Add CE-WP-0009 engine workspace wireup workplan

Wire umbrella to @citation-evidence/engine via link: dependency and
remove in-repo shared/engine copies. Index post-MVP extraction track.

docs/mvp-workplans-index.md

@@ -16,6 +16,17 @@ CE-WP-0008 fixes capture field value persistence and viewport scroll reliability
 | `CE-WP-0007` | Capture view polish — scroll, linking, layout, rename, field UX | done |
 | `CE-WP-0008` | Capture content editing & viewport scroll reliability | done |
 
+## Post-MVP — extraction and distribution
+
+| Workplan | Repo | Title | Status |
+|----------|------|-------|--------|
+| `CENG-WP-0001` | citation-engine | Extract engine from umbrella | done |
+| `CE-WP-0009` | citation-evidence | Wire umbrella to `@citation-evidence/engine` | active |
+| `CENG-WP-0002` | citation-engine | Package distribution (ADR-0002, publish prep) | active |
+
+`CE-WP-0009` depends on `CENG-WP-0001`. `CENG-WP-0002` can run in parallel;
+publish tasks wait on ADR-0002 resolution.
+
 ## Order
 
 CE-WP-0001..0004 are strictly sequential. CE-WP-0005 depends on 0004.

workplans/CE-WP-0009-engine-workspace-wireup.md

@@ -0,0 +1,147 @@
+---
+id: CE-WP-0009
+type: workplan
+title: "Wire umbrella to @citation-evidence/engine package"
+domain: citation_evidence
+repo: citation-evidence
+repo_id: a677c189-b4e2-4f2a-9e48-faa482c277e6
+topic_slug: citation_evidence_mvp
+topic_id: 96fa8e80-9f74-40f2-84cd-644e9747b9ec
+status: active
+owner: codex
+created: "2026-06-22"
+updated: "2026-06-22"
+depends_on_workplan: CE-WP-0008
+planning_order: 9
+planning_priority: high
+spec_refs:
+  - wiki/DependencyMap.md
+  - ../citation-engine/workplans/CENG-WP-0001-intent-placeholder.md
+---
+
+# CE-WP-0009 — Wire Umbrella to `@citation-evidence/engine`
+
+Replace the in-repo `src/shared/` and `src/engine/` copies with a dependency on
+the extracted `citation-engine` package (`@citation-evidence/engine`).
+
+Prerequisite: `CENG-WP-0001` complete (engine extracted and tests green).
+
+This workplan does **not** publish the package — it uses a local `link:` (or
+equivalent) dependency on the sibling checkout. Publishing is `CENG-WP-0002`.
+
+## Goals
+
+1. Single canonical source for shared types and engine services (`citation-engine`).
+2. Umbrella tests and app behavior unchanged after wireup.
+3. ESLint boundary rules still enforce the dependency map (subsystems may not
+   import each other's behavior; engine/shared come from the package).
+
+## Dependency order
+
+```
+T01 (add package dependency + resolve aliases)
+  └─ T02 (point tsconfig / vite / eslint at package)
+       └─ T03 (delete src/shared + src/engine)
+            └─ T04 (verification: test + lint + typecheck + manual smoke)
+```
+
+---
+
+## T01 — Add `@citation-evidence/engine` dependency
+
+```task
+id: CE-WP-0009-T01
+status: wait
+priority: critical
+depends_on: []
+```
+
+Add a workspace-style local dependency on the sibling repo:
+
+```json
+"dependencies": {
+  "@citation-evidence/engine": "link:../citation-engine"
+}
+```
+
+Run `pnpm install` and confirm `node_modules/@citation-evidence/engine` resolves.
+
+Document the sibling-checkout requirement in `README.md` (engine repo must sit
+next to umbrella, same layout as today).
+
+**Acceptance:** `pnpm why @citation-evidence/engine` shows the link target.
+
+---
+
+## T02 — Retarget `@shared/*` and `@engine/*` aliases
+
+```task
+id: CE-WP-0009-T02
+status: wait
+priority: critical
+depends_on: [T01]
+```
+
+Update tooling so existing `@shared/*` and `@engine/*` imports keep working
+without rewriting every consumer file:
+
+- `tsconfig.json` paths → `node_modules/@citation-evidence/engine/src/shared/*`
+  and `.../src/engine/*` (or equivalent stable path through the link).
+- `vite.config.ts` resolve aliases — same targets.
+- `eslint.config.js` — remove `shared` and `engine` element patterns under
+  `src/`; treat the package as external for boundary lint (subsystems still
+  may only import `@shared` / `@engine`, not each other's folders).
+
+Do **not** change import statements in `anchor/`, `source/`, `binder/`,
+`work/`, or `app/` unless an alias path breaks.
+
+**Acceptance:** `pnpm typecheck` passes before folder deletion.
+
+---
+
+## T03 — Delete in-repo engine copies
+
+```task
+id: CE-WP-0009-T03
+status: wait
+priority: critical
+depends_on: [T02]
+```
+
+Remove:
+
+- `src/shared/` (entire tree)
+- `src/engine/` (entire tree)
+
+Update partition README pointers in remaining `src/*/` folders to reference
+`@citation-evidence/engine` instead of "future home: citation-engine".
+
+**Acceptance:** `src/` contains only `anchor/`, `source/`, `binder/`, `work/`,
+`app/` (plus any top-level app entry). No duplicate engine code in git.
+
+---
+
+## T04 — Verification
+
+```task
+id: CE-WP-0009-T04
+status: wait
+priority: critical
+depends_on: [T03]
+```
+
+- `pnpm test` — full suite green (integration + unit).
+- `pnpm typecheck` — clean.
+- `pnpm lint` — clean; boundary rules still catch illegal cross-partition imports.
+- Manual smoke: dev server loads, PDF review → evidence → form link → export
+  citation card (PRD §20 path).
+
+**Acceptance:** CI-equivalent commands pass; no runtime import errors.
+
+---
+
+## Out of scope
+
+- Publishing `@citation-evidence/engine` to a registry (`CENG-WP-0002`).
+- Extracting `anchor/`, `source/`, `binder/`, or `work/` to sister repos.
+- Resolving `ADR-0002` (recommended before publish, not required for `link:`).