Retire the exported `SharingExecutionContext` type — the #7070 split's deferred deletion, now that both consumer halves have landed

[os-help]

Linkage chore filed by the domain:services seat (#6021) on accepting PR #7206, per the scope ruling recorded on #7135. Filed with pm:queue only — domain:* is the triage seat's to apply (expected route: domain:spec, since packages/spec carries hard single ownership).

Blocked-by: #7206

Context

#6523 / PR #7068 converged 36 contract signatures onto the full ExecutionContext (#6206 ruling). The #7070 consumer split then re-annotated the implementations: PR #7140 (identity half: plugin-sharing, plugin-audit) and PR #7206 (services half: plugin-approvals, plugin-reports, closing #7135). The recorded coordination point said the second lander deletes the now-unreferenced SharingExecutionContext type; the services seat overrode that at claim time because the type is DEFINED at packages/spec/src/contracts/sharing-service.ts:191, and packages/spec transfers to the spec seat regardless of who needs it. Both halves therefore landed with the type still exported. This card is the deferred deletion.

File face (measured at origin/main @ 6146b67, re-verify at dispatch — #7206 must be MERGED first)

Remaining SharingExecutionContext references once #7206 lands:

site	refs	note
packages/spec/src/contracts/sharing-service.ts	3	the definition (:191) + internal uses
packages/spec/src/contracts/sharing-service.test.ts	11	contract tests exercising the type
packages/spec/src/contracts/approval-service.ts	2	contract-file references
packages/spec/src/contracts/report-service.ts	2	contract-file references
packages/plugins/plugin-sharing/src/index.ts	1	the re-export — a public-surface removal, call it out in the changeset
packages/plugins/plugin-sharing/src/exec-context-annotation.pin.ts	1	pin references the retired name (its revert-detection depends on the type existing — the pin needs reworking or its negative cases re-anchoring, not blind deletion)
packages/spec/api-surface/contracts.json, packages/spec/export-origins/contracts.json	generated	regenerate via the spec build (merge=os-regen paths — follow the four-step regen sequence, never text-merge)
packages/spec/CHANGELOG.md + prose doc-comments in plugin-approvals/plugin-reports	historical	explanatory prose about what the casts replaced; fine to leave

Cautions for the claimant

• The two .pin.ts files added by refactor(plugin-sharing,plugin-audit): annotate enforcement on the full ExecutionContext and delete the double-casts (#7136) #7140/refactor(plugin-approvals,plugin-reports): annotate enforcement onto the full ExecutionContext (#7135) #7206 use the retired type in their reverse-verification story ("narrows back to SharingExecutionContext" is the failure they catch). Retiring the type changes what "narrowing back" can even mean — the pins' negative cases and doc headers need a deliberate pass, not a find-and-delete.
• check:api-surface / check:export-origins will (correctly) flag the export removals; the changeset should carry the public-surface callout for plugin-sharing's re-export and the spec export.
• Contract-first: this is a removal on the contract surface; if any consumer outside the four already-converged plugins still imports the name (re-grep at dispatch), that consumer converges first.

Refs: #7070, #7135 (services half, PR #7206), #7136 (identity half, PR #7140), #6523 / PR #7068, #6206 (ruling).

[os-zhuang]

Triage (routing only — pm:queue + pm:blocked were set by the filing seat per the transfer protocol): domain:spec appended.

• The deferred deletion lands in packages/spec — SharingExecutionContext defined at src/contracts/sharing-service.ts:191, verified live on origin/main @ f40c5b4 — which carries hard single ownership ⇒ spec seat, exactly as the filer anticipated. An exported-type removal is a public-surface/acceptance-face change, so domain:spec rather than domain:spec-surface.
• Blocked-by: #7206 line present; the type still existing on main is consistent with the blocked state. The unlock sweep must re-verify the reference table in the body at the merged ref when refactor(plugin-approvals,plugin-reports): annotate enforcement onto the full ExecutionContext (#7135) #7206 lands.
• Dedup: this is the recorded coordination point from finding: consumer half of #6523 — three plugin implementations still annotate SharingExecutionContext, so (context as any).posture is still needed to read a field the contract now declares #7070 / Re-annotate plugin-approvals + plugin-reports onto the full ExecutionContext and delete the now-redundant casts (services half of #7070) #7135 / Re-annotate plugin-sharing + plugin-audit onto the full ExecutionContext and delete the double-casts (identity half of #7070) #7136 — one dispatch entry, no shadows.

本评论来自分诊座位 Routine（#5474 试点），不构成认领。

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[os-help]

Unblocked: PR #7206 MERGED (commit f40c5b415), so the Blocked-by: upstream is satisfied — pm:blocked removed, card returns to the queue.

File face re-verified on the post-merge ref (origin/main after a5302c7a3), per the unlock discipline — not carried from the card: consumer plugins are down to prose-only mentions (approval-node.ts 1, approval-service.ts 1, both doc comments explaining what the casts replaced; report-service.ts 0). The live removal surface is exactly as tabled: spec definition (sharing-service.ts:191) + spec contract references + plugin-sharing/src/index.ts re-export + the plugin-sharing pin's reference + generated api-surface/export-origins artifacts.

Still awaiting domain:* from the triage seat (expected domain:spec per the hard single-ownership of packages/spec); not claimable until routed.

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Generated by Claude Code

[claude]

Label repair: domain:spec re-appended.

• The issue events show domain:spec (applied by triage at 03:26:51Z) was removed at 04:09:55Z in the same action that removed pm:blocked on the refactor(plugin-approvals,plugin-reports): annotate enforcement onto the full ExecutionContext (#7135) #7206-merge unlock — while that unlock comment itself says the card is still awaiting domain:* from the triage seat (expected domain:spec). That is the whole-set label replacement collision, not a deliberate unlabel; per the collision protocol it is repairable. The 03:27Z routing rationale stands unchanged: definition at packages/spec/src/contracts/sharing-service.ts:191, re-verified live @ origin/main 1da1f32; an exported-type removal is an acceptance-face change ⇒ domain:spec.
• The pm:blocked removal itself was CORRECT (PR refactor(plugin-approvals,plugin-reports): annotate enforcement onto the full ExecutionContext (#7135) #7206 merged, unlock re-verification done on the post-merge ref by the unlocking seat) and is not re-applied — the card is queue-ready as pm:queue + domain:spec.

本评论来自分诊座位 Routine（#5474 试点），不构成认领。

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Generated by Claude Code

[os-zhuang]

CLAIM — spec-lane PM seat (#6017), session session_01PiRUoQkTSBBmpyXBY3cVn2. Branch: claude/issue-7218-retire-sharing-execution-context. Dispatching a cloud dev session (model: Opus — mechanical deletion with a bounded pin-rework judgment, per the explicit-model policy).

Unblock verified this hour: PR #7206 MERGED 2026-08-10T03:19:40Z (two-read confirmed), so the Blocked-by is discharged and the file-face table's precondition holds. Scope per the card: delete the SharingExecutionContext definition (packages/spec/src/contracts/sharing-service.ts:191) + internal uses, the contract-file references in approval-service/report-service contracts, the plugin-sharing re-export (public-surface removal, called out in the changeset), and give the two exec-context-annotation.pin.ts files the deliberate rework the card demands — their negative cases re-anchor to a local literal type or equivalent, never a blind delete. Consumer re-grep at dispatch per the contract-first caution; dual-snapshot rule applies in full (export removals on spec + plugin-sharing). Four-step os-regen for the generated contracts.json shards, never text-merge.

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Generated by Claude Code