Add CENG-WP-0002 package distribution workplan

Document ADR-0002 resolution, publish readiness, and SharedContracts
sync. Update CENG-WP-0001 follow-up to reference CE-WP-0009 and CENG-WP-0002.

workplans/CENG-WP-0001-intent-placeholder.md

@@ -93,8 +93,9 @@ depends_on: [T02, T03]
 
 ---
 
-## Follow-up (out of scope)
+## Follow-up
 
-- Wire `citation-evidence` to consume `@citation-evidence/engine` as a workspace
-  dependency and delete the in-repo copies (CE-WP-0009 or equivalent).
-- Publish package to a registry when sister repos are ready to depend on it.
+- `CE-WP-0009` — wire `citation-evidence` to consume this package via `link:` and
+  delete in-repo copies (`citation-evidence/workplans/CE-WP-0009-engine-workspace-wireup.md`).
+- `CENG-WP-0002` — ADR-0002, publish readiness, contract sync
+  (`workplans/CENG-WP-0002-package-distribution.md`).

workplans/CENG-WP-0002-package-distribution.md

@@ -0,0 +1,154 @@
+---
+id: CENG-WP-0002
+type: workplan
+title: "Package distribution — ADR-0002, publish readiness, contract sync"
+domain: citation_evidence
+repo: citation-engine
+status: active
+owner: codex
+topic_slug: citation_evidence_mvp
+created: "2026-06-22"
+updated: "2026-06-22"
+depends_on_workplan: CENG-WP-0001
+state_hub_workstream_id: "ccd217a2-572d-435d-9a29-e0a55b6a4311"
+spec_refs:
+  - ../citation-evidence/docs/decisions/ADR-0002-monorepo-vs-polyrepo.md
+  - ../citation-evidence/wiki/SharedContracts.md
+  - ../citation-evidence/wiki/DependencyMap.md
+---
+
+# CENG-WP-0002 — Package Distribution
+
+Make `@citation-evidence/engine` consumable beyond a sibling `link:` checkout:
+resolve the monorepo-vs-polyrepo decision, document the install story for sister
+repos, and prepare optional registry publish.
+
+Prerequisite: `CENG-WP-0001` complete. `CE-WP-0009` (umbrella wireup) can
+proceed in parallel using `link:`; publish tasks here depend on T01.
+
+## Dependency order
+
+```
+T01 (resolve ADR-0002)
+  └─ T02 (consumer install docs + export surface)
+       └─ T03 (SharedContracts sync runbook)
+       └─ T04 (publish readiness — optional until registry chosen)
+```
+
+---
+
+## T01 — Resolve ADR-0002
+
+```task
+id: CENG-WP-0002-T01
+status: wait
+priority: critical
+depends_on: []
+```
+
+Fill in `citation-evidence/docs/decisions/ADR-0002-monorepo-vs-polyrepo.md`:
+
+- **Decision** — pick A, B, or C for the citation-evidence ecosystem.
+- **Recommended default** (if no strong preference): **B — six independent repos
+  with published packages**, using `link:../citation-engine` during local dev
+  until a registry is configured.
+- **Consequences** — how sister repos install engine, how versions bump, how
+  `SharedContracts.md` stays authoritative.
+
+Stop and ask the repo owner if the choice is genuinely ambiguous.
+
+**Acceptance:** ADR status moves from `proposed` to `accepted`; decision and
+consequences sections are filled.
+
+---
+
+## T02 — Consumer install docs and export surface
+
+```task
+id: CENG-WP-0002-T02
+status: wait
+priority: high
+depends_on: [T01]
+```
+
+Document in `citation-engine/README.md`:
+
+- **Local dev** — `link:../citation-engine` (sibling checkout layout).
+- **Post-publish** — `pnpm add @citation-evidence/engine` (registry TBD).
+
+Review and stabilize `package.json` `exports`:
+
+```json
+{
+  ".": "./src/engine/index.ts",
+  "./shared": "./src/shared/index.ts"
+}
+```
+
+Confirm TypeScript consumers can resolve both entry points without deep imports
+into `src/`. Add `types` conditions or subpath exports only if a consumer
+repo hits resolution errors during `CE-WP-0009`.
+
+**Acceptance:** README has copy-paste install snippets for umbrella and one
+sister repo placeholder (`evidence-anchor`).
+
+---
+
+## T03 — SharedContracts sync runbook
+
+```task
+id: CENG-WP-0002-T03
+status: wait
+priority: high
+depends_on: [T01]
+```
+
+`citation-evidence/wiki/SharedContracts.md` remains the **authoritative**
+contract. `citation-engine/wiki/SharedContracts.md` is a conformance copy for
+enum tests (`evidence-link.test.ts`).
+
+Write a short runbook (in `citation-engine/README.md` or `wiki/README.md`):
+
+1. Contract change lands in umbrella `wiki/SharedContracts.md`.
+2. Copy/sync to `citation-engine/wiki/SharedContracts.md`.
+3. Update runtime enums/types in `src/shared/` if needed.
+4. Run `pnpm test` in both repos.
+
+**Acceptance:** runbook exists; `evidence-link.test.ts` path to local
+`wiki/SharedContracts.md` is documented.
+
+---
+
+## T04 — Publish readiness (deferred until registry exists)
+
+```task
+id: CENG-WP-0002-T04
+status: wait
+priority: low
+depends_on: [T01, T02]
+```
+
+Prepare for first registry publish when a host is chosen (npm, GitHub Packages,
+private Verdaccio, etc.):
+
+- Decide `private: false` vs scoped private package.
+- Add `files` whitelist (`src/`, `wiki/`, `README.md`, `LICENSE`).
+- Optional: `tsc` emit to `dist/` if consumers cannot consume TypeScript
+  sources directly (decide based on ADR-0002 choice and first consumer).
+- Versioning policy: semver from `0.1.0`; breaking contract changes bump minor
+  or major per `SharedContracts.md` § change process.
+- CI publish step stub (document only — no registry credentials in repo).
+
+**Acceptance:** a "Publishing checklist" section in README; package is
+structurally publishable even if no publish has occurred yet.
+
+---
+
+## Relationship to other workplans
+
+| Workplan | Role |
+|----------|------|
+| `CENG-WP-0001` | Extraction — **done** |
+| `CE-WP-0009` | Umbrella consumes engine via `link:` — can start now |
+| `CENG-WP-0002` | Distribution strategy and publish prep — this file |
+| Future `EANCH-WP-0002`, etc. | Sister-repo extractions depend on engine install story from T02 |