hook sandbox: a metadata-only hook body cannot read ctx.provenance (flowRunId), so a guard that tells a flow write from a user's own write must ship bundled (hotcrm#2285)

维护者速读

事由： 引擎会在 flow 数据节点的写入上盖 HookContext.provenance.flowRunId，REST 写入没有这个标记。但沙箱里的 hook body 读不到 ctx.provenance，所以只要守卫需要分辨「这次写入来自 flow 还是用户自己」，就只能打包发布（bundled），过不了 lint --strict。
要做： buildSandboxContext 把 ctx.provenance（至少 flowRunId）传进沙箱，做法同现有的 referential markers；CLI 降低器 extract-hook-body 认这个键；在 hook body 契约文档里写明。
完成标准： 读 ctx.provenance.flowRunId 的 hook 能降低成纯元数据 body；lint --strict 不再报 hook-body/bundled-fallback；在沙箱里 flow 写入能读到这个值，REST 写入读不到。

Filing gate ③ a task the maintainer set: ruling A on hotcrm#2285 (6407529478, batch #15 item 1, the maintainer's 「A」 of 2026-10-26T03:24:52Z), which orders the platform first. Filed by the repo:hotcrm seat 1 (os-elon-musk, session session_014xanhPEmGTMTfVH4UokwJT). ⛔ Not a claim. The grade and routing belong to platform triage. The seat suggests priority:p3, the downstream card's grade.

The consumer, measured on `@objectstack/*` 18.1.0

HotCRM's ruling says an account created by lead conversion skips account_approval, and a hand-created account still goes through it. The conversion flow runs runAs: 'user', so a rep can write through REST any field that create_account can write. The only mark that tells the two writes apart is server-stamped: HookContext.provenance.flowRunId.

The guard on hotcrm branch claude/project-thread-5o1adp @ 2002ca5 uses it. Booted in-process, 21 of 21 tests pass:

the rep's Convert Lead creates the account with the marker and no approval request;
a hand-made account is still pending;
a REST create or PATCH that carries the marker is refused with 400.

Report: hotcrm#2285 comment 6398882683.

What fails is lowering. os lint --strict says: hook 'account_protection' is bundled, not shipped as a metadata-only body: ctx.provenance is not reachable from a sandboxed body (hook-body/bundled-fallback).

@objectstack/cli extract-hook-body.js notes "A body has no equivalent today".
buildSandboxContext (@objectstack/runtime) copies input, previous, user, session, event, object, result, api, dispatch and the referential markers. It copies no provenance.
session carries no flowRunId either.

What to do

Runtime: buildSandboxContext passes a read-only provenance into the VM, with at least flowRunId, plus whatever else the engine stamps that is safe to expose. A REST write sees provenance absent or with no flowRunId.
CLI: extract-hook-body accepts ctx.provenance reads and lowers them instead of falling back to bundled.
Contract: the hook-body context reference says what provenance carries, and that a value set by a flow node cannot be forged through the data API.
Tests: the same body runs in the sandbox and reads flowRunId on a flow write and none on a REST write.

Security: a runAs system hook or an action script body reaches the four identity-assignment objects past the delegated-administration gate (the #25251 refusal requires flowRunId) #25653: the identity-assignment gate already relies on flowRunId in-process. This card makes the same mark readable from a sandboxed body; it does not change that gate.
Downstream: hotcrm#2285 takes Blocked-by: this card and resumes after the first installable release that carries it.

Dedupe

Method: every objectstack-ai/objectstack issue updated since 2026-10-10 (any state), listed with the repo-scoped issues endpoint and matched case-insensitively on provenance, flowRunId, sandbox … context and hook body … ctx, at 2026-10-26T03:35Z. 1 hit: #25653, a security gate that uses flowRunId in-process, which is not this. New.

Generated by Claude Code

Triage: first grade — `enhancement` · `priority:p2` (not p3) · `domain:server` · `area:automation` · `pm:queue` · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-26T03:53Z

⛔ Not a claim, ⛔ not a dispatch.

p2, not the suggested p3: the maintainer ruled "platform first" on hotcrm#2285 (A, 03:24Z), so [Decision] Lead conversion: should the account it creates go through account approval, and where should the rep land afterwards hotcrm#2285 is Blocked-by this card and the app guard waits on it. That is a ruled app feature held by a platform gap. It is not a release item, so it is not p1.
Not a spec-key addition: the sandbox context, the lowerer and the contract note are all on the server side. A read-only ctx.provenance (at least flowRunId) mirrors the existing referential markers. Keep it read-only in the sandbox, so a body cannot forge the mark.

Generated by Claude Code

Claim: PM loop round 1 · card thread · 2026-10-26T04:13Z
Session: session_0144xurUaQ5v2UtFYLpYp28J (the card thread, mode:thread; the seat writes this claim for it: seat session session_01TFnDdepdwyDJeM2kJ4GtMy)
Account: os-elon-musk (the seat's linked user as GET /user answers it; the card's assignee)
Branch: claude/project-thread-23dgf0 (platform-assigned to the card thread; a thread can push only its assigned branch, a measured platform exception to claude/issue-<n>-<slug>)
Worktree: objectstack-issue-25905
Domain: domain:server
Seat: domain:server#2 (seat post #20966; 由 os-elon-musk 账户的项目负责)
File surface (read on origin/main f00e8d5c; stop on a breach and explain it in the report): packages/runtime/src/sandbox/body-runner.ts, the hook face's buildSandboxContext only (a read-only provenance carrying at least flowRunId, absent or empty on a REST write); packages/cli/src/utils/extract-hook-body.ts (lower ctx.provenance reads instead of the bundled fallback); the hook-body context reference under content/docs/**; tests in both packages (the same body reads flowRunId on a flow write and none on a REST write; lint --strict no longer reports hook-body/bundled-fallback for it); one changeset. ⛔ No packages/spec/**: HookContext.provenance is already declared in packages/spec/src/data/hook.zod.ts, so this honours a declared key in the sandbox; if the change needs a spec edit (docblock included), stop and report, because it would then owe a contract-tier review.
Container & model: M, mode:thread, model: default tier (dispatch-gates --tier on this surface: "no path-derived mandate"), effort: high
Clause-②: no
Metadata-protocol: none
Basis for the Clause-② line: the sandbox starts carrying a key the published HookContext schema already declares (provenance, flowRunId); pulling back a declared contract is not Clause-②. Re-read against AGENTS.md on the measured diff; if the dev reads the lowerer's new accept as a widening arm, it says so in the report and the seat re-judges.
Responsibility: packages/runtime (buildSandboxContext) and packages/cli (extract-hook-body) produce the gap | no platform path covers it: a metadata-only body cannot read the mark, so the guard must ship bundled | reached by hotcrm#2285's account-approval guard today (measured on 18.1.0, per the card)
Thread-read: 6407839297
Premise: holds (grep -n provenance packages/spec/src/data/hook.zod.ts on f00e8d5c: the key is declared at ~:1156–:1173; the card reads buildSandboxContext copying no provenance)
Serial constraints cleared: seat 1's #25653 (claim 6407781630) edits body-runner.ts's action face, objectql's withRunAs and plugin-security's predicate. This card stays on the hook face's buildSandboxContext. Same file, different function: whichever lands second merges main. No open PR names extract-hook-body.ts.
Writes: PR only through the relay pr_create; comments, labels and bodies only through the relay write tools (post-stamped.mjs, label-write.mjs, fleet-write/dispatch.mjs). ⛔ No GitHub MCP write tool. Report both counts (writes, mcp_calls).
Resume-from: none

Generated by Claude Code

Claim amendment (file surface) · domain:server#2 · seat session session_01TFnDdepdwyDJeM2kJ4GtMy · 2026-10-26T04:15Z · amends claim 6408069263, same session, same branch claude/project-thread-23dgf0.

File surface adds, all in the sandbox path the claim already names. ⛔ Still no packages/spec/**.

packages/runtime/src/sandbox/quickjs-runner.ts: installCtx, hook face only. provenance is installed as a frozen graft, the way dispatch and the referential markers reach a body.
packages/runtime/src/sandbox/script-runner.ts: the ScriptContext type gains the provenance field.
packages/cli/test/lowered-body-face-enumeration.test.ts and packages/cli/test/hook-body-parameter-rebind.test.ts: their pins move provenance from refused to carried.

Members: the three that HookContext.provenance declares (flowRunId, attributedUserId, performedByClientId). Each is copied only as a string and is absent otherwise. In-process hooks already read the same declared members. Every other line of the claim stands.

Generated by Claude Code

os-dev-report

{
  "issue": 25905,
  "status": "done",
  "branch": "claude/project-thread-23dgf0",
  "pr": "https://github.com/objectstack-ai/objectstack/pull/25952",
  "session": "session_0144xurUaQ5v2UtFYLpYp28J",
  "premise_still_valid": true,
  "summary": "The hook face's buildSandboxContext now projects the declared HookContext.provenance (flowRunId, attributedUserId, performedByClientId; each copied only as a string, the whole key absent when none survives) and installCtx grafts it frozen and non-writable like ctx.dispatch. extract-hook-body no longer refuses ctx.provenance, so a guard on ctx.provenance?.flowRunId lowers to a metadata-only body and os lint reports no hook-body/bundled-fallback for it. The docs page content/docs/automation/hook-bodies.mdx gains a Write provenance section. No packages/spec edit. The file surface grew by quickjs-runner.ts (installCtx), script-runner.ts (ScriptContext type) and the CLI pins, per claim amendment 6408086185.",
  "tests": "head df1c7164. New runtime pin src/sandbox/hook-provenance-signal.integration.test.ts (real ObjectQL + SqlDriver + QuickJS): the flow-shaped write reads flowRunId run_25905 after drift attempts; the REST write reads typeof undefined; the forged payload field provenance surfaces only on ctx.input. Ablation 1, buildSandboxContext falls back to JSON.parse(input.provenance): red at :165 (expected 'object' to be 'undefined'), blob 58df4905a51e to 81882a7eb7e0, restored to 58df4905a51e with an empty git diff HEAD. Ablation 2, freeze removed in the graft: red at :139 (expected 'replaced' to be 'run_25905'), blob 04f49a96f07d to 7c20c0ada09a, restored. Both import src relatively, so no dist was involved. runtime full vitest: Test Files 449 passed (449), Tests 8015 passed, 19 skipped. cli --project unit: 330/332 on the first run; published-subpath-console.pin and published-subpath-hook-body.pin threw 'packages/cli is not built' and passed (29 tests) after the CLI build. The integration tier is declared to CI.",
  "gates": "Each exit was captured before any pipe. typecheck (runtime and cli): exit 0. pnpm lint: exit 0. dispatch-gates --commands gave 98 families: 95 exit 0; check:i18n, check:i18n-coverage and check:i18n-walk-parity exited 3 (CLI dist absent) and exit 0 after the CLI build. NOT MEASURED, exit 3 prerequisite: check:dual-build-cjs-loads (unbuilt plugin dists), spec check:skill-examples (client-react dist absent), check-plugin-teardown-shape --self-test (shallow clone). --ran: 98 derived, 98 run, 0 unrun. PR check-runs: in_progress at report time.",
  "dogfood_battery": "n/a — no ! in the PR title and no (narrowing) arm",
  "mcp_calls": "3 — mcp__github__issue_read (get, get_comments x2); no GitHub MCP write",
  "api_writes": "2 relay strokes — fleet-write pr_create (POST /pulls + POST /issues/25952/assignees), and this os-dev-report comment via post-stamped",
  "open_questions": [
    {
      "question": "The claim says Clause-②: no. The lowerer's accept set does widen: a handler that used to fall back to bundling now lowers, and the body face gains a readable key. Is that a (widening) arm?",
      "options": [
        "A keep no: it honours a key HookContextSchema already declares; nothing new is authorable",
        "B yes (widening)"
      ],
      "recommendation": "A, because the published contract (HookContextSchema.provenance) is unchanged and the body face is pulled into line with it; but the seat re-judges per the claim's own note"
    }
  ],
  "out_of_scope_findings": [
    "carrier: none · noted, not filed: a body can still define ctx.provenance itself on a write that carries none (the key is absent, same as ctx.dispatch). It stays inside that VM, so it is in the PR's Acceptance notes only"
  ]
}

Generated by Claude Code

Claim amendment (Clause-② line) · domain:server#2 · seat session session_01TFnDdepdwyDJeM2kJ4GtMy · 2026-10-26T05:35Z · amends claim 6408069263 (and amendment 6408086185), same session, same branch claude/project-thread-23dgf0. Answers open_questions[0] of the os-dev-report 6408739804: B.

Clause-②: yes (widening) replaces Clause-②: no for @objectstack/runtime. PR #25952 adds the optional member provenance? to ScriptContext, which the runtime barrel exports, and objectstack build now lowers a handler it used to bundle. packages/spec is still untouched: the member mirrors the already-published HookContextSchema.provenance. The level stays patch under Metadata-protocol: none (ruling A on #25105). @objectstack/cli keeps Clause-②: no unless its built declarations moved. The declaration face owes a TIER_DEFAULT record, which this seat writes on the new head. Every other line of the claim stands.

Generated by Claude Code

ACCEPT → PR #25952 comment 6409416101 · domain:server#2 · 2026-10-26T06:07Z · declaration-face record PASS 6409406460 · landing through the relay (standing landing word, seat thread 2026-10-26 05:53Z)

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hook sandbox: a metadata-only hook body cannot read ctx.provenance (flowRunId), so a guard that tells a flow write from a user's own write must ship bundled (hotcrm#2285) #25905

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The consumer, measured on `@objectstack/*` 18.1.0

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Triage: first grade — `enhancement` · `priority:p2` (not p3) · `domain:server` · `area:automation` · `pm:queue` · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-26T03:53Z

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hook sandbox: a metadata-only hook body cannot read ctx.provenance (flowRunId), so a guard that tells a flow write from a user's own write must ship bundled (hotcrm#2285) #25905

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The consumer, measured on @objectstack/* 18.1.0

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objectstack-fleet commented on Oct 26, 2026

Triage: first grade — enhancement · priority:p2 (not p3) · domain:server · area:automation · pm:queue · triage seat · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-26T03:53Z

objectstack-fleet commented on Oct 26, 2026

objectstack-fleet commented on Oct 26, 2026

objectstack-fleet commented on Oct 26, 2026

objectstack-fleet commented on Oct 26, 2026

objectstack-fleet commented on Oct 26, 2026

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The consumer, measured on `@objectstack/*` 18.1.0

Triage: first grade — `enhancement` · `priority:p2` (not p3) · `domain:server` · `area:automation` · `pm:queue` · triage seat · `session_01AavokzJ5DndAwitDXvKy4U` · 2026-10-26T03:53Z