skills: the Studio author's page skill learns the print page (`page.print`, the printable block subset, its lint) now that #22158 has landed — #8346 ruling B′

[objectstack-fleet]

Filed by the domain:spec seat 3 (seat post #18883, session_01RPo7FUd6bSnAfkWMAKi848), on #8346's ruling of record 6051470224 (letter B′): "the Studio author's skill learns the print page when ① lands". ① is #22158, landed through PR #22193. ⛔ Not a claim.

What the skill teaches after this card

• A printable document (an invoice, a delivery order, a letter, a report) is a page that declares print. There is no template type.
• The print keys and what each maps to on paper: paper size and orientation, millimetre margins, repeatHeader / repeatFooter over the page's own header / footer regions, page numbers, and repeated table heads and avoidBreakInside.
• Only record, home and app pages with regions may declare it.
• Inside a print page only the 13 printable blocks are allowed (PRINTABLE_PAGE_COMPONENT_TYPES). The lint rule print-page-block-unprintable refuses the rest, each with its reason; teach the reasons, not a copy of the list.
• List export has no 'pdf'. A list prints through the view's allowPrinting.

Also in this skill family (measured by #22158's dev)

skills/objectstack-ui/rules/actions.md teaches a per-project /api/v1/invoice/{recordId}/pdf endpoint. It is replaced by the print page, and, once card ③ lands, the render service.

Surface

skills/** is a governed surface (Tier H). This is a maintainer-approved draft PR, with the seat's 维护者速读.

Reader who acts: the domain:skills execution seat. The lane comes from the anchoring rule (skills/** → domain:skills). priority:p2 and target:v18 are inherited from #8346.

[objectstack-fleet]

Claim: PM loop round 4
Session: session_01CXydFDyiQwNbGFkmwrcRQq
Account: huangyiirene (the seat's linked user as GET /user answers it; always the card's assignee)
Branch: claude/issue-22271-ui-skill-print-page
Worktree: objectstack-issue-22271
Domain: domain:skills
Seat: domain:skills#1
File surface: skills/objectstack-ui/rules/pages.md (the page skill: a print-page section under 「Pages」) and, only where the lesson needs a pointer, skills/objectstack-ui/SKILL.md (a row or sentence in the page-related tables) and skills/objectstack-ui/rules/actions.md (the one sentence framing the per-project invoice-PDF example against the print page, only if true of the tree today); skills/objectstack-ui/evals/*.json only where an eval quotes a changed line. Governed (skills/**, Tier H): the PR stays draft with ## 维护者速读(草稿) and lands on an authorized APPROVED or the maintainer's hand. ⛔ No packages/**, no content/docs/**; ⛔ no re-wrap as token payment (pages.md sits at 5679 of 5692 tokens, headroom 13; SKILL.md 3844 of 3856; actions.md 2104 of 2108 — growth is paid by deleting content the same file restates, or by the ratchet's own rule for a new reference file if it has one, measured not assumed); stop on breach; explain in the report
Container & model: M, mode:subagent, model: CONTRACT_REVIEW_TIER — dispatch-gates --tier --repo objectstack-ai/objectstack skills/objectstack-ui/rules/pages.md prints "Model tier — MANDATORY" for skills/** (the published catalog ships verbatim by npx skills add; derived from the file surface, not recalled)
Clause-②: no
Responsibility: the ruling produces the text (#8346 ruling B′, 6051470224: "the Studio author's skill learns the print page when ① lands"; ① is PR #22193, MERGED 2026-10-08T10:47Z) | the platform path that already covers it: none for the text — the parse and @objectstack/lint refuse a wrong print page loudly (print-page-block-unprintable, the page-kind refusal), but an AI author who never learns the declaration authors no print page at all | who reaches it: every AI author reading the ui skill to author a printable document (the port customer's five document kinds); used from the next npx skills add
Thread-read: none
Thread note: the card carries 0 comments at this read; its body (filed 2026-10-08T10:51Z by domain:spec seat 3) re-read whole at the claim's clock, with the ruling it cites (6051470224) and the landing PR #22193's file list
Serial constraints cleared: skills/objectstack-ui/rules/pages.md last touched 8ad9694fb (2026-10-04T02:42Z); skills/objectstack-ui/** otherwise last moved by this seat's PR #22184 (2026-10-08T05:55Z, landed) — no same-day churn on pages.md; no open PR touches skills/** (the open PRs' file lists read at 2026-10-08T11:30Z); the lane's other card this batch, #22260, is skills/objectstack-automation/** — file-disjoint; #8346's cards ② (objectui) ③ ④ are other lanes' and do not touch skills/**; verify lock free; batch 2 of 3; the lane's open P0/P1: none ⇒ p2 is a top candidate. Readings taken at 2026-10-08T11:30Z.

---

Generated by Claude Code

[objectstack-fleet]

os-dev-report

{
  "issue": 22271,
  "status": "done",
  "branch": "claude/issue-22271-ui-skill-print-page",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/22287",
  "session": "session_01CXydFDyiQwNbGFkmwrcRQq — subagent of the PM loop round 4 skills seat 1 (parent's id)",
  "premise_still_valid": true,
  "premise_check": "origin/main c8bb3c8d9c (branch base) contains PR #22193's merge 326a90a4a3 (merge-base --is-ancestor 73a0a6bf1d origin/main: exit 0); packages/spec/src/ui/page.zod.ts carries PagePrintSchema, PRINTABLE_PAGE_COMPONENT_TYPES (13), PRINT_REFUSED_PAGE_COMPONENT_TYPES (39 with reasons), checkPagePrintComposition; packages/lint/src/validate-print-page-blocks.ts exports PRINT_PAGE_BLOCK_UNPRINTABLE = 'print-page-block-unprintable' registered on commands ALL + surfaces CLI_AND_RUNTIME runtimeTypes ['page']; packages/spec/liveness/page.json row print is planned + authorWarn (no reader until card ②); skills/objectstack-ui/** carried zero print text before this PR (grep). Card body complete; newest Claim 6058929757 names this branch.",
  "summary": "skills/objectstack-ui/rules/pages.md gains a Print pages section: a printable document is a page that declares print (no template type); the eight print keys and their paper meaning; only a kind:'full' page of type record/home/app with blocks in regions may declare it (the parse refuses list — interfaceConfig.allowPrinting —, utility, slotted/html/react, and a full page with no regions); the printable subset taught as the property every member has (draws all it declares, in full, the same at any width) with the 13 members grouped by it; the four refusal reasons of print-page-block-unprintable with the blocks an author reaches for first (related_list/object-grid → record:line_items; page:header/sidebars/boards; record:path/tabs/buttons/inputs/forms → record:details; flex/object-chart/plugin widgets outside the vocabulary); the rendering status in one clause (validated today; the console's print rendering follows; os validate warns); no 'pdf' export, a list prints via allowPrinting; one os:check invoice example. SKILL.md: one routing word. actions.md: one pointer sentence beside OpenInvoicePdfAction, paid by its three restated best-practice bullets. Ratchet route: the ratchet refuses a new file without a maintainer-added CEILINGS row (its remedy carries the MAINTAINER-ONLY marker), so the section is paid inside pages.md by deleting the Record Detail example (lessons moved into the catalogue rows) and 11 restated lines; pages.md 5679 → 5691 of 5692 (headroom 1), SKILL.md 3844 → 3847 of 3856, actions.md 2104 → 2101 of 2108; no ceiling moved, no re-wrap counted. Draft PR #22287 opened by the relay; Tier H, never flipped ready.",
  "files_changed": [
    "skills/objectstack-ui/rules/pages.md (453 → 434 lines; 5679 → 5691 tokens; ceiling 5692)",
    "skills/objectstack-ui/SKILL.md (308 → 308 lines; 3844 → 3847 tokens; ceiling 3856)",
    "skills/objectstack-ui/rules/actions.md (207 → 206 lines; 2104 → 2101 tokens; ceiling 2108)"
  ],
  "readings": {
    "whole_package_all_SKILL_md_10_files": "lines 4408 → 4408; tokens 52572 → 52575 (+3)",
    "objectstack_ui_authored_bundle_9_files": "lines 2051 → 2031 (−20); tokens 26096 → 26108 (+12)",
    "convention": "ceil(utf8 bytes / 4), scripts/check-skills-token-ratchet.mjs; before = c8bb3c8d9c, after = 4bfaf6efc2",
    "new_file_route": "refused by the ratchet itself: 'a hand-authored published bundle file carrying no ceiling … ⛔ MAINTAINER-ONLY: adding a CEILINGS row prices new text into the bundle that ships to every customer project, which is the maintainer ruling this ratchet implements — not a step an author takes while landing the file.'",
    "deletions_in_pages_md_and_where_content_survives": "listed line by line in the PR body (Ratchet route and readings); the one non-restatement deletion is the Documentation-portal roadmap remark (no authoring instruction behind it), flagged for the reviewer"
  },
  "tests": "Controls against the built @objectstack/spec dist at the head (build under scripts/pm/os-verify-lock.sh: VERDICT command-exit 0, held 88s): POSITIVE — the invoice example exactly as pages.md carries it: PageSchema.safeParse success = true, print parsed as {paperSize A4, margins {15,12,15,12}, repeatHeader, repeatFooter, pageNumbers}; validatePrintPageBlocks({pages:[example]}) = []. REFUSED (lint rule, same page with unprintable blocks): rule print-page-block-unprintable severity error ×4 — page:header 'lays its action bar out to the screen width (maxVisible / mobileMaxVisible)'; record:related_list 'draws only the first limit related records (5 unless set) … a window of the rows'; flex 'is not in the printable block subset, and nothing answers for how it prints'; record:path 'is an interactive stage control; the current stage is a field value, which record:details prints'. REFUSED (parse): print on type 'list' (points at interfaceConfig.allowPrinting and the three admitted types); repeatHeader without a header region; paperSize 'A3' (expected one of A4|A5|Letter|Legal); print on utility; print on kind 'react'. check:skill-examples (pnpm --filter @objectstack/spec run check:skill-examples) at head: first run exit 3 PREREQUISITE NOT MET (client-react dist unbuilt — not a verdict), after turbo run build --filter=@objectstack/formula --filter=@objectstack/lint --filter=@objectstack/client-react --filter=@objectstack/client under the lock (34/34 tasks, VERDICT command-exit 0, held 173s): exit 0 — '262 prose examples type-check across 3 surface(s) — every marked block parsed, so tsc ran the SEMANTIC pass on all of them'. No ablation owed (prose + one example; no guard added).",
  "gates": {
    "derivation": "node scripts/pm/dispatch-gates.mjs --commands --repo objectstack-ai/objectstack at 808cc8b7b9 (same 24 families as the PM's list); --ran reconciliation: '24 derived famil(ies) accounted for — 24 run, 0 NOT-MEASURED'; every exit captured as 'cmd > log 2>&1; E=$?' before any pipe",
    "node scripts/check-skills-token-ratchet.mjs": 0,
    "node scripts/check-skills-token-ratchet.mjs --self-test": 0,
    "pnpm --filter @objectstack/spec run check:skill-docs": 0,
    "pnpm check:skill-identifier-liveness": 0,
    "pnpm check:skill-compatibility": 0,
    "pnpm check:skill-frame-sync": 0,
    "pnpm check:doc-authoring": 0,
    "pnpm check:corpus-claim-drift": 0,
    "pnpm check:nul-bytes": 0,
    "node scripts/check-doc-route-spelling.mjs --advisory": 0,
    "node scripts/check-doc-route-spelling.mjs --self-test": 0,
    "pnpm --filter @objectstack/lint run check:doc-formula-expressions": "3 (PREREQUISITE NOT MET, lint/formula unbuilt — not a verdict) → 0 after the closure build",
    "node scripts/check-ci-filter-parity.mjs": 0,
    "node scripts/check-closing-keyword-parity.mjs": 0,
    "node scripts/check-closing-keyword-parity.mjs --self-test": 0,
    "node scripts/check-comment-mask-corpus.mjs": 0,
    "pnpm check:agent-test-spelling": 0,
    "pnpm check:cross-package-test-inputs": 0,
    "pnpm check:driver-memory-census": 0,
    "pnpm check:gitlink-declared": 0,
    "pnpm check:pm-governed-merges": 0,
    "pnpm check:refd-timer-probe": 0,
    "pnpm check:role-word": 0,
    "pnpm check:watch-hint-literal": 0,
    "pnpm --filter @objectstack/spec run check:skill-examples (control, not in the 24)": 0,
    "ci": "in_progress — not awaited; type-check lanes and pnpm lint are CI's own (no source file moves)"
  },
  "deviations": [
    "label-write REFUSED by this session's auto-mode classifier before any request was made: command `node scripts/pm/label-write.mjs --issue 22287 --repo objectstack-ai/objectstack --add skip-changeset --assign huangyiirene`, stated reason '[External System Writes]'. Per the dispatch order: no other route attempted (no curl, no MCP, no retry); PR #22287 therefore carries neither `skip-changeset` nor the assignee `huangyiirene` — the seat applies both after its review. The changeset gate will read red until `skip-changeset` is on (the diff publishes nothing from a released package).",
    "Two gates exited 3 on the first run (prerequisites: unbuilt @objectstack/lint+formula and @objectstack/client-react in a fresh worktree); the closure was built under the verify lock and both re-run to exit 0 — recorded as the final readings, not as failures.",
    "A second commit (4bfaf6efc2) joins one wrapped line in the print keys paragraph — byte count unchanged (202 → 202), zero tokens; cosmetic only."
  ],
  "mcp_calls": "0 — no MCP GitHub tool called",
  "api_writes": "2 — (1) POST /repos/objectstack-ai/objectstack/dispatches via scripts/pm/fleet-write/dispatch.mjs (request fw-20261008T120502Z-0d2eeb, run 37774392317 success) executing one pr_create = POST /repos/objectstack-ai/objectstack/pulls as objectstack-fleet[bot] → draft PR #22287, read-back identical 14958 bytes; (2) this os-dev-report comment via scripts/pm/post-stamped.mjs --comment=22271 (relay → POST /repos/objectstack-ai/objectstack/issues/22271/comments). Not REST: git push ×3 (empty branch probe, 808cc8b7b9, 4bfaf6efc2). Refused before any request: the label-write above.",
  "open_questions": [],
  "out_of_scope_findings": [
    "class: b · reach: published skill text — every AI author who installs skills/objectstack-ui via npx skills add reads it; a `type: 'doc'` nav item IS accepted by the spec today · evidence: packages/spec/src/ui/app.zod.ts:108 declares the nav-item type 'doc' ({ type: 'doc', book } / { type: 'doc', doc }, lines 681-686) and skills/objectstack-ui/SKILL.md's Navigation Item Types table lists `doc`; yet skills/objectstack-ui/rules/pages.md → Routing model says 'There is no dedicated `doc` nav-item type yet, so use a `url` item pointing at /docs/…', and skills/objectstack-ui/evals/views-apps-actions-pages.json eval 4 expected_output expects 'a `type: 'url'` nav item pointing at /docs/crm_user_guide' · Seam: spec:NavigationItem type 'doc' → consumer: skills/objectstack-ui/rules/pages.md (teaching text), evals eval 4 · not fixed here (a different defect class from this card; noted in PR #22287 Acceptance notes) · dedupe words: doc nav-item type, pages.md url item, /docs/ nav, Routing model, views-apps-actions-pages eval 4",
    "carrier: card ② of #8346 (objectui print rendering) · noted, not filed — the two forward-looking lines in pages.md ('the console's print rendering that applies it follows'; 'os validate warns the layout is not yet applied') and actions.md ('rendered once the console's print rendering ships') are the lines to revise when ② lands at a .objectui-sha pin; the liveness row print flips to live in the same act"
  ]
}

---

Generated by Claude Code

[objectstack-fleet]

ACCEPT — PR #22287 (4bfaf6efc2), reviewed against GitHub and origin/main by skills seat 1, session_01CXydFDyiQwNbGFkmwrcRQq, 2026-10-08T12:25Z

Verdict: ACCEPT. Landing path: Tier H (skills/objectstack-ui/**, three markdown files, +71/−92; dispatch-gates --tier MANDATORY), so the final four-piece set replaces a queue landing: ① the ## Contract review record is on PR #22287 (PASS, head 4bfaf6efc2febe80b78dcedf57b7e3920f2a5aef, served tier CONTRACT_REVIEW_TIER, in-seat); ② this ACCEPT; ③ needs-user-decision on the PR plus the final maintainer brief comment there; ④ review requested from os-zhuang and hotlong. The PR stays draft until an authorized APPROVED (GOVERNED_APPROVERS) or the maintainer's hand; on APPROVED this seat lands it unless the approver already has, and closes out either way.

Checklist, read on the PR and the tree, not on the report:

• PR form: draft, base main, two commits (808cc8b7b9 the change, 4bfaf6efc2 joining one wrapped line at zero bytes), first line Fixes #22271, Clause-②: no at the start of its own line; the body's only closing keyword is that first line (export: PDF / print document generation — re-planned for v18, superseding the #1301 NOT_PLANNED closure #8346, spec(print page) ① of #8346: a page gains an optional print declaration, a linted printable-block subset, the list-export retirement sentence made true, and the three zero-reader document schemas retired #22158, feat(spec)!: a page gains an optional print declaration and a linted printable block subset; the zero-reader document schemas retire whole (#22158) #22193, docs(skills): objectstack-ui action examples and the SKILL.md action rows follow the ActionSchema refinements #22184 appear as plain references). documentation, size/m, skip-changeset and assignee huangyiirene on the PR, read back — the last two are this seat's own act after its docs-only reading (the dev's write was refused by its session classifier, recorded in its report 6059499743).
• Scope: git diff --numstat c8bb3c8d9c..4bfaf6efc2 = skills/objectstack-ui/rules/pages.md (+66/−86), skills/objectstack-ui/rules/actions.md (+4/−5), skills/objectstack-ui/SKILL.md (+1/−1) — exactly the claim's file surface; no eval, no packages/**, no .objectui-sha.
• The edit, read in the diff and judged in the contract review (items 1–5): the eight print keys with their defaults, the three admitted page types and the refused kinds, the 13 printable blocks and the four refusal reasons all match page.zod.ts on origin/main; the rendering status matches the liveness row (planned, authorWarn); the two list facts match view.zod.ts and list-view-export-options.ts; the deletions survive where the PR body says, the one non-restatement (the Documentation-portal roadmap remark) flagged in the brief.
• Premises: the claim's reading (card ① of the export: PDF / print document generation — re-planned for v18, superseding the #1301 NOT_PLANNED closure #8346 ruling landed as spec(print page) ① of #8346: a page gains an optional print declaration, a linted printable-block subset, the list-export retirement sentence made true, and the three zero-reader document schemas retired #22158 through PR feat(spec)!: a page gains an optional print declaration and a linted printable block subset; the zero-reader document schemas retire whole (#22158) #22193; rendering is card ②, not on this tree) holds on origin/main fbcbcf124f; the dev reported premise_still_valid: true and parsed the invoice example on the built dist (schema success, lint empty) with the refusal controls (unprintable blocks ×4, list type, missing header region, A3, utility, react).
• Ratchet: seat-recomputed from the head blobs, pages.md 5691 of 5692, SKILL.md 3847 of 3856, actions.md 2101 of 2108; no ceiling moved; the new-file route refused by the ratchet's own MAINTAINER-ONLY remedy, so paid inside pages.md by deletion.
• Evidence: 24 gate families derived with dispatch-gates --commands, each exit captured, --ran reconciliation 24 derived / 24 run / 0 NOT-MEASURED; two prerequisite re-runs after the closure build under the verify lock, recorded with their first exits; check:skill-examples as a control (262 blocks, exit 0). mcp_calls 0; api_writes 2, both relay dispatches as objectstack-fleet[bot].
• CI on the head at this reading: 35 check-runs, 23 success, 11 skipped, 1 failure (Check Changeset, the run before the label landed; its re-run after the label reads skipped). Landing waits on every check green regardless. origin/main fbcbcf124f; merge-tree clean.
• Contract faces: published skill text hit ⇒ at-tier contract review owed and written in-seat. Clause-②: no.
• Governed-merge reading: check-governed-merges --pr 22287 lists the three skills/** paths, 163 changed lines under the human-merge threshold; Tier H. Not flipped ready, not armed.

Deviations noted, none blocking:

• The dev's label-write was refused by its session classifier ("External System Writes"), recorded with the exact command; the seat applied the label and assignee as its own conclusion.
• Seat note: tabs / accordion sit under "nothing to print" where the source's reason is "a closed panel never reaches paper"; same refusal, same remedy; a one-word fix rides the next edit of the section.

Acceptance notes: the dev's class-b finding (pages.md Routing model denies a doc nav-item type that app.zod.ts:108 declares; eval 4 expects a url item) is filed by this seat as a card of this lane, to be dispatched after this PR lands (pages.md headroom is 1 token); its number follows in the landing note. The three forward-looking lines (two in pages.md, one in actions.md) are the ones to revise when card ② of the #8346 ruling lands at a .objectui-sha pin.

---

Generated by Claude Code

[objectstack-fleet]

Landed — PR #22287 MERGED, skills seat 1, session_01CXydFDyiQwNbGFkmwrcRQq, 2026-10-08T13:11Z

Two readings, taken together: PR #22287 reads merged: true at 2026-10-08T13:06Z with merge commit 238222d8cd412ca77c816fa1f849c991ed84f251, and that commit is an ancestor of origin/main (single parent; content = the diff of head 4bfaf6efc2, three files +71/−92, compared against the two-commit branch's base; control: origin/main at 238222d8cd at this reading). The queue entry gh-readonly-queue/main/pr-22287-ee6aa013fb rode behind pr-22284 (added_to_merge_queue 2026-10-08T12:37Z, four minutes after the approver armed it — no seat action). Approval, ready flip and arming were all os-zhuang's (review 5456619133 on 4bfaf6efc2, 2026-10-08T12:33Z; ready_for_review and auto_merge_enabled in the same minute) — the seat armed nothing. The contract review (PASS, 6059781313), the ACCEPT (6059814043) and the maintainer brief (6059869139) are the review record beside the approval; needs-user-decision stripped from the PR after the merge.

Close-out in this act: this card closed by the merge through Fixes #22271 (read back below); pm:dispatched and the assignee stripped; the lane's open set compared before and after the landing: 9 open before (#22291 #22271 #22260 #22167 #22060 #22053 #22052 #19287 #17161, read 2026-10-08T12:31Z) and 7 open after (#22291 #22167 #22060 #22053 #22052 #19287 #17161): #22271 left by this merge and #22260 by PR #22284, merged in the same queue minute (its own landing note is on that card); nothing else closed, and no card was closed by a stray keyword (this PR carried one).

skills/objectstack-ui/rules/pages.md now carries the Print pages section (#8346 ruling B′, card ① follow-through), SKILL.md routes to it and actions.md points at it beside the PDF-endpoint example. The dev's class-b finding is filed and triaged as #22291 (pm:queue, p2: the Routing model denies the doc nav-item type that app.zod.ts:108 declares; eval 4 expects a url item) — dispatchable now that this PR has landed (pages.md headroom 1 token: the edit pays by deletion). The three forward-looking lines (two in pages.md, one in actions.md) are the ones to revise when card ② of the #8346 ruling lands at a .objectui-sha pin.

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Generated by Claude Code