Establish shared-contracts home, dependency map, MVP workplans, and umbrella-first strategy

- INTENT.md: declare umbrella as the home for shared contracts; document
  umbrella-first MVP decision (code lives here until subsystems stabilize)
- wiki/SharedContracts.md: vocabulary, state enums, relation types,
  selector taxonomy, event vocabulary, viewer adapter contract,
  canonical text normalization, rect-registry contract
- wiki/DependencyMap.md: allowed dependency edges; folder layout +
  lint-rule strategy during umbrella-first phase
- history/2026-05-24-initial-assessment.md: alignment review, technical
  risks, and the umbrella-first pivot rationale
- workplans/CE-WP-0001..0004: four ralph-compatible workplans covering
  foundations, PDF review slice, form binding + visual guide, and
  citation card export — implementing PRD §20 end-to-end

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

workplans/README.md

@@ -0,0 +1,41 @@
+# MVP Workplans
+
+These four workplans implement the **first reference scenario** from
+`wiki/ProductRequirementsDocument.md` §20 — end-to-end PDF evidence
+capture → form binding → citation card export — entirely inside the
+`citation-evidence` repository.
+
+| Workplan | Title                                  | Status |
+|----------|----------------------------------------|--------|
+| `CE-WP-0001` | Foundations — scaffold, folders, lint rules, normalize, fixtures | todo |
+| `CE-WP-0002` | PDF review slice — engine types, anchor, source, viewer, sidebar  | todo |
+| `CE-WP-0003` | Form binding + visual guide — EvidenceLink, rect registry, overlay | todo |
+| `CE-WP-0004` | Citation card export — Markdown + HTML renderers, sidebar export   | todo |
+
+## Order
+
+Strictly sequential. `CE-WP-0002` depends on the folder/lint scaffolding from
+`CE-WP-0001`. `CE-WP-0003` and `CE-WP-0004` depend on the engine types,
+viewer adapter, and sidebar from `CE-WP-0002`.
+
+## How to run a workplan
+
+```
+/ralph-workplan workplans/CE-WP-0001-foundations.md
+```
+
+Ralph drives the loop and retires automatically when all tasks in the
+workplan are marked `done`. See `~/.claude/plugins/ralph-workplan/ralph-workplan.md`.
+
+## Acceptance for MVP
+
+The first reference scenario from PRD §20 runs end-to-end:
+
+1. Create a collection
+2. Upload a PDF
+3. Select a passage, add commentary, create an evidence item
+4. Open a side-by-side form
+5. Link the evidence item to a form field
+6. Focus the field → field, evidence card, and PDF passage all highlighted
+7. SVG guide visible between field → card → highlight
+8. Export evidence as a Markdown citation card