objectql: narrow the phase-1 one-holder refusal from environment to namespace for flow (ADR-0150 child B, flow family) #31696

epic:#31527#1 · os-steve · session_01ADHkmP7o3uDTti21wLTfPf

Filing gate: ④ coordination node: child B of the epic #31527 (parent and per-layer children), as ADR-0150 (docs/adr/0150-behavioural-metadata-addressed-by-package-objects-keep-the-literal-prefix.md, merged in #31586 at 5d1382a)'s execution plan lists it. Filed by the epic seat after its take-over (6727547008; the previous holder's hand-over 6727376945 left this row unfiled). ⛔ Not a claim.
Ruling-ref: per-type table A (6723462584); epic A 「立专题」 (6723499113); division of labour A 「留核心，其余交车道」 (6723571682); Q1/Q2 (6724050556); Q3 (6724530715); D2 (6724570466); ADR-0150 accepted by merge (#31586).
Business reason: inherited from the parent #31527. Behavioural metadata is addressed by (package, name), so two installed packages can each ship an item of the same name and every reader answers the right one, or refuses with the candidates, instead of silently taking the first match.
Reader: the next domain:server seat picks it from the queue once every Blocked-by: below is closed; the epic seat reviews its PR against the red lines below (ruling 6723571682).
Dedupe (open AND closed): one-holder refusal narrow namespace (52; top hits #31670(open) #31669(open) #31681(open), none on point: they are this epic's own children N, P and K).
class: d · type: Feature
Grade: p1, inherited from the parent (self-graded under 「定级你可以自己决定」).
Blocked-by: #31672
Blocked-by: #31691
Blocked-by: #31693

维护者速读

收尾卡：flow 这几类的「全环境只能一个持有者」拒绝收窄为「同一命名空间内唯一」。只在这些类型的索引、入口和存储引用都带上软件包之后做。

What to build

Phase 1's one-holder refusal for flow narrows from one package holder per environment to one holder per namespace (D2, D9), only after this family's E, G and S children have landed. Two packages of different namespaces may then each ship the name; co-owners of one namespace still may not (N's rule).

Surface

• Expected file surface: objectql bare-name-one-holder.ts.
• Clause-②: no.
• Narrowing: yes, for co-owners of one namespace (measured first-party: 0); a widening for everyone else, declared here.

Acceptance — the epic's three red lines (every child shares them)

• Resolution never loosens. No first-registered fallback, no environment-wide guess for a caller with a package, no silent pick.
• Ambiguity is reported, never guessed. Every refusal and every migration report names every candidate.
• Independently releasable (red line 3). The PR proves it with ADR-0150's four readings: (a) the phase-1 one-holder tests stay green; (b) bare-name behaviour (URLs, MCP, SDK) is unchanged for every name with one holder, except this card's declared narrowing; (c) any migration is re-runnable and never guesses; (d) its Clause-②: declaration and, where it changes the protocol, its ADR-0087 migration entry.
• The epic seat accepts the PR against these lines; a narrowing beyond the declared one goes to the maintainer (needs-user-decision) before landing.

Parent: #31527.