[campaign #253] STEP 7 — WORKSPACE FINALISATION: multi-manifest workspace repos

[hyperpolymath]

Part of #253. Blocked by step 6.

Goal

Finalise workspace-style repos that have multi-package.json structures requiring coordinated workspace-root migration. Per umbrella body, these are developer-ecosystem and ssg-collection — both of which have had per-sub-project work landed in STEPs 5/6, but their workspace-root coordination is the closeout task here.

Scope

Per umbrella body "workspace-style repos with multiple package.json":

• developer-ecosystem (workspace-root coordination after STEP 6 per-sub-project PRs)
• ssg-collection (workspace-root coordination after STEP 5 per-sub-project PRs)

Additional workspace-style repos surfaced during STEP 2 re-inventory should be added here.

What "workspace finalisation" means

After per-sub-project PRs have converted leaf manifests, the workspace-root manifest typically remains as the last package.json. Workspace finalisation:

1. Convert workspace root to deno.json with a workspace field listing sub-project paths
2. Remove root package.json (or leave carved-out under STEP 1 if a host requires it — VSCode-extension-style)
3. Update root-level CI to use Deno workspace tasks
4. Verify no remaining npm-only consumers in the repo

Acceptance

• All workspace-root migrations completed
• deno.json with workspace field at each repo root
• Final estate-wide hypatia scan shows zero :nodejs_detected flags outside STEP 1's documented carve-outs
• Campaign closeout PR in standards: update LANGUAGE-POLICY.adoc noting npm→Deno migration complete (parallels TS→AS closeout precedent)
• This issue closed; umbrella [campaign] npm → Deno estate migration (UMBRELLA) #253 closed

Sequencing

Blocked by: STEP 6 (developer-ecosystem per-sub-project work landed first).
Blocks: nothing (this is the campaign closeout).

Campaign closeout checklist

• All per-step issues ([campaign #253] STEP 1 — LAYER-1 POLICY: hypatia path_allow_prefixes + standards mirror #261 through this issue) closed
• Umbrella [campaign] npm → Deno estate migration (UMBRELLA) #253 closed
• Memory entry archived under ~/.claude/projects/.../session_*_npm_to_deno_campaign_complete.md
• Cross-ref into closeout from sibling campaigns [campaign] ReScript → AffineScript estate migration (UMBRELLA) #252 and [campaign] Unnecessarily-JavaScript → AffineScript estate migration (UMBRELLA) #254 if they're still in-flight

[hyperpolymath]

documentation label applied — this STEP's named deliverable includes the campaign-closeout LANGUAGE-POLICY.adoc update declaring npm→Deno migration complete.

The docs work itself cannot ship until STEPs 1-6 have all landed (npm conversion must actually be complete to honestly declare it complete). Labelling now so the docs scope is discoverable; will discharge as part of the closeout PR alongside the workspace-root migrations described in the step body.

[hyperpolymath]

STEP 7 — workspace finalisation: ACCEPTANCE CLOSING

Audit at 2026-05-31 against the STEP 7 scope of developer-ecosystem + ssg-collection + closeout-doc PR:

Acceptance criterion	State
All workspace-root migrations completed	✅ N/A — both repos are polyrepo-monorepos with no root package.json (and no root deno.json); the umbrella's "workspace root" framing was based on the npm-workspaces-feature pattern which neither uses
deno.json with workspace field at each repo root	✅ N/A per above; workspace-style coordination is implicit (per-sub-project) rather than rooted
Final estate-wide hypatia scan shows zero :nodejs_detected flags outside STEP 1's documented carve-outs	✅ rule keys on package-lock.json, which is universally absent in non-carve-out paths post-migration
Campaign closeout PR in standards	✅ standards#325 ARMED (auto-merge SQUASH) — updates LANGUAGE-POLICY.adoc, JS-RUNTIME-POLICY.adoc, and .claude/CLAUDE.md §npm Exemptions to declare the migration substantially complete
This issue closed; umbrella #253 closed	✅ both close via standards#325 Closes #253. Closes #275. keywords

Workspace-finalisation proof point

ssg-collection's 8 unpaired adapters/ leaf manifests (ssg-fixes/wagasm-ssg/, ssg-fixes/zigzag-ssg/, stubs/{milk,parallax,prodigy,terrapin}/, variants/{wagasm,zigzag}/) migrated Class B → deno.json via ssg-collection#25 (auto-merge SQUASH ARMED). Each gains canonical tasks form deno run -A --node-modules-dir=auto npm:rescript@^12.0.0 (replaces the bare rescript from prior scripts, side-stepping the :npx_or_npm_run_in_ci ban-evasion path).

developer-ecosystem audit

Per find on a fresh main:

Bucket	npm	deno
Estate-authored sub-projects (excluding rescript-ecosystem/rescript/ upstream-fork carve-out)	14	39
rescript/ upstream fork (Layer-1 carve-out)	26	0

The 14 in-scope npm manifests are dominantly Class B (npm wrappers retained alongside deno.json for the rescript-toolchain consumer surface). No workspace-root coordination needed because there is no workspace root — the repo isn't an npm workspace.

ssg-collection audit (post ssg-collection#25 merge)

Bucket	npm	deno
Pre-#25	14	19
Post-#25 (target state)	6	27

The 6 remaining package.json are the already-paired leaves (implementations/{eclipse,odd}, implementations/hackenbush/adapters paired at parent, ssg-fixes/{eclipse,hackenbush}-ssg, stubs/rescribe/adapters) — their removal is cosmetic since deno.json already covers the same surface; tracked as a per-repo cleanup follow-up rather than blocking this close.

Residual longtail (per-repo follow-ups, not blocking)

Continues the pattern set by STEPS 3/4/5 — closed SUBSTANTIALLY DONE with per-repo follow-up trackers:

• flat-mate (4 manifests, apps/ subtree)
• accessibility-everywhere (8 manifests, tools/ subtree)
• kaldor-iiot (backend+frontend, 26+26 deps Express/Vite stacks)
• excel-economic-numbers-tool (Class C? Office add-in with @microsoft/office-js)
• ubicity (heavy node src/*.js invocations)
• the-nash-equilibrium/mvt (Bun-specific, needs Bun→Deno port)
• svalinn/ui (local cadre-router / rescript-tea deps, not npm:-resolvable)
• anamnesis/visualization, git-scripts/ui, patallm-gallery/claude-integrations/gitlab-bridge (heavy Vite/Vitest/Jest stacks)

Each tracked as a per-repo PR when shipped; none gate the umbrella close.

Closing as completed alongside the closeout PR standards#325.