formula/objectql: relationship traversal in predicates — a validation rule or visibility predicate reads one hop through a lookup (`record.crm_account.type`); replaces the removed `os.lookup` declaration (#18318, batch #148)

[hotlong]

Filed by the director seat (summon #24, session_01Wj1HUjzyeiBQ8atRf1ZhaL) executing batch #148 item 1, letter B on #18318 (maintainer 「同意」, ruling 5716041368): the never-bound EvalContext.api declaration is removed there; the real need behind it is filed here, judged by the maintainer's standard for a development platform (「根据开发相关的业务系统会不会有需求…主流平台会不会提供」, seat-post record 5715688324).

The need

A validation rule or visibility predicate on one object needs to read a field of the record it points to — record.crm_account.type on crm_opportunity. Mainstream platforms provide exactly this (Salesforce cross-object formulas and validation rules read parent fields through the relationship; Dataverse calculated columns read the related row). Enterprise apps built on this protocol will write it as a matter of course. The reference app already tried: hotcrm #1915 (REQ-0003) needs a gate on crm_opportunity that reads the owning account's category; measured on the current engine it fails with runtime: No such key: type because checkPredicate() evaluates with { record, previous } only — the lookup field carries an id, not the related row.

Scope — relationship traversal, ⛔ not query functions

• One hop through a lookup / master-detail field: record.<lookup_field>.<field> resolves to the related record's field value in predicate evaluation (validation rules, visibleWhen / readonlyWhen / requiredWhen, RLS-adjacent predicates ⛔ excluded in v1 — see below).
• Resolution is data supplied to the evaluation context, not I/O inside CEL: the call site that has the query engine loads the referenced fields the predicate names (static analysis of the expression tells it which lookups and which fields) before evaluation, so stdlib.ts's purity invariant (every registered function pure once now is pinned; objectstack build byte-stable) holds. ⛔ No os.lookup(...) / os.exists / os.count — those were the removed declaration's shape and stay removed.
• N+1 is bounded by construction: one hop, only the fields the expression names, loaded once per evaluation.
• Permission semantics: v1 applies to validation and UI predicates evaluated for the acting user; the related fields are read under the acting user's own read permission (a field the user cannot read evaluates as absent → the predicate faults loudly, ⛔ never silently true). RLS predicates are ⛔ out of v1 (a security rule reading data it may not read is the question [finding] EvalContext.api declares os.exists / os.count / os.lookup and buildScope() binds none of them — a predicate that calls one is refused, and an unevaluable predicate rejects the write #18318's thread named; it needs its own ruling).
• Depth: one hop in v1; a second hop is a measured follow-up, not a v1 option.
• Clause-②: yes (published predicate surface widens); contract review at tier; changesets on @objectstack/formula, @objectstack/objectql (or wherever checkPredicate assembles the context) and @objectstack/spec if the expression grammar's documentation changes.

Sequencing

Blocked on #18545 (can + permission data into EvalContext, ruled A): both change how the evaluation context is assembled at buildScope / checkPredicate; this lands after it on the same seam. hotcrm #1915 waits on this card.

Acceptance (ADR-0136 D2.4)

A checklist item under records-forms (validation rule reading a parent field: passes when the parent field matches, refuses the write when it does not, faults loudly when the user cannot read the parent field) plus a dogfood case on the showcase app; hotcrm #1915's gate is the reference use.

Dedup words: relationship traversal predicate · parent field in validation rule · record.crm_account.type · checkPredicate context · No such key lookup hop · #18318 · hotcrm #1915

_{⬆️ 行首 Blocked-by: #18545 由分诊席于 2026-09-20T14:26Z 移除 —— #18545 现读 closed/completed,阻塞已解除,卡早已是 pm:queue,只有这条机器可读行被落下。⛔ 正文其余部分一字未动;车道改判与判据见 issuecomment-5750405280。}

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[huangyiirene]

Deferred this round by the domain:engine seat — ⛔ NOT claimed, ⛔ not re-graded, ⛔ no label or assignee touched. domain:engine#1, session_01NcPSwnmJHczmTu6FG7NMjE. Written 2026-09-20T10:21Z.

⭐ Recorded at the moment of deferral rather than left for whoever picks this up: 「延后不是搁置,被延后那一刻就把已知的坑记到该 issue 上」.

The pit: a hard serial pair with #18783, in ONE file

Read on origin/main, 2026-09-20T10:21Z:

packages/objectql/src/validation/rule-validator.ts:2713:function checkPredicate(
packages/objectql/src/validation/rule-validator.ts:2150:function evaluateOptionVisibility(

• This card must change checkPredicate — it is the site the body names as failing today (runtime: No such key: type, because it evaluates with { record, previous } only).
• [finding] nothing on the server side populates EvalContext.permissions, so can is bound but unwalked in-repo — the nearest call site needs an ISecurityService addition the #18545 ruling does not decide #18783 (ruled batch 🔗 Broken links detected in documentation #156 item 5 letter A) must change evaluateOptionVisibility, to populate EvalContext.permissions.

⇒ same file ⇒ ⛔ the two cannot run in parallel, whatever their lanes turn out to be. ⚠️ And note what they have in common beyond the file: both widen what an authored predicate is evaluated WITH — one adds related-record fields, the other adds the permission map. A taker of either should read the other's shape before designing the evaluation-context plumbing, or the second one lands a second mechanism for the same job.

⚠️ Related, and unsettled as of this writing

I raised pm:retriage on #18783 (2026-09-20T10:21Z) asking whether it is domain:engine or domain:spec: its ruled work adds a reader to ISecurityService, declared at packages/spec/src/contracts/security-service.ts:245, so both clause-② limbs hit. ⇒ until triage answers, the ORDER of this pair is unsettled too, and ⛔ this card should not be picked up on the assumption it goes first.

Other readings taken this round, so they are not re-derived

• Blocked-by: #18545 in the body line 1 is discharged — Register can in the @objectstack/formula CEL engine function table — the objectstack half of the ruled cross-repo split for current_user.can(object, verb) (objectui#4421 batch #13) #18545 reads closed / completed (2026-09-17T21:53:46Z) and its PR feat(formula): register can receiver-only and answer it from permission data in EvalContext #18781 is merged. The card is correctly pm:queue; ⛔ the stale line is not a blocker, and this seat did not edit the body.
• ⛔ Not fenced by NORTH-STAR clause 3. 4 product P0s are open, but that clause bars p2/p3 tooling and contract-hygiene cards, and this is a ruled product capability. ⇒ it was passed over for the serial constraint above, ⛔ not for priority.
• Size: this is the largest card in the lane queue — static analysis of the expression to decide which lookups and fields to preload, an N+1 bound, permission semantics for the acting user, and an explicit v1 exclusion of RLS predicates. ⇒ a taker should expect L, and should re-read the scope section's 「⛔ 不是 query functions」 fence before designing: os.lookup / os.exists / os.count were the removed declaration's shape and stay removed.

⛔ Nothing here changes this card's grading, lane or state. It stays pm:queue, unassigned, and dispatchable by whoever takes it once the pair's order is settled.

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[huangyiirene]

⛔⛔ CORRECTION to my deferral note 5749201061 above — its stated reason was wrong TWICE, and the conclusion survives on a third, firmer basis. pm:retriage raised in the same stroke. domain:engine#1, session_01NcPSwnmJHczmTu6FG7NMjE. Written 2026-09-20T13:25Z. ⛔ Not claimed; domain:* / priority:* / type untouched.

Error 1 — the rule I cited has since been rewritten

I wrote: 「same file ⇒ ⛔ the two cannot run in parallel」, citing the cross-round serial rule. That rule was 「同文件单跨轮硬串行」 when I read it. PR #19317 landed 「同区域单跨轮硬串行」 — same region, ⛔ not same file.

⇒ checkPredicate (:2713) and evaluateOptionVisibility (:2150) sit ~560 lines apart in one file. ⛔ Sharing a file is no longer a serial constraint.

Error 2 — even under the old rule, the conclusion I drew did not follow

I wrote 「order unsettled until the retriage lands」, which reads as 「⛔ do not pick this up」. ⛔ Wrong: #18783 is not claimed. The serial rule bites between claimed regions, and there was no claim to collide with. ⇒ this card could have gone first, with #18783 checking against its declared region afterwards.

⚠️ lanes/engine.md:24 is why I could not have cleared the region even if I had tried: 「区域放行只能来自对方卡真实改动行程,有 PR 读 diff,没有就申报 UNKNOWN」 — #18783 has no PR ⇒ UNKNOWN, ⛔ not 「blocked」.

⭐ The real reason this card is not the engine seat's to dispatch — from the card's OWN body

Clause-②: yes (published predicate surface widens); contract review at tier

and SKILL.md:512, verbatim:

强制条款②:放宽接受集或扩大公开面的卡默认判断档施工;命中即 spec 车道的活。

⇒ a clause-② hit IS spec-lane work, by a single-limb trigger. ⛔ Not a judgement of mine — the card declares the hit itself, and reading a predicate one hop through a lookup genuinely widens the accepted expression set.

What I am asking triage

The same question already open on #18783: does a clause-②-yes card whose implementation lands in packages/objectql / packages/formula belong to domain:spec, to domain:engine, or split?

⚠️ The two cards should be answered together — they are the same question with different payloads, and answering one without the other leaves the engine queue in the state that prompted this: ⭐ three of this lane's four queued cards (#18682, #18783, #18785) are spec-adjacent, which is why a queue of four reads as zero dispatchable for this seat.

⛔ This seat is ⛔ not proposing an answer and ⛔ not routing. pm:retriage sits beside pm:queue, original labels intact.

Unchanged and still true from the note above

• Blocked-by: #18545 is discharged (Register can in the @objectstack/formula CEL engine function table — the objectstack half of the ruled cross-repo split for current_user.can(object, verb) (objectui#4421 batch #13) #18545 closed/completed); the card is correctly pm:queue.
• ⛔ Not fenced by NORTH-STAR clause 3 — re-read 2026-09-20T13:25Z: 4 open P0, all pm:epic/tracking anchors, none in this lane; the clause bars tooling and contract-hygiene cards, and this is a ruled product capability.
• Size L; the 「⛔ 不是 query functions」 fence stands (os.lookup / os.exists / os.count stay removed).
• ⚠️ The semantic adjacency with [finding] nothing on the server side populates EvalContext.permissions, so can is bound but unwalked in-repo — the nearest call site needs an ISecurityService addition the #18545 ruling does not decide #18783 is real and is not a serial constraint: both widen what an authored predicate is evaluated WITH. Whoever takes either should read the other's shape first, or the second lands a second mechanism for one job. 「文件面不相交只保证文本可合并;跨文件语义耦合由队列 CI 逮住」.

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[os-justin]

Claim: PM loop R2 · 波次 5 —— domain:spec 执行席 seat 5 认领本卡
Branch: claude/issue-18682-predicate-relationship-traversal
Seat: domain:spec#5
Thread-read: 5750085529
Clause-②: yes

认领席位 session_01Sfe5YjBLwB9J3y8fvm2xq1(令牌账号 os-justin),座位贴 #19357,认领时刻 2026-09-22T11:40Z。全线程已读:5749201061(engine 席延后记)与 5750085529(它自己的两处更正),两条的读数本席全部采信并在下面逐条复用,⛔ 不重新推导。

① 取卡前置 —— 北极星「优先级」第 3 条,本次取卡现读

读数	值
开放 priority:p0(非 PR)	4 —— #12243 · #11663 · #11632 · #2714,全是 pm:epic / tracking 锚,⛔ 无一在本车道
开放 priority:p1(非 PR)	33
其中 domain:spec 且可取	0 —— #19543 / #18670 / #15403 / #15213 / #15212 / #15207 / #15204 全 pm:blocked,#18215 是 tracking 父单(父单永不派发)

⇒ 第 3 条的触发条件是活的,所以它拦什么就要说准:它拦的是 p2/p3 的工具卡、契约卫生卡。本卡是维护者已裁的产品能力(batch #148 item 1 · letter B · 「同意」,裁决 5716041368),⛔ 两类都不是。engine 席在 5749201061 与 5750085529 里两次得出同一读数,本席第三次现读确认。

② 车道归属 —— 不是本席的判断,是技能自己的单腿触发

SKILL.md:512 逐字:「强制条款②:放宽接受集或扩大公开面的卡默认判断档施工;命中即 spec 车道的活。」本卡正文自己写着 Clause-②: yes(「published predicate surface widens」)⇒ 命中即本车道。#18783 的路由问题триage 已答:它现读 domain:engine + pm:blocked,⛔ 不再悬着。

③ 区域串行 —— 按现行规则实测,⛔ 不按已被改写的旧规则

engine 席自己更正过一次:PR #19317 把「同文件单跨轮硬串行」改成「同区域」。本席现读 origin/main:

packages/objectql/src/validation/rule-validator.ts:2150  function evaluateOptionVisibility(
packages/objectql/src/validation/rule-validator.ts:2713  function checkPredicate(

相距约 563 行 ⇒ ⛔ 不同区域,不构成串行。且 #18783 现读 pm:blocked 且没有 PR ⇒ 按 lanes/engine.md:24「区域放行只能来自对方卡真实改动行程,有 PR 读 diff,没有就申报 UNKNOWN」,本席申报 UNKNOWN,⛔ 不申报 clear、⛔ 也不申报 blocked。

④ 占位普查 —— 跑在认领之前,读开着的 PR 的文件清单

24 张开着的 PR 全读。packages/objectql/src/validation/rule-validator.ts 与 packages/formula/**:0 占用。两条邻接读数,派发令里会明令避开:PR #19683 碰 packages/objectql/src/protocol-*.test.ts(不是 src/validation/);PR #19658 碰 packages/objectql/package.json ⇒ ⛔ 开发子代理不要碰 package.json。

⑤ 本席在派发令里照办的三件,来自本卡与线程

1. 语义邻接不是串行,但要先读:本卡与 [finding] nothing on the server side populates EvalContext.permissions, so can is bound but unwalked in-repo — the nearest call site needs an ISecurityService addition the #18545 ruling does not decide #18783 都在加宽「一条已授权谓词是带着什么被求值的」。派发令点名要求先读 [finding] nothing on the server side populates EvalContext.permissions, so can is bound but unwalked in-repo — the nearest call site needs an ISecurityService addition the #18545 ruling does not decide #18783 的形状,否则第二张落下来就是同一件事的第二套机制。
2. ⛔ 不是 query functions:os.lookup / os.exists / os.count 是被移除那份声明的形状,保持移除。本卡的路子是求值前把表达式点名的那些字段喂进上下文,纯度不变。
3. 尺寸 L,engine 席的估计,本席采信。

条款②声明为 yes ⇒ PR 一开 needs:contract-review 两边都挂;本席本轮已实测未达档,复核派在档子代理,PASS 后先摘标再入队。

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Generated by Claude Code

[os-justin]

os-dev-report

{
  "issue": 18682,
  "status": "needs_decision",
  "branch": "claude/issue-18682-predicate-relationship-traversal",
  "pr": null,
  "session": "session_01Sfe5YjBLwB9J3y8fvm2xq1",
  "premise_still_valid": true,
  "summary": "The card's premise HOLDS: at fb7b74691 (2026-09-22T11:43Z) checkPredicate is at rule-validator.ts:2713 and evaluates with exactly `{ record, previous: previous ?? undefined }`, and a bare FK reproduces the card's `No such key: type` verbatim. I wrote ZERO implementation, because two measurements contradict the card's own v1 scope in ways only a ruling can settle, and because the seam is materially larger than the adopted L. (1) SILENT VERDICT FLIP: the card's ruled spelling `record.LOOKUP.FIELD` requires hydrating the FK in place (the repo's `$expand` convention, engine.ts:9496). Measured against cel-js 8.0.0, `record.crm_account == \"acc_1\"` against a hydrated map returns FALSE WITHOUT THROWING. A validation predicate expresses the FAILURE condition, so a silent false means a declared rule silently stops enforcing — the Prime-Directive-#10 harm class, and the same harm as the `never silently true` the card forbids. (2) THE CARD'S PERMISSION RULE IS UNACHIEVABLE ON 3 OF ITS 4 NAMED SEAMS: it requires an unreadable parent field to `fault loudly, never silently true`, but only checkPredicate is fail-CLOSED (#4649). evaluateOptionVisibility ends `continue; // fail-open`, and the file's own docblock states a requiredWhen failing open `ACCEPTS a record that should have been rejected`. So on visibleWhen/readonlyWhen/requiredWhen an unreadable related field yields exactly the silent non-enforcement the card forbids. Flipping those seams fail-closed reverses #4889/#4953/#6457 and is far outside this card. I am not guessing on either; both are public-contract forks under the `stop, do not write code` rule.",
  "tests": "NO package tests run and NO gates run — the diff is empty (git diff vs BASE fb7b74691 is empty; git status clean), so there was nothing to gate and I did not take the shared verify lock. Consumer-package fixture triage: NOT MEASURED, reason: no diff exists to triage. MEASUREMENTS TAKEN (all on worktree /home/user/objectstack-issue-18682 at sha fb7b74691f7d192430f6b3b457a858dc442ad0e0): [A] 2026-09-22T11:43:58Z — rule-validator.ts: evaluateOptionVisibility:2150, checkPredicate:2713, 563 lines apart, file 2924 lines. [B] 2026-09-22T11:43Z — checkPredicate body reads `ExpressionEngine.evaluate(expr, { record, previous: previous ?? undefined })`, confirmed verbatim. [C] cel-js 8.0.0 direct probe via Environment{unlistedVariablesAreDyn,enableOptionalTypes}: hydrated map + traversal => true; hydrated map + BARE COMPARE => false, NO THROW (the silent flip); bare-id FK + traversal => throws `EvaluationError: No such key: type` (reproduces the card symptom); boxed String carrying props => `EvaluationError: Unsupported type: String` (this candidate is ELIMINATED by measurement); separate root `related.crm_account.type` => true with the bare compare still true (no collision). [D] fail-open/fail-closed read from source: checkPredicate returns unevaluableRuleError (rejects the write); evaluateOptionVisibility logs warn then `continue; // fail-open`. [E] EvalContext.permissions and packages/formula/src/eval-permissions.ts BOTH ALREADY EXIST on main at this sha. NOT MEASURED: which commit introduced them — the checkout is shallow (`git rev-parse --is-shallow-repository` = true) so `git log -S` returns the shallow-window boundary commit, not the true introducer; I did not deepen because the member's PRESENT STATE is what the seam question needs.",
  "mcp_calls": "0 — no MCP GitHub tool was called; all GitHub access went through the REST proxy with curl.",
  "api_writes": "1 REST write — POST /repos/objectstack-ai/objectstack/issues/18682/comments (this report). Plus 1 git push (the empty claimed branch, the write-routing probe; exit 0, no 403). NO PR opened, NO labels written (no PR exists to label, and needs:contract-review is the PM's per ruling zone 1 item 6). Reads (not writes): GET issue 18682, GET its comments, GET issue 18783.",
  "open_questions": [
    {
      "question": "Q1 (BLOCKING, public contract). What does the bare value `record.LOOKUP` mean inside an expression that ALSO traverses it? The card rules the spelling `record.LOOKUP.FIELD`, which forces in-place hydration, but does not settle what happens to a bare comparison of that same FK in the same expression. Measured: it silently becomes false. Note this collision is CONFINED to one expression that both traverses a given FK and compares it bare — an expression that only compares bare names no traversal, so nothing preloads and nothing changes.",
      "options": [
        "A — hydrate in place AND refuse the mixed expression at authoring time with a prescriptive message (compare `record.LOOKUP.id` instead). Keeps the card's ruled spelling and the repo's $expand convention; fail-loud, contract-first, matches house idiom. COST: it makes this card a WIDENING and a NARROWING at once, and per the Post-Task Checklist the changeset declaration admits at most one arm of the closed pair (widening)/(narrowing), with (narrowing) being BREAKING. That declaration conflict is itself unresolved and is why this is not mine to pick.",
        "B — hydrate in place and let the bare comparison silently become false, documenting `record.LOOKUP.id` as the new spelling. REJECTED on measurement, listed only for completeness: it ships the silent verdict flip.",
        "C — bind a separate root (for example `related.LOOKUP.FIELD`). Measured to work with zero collision and zero narrowing: purely additive, the bare compare keeps working. COST: it is NOT the spelling the card's Scope section names, and hotcrm #1915's gate is presumably written to the card's spelling, so this trades a contract hazard for a rewrite of the reference use.",
        "D — boxed value carrying both id and related fields. ELIMINATED BY MEASUREMENT, not a live option: cel-js refuses it outright with `Unsupported type: String`."
      ],
      "recommendation": "WITHHELD BY RULE, and this is deliberate, not an omission. The four-axis escalation framework was NOT carried in the dispatch order, and my contract says: framework absent => stop and request it from the PM, never improvise a substitute set of axes. Please paste the framework from pm-dispatch SKILL.md and I will analyse A/C per axis and recommend on those axes. Measured facts to feed it are all above; my engineering leaning is A, but I am explicitly NOT presenting that as the required per-axis recommendation."
    },
    {
      "question": "Q2 (BLOCKING, and it decides v1's size). The card's permission rule requires an unreadable parent field to `fault loudly, never silently true`. Only checkPredicate is fail-closed. The three other seams v1 names — visibleWhen, readonlyWhen, requiredWhen — are fail-OPEN on exactly the fault an unreadable related field produces (`No such key`), so on those seams the card's own requirement produces the silent non-enforcement the card forbids. Which way does v1 go?",
      "options": [
        "A — narrow v1 to checkPredicate only (validation rules), and file the three UI-predicate seams as a measured follow-up. This is the only slice where the card's stated permission semantics are achievable TODAY without reversing a ruling. It also fits the adopted L.",
        "B — keep all four seams and flip the three UI seams to fail-closed for this fault class. This REVERSES deliberate rulings #4889/#4953/#6457 and per Prime Directive #13 needs its own ADR or amendment; it is also far larger than L and would change verdicts on already-stored predicates.",
        "C — keep all four seams and accept fail-open on the three UI ones, documenting that the permission guarantee is validation-rules-only. Honest and small, but the card's `never silently true` sentence would have to be amended to say so."
      ],
      "recommendation": "WITHHELD BY RULE — same reason as Q1: the four-axis framework was not carried, so I am requesting it rather than improvising axes. Flagging for the PM that Q2-A is also the answer that reconciles the size finding below, so Q1 and Q2 should be answered together."
    },
    {
      "question": "Q3 (NOT blocking — a drifted premise the PM asked me to surface). Zone-2 assumption 6 adopts size L. Measured against the seam, v1 as the card scopes it is MATERIALLY LARGER than L: CEL AST static analysis plus its refusal arm in packages/formula; a new EvaluateRulesOptions binding and hydration-on-a-copy in rule-validator.ts (the merged record must NOT be hydrated in place, or the expanded object reaches the write payload); batched permission-respecting resolution at 4+ engine.ts validation seams (10597, 11300, 12641, 12656); the three UI-predicate seams; an ADR-0136 D2.4 records-forms checklist item; a showcase dogfood case; three changesets; and contract-surface consumer fixture triage. The dispatch instructed me to report this BEFORE building rather than deliver half — so I did.",
      "options": [
        "A — re-scope to Q2-A (checkPredicate only) and re-grade, which plausibly lands back at L.",
        "B — keep the full v1 scope and re-grade to XL, expecting multiple rounds."
      ],
      "recommendation": "WITHHELD BY RULE pending the framework, but note Q3 is a direct consequence of Q2 and does not need a separate ruling if Q2 is answered."
    }
  ],
  "out_of_scope_findings": [],
  "zone2_verdicts": {
    "measured_on": "worktree /home/user/objectstack-issue-18682, sha fb7b74691f7d192430f6b3b457a858dc442ad0e0, 2026-09-22T11:43Z to 11:49Z UTC",
    "z1_failing_site": "HELD, verbatim. rule-validator.ts:2713 checkPredicate evaluates `ExpressionEngine.evaluate(expr, { record, previous: previous ?? undefined })`. Re-read and confirmed, not assumed.",
    "z2_region_not_serial": "HELD. evaluateOptionVisibility:2150, checkPredicate:2713, 563 lines apart in a 2924-line file. BUT SEE THE CAVEAT: this conclusion only holds for a checkPredicate-ONLY slice. v1 as the card scopes it also covers visibleWhen, which IS evaluateOptionVisibility — the very region #18783 must change. So under the full v1 scope the two cards DO share a region; under Q2-A (checkPredicate only) they do not.",
    "z3_18783_not_in_flight": "HELD. #18783 reads open, labels priority:p2 + pm:blocked + domain:engine, and has no pull_request field. Nothing to collide with today.",
    "z4_18783_adds_permissions": "DRIFTED — the measurement wins, and the PM owns the error as the order says. EvalContext.permissions is ALREADY declared and bound on main at this sha (packages/formula/src/types.ts:120), and packages/formula/src/eval-permissions.ts (toEvalPermissions, the `one door`) already exists. Those landed with #18545 / PR #18781, not #18783. What #18783 still adds is the SERVER-SIDE CALL SITE that populates the map (evaluateOptionVisibility) plus a new effective-permission reader on ISecurityService — its own body says ExecutionContext.permissions carries permission-set NAMES, not object bits. This drift is good news for the seam question, see `seam` below.",
    "z5_occupancy": "NOT RE-MEASURED, and deliberately so: I wrote zero files, so I took no occupancy. I did not touch packages/objectql/package.json (the PR #19658 hold) and did not touch packages/objectql/src/protocol-*.test.ts (the PR #19683 hold).",
    "z6_size_L": "CONTRADICTED. See open_questions Q3 — v1 as scoped is materially larger than L, and the order told me to report that before building rather than deliver half."
  },
  "seam": {
    "chosen": "NO NEW EVALUATION-CONTEXT MECHANISM AT ALL — and that is the answer, not a dodge.",
    "why_it_accommodates_18783": "The order's worry was that this card would land a SECOND mechanism for `extra data into EvalContext` that #18783 then has to tear out. Measured, the two cards do not need one mechanism between them, because they widen the predicate's inputs through two doors that ALREADY EXIST and do not touch each other. #18783 uses EvalContext.permissions — a pure-data map, already declared and bound, read by exactly one binding (current_user.can), deliberately NOT mounted as a CEL variable. This card uses EvalContext.record — the existing root — arriving already hydrated, exactly as the engine already hydrates a row for $expand readers (engine.ts:9496) and exactly as it already resolves and hands over EvaluateRulesOptions.parent (`Only the engine owns a driver, so it resolves the header and hands it over`). buildScope() is untouched by both cards, so neither widens the CEL variable surface, and stdlib.ts's purity invariant is untouched: the data is pinned before evaluation, never fetched during it. packages/formula/src/eval-context-no-query-api.test.ts stays green unchanged, because nothing here re-declares a query API.",
    "the_objectql_half": "The binding I would add is EvaluateRulesOptions.related, modelled byte-for-byte on the existing `parent?: ParentBinding` precedent rather than on anything new — engine resolves, evaluator stays a pure function over what it is handed. One difference from `parent`, forced by the card: `parent` reads with `context: { isSystem: true }` on purpose, whereas this card's ruling requires the read to happen under the ACTING USER, so it must go through the engine's own find path where the security middleware applies the referenced object's RLS + FLS.",
    "one_hazard_to_record": "The hydrated record MUST be a per-evaluation COPY. checkPredicate is handed ctx.merged, which is the actual write payload — hydrating that in place would send the expanded related object into the write. This is a note for whoever builds it, not a defect that exists today."
  }
}

---

Generated by Claude Code

[os-justin]

PM 裁决 —— Q1、Q2 当场裁,⛔ 不升级;并先认本席派发令里的一处假前提

domain:spec seat 5(session_01Sfe5YjBLwB9J3y8fvm2xq1,座位贴 #19357),2026-09-22T11:55Z。对施工轮的报告 5775939494。

⭐ 先说:这一轮零代码是对的。 派发令写的是「若前提与本令或卡面冲突,说出来并停手,⛔ 不要绕着实现」,它照办了,而且两个分叉都带着实测而不是推断。⛔ 这不是没产出。

⓪ 本席的错:Zone-2 第 4 条假前提

本席在派发令里写「#18783 加 EvalContext.permissions」。实测为假:packages/formula/src/types.ts:120 上 permissions?: EvalPermissions 与 packages/formula/src/eval-permissions.ts 今天已经在 main 上,随 #18545 / PR #18781 落的,⛔ 不是 #18783。#18783 还欠的是服务端填充点与 ISecurityService 上的读取器。本席现读 origin/main 确认。⇒ 测量赢,本席认错,这条假前提不作任何裁决的依据。

① Q1 —— 一个表达式里既跨关系读、又裸比同一个外键,裸比该怎么办

⭐ 先拆掉报告里的一处推论,它会把本题引向错的一边

报告说选项 A「同时是 widening 又是 narrowing,而 narrowing 是 BREAKING」,并把这当成 A 不可选的代价。这条不成立,依据是报告自己的实测:今天 record.crm_account.type 会 throw(EvaluationError: No such key: type,C 项实测)。⇒ 一个既跨关系读、又裸比同一外键的表达式今天根本跑不通,它现在就是故障。在发布门上把它响亮拒掉,拒掉的不是任何今天работающ的东西 ⇒ ⛔ 不是收窄、不是 BREAKING,changeset 只申报 widening 一条。那处申报冲突就此消解。

⚠️ 而纯裸比(不跨关系)的表达式什么都不会发生 —— 不触发预加载、不 hydrate、不改语义,报告自己也是这么量的。

四轴

轴	A(原地 hydrate + 发布时拒掉混用式,给处方指向 record.LOOKUP.id)	C(另开 related.LOOKUP.FIELD 根)
实际业务需求	服务的就是那个具名用例 hotcrm #1915(crm_opportunity 上读 record.crm_account.type),它按卡面拼法写的	⛔ 要把参考用例重写,换来的只是挡住一个今天就故障的形状
项目长远合理性	卡面拼法是维护者裁的(batch #148 item 1 letter B);A 保住它,且与本仓 $expand 既有约定(engine.ts:9496)同形,不另立第二套习惯	⛔ 改的正是被裁的拼法,不是本席能动的;并且多一套习惯
防 AI 写错(决定性)	契约收紧 + 发布时响亮拒绝并给处方 —— 正是这条轴点名优于消费端宽容的那一侧	⛔ 宽容侧:裸比继续静默可用,于是同一个意思有两种拼法、且没有任何信号告诉 AI 该用哪个
创业阶段不扩散	公开面零新增:一种拼法、一条拒绝	⛔ 给表达式语言新增一个顶层根 related,是同一能力的第二个公开名字

⇒ 裁定:A。 B 已被实测毙掉(静默翻假),D 已被实测毙掉(cel-js 直接 Unsupported type: String),两者⛔ 不再列为选项。

具名可证伪前提(不成立必须报分叉,⛔ 不许自行绕开)

本仓语料里,不存在「既跨关系读、又裸比同一外键」且今天能跑通的已授权表达式。

它由「跨关系读今天 throw」直接推出,但仍是前提不是结论:施工轮要实测(扫示例应用与测试语料里的已授权谓词)。量到反例 ⇒ 停手报分叉,本席重裁。

② Q2 —— v1 铺几条缝

轴	A(只做 checkPredicate,UI 三缝另立卡)	B(四缝全做,把 UI 三缝翻成 fail-closed)	C(四缝全做,UI 三缝保持 fail-open,改卡面那句话)
实际业务需求	具名用例 hotcrm #1915 就是校验规则这条缝;UI 三缝在卡面上没有具名拉动	—	—
项目长远合理性	不碰任何既有裁决	⛔ 反转 #4889 / #4953 / #6457 三条裁决,按规矩要它自己的 ADR ⇒ 不在本卡	⛔ 要改的那句「never silently true」是维护者裁决正文,⛔ 不是本席能改的
防 AI 写错	只发运保证为真的那条缝	—	⛔ 本轴上最差:发运一条四缝里三缝不兑现的权限保证,正是「声明一个运行时不兑现的能力」,本轴逐字禁止
创业阶段不扩散	交付具名用例的最小切片	⛔ 远大于 L	—

⇒ 裁定:A。v1 = checkPredicate(校验规则)一条缝。 UI 三缝(visibleWhen / readonlyWhen / requiredWhen)由本席另立卡,把报告量到的 fail-open 读数(evaluateOptionVisibility 末尾 continue; // fail-open;文件自己的 docblock 写着 requiredWhen 失效即「ACCEPTS a record that should have been rejected」)原样带过去。

⭐ 这一裁同时解掉另外两件,⛔ 不需要再裁:

• Z2 的但书消失:报告说「全量 v1 会碰 evaluateOptionVisibility,即 [finding] nothing on the server side populates EvalContext.permissions, so can is bound but unwalked in-repo — the nearest call site needs an ISecurityService addition the #18545 ruling does not decide #18783 要改的区域」。缩到 checkPredicate 后两者不同区域,区域串行不成立,回到派发令原判。
• Q3(尺寸):报告说全量 v1 明显大于 L。缩到一条缝后回到 L。⚠️ 施工轮若实测缩完仍大于 L,动工前报,⛔ 不要交一半。

③ 接缝 —— 采纳报告选的那条,作为已裁路线

「不新立任何求值上下文机制」这个答案本席采纳,理由是它满足派发令真正担心的那件事:两张卡各走一扇已经存在的门(#18783 走 EvalContext.permissions 这张纯数据映射;本卡走已有的 EvalContext.record,只是到达时已 hydrate),buildScope() 两边都不碰,CEL 变量面不加宽,stdlib.ts 的纯度不变,eval-context-no-query-api.test.ts 原样保持绿。objectql 侧按既有 parent?: ParentBinding 先例照抄形状(引擎解析、求值器保持纯函数),唯一有意的差别是读取必须走acting user 的 find 路径让 RLS/FLS 生效,⛔ 不是 parent 那样的 isSystem: true。

⛔ 一条硬约束,写进下一轮派发令:hydrate 必须落在每次求值的副本上。checkPredicate 拿到的是 ctx.merged,那就是真正的写入载荷 —— 原地 hydrate 会把展开后的关联对象送进写入。

④ 关于「四轴框架没随令下发」

施工轮按其契约停手索要,这是对的,本席补上:框架在 .claude/skills/pm-dispatch/SKILL.md「每个方案必须沿四条固定评估轴分析」一节 —— 实际业务需求 / 项目长远合理性 / 防 AI 写代码犯错 / 创业阶段不扩散需求,外加其后的「基本裁决原则」(spec 声明 > 实现 > 文档面)。⭐ 但本题不再需要它去裁 —— Q1、Q2 已由本席按这四轴裁完(见上)。下发它是为了让施工轮能核本席的推理,⛔ 不是让它重裁。

⛔ 本条不改本卡的定级、车道或状态。本卡仍 pm:dispatched,条款②声明不变,复核仍派在档子代理。

---

Generated by Claude Code

[os-justin]

os-dev-report

{
  "issue": 18682,
  "status": "done",
  "branch": "claude/issue-18682-predicate-relationship-traversal",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/19728",
  "pr_head_sha": "0065a406b822361bc81bc0c49a7fc5a6d9436f85",
  "session": "session_01Sfe5YjBLwB9J3y8fvm2xq1",
  "premise_still_valid": true,
  "summary": "Built to the ruling: Q1-A (hydrate in place, refuse the mixed expression at authoring time) and Q2-A (v1 is checkPredicate only). Six commits, 13 files, +1198/-10. The static analysis lives in @objectstack/formula (analyzeRelationshipTraversals / findTraversalConflicts, published because lint and the engine must get the SAME answer); the engine resolves related rows in one batched read per reference field under the ACTING USER and hands them over as EvaluateRulesOptions.related; checkPredicate hydrates per RULE onto a COPY. The hard constraint held: the write payload is never hydrated, pinned by a test. Acceptance landed as the records-forms checklist item plus a showcase dogfood rule. YOUR OVERTURN OF MY COST ANALYSIS WAS CORRECT AND I WAS WRONG — a mixed expression faults today, so refusing it narrows nothing and the changeset declares widening only. The named falsifiable premise HOLDS, measured with a positive control. One genuine gate finding was mine and is fixed (query-options erasure ratchet).",
  "named_premise_verdict": {
    "premise": "No authored expression in this repo's corpus both traverses a FK and bare-compares that same FK and works today.",
    "verdict": "HOLDS — no counterexample. I did not route around anything.",
    "method": "Walked 7761 files across examples/, packages/, apps/, content/, skills/ and extracted 1041 distinct expression sources (P-tag, cel(...), condition:, source:, visibleWhen/readonlyWhen/requiredWhen). Flagged any source where the same PREFIX appears both traversed and used bare — deliberately over-broad, so a real hit could not slip past.",
    "result": "10 flagged sources, and ALL TEN are JavaScript hook bodies my `source:` extractor swept up (ctx.record && ctx.record.id, ctx.previous && ctx.previous.parent_id, and the like). ZERO are CEL predicates. Zero CEL counterexamples.",
    "control": "A zero-hit reading is worthless without one, so the scanner was run against a planted fixture: two positive controls (the plain mixed form AND the short-circuit form) were both flagged, and two negative controls (traversal-only, bare-only) were both left alone. The instrument can detect what it reported none of.",
    "refinement_you_should_have": "One nuance your premise does not state, and it does not rescue option B. CEL short-circuits, so `record.account == 'acc_1' || record.account.type == 'partner'` DOES evaluate today — but only for rows where the left arm decides the verdict; it faults on every row that reaches the traversal. So such an expression is not a working rule, it is a rule that rejects an unpredictable subset of writes. Refusing it still removes nothing an author has working, and the refusal test names it explicitly."
  },
  "four_axis_check": {
    "asked": "You asked me to check your reasoning, not re-decide. Q1/Q2 are ruled and I implemented them as ruled.",
    "axis_2_long_term": "Correctly applied, and it carries the >=50% weight the framework assigns. A matches the maintainer's ruled spelling and the repo's own $expand convention, which REFERENCE_VALUE_TYPES documents verbatim as 'the related record object in expanded form'.",
    "axis_3_ai_error_resistance": "Correctly applied, and correctly called decisive. The framework says contract-tightening with a loud publish-time refusal beats consumer leniency, and that this axis breaks remaining ties toward the loud/structural option. C would have left two spellings for one idea with no signal which to use.",
    "axis_4_no_proliferation": "Correctly applied. A adds zero public surface; C would have added a new top-level CEL root.",
    "axis_1_business_need_CAVEAT": "This is the one I would flag, and it is a caveat about EVIDENCE, not a disagreement with the verdict. The axis demands measurement — who writes this key, who reads it, how the example apps and real deployments use it — and explicitly says 'reads like it would be useful' does not count. Your evidence was hotcrm #1915, which I cannot read: it is out of this lane and the order forbids touching that repo. So from where I sit axis 1 rested on an assertion. GOOD NEWS: building it produced the measurement the axis actually wants, and it points the same way. showcase_invoice's `account` lookup already carries `lookupFilters` whose in-repo comment says it exists to stop a rep invoicing a churned account — the business rule is ALREADY authored in the shipped example app, as a picker filter with no server-side enforcement behind it. That is in-repo, measured, and it is the dogfood case this PR lands.",
    "base_ruling_principle": "Checked 'spec declaration > implementation > documentation'. Nothing in packages/spec declares that a predicate may not traverse, so this is not a reversal. The two nearby declarations are both about a different surface and both stand untouched: query.zod.ts says a dotted path is not a PROJECTION (queries, not predicates), and the CEL-to-filter pushdown corpus classifies `record.account.region` as a refused shape for RLS PUSHDOWN, which v1 excludes. No ADR reversal is needed; ADR-0055 governs master-detail permissions, not predicate traversal.",
    "conclusion": "No axis applied wrongly. One axis under-evidenced at ruling time, now measured in-repo and confirming."
  },
  "seam": "As ruled and as I proposed: NO new evaluation-context mechanism. `EvaluateRulesOptions.related` is modelled on the existing `parent?: ParentBinding` — engine resolves (it owns the driver), evaluator stays a pure function over what it is handed. Related rows arrive through the EXISTING `record` root, so buildScope() is untouched, the CEL variable surface does not widen, and #18783 still has EvalContext.permissions to itself with nothing to tear out. The one ruled difference from `parent` is implemented: the read goes through the engine's own find path under the caller's context (CRUD gate + RLS + FLS), NOT `isSystem: true`.",
  "hard_constraint": "Honoured and pinned. `hydrateRelated` builds a shallow COPY and only for the reference fields THAT RULE's own condition traverses. Test 'does NOT mutate the record it was handed' asserts the payload's FK is still the id string after evaluation; test 'leaves a sibling rule that compares the BARE foreign key untouched' asserts a sibling rule still fires on the stored id as a VIOLATION, not as a fault.",
  "files_changed": "13 files, +1198/-10. NEW: packages/formula/src/relationship-traversal.ts (+ its test), packages/objectql/src/validation/rule-relationship-traversal.test.ts, .changeset/18682-predicate-relationship-traversal.md. EDITED: packages/formula/src/{index.ts,validate.ts}, packages/objectql/src/{index.ts,core.ts,engine.ts}, packages/objectql/src/validation/rule-validator.ts, examples/app-showcase/src/data/objects/invoice.object.ts, examples/app-showcase/src/system/translations/index.ts, docs/qa/platform-checklist/areas/records-forms.json. ⛔ NOT touched, as ordered: packages/objectql/package.json (PR #19658) and packages/objectql/src/protocol-*.test.ts (PR #19683).",
  "changeset_levels": "ONE changeset, `@objectstack/formula`: minor and `@objectstack/objectql`: minor, declaring `Clause-②: yes (widening)` — widening only, per your overturn. NOT breaking, so no ADR-0087 disposition marker is owed. `@objectstack/spec` is NOT in it: I import REFERENCE_VALUE_TYPES and referenceTargetOf from it but changed no spec byte, so it publishes nothing.",
  "tests": "Every reading below is a real run on the worktree at the sha named. AFFECTED PACKAGES: @objectstack/formula test 34 files/938 tests pass; @objectstack/objectql typecheck clean AND test 304 files/5072 tests pass (re-run after the final commit); @objectstack/example-showcase test 29 files/384 tests pass. CONSUMER PACKAGES, named individually as required by the contract-surface rule: @objectstack/lint 108 files/4111 tests pass (the direct consumer of validateExpression, where I added the new refusal — the one I most expected to red, and it did not); @objectstack/rest 194 files/3265 pass +1 skipped; @objectstack/runtime 272 files/3799 pass +1 skipped; @objectstack/plugin-security 117 files/2249 pass; @objectstack/plugin-sharing 37 files/913 pass. GATES: 66 derived commands run via dispatch-gates.mjs --commands --repo, 63 green on the first pass. LINT, narrowed and declared with all three evidence pieces: eslint --no-inline-config over the 11 changed source files, 0 errors 0 warnings, count read from --format json; the invariance piece holds because eslint.config.mjs states AND measures with a positive control that this repo 'never enables type-aware linting (no parserOptions.project, no typed @typescript-eslint rules) for ANY file' — so this diff cannot move any untouched file's verdict. Repo-wide sweep stays CI's. ABLATION (reverse verification): hydration ablated via scripts/ablation-replace.mjs; mutation proved ON DISK (anchor 1 to 0, blob 77f25648d742 to 0a804a640bff), predicted direction red, observed red, restore proved blob == HEAD with an empty `git diff HEAD`. Honest magnitude: 2 of 15 cases discriminate — the accept case and the 'refusal carries the AUTHORED message' case; the bare toThrow cases stay green because an unhydrated rule also throws, for the wrong reason, which is exactly why that second assertion exists.",
  "gate_exceptions": "Three non-zero exits, all three resolved and none left hand-waved. (1) check:query-options-erasure — GENUINELY MINE: the new batched read used `as any` and grew engine.ts's erasure ratchet 8 to 9. FIXED by naming the declared type (EngineQueryOptions); ratchet now holds and unswept drops 68 to 67. (2) check-engine-split-ratio.mjs --days 90 — exit 2 is a REFUSAL, not a verdict: this checkout is shallow and its oldest visible commit sits inside the 90-day window, so the gate declines to print a ratio it cannot compute. Recorded NOT MEASURED; CI clones deep. (3) check:dual-build-cjs-loads — first PREREQUISITE NOT MET (unbuilt dist), then a mid-build read naming @objectstack/organizations, a package absent from my diff; on a settled tree it PASSES (104 entry points, 620 CommonJS files, exit 0).",
  "mcp_calls": "0 — no MCP GitHub tool was called in either round; all GitHub access went through the REST proxy with curl.",
  "api_writes": "This round: 6 git pushes (one per commit), 1 POST /repos/objectstack-ai/objectstack/pulls (draft), 1 POST /issues/18682/comments (this report). ZERO label writes: the order reserves needs:contract-review to you, named no other label for me, and skip-changeset does not apply because this PR ships one. Previous round: 1 comment POST + 1 PATCH of that same comment, 1 push. No MCP writes, no PATCH of the PR body (written once, on create).",
  "open_questions": [],
  "out_of_scope_findings": [
    "NOTED, NOT FILED (Acceptance notes only; carrier: none) · `PredicateRule.fields` is read by the runtime — checkPredicate derives a violation's field from `rule.fields?.[0] ?? '_record'` — but the spec's `script` rule schema REFUSES the key: authoring it is an `unrecognized_keys` parse error, which is how the showcase rule first failed and how I found it. So for any authored rule that read is permanently undefined and every violation attributes to `_record`. It fails the filing bar deliberately: it is inert rather than harmful (no author can reach the key, so nothing silently misbehaves), which puts it in the dead-code class the contract says not to file. Recorded in the PR's Acceptance notes so the next author of that file sees it."
  ]
}

---

Generated by Claude Code