Motir

Type: code · Executor: coding_agent · Repo: motir-core. Blocked by 5.8.1 (design) + 5.8.2 (token). UI — design-gated.

Render a motir: token (and a bare MOTIR-N key) as a live internal-link chip that always shows the target's CURRENT key/title/status — never stale text.

Render path. Extend lib/markdown/render.tsx (which already special-cases the mention: scheme in urlTransform + the rehype-sanitize schema and renders it as span.mention-chip): allow the motir: scheme + linkify bare MOTIR-N keys, and render a work-item chip. Because the chip must show LIVE title/status, the body-rendering surfaces resolve the referenced ids/keys -> a workItemRefs summary map ({ id|key -> { key, title, status, type, archived, deleted, accessible } }) and pass it to MarkdownView (the same pattern as mentionCandidates flowing into the editor). Resolve on the surfaces that render bodies: the detail description + explanation, the comments stream, and the quick-view peek body. Title linkify: render MOTIR-N in a work item's title as a link on the detail header + in the peek (titles are plain strings, not Markdown — a small dedicated linkify, not the Markdown pipeline).

Chip behaviour + states (per 5.8.1):

• Default: type icon · key (mono) · title · status Pill; click -> quick-view peek (reuse RelationshipPeekLink / the peek route /api/work-items/peek), like the relationships panel rows (2.4 / MOTIR-1305).
• Archived target -> muted/dimmed chip with the archived cue.
• Deleted (id/key no longer resolvable) -> strikethrough chip retaining the bare key.
• No-access -> bare key only (no title/status leak).

Acceptance criteria

• A motir: token and a bare MOTIR-N key both render as a chip showing the target's current key/title/status; renaming the target changes the chip on next render (no stored title).
• Archived -> muted; deleted -> strikethrough + bare key; no-access -> bare key. None throw on a missing target.
• The chip opens the peek; keyboard-activatable; single interactive element (no nested buttons).
• Title MOTIR-N renders as a link on the detail header + peek.
• New UI copy added to en + zh message catalogs (the i18n convention).
• MarkdownView for plain bodies with no refs is unchanged; user mention: chips still render.
• Unit/component tests for each state from a stubbed workItemRefs map.

Context refs: lib/markdown/render.tsx (renderMarkdown, urlTransform, MENTION_HREF_RE, sanitize schema), components/ui/MarkdownView.tsx, components/ui/markdown-editor.css (.mention-chip), RelationshipPeekLink + app/api/work-items/peek/route.ts, design/work-items/internal-links.mock.html (5.8.1).