work-items: ship's seam snippet comments the container body as a get-item field, which the contract has no such field for

[kyle-sexton]

Found by adversarial validation during the Lane D design audit (#2937), 2026-08-19.

plugins/work-items/skills/ship/SKILL.md:63 carries, under the heading "Through the seam (coordination verbs; no inline provider commands)":

"$TRACKER" get-item "<container-id>"   # body = the spec

The comment is false against the seam contract. The normalized item object is schema_version, id, title, state, assignees, labels, type, blocked_by_count, parent_id, url (tools/work-item-tracker/CONTRACT.md, "JSON output contract") — there is no body field. The GitHub adapter confirms it: adapters/github/common.sh projects exactly those fields and requests --json number,title,state,assignees,labels,issueType,blockedBy,parent,url. --body exists only as a write parameter on create-item.

Consequence: a session following ship's own snippet to read the container spec gets no spec text, and the snippet's placement under a "no inline provider commands" heading implies the seam can do something it cannot. Reading an item body is a provider-mechanic operation per reference/tracker-seam.md (gh issue view --json body on GitHub; Jira REST), which that doc explicitly separates from seam verbs.

Shipped in #3010 (Lane Y). Note the same false premise was independently proposed in Lane D's first-draft design and caught by the same audit — worth fixing at the source so it stops propagating.

Fix

Correct the snippet and its surrounding prose: get-item for identity/state/parent_id (it IS authoritative for parent linkage), and a clearly-labelled provider-mechanic read for the body, with the non-GitHub degradation stated. Check plugins/work-items/skills/decompose/SKILL.md and plugins/planning/skills/plan/SKILL.md for the same assumption while in there.

Acceptance criteria

• No surface claims the seam returns an item body
• The body read is documented as provider-mechanic, presence-gated, with degradation named
• work-items CHANGELOG entry (patch bump)