M6 ABI rename + header reorganisation (paired focused session)

  • M7+M8 unified runner + dashboard wiring

  • M9+M10+M11 package activation (vendored-source build via catalog/scripts/render_subset.py)

  • M11 CRAN cleanup pass (existing 1 WARNING + 4 NOTEs)

  • M13 secondary binding refresh after M5 lands

  • M15 cibuildwheel matrix activation (currently gated if: false)

These ship in a v1.1.0 follow-up release pass per the roadmap budget.