/meta/types output derivation: mark an ExpressionInputSchema member whose string arm a transform erased, so a consumer can tell 「erased authoring type」 from 「admits anything」 (ruling batch #196 item 3 letter B on objectui#9830) #19295

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1. huangyiirene

   added

   pm:dispatched

   and removed

   pm:queue

   on Sep 20, 2026
2. huangyiirene

   self-assigned this

   on Sep 20, 2026
3. huangyiirene commented on Sep 20, 2026

   

   huangyiirene

   on Sep 20, 2026 – with Claude

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   Claim: PM loop round 7 (wave 2)
   Session: session_01NcPSwnmJHczmTu6FG7NMjE
   Branch: claude/issue-19295-meta-types-erased-authoring-mark
   Worktree: objectstack-issue-19295
   Domain: domain:engine
   Seat: domain:engine#1
   File surface: packages/metadata-protocol/src/ (stop on breach; explain in the report)
   Container & model: M, mode:subagent, model: default judgment tier — the shape choice carries a lane boundary, and getting it wrong crosses into another seat's tree.
   Clause-②: MEASURE IT — see below. ⛔ Not pre-declared by this seat.
   Thread-read: the card's Acceptance + Sequencing sections
   Serial constraints cleared: all 30 open PRs enumerated and file lists READ. ONE other open PR touches packages/metadata-protocol/src/ — #19385 (card #17676), still open. Region measured from its ACTUAL diff, not from the file name: its protocol.ts hunks are @@ -22328 and @@ -22471 in a 22,507-line file. This card's anchors are toJsonSchemaSafe @ :471 and the served projection @ :6540. ⇒ ~16,000 lines apart, regions DISJOINT. Nothing else in the lane is in flight on this tree.

   ---

   ⭐ Why this is dispatchable at all — the rule under it moved, and this is the first case it pays off

   ⚠️ Under the old 「同文件单跨轮硬串行」 this card would be blocked behind PR #19385. PR #19317 rewrote SKILL.md:441 to 「同区域**」** — the constraint is a claimed REGION, ⛔ not a shared file. And lanes/engine.md:24 governs how a region is cleared: only from the other card's real change extent — with a PR, read the diff; without one, declare UNKNOWN. #19385 has a PR, so the diff was read, and the two regions are ~16,000 lines apart.

   ⇒ ⚠️ If you find yourself editing anywhere near :22328–:22500, stop — that is #19385's claimed region and the clearance above no longer covers you.

   ⛔⛔ The fence that decides whether this card is even this lane's

   The card's own Acceptance says: "Clause-② declared from the diff (a new declared key on the envelope ⇒ yes; an annotation on the served projection only ⇒ the claiming seat measures)."

   ⇒ ⭐ The shape you choose decides the LANE.

   • Annotation on the served projection only, inside packages/metadata-protocol/src/ ⇒ this lane's work. Proceed.
   • A new declared key on the ADR-0089 envelope ⇒ that lands in packages/spec/src/** and is clause ②. SKILL.md:512 makes a clause-② hit spec-lane work on a single limb. ⛔ STOP. Do not write it. Do not open the PR. Report the measurement and the reason, and this seat routes the card. ⛔ Crossing into packages/spec on this claim is a fence breach, not initiative.

   ⚠️ Decide this before you write code, ⛔ not after — and say in the report which shape you took and what made the other one wrong.

   ⛔ The pin that must stay green — and what it is guarding

   packages/metadata-protocol/src/protocol.meta-types-degenerate-derivation.test.ts:19-28.

   The global repair (derive everything with io: 'input') was measured and REFUSED: 24 of 26 types answer differently and required drops 1132 → 867 — a weakening of a published contract. ⇒ ⛔ that pin is not to be touched, relaxed, or routed around. If your mark can only be produced by widening the derivation, you have found the refused answer again and should say so rather than ship it.

   The acceptance, and the one part that is easy to skip

   1. Every served member built on ExpressionInputSchema carries the mark.
   2. ⭐ A member that derives {} for another reason carries NONE — the card names this as a negative control and it is the half that makes the mark mean anything. A mark that appears on every {} is indistinguishable from the husk it was supposed to disambiguate. ⛔ Do not skip it and do not report the positive half alone.
   3. The mark is declared once, documented in the reference page, and versioned so objectui can gate on its presence.
   4. ⚠️ The consumer reads the mark, ⛔ never the key name. If your design requires objectui to match on hook.condition / visibleWhen / etc., it is the wrong design.

   ⚠️ Verify the card's premise against the tree before building on it

   The card's measurement comes from objectui's dev reports (5729362918 / 5732080628), seat-verified there, ⛔ not re-measured on this tree. Re-derive it here: that ExpressionInputSchema's string arm is a transform, that z.toJSONSchema erases it, and that the served member really derives anyOf: [ {}, {…envelope} ]. If the tree disagrees with the card, follow the tree and say so. ⭐ This lane has had three cards this week whose own instruction would have shipped a broken feature; the order is always the same — verify, then follow the file.

   Sequencing — ⛔ do not claim to unblock anything

   objectui#9830 unblocks when the marked derivation is installable by objectui (the pinned release carries it), ⛔ not merely merged. ⇒ your PR body may say what it enables; it may ⛔ not say objectui#9830 is unblocked.

   Harness drift, hand-carried (⛔ the shared checkout is STALE; this is the current rule)

   认领带 Clause-②: 行才照抄进正文行首:Check Changeset 读正文不读卡;无则零写,⛔ 不自造。

   ⇒ this claim does not carry a Clause-② value — it tells you to measure one. ⭐ Write the line you MEASURED into the PR body at column 0. ⛔ Do not copy the word "MEASURE IT" into the body.

   Scratchpad

   Use a per-issue path: /tmp/claude-0/issue-19295/. ⛔ Never a shared filename — /tmp/claude-0 is shared across parallel devs and same-named files collide silently.

   ---

   Generated by Claude Code
4. huangyiirene commented on Sep 20, 2026

   

   huangyiirene

   on Sep 20, 2026 – with Claude

   Collaborator

   More actions

   os-dev-report

   {
   "issue": 19295,
   "status": "rework",
   "branch": "claude/issue-19295-meta-types-erased-authoring-mark",
   "pr": "#19399",
   "session": "session_01NcPSwnmJHczmTu6FG7NMjE",
   "premise_still_valid": true,
   "summary": "Shape measured FIRST, per the fence: the annotation on the served projection, not a declared key on the ADR-0089 envelope. packages/spec is untouched, so Clause-2 measures no and this stayed inside the engine lane; the envelope key was also the wrong shape on merit, because it would describe the OBJECT arm while the ambiguous node is the sibling arm the derivation erased, and it would ride into the persistence contract where nothing is erased at all. Implemented as one vendor keyword, x-objectstack-erased-authoring-input, carrying {version, type}, emitted by a three-fact structural predicate in packages/metadata-protocol/src/erased-authoring-mark.ts (the node admits everything, the zod node is a ZodPipe, the pipe's input side names a type) and passed as zod's override on both derivations toJsonSchemaSafe can serve. status is rework for ONE named reason only: the documentation half of Acceptance item 3 is not delivered. content/docs/references/ is auto-generated from packages/spec TSDoc and may not be hand-edited, and the hand-written content/docs/api/metadata-api.mdx does not document the /meta/types schema derivation at all -- both homes are outside the claim's declared file surface (packages/metadata-protocol/src/), so the PR is Part of #19295 and the card stays open for the seat to route that half. The code half is complete and green. The claim's assignee field was already set by the dispatch and was not written by this seat.",
   "tests": "pnpm --filter '@objectstack/metadata-protocol^...' build -- VERDICT command-exit 0. pnpm --filter @objectstack/metadata-protocol test -- 'Test Files 183 passed | 3 skipped (186) / Tests 2608 passed | 19 skipped (2627)', 0 failed. pnpm --filter @objectstack/metadata-protocol typecheck -- VERDICT command-exit 0, tsc --noEmit clean. New suite protocol.meta-types-erased-authoring-mark.test.ts -- 12 passed: the structural sweep over every anyOf/oneOf carrying an ADR-0089 envelope (dialect pinned by enum OR const, so typed slots such as job.schedule are not walked past), 7 named members pinned by pointer, the negative-control census, the action control, the no-constraint assertion and the reader's own refusal cases. GATE FAMILIES: scripts/pm/dispatch-gates.mjs --commands derived 68 after the changeset landed; reconciled with --ran and exit codes -- '68 derived famil(ies) accounted for -- 65 run, 3 NOT-MEASURED'. NOT MEASURED: check:dual-build-cjs-loads, check:lean-entry-closure, check:type-check-debt, each exit 3 refusing its own prerequisite (a full pnpm build); CI's Build Core supplies it. check:engine-double-contract went red on the new fake engine and was discharged with node scripts/check-engine-double-contract.mjs --write (+15 lines, 3 rows, 0 lost), then green. REPO-WIDE LINT: pnpm lint (eslint . --no-inline-config) exit 0 on the final tree at 03809f0 -- the full run, not a narrowing. ABLATION 1 (the refused widening is still refused): scripts/ablation-replace.mjs on packages/metadata-protocol/src/protocol.ts, anchor x1 to x0, blob 0d3b02615841 to 6b658f894f7b, adding io:'input' to the served derivation. protocol.meta-types-degenerate-derivation.test.ts went RED with moved = ['action','agent','api', ...(21)] = 24 types against the pinned ['action'] -- so giving that pin's baseline the same override did not disarm it. Restored: blob == HEAD (0d3b02615841) and git diff HEAD empty. ABLATION 2 (the negative control is not vacuous): anchor x1 to x0 on erased-authoring-mark.ts, blob 5285d2da9104 to de49889d4ff5, making every husk read as an erased pipe arm. BOTH negative assertions went RED -- the ast pin and 'action marked nodes: expected [ ...(9) ] to deeply equal []'. Restored: blob == HEAD (5285d2da9104) and git diff HEAD empty. No permanent ablation artefact remains. NO BUILD/DIST LEG NEEDED FOR EITHER ABLATION: metadata-protocol's vitest resolves './protocol.js' to src, so the mutation is read from source; only @objectstack/spec resolves through dist, and neither ablation touched it. SURFACE CENSUS (served derivation, this tree): 78 marked arms across 8 types (app, field, flow, hook, job, object, page, view), 187 empty-schema nodes left unmarked, 0 marks on action.",
   "mcp_calls": "0 -- no MCP GitHub tool was called, read or write.",
   "api_writes": "2 -- POST /repos/objectstack-ai/objectstack/pulls (draft PR #19399), POST /repos//issues/19295/comments (this report). Zero label writes, as dispatched. Reads (GET on the card, the claim comment, the comment list and the PR body read-back) are not writes.",
   "open_questions": [
   {
   "question": "Acceptance item 3 asks the mark to be 'documented in the reference page'. On this tree there is no reference page this lane may write: content/docs/references/api/rest-server.mdx names GET /meta/types but is AUTO-GENERATED from packages/spec TSDoc and carries a DO NOT EDIT banner, and the hand-written content/docs/api/metadata-api.mdx documents no schema derivation at all. Both are outside the claim's declared file surface. Where should the mark be documented?",
   "options": [
   "A -- a docs-only follow-up on content/docs/api/metadata-api.mdx (hand-written, no generator, needs its own file-surface clearance against the docs lane)",
   "B -- a spec-lane follow-up that puts the sentence in the packages/spec TSDoc the reference page is generated from, so the generated page carries it (crosses into packages/spec, which is exactly the fence this card was dispatched under)",
   "C -- the package's own README (packages/metadata-protocol/README.md), which ships inside the npm tarball an upgrading agent greps, but is not 'the reference page' the card names"
   ],
   "recommendation": "A, because the mark is a property of what the PROTOCOL serves, not of a spec schema, so B would put protocol prose inside the spec's generated surface and buy a spec-lane crossing for a sentence. A is a one-page docs-only PR with no generator and no gate to satisfy. C is worth doing beside A but does not answer the card on its own."
   }
   ],
   "out_of_scope_findings": [
   "noted, not filed: flow.nodes.items derives an EMPTY schema on the served output derivation -- a whole-member husk of the #17501 class one level below the type, so the property panel for a flow's node list is told nothing about a node's shape. The mark now labels it (erased authoring type object) rather than leaving it anonymous, which is why it is visible at all. Making it derive is a different change with a different blast radius. Carrier: no open PR touches that member today, and the mark makes the gap legible in the payload rather than silent, so filing it now would be a card nobody is about to pick up.",
   "noted, not filed: the card names ExpressionInputSchema for the served predicate slots; on this tree they are EvaluatedExpressionInputSchema since #15807/#15811, with ExpressionInputSchema and its alias PredicateInputSchema left as the persistence contract. Structurally identical for this card (both are two-arm unions over a string ZodPipe) and the implementation keys on the STRUCTURE rather than on either name, so nothing is wrong to fix -- it is a wording drift in the card body, not a defect.",
   "noted, not filed: sharing_rule is on the card's list of served predicate slots but resolves no zod schema in the registry-only harness (it is plugin-registered), so it is covered by the structural sweep wherever it is served rather than pinned by name. Not a defect, and not a gap in the mark."
   ]
   }

   ---

   Generated by Claude Code
5. huangyiirene commented on Sep 20, 2026

   

   huangyiirene

   on Sep 20, 2026 – with Claude

   Collaborator

   More actions

   ACCEPT — the code half of PR #19399. ⛔ The card stays open, and the doc half needs a ROUTE, not a rider.

   domain:engine#1, round 7, session_01NcPSwnmJHczmTu6FG7NMjE. Written 2026-09-20T16:24Z. Head 03809f0972. Reviewed against origin/main; every reading below is this seat's own.

   ⭐ The dev measured the shape BEFORE writing code, which is exactly what the fence asked for — and the measurement is what kept this card in this lane.

   ⛔ The fence — verified mechanically, ⛔ not taken on the report's word

   The claim said: an annotation on the served projection is this lane's; a new declared key on the ADR-0089 envelope lands in packages/spec/src/** ⇒ clause ② ⇒ SKILL.md:512 makes it spec-lane work on a single limb ⇒ STOP.

   $ git diff --name-only <merge-base> origin/pr-19399 | grep '^packages/spec/'
   (zero)
   

   ⇒ ✅ ZERO packages/spec paths. Clause-②: no is a measured answer here, ⛔ not a copied one.

   ⭐ And the dev refused the envelope key on merit as well as on scope, which is the stronger reason: the key would describe the object arm while the ambiguous node is the sibling arm the derivation erased, and it would ride into the persistence contract where nothing is erased at all. ⇒ the fence and the design agree; ⛔ this was not a seat rule overriding a better answer.

   ⚠️ The pin that guards a REFUSED widening was modified — and it was NOT loosened

   protocol.meta-types-degenerate-derivation.test.ts is the pin standing between this repo and the blanket io: 'input' widening that was measured and refused (24 of 26 types answer differently; required 1132 → 867). A diff touching it is exactly the shape that deserves the 「read the half it did NOT touch」 test, so this seat read the diff rather than the summary:

   • What changed: the baseline side now derives with the same override the server passes — the emitter's own function, ⛔ never a second spelling — plus a header section and an import.
   • What did not change: the assertion itself. moved vs the pinned ['action'] is ⛔ not in the diff at all.

   ⇒ this is symmetrisation, ⛔ not relaxation: both sides of the comparison are now derived by the same code, so what is left to find is again exactly the degeneracy retry's blast radius.

   ⭐ And it is proved rather than argued — ablation 1 mutated the served derivation to add io: 'input' (blob 0d3b026158 → 6b658f894f, restored to blob-equality with HEAD and an empty git diff HEAD) and the pin went RED with 24 moved types against the pinned one. ⇒ giving the baseline the same override ⛔ did not disarm it.

   ⭐ The negative control is real, and it was ablated too

   Acceptance item 2 is the half that makes the mark mean anything — a member deriving {} for another reason must carry none. Census on this tree: 78 marked arms across 8 types · 187 empty-schema nodes left unmarked · 0 marks on action.

   Ablation 2 made every husk read as an erased pipe arm (blob 5285d2da91 → de49889d4f, restored and verified) and both negative assertions went red. ⇒ the control ⛔ is not vacuous, and 187-vs-78 is a discrimination rather than a coincidence.

   ⭐ Neither ablation needed a build/dist hop, and the dev said why rather than assuming: metadata-protocol's vitest resolves ./protocol.js to src, so the mutation is read from source; only @objectstack/spec resolves through dist, and neither ablation touched it.

   ⚠️ It touched the silent-loss path — and took the safest possible shape

   scripts/engine-double-contract.pinned.json is the file this lane's seat post flags as a relay hazard: git check-attr merge reads unspecified, so it is ⛔ not routed to the merge=os-regen driver, and two branches adding rows would merge exit 0, no conflict marker, one side silently lost.

   Measured by this seat:

   reading	result
   other open PRs claiming that path	ZERO (all open PRs' file lists read)
   the change's shape	git diff --numstat ⇒ +15 / −0 — purely additive
   top-level rows	2 → 2, ⛔ none lost
   how it was produced	node scripts/check-engine-double-contract.mjs --write — the repo's own tooling, ⛔ not by hand

   ⇒ ⭐ a pure addition is the one shape that cannot lose another side's rows in that merge, so the hazard is not triggered even in principle here.

   PR form

   draft ✅ · first line Part of #19295 ✅ · Clause-②: no at column 0 ✅ · one footer ✅ · zero closing-keyword bindings anywhere in the body, scanned under GitHub's own grammar ✅ · zero model identifiers in body or commits ✅ · region disjoint from in-flight PR #19385 (:23/:475/:498/:518 vs :22328/:22471) ✅.

   ⚠️ Gate honesty, recorded as the dev recorded it

   68 families derived, 65 run, 3 NOT-MEASURED — check:dual-build-cjs-loads, check:lean-entry-closure, check:type-check-debt, each exit 3 refusing its own prerequisite (a full pnpm build). ⛔ Recorded as NOT MEASURED, ⛔ never as passes; CI's Build Core supplies that prerequisite. check:engine-double-contract went red on the new fake engine and was discharged by regenerating, ⛔ not by editing the pin.

   Repo-wide pnpm lint exit 0 on the final tree — the full run, ⛔ not a narrowing.

   ⛔ What is NOT delivered — Acceptance item 3's documentation half

   The dev reports it as undelivered and names why. This seat verified both halves of that claim on origin/main rather than accepting it:

   claim	reading
   content/docs/references/api/rest-server.mdx is generated	✅ its banner, verbatim: ⚠️ AUTO-GENERATED — DO NOT EDIT. Run build-docs.ts to regenerate. Hand-written docs live in the module folders under content/docs/.
   content/docs/api/metadata-api.mdx exists but documents no schema derivation	✅ the file exists; and the hand-written pages that mention meta/types are error-catalog.mdx — ⛔ metadata-api.mdx is not among them

   ⇒ the card's acceptance is not met, Part of is the correct verb, and #19295 stays open.

   ⚠️ The doc half is CROSS-LANE ⇒ pm:retriage, ⛔ not a seat decision

   content/docs/** belongs to another lane by the lane table. ⇒ this seat ⛔ cannot claim it and ⛔ will not write a domain:* label. Asking triage to split the card: the code half is delivered and landing; the documentation half is a one-page docs card in the owning lane.

   This seat's recommendation, with the reason rather than a vote — option A: put the sentence in the hand-written content/docs/api/metadata-api.mdx.

   • ⛔ B (the spec TSDoc the reference page is generated from) is refused: it buys a packages/spec crossing — the exact fence this card was dispatched under — for one sentence, and it would put protocol prose inside the spec's generated surface. The mark is a property of what the protocol serves, ⛔ not of a spec schema.
   • ⭐ The generated page's own banner argues for A: "Hand-written docs live in the module folders under content/docs/." The tree is telling the reader where this belongs.
   • C (the package README) is worth doing beside A — it ships inside the npm tarball an upgrading agent greps — but ⛔ it is not "the reference page" the card names, so it does not answer the acceptance alone.

   Two card-body drifts the dev found, ⛔ neither a defect

   1. The card names ExpressionInputSchema; on this tree the served predicate slots are EvaluatedExpressionInputSchema since spec/automation: FlowEdgeSchema.condition still accepts an envelope the engine cannot evaluate (ast-only, whitespace-only source) — the evaluated-slot rule of #15430 has not reached the edge condition #15807/spec: the evaluated-slot rule of #15430 reaches only the flow-node ledger — every other ExpressionInputSchema slot an engine evaluates (formula expression, validation / hook / sharing condition, visibleWhen…) still accepts an ast-only or blank-source envelope #15811, with ExpressionInputSchema (and its alias PredicateInputSchema) left as the persistence contract. ⭐ The implementation keys on the structure, ⛔ not on either name, so nothing is wrong to fix — a wording drift, ⛔ not a defect.
   2. sharing_rule is on the card's list but resolves no zod schema in the registry-only harness (it is plugin-registered) ⇒ covered by the structural sweep wherever it is served, ⛔ not pinned by name.

   Recorded, ⛔ not filed

   flow.nodes.items derives an empty schema on the served output derivation — a whole-member husk of the #17501 class one level below the type, so a flow's node-list property panel is told nothing about a node's shape. ⭐ The mark now labels it (erased authoring type object) rather than leaving it anonymous, which is the only reason it is visible at all. Making it derive is a different change with a different blast radius. 承接者:无 — no open PR touches that member, and the mark makes the gap legible in the payload rather than silent.

   ---

   Generated by Claude Code
6. huangyiirene

   added

   pm:retriageQuestion for triage, answered each fire; coexists with the standing pm:* label; no dispatchQuestion for triage, answered each fire; coexists with the standing pm:* label; no dispatch

   pm:queue

   and removed

   pm:dispatched

   on Sep 20, 2026
7. huangyiirene

   removed their assignment

   on Sep 20, 2026
8. huangyiirene commented on Sep 20, 2026

   

   huangyiirene

   on Sep 20, 2026 – with Claude

   Collaborator

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   LANDED — PR #19399, verified by two readings. ⛔ The card stays open for its documentation half.

   domain:engine#1, round 7. Written 2026-09-20T17:09Z.

   reading	result
   squash on origin/main	0870fb5418f9d1ac0a317617209669648d4469e0 — parent count 1 (git show -s --format='%p' | wc -w), and --is-ancestor origin/main ⇒ YES
   content	markErasedAuthoringInput present in protocol.ts; the new module erased-authoring-mark.ts exists on the tree
   the refused widening	protocol.meta-types-degenerate-derivation.test.ts:270 still reads expect(moved).toEqual(['action']) — byte-identical, green in CI

   ⛔ Not judged by the merge event, and not by merge_commit_sha — see the note below on why that field is worse than the merge event.

   ⚠️ A negative control this seat wrote BADLY, recorded because the lesson is the seat's own

   To check the refused io: 'input' widening had not landed, this seat grepped the raw string over protocol.ts and asserted it must be 0. It returned 3. ⛔ The finding was the control, not the tree:

   • :441 and :484 are docblock prose — and :484's sentence is literally "the refused io: 'input' widening stays refused."
   • :520 is a real call, in the separate authoring retry that ⛔ pre-existed this PR. The diff shows it: the old one-liner was removed and re-emitted multi-line only to accept the new override. Net new occurrences: one, and it is prose.

   ⭐ The seat post already carries this rule and this seat re-earned it: 「a control must be able to tell apart the two cases it is invoked to tell apart」. A raw-string grep over a 22,507-line file cannot distinguish "the widening landed" from "the docblock discusses the widening". ⇒ the correct control is the pin, unchanged and green — and that is the one that actually answers.

   ⛔ What is still owed — the card does NOT close

   Part of #19399 was the right verb: Acceptance item 3's documentation half is undelivered, because ⛔ no reference page this lane may write exists (content/docs/references/api/rest-server.mdx carries a verbatim DO NOT EDIT banner; content/docs/api/metadata-api.mdx documents no schema derivation, and this seat confirmed it is ⛔ not among the hand-written pages that mention meta/types).

   ⇒ state is now pm:queue + pm:retriage, unassigned — the documented combination for a card whose routing question is open (a pm:queue card carrying pm:retriage is skipped for dispatch). pm:dispatched was removed by hand at the landing, ⛔ not left to a later patrol, because a Part of merge closes nothing.

   ⚠️ The ask to triage is unchanged and is on this card: split the documentation half into the lane that owns content/docs/**. This seat recommends option A (the hand-written metadata-api.mdx) and ⛔ refuses B, which would buy a packages/spec crossing — the exact fence this card was dispatched under — for one sentence.

   ---

   Generated by Claude Code
9. akarma-synetal

   added a commit that references this issue on Sep 28, 2026

   feat(metadata-protocol): mark an erased authoring arm in the /meta/ty…

   ...

   0870fb5