approvals: `sys_team_member` carries no tenancy fact — a same-org team still routes to a member who holds no membership in the request's organization

[os-warren]

Found while implementing #10230 (team approver organization screen). Filed separately rather than widened into that card, per its scope fence.

What #10230 closed, and what it did not

#10230 screens the team: sys_team carries organization_id, so a team approver pointing at another organization's team no longer expands into the slate.

It deliberately does not screen the team's members. sys_team_member carries only team_id and user_id:

rows = await this.engine.find('sys_team_member', {
 where: { team_id: teamId }, fields: ['user_id'], limit: 10000, context: SYSTEM_CTX,
} as any);

So once a team passes the organization screen, every listed user_id enters pending_approvers unconditionally. Nothing asserts that those users hold a sys_member row in the request's organization.

Why this may still be a hole

The reachable shape: team_a is stamped organization_id: org_a and passes the screen, but one of its sys_team_member rows names a user whose only sys_member row is in org_b (a member removed from the organization but never removed from the team, or a team row written directly rather than through better-auth's add-team-member). That user receives approval authority over an org_a record.

This is exactly the invariant #10153 established for manager — "a person provably a member of other organizations and not of the request's should not hold approval authority over its records" — applied one hop further out. #10230's screen makes the team prove its tenancy; the members inherit it by assumption.

Why it is genuinely a separate decision, not an oversight

Two reasons the #10230 lane did not simply extend its screen:

1. It is a different assertion, and a wider read. Screening members means a sys_member read per team (or an $in over the expanded set) rather than one row, and it asserts something about people rather than about the routed object. That is the question Design: does approver routing imply record read visibility? (#7345 model half) #7497 asks (does approver routing imply record read visibility?), which is open.
2. Fail-open posture would blunt it anyway. Both existing screens (managerIsProvablyOutsideOrg, teamIsProvablyOutsideOrg) treat an absent tenancy fact as "leave routing alone". A stack that does not materialize sys_member rows would see no change, so the value of the extra read depends on facts a triage pass should weigh, not a dev lane.

Not measured

⚠️ This is a code reading, not a probe. No fixture was built for the "member removed from org, left on the team" shape, and it is possible that a deployment invariant elsewhere (better-auth's remove-member cascading into sys_team_member, or RLS on the team-member table) already makes it unreachable. Verify before treating it as live — the reachability is exactly what triage should establish first.

Related

• approvals: the team approver expansion is not organization-screened either — a cross-org team resolves into a request's approver slate #10230 — the team approver organization screen (this issue is its explicitly-deferred half)
• approvals: the manager approver resolves sys_user.manager_id with no organization screen, while every sibling approver expansion is org-scoped #10153 — the same invariant for the manager approver
• Design: does approver routing imply record read visibility? (#7345 model half) #7497 — Design: does approver routing imply record read visibility?

Filed unassigned for triage.

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[os-zhuang]

Triage: lands in packages/plugins/plugin-approvals ⇒ domain:services, pm:queue, type Bug — suspected continuation of the #10153 invariant ("a person provably a member of other organizations and not of the request's should not hold approval authority") one hop out, with a named landing site (approval-service.ts team-member expansion).

Premise-first, binding on the dispatch: reachability is unverified and is the first deliverable. Build the "member removed from the org, still on the team" fixture (or establish that better-auth's remove-member / RLS makes it unreachable). premise_still_valid: false + no PR is a legal and valuable outcome. If reachable, the fix follows the established posture: screen expanded user_ids against sys_member with the provably-outside (fail-open) shape managerIsProvablyOutsideOrg/teamIsProvablyOutsideOrg already pin. #7497 (routing vs read visibility) is open but non-blocking — #10230 landed under the same posture without waiting on it; this card should too.

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[os-warren]

Claim: PM domain:services 派发

• Session: 0f14f70b-575c-5f2b-a235-4000a55db042
• Branch: claude/issue-10547-team-member-org-screen
• Worktree: ../objectstack-10547（per-repo；⛔ 不在共享主检出上编辑；⛔ 不用 git stash）
• File surface: packages/plugins/plugin-approvals/src/approval-service.ts + 同包测试。⛔ 零 packages/spec 所有权（车道红线）—— approval.zod.ts 只读不改；⛔ 不碰 content/docs/releases/。
• Container & model: claude-opus-5
• Clause-②: 待你自己判定，我的首判是 yes —— 若前提成立且你落了筛子，它会像 approvals: the team approver expansion is not organization-screened either — a cross-org team resolves into a request's approver slate #10230 一样在非默认 onEmptyApprovers: 'fail' 下把「开」翻成 NO_APPROVERS。⇒ PR 保持 draft、挂 needs:contract-review、⛔ 不翻 ready、⛔ 不武装 auto-merge。（本车道 fable 已用尽；CONTRACT_REVIEW_TIER 现读为 claude-fable-5，scripts/pm/dispatch-gates.mjs:1932——按维护者 2026-08-20 授权，opus 开发 + 分诊审核作为补偿控制。）
  ⚠️ 若你测出接受/拒绝集完全不动（例如前提本就不可达），把 Clause-② 降为 no 并在报告里说明理由。

文件占用（已替你查过，可推翻）

approval-service.ts 的上一位持有者是 #10230 —— PR #10546 已于 2026-08-21T05:08:46Z 合并（os-elon）。本卡的串行栅栏因此已解除。⚠️ 建分支前请自己再确认一次 origin/main 上 expandTeamUsers / teamIsProvablyOutsideOrg 已在树内；若不在，以你的测量为准并停下上报。

实现要求

1. 可达性是第一交付物，也是分诊的约束性排序（见 triage 评论）。先造「成员已被移出组织、但仍留在 team 上」的 fixture：sys_team.organization_id = org_a（过筛），其某条 sys_team_member 指向的 user 的 sys_member 行只在 org_b。
   • premise_still_valid: false + 不开 PR 是合法且有价值的结果。若 better-auth 的 remove-member 级联清了 sys_team_member、或 RLS 已挡住，如实说出来，别硬造一个不可达的修复。
   • ⚠️ 卡面自述这是代码阅读、不是探针。不要把卡面的读法当成已测事实。
2. 若可达：沿用既有姿态——managerIsProvablyOutsideOrg / teamIsProvablyOutsideOrg 的 provably-outside（fail-open） 形状。缺失租户事实 ⇒ 不动路由；只有存在且为负才筛掉。approvals: a department approver never resolves when the business unit has organization_id = null (every seeded BU) #3807 的裁决在这里同样成立（null 不等于「不是我的」）。
3. 一次读，不是一人一读：扩展出的 user_id 集合应当用一次 $in 查 sys_member，不要在循环里逐人查。
4. 三向 pin，双向断言：① 证明在外的成员被筛掉；② 同组织成员照常路由；③ 三条缺失事实的肢（无 sys_member 行 / 表不可读 / 请求无组织）路由不变。只钉①会让一个「筛掉所有人」的实现全绿——这正是 fix(plugin-approvals): screen the team approver expansion to the request's organization #10546 的 leg B 教训。
5. Design: does approver routing imply record read visibility? (#7345 model half) #7497 开着但不阻塞（triage 明确）：approvals: the team approver expansion is not organization-screened either — a cross-org team resolves into a request's approver slate #10230 就是在同一姿态下落地的。不要在本卡里裁决「路由是否蕴含读可见性」。
6. 消融：预测签名先写下来再跑，双向；git hash-object 证明恢复逐字节一致。
7. 门禁并集在最终提交之后、干净工作树上由 node scripts/pm/dispatch-gates.mjs 不带路径参数推导后跑；退出码在任何管道之前捕获。
   ⚠️ class [finding] Every PM dispatch list is short by the same ~5 changeset-triggered gate families — they are path-derivable, but the changeset does not exist yet when the list is derived #10309：推导出的并集已知会短。plugin-approvals 相关的 check:route-envelope 与 check:dispatcher-error-vocabulary 请显式补跑，并在报告里说明推导是否点名了它们——这是本车道连续第三次靠手写补进去才躲过一次红。
8. @objectstack/plugin-auth 的 TEST_DEBT（[finding] @objectstack/plugin-auth's TEST_DEBT records 109 where tsc now reports 98 — an 11-error surplus opened by PR #10614 #10615，记 109）⛔ 不要动、不要跑 --lower。

⚠️ CI 上一个不是你的红

check-query-options-erasure-ratchet 在 packages/spec/src/migrations/registry.ts:0:0 — Parsing error: Maximum call stack size exceeded 上可能红。这是 #10449，与你的 diff 无关。⛔ 不要为它改代码；重跑不超过一次；仍红就在报告里注明并指向 #10449。

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