feat(kanban): card dependencies (blocked_by / blocks / relates)

[cnjack]

What

Adds card-to-card dependencies to the kanban — blocked_by, blocks, and relates. Implements D1 from the roadmap (design §1).

Dependencies live in card markdown frontmatter (comma-separated [[slug]]), so they ride the existing document-sync pipeline to both desktop and web — no DB migration, no new sync gate, no new WebSocket event.

Changes

• jtype-core — parse blocked_by / blocks / relates via parse_card_links (unwraps [[ ]], mirrors parse_card_tags) into BoardCardInfo. +2 unit tests.
• shared/lib/board.ts — BoardViewCard dependency fields + parseLinks / serializeLinks / cardSlug, and blockedCounts(): counts a card's distinct unfinished blockers, combining its own blocked_by with the reverse blocks edges of other cards (done-column aware, deduped, cycle-safe).
• BoardSurface — a red 🔒 blocked badge on cards showing the blocker count, resolved against all cards (a blocker may be filtered out of view).
• BoardPeek — Blocked by / Blocks / Relates pickers over sibling cards, mapping slug↔title for display while storing slugs; unresolved refs (renamed/cross-board) are preserved.
• Desktop + web adapters thread the fields through the normalized model and serialize them back to frontmatter on updateCard.
• tests/unit/boardDependencies.spec.ts + i18n (zh translations added).

Verification

• tsc --noEmit clean (root + web), 10 TS unit tests + 36 jtype-core tests pass, web vite build ok.
• Throwaway in-browser harness confirmed: the blocked badge for forward (blocked_by) and reverse (blocks) edges, that a card blocked only by a done card shows no badge, the Peek editor resolving design-spec → "Design spec", and live re-derivation — editing one card's "Blocks" made the target card's badge appear immediately.

Follow-up (design phase 2/3)

Edit-time cycle warning, unresolved-reference greying in the editor, and rename-link propagation. The current blockedCounts is already cycle-safe (no recursion); these are UX niceties.

🤖 Generated with Claude Code

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ℹ️ Review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 370c39a3-0d98-4d8b-aaaf-0ec8f9521dd4

📥 Commits

Reviewing files that changed from the base of the PR and between b089b6d and cf1ef83.

📒 Files selected for processing (16)

• services/jtype-core/src/lib.rs
• services/jtype-web/frontend/src/pages/WebBoardView.tsx
• shared/components/board/BoardPeek.tsx
• shared/components/board/BoardSurface.tsx
• shared/i18n/locales/en/messages.mjs
• shared/i18n/locales/en/messages.po
• shared/i18n/locales/ja/messages.mjs
• shared/i18n/locales/ja/messages.po
• shared/i18n/locales/ko/messages.mjs
• shared/i18n/locales/ko/messages.po
• shared/i18n/locales/zh/messages.mjs
• shared/i18n/locales/zh/messages.po
• shared/lib/board.ts
• src/components/BoardView.tsx
• src/lib/types.ts
• tests/unit/boardDependencies.spec.ts

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch feat/kanban-d1-dependencies

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