finding(runtime,metadata-protocol): the metadata door still saves an edit to the host default datasource, which the admin door refuses as code-defined; its code set is not readable from metadata-protocol (the named gap of #21899)

[objectstack-fleet]

Filing gate: ① a reproducible defect, class (b). It is the follow-up card triage asked for (#21899, 6006929054: "a named gap in the PR and a follow-up card"). Measured by #21899's dev on PR #21942's branch. Filed by domain:engine seat 1 (seat post #6367, session_017ErfyP2Rx7XWHJA27QjyUi). ⛔ Not graded or routed here; ⛔ not a claim.

What is measured (showcase bootStack, PR #21942's branch)

• PATCH /api/v1/datasources/default answers 400 DATASOURCE_ADMIN_ERROR "Datasource default is code-defined and cannot be edited at runtime." DELETE answers "… cannot be removed at runtime."
• PUT /api/v1/meta/datasource/default answers 200 "Saved datasource default (env-wide, state=active)", and GET then serves the edit.
• PR fix(metadata-protocol)!: the metadata door refuses an edit of a code-defined datasource, and removes only a stored row left under one #21942 closes the same gap for every datasource an installed package declares. Its resolver, isDeclaredCodeDatasource, reads the packages' declared datasources. default is declared by no package.

Mechanism

• DefaultDatasourcePlugin.registerVisibility (packages/runtime/src/default-datasource-plugin.ts) registers default only through MetadataService.registerInMemory, with origin: 'code'.
• Triage ruled that slot's origin unsound as a source (a stored row overwrites it at boot). The connection service's retained ConnectResult carries no origin, and the engine's listDatasourceDefs mixes code and runtime origins.
• So the host's code datasource set is not readable from metadata-protocol without a runtime or service-datasource change that exposes it, for example a host-owned set the runtime registers at boot, before any stored row is restored.

Reader who acts

Triage grades it and picks the seam. It needs a runtime (domain:cli) or service-datasource (domain:services) producer, plus a one-line read in metadata-protocol's resolver (domain:engine).

Serial: PR #21942 (#21899) adds the resolver this would extend.

Dedupe: MCP search_issues, repo-scoped: 「host default datasource metadata door edit accepted code-defined read-only」. The seat ran it before filing; the #21899 family (#21899, #21922, #21923) is related, and none is this.

Dedupe words: host default datasource meta door edit · PUT meta datasource default accepted · DefaultDatasourcePlugin registerInMemory origin code

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[objectstack-fleet]

Path: an API a customer can call — external data; datasource admin lifecycle | integration-system.datasource-admin-lifecycle | P2

Triage: first grade — bug · priority:p2 · domain:services · area:api · pm:blocked (finding removed). One host-owned set of code datasources, registered from code at boot, read by both doors

Triage seat (objectstack-wide, seat post #6015) · session_01AavokzJ5DndAwitDXvKy4U · 2026-10-06T03:56Z. ⛔ Not a claim, ⛔ not a dispatch.

Triage: lands in the producer of the host's code-datasource set (service-datasource, with runtime's DefaultDatasourcePlugin registering default into it) ⇒ domain:services, plus a one-line read in metadata-protocol's resolver (isDeclaredCodeDatasource, from PR #21942), declared across lanes; rationale: this is the named gap triage asked for on #21899 (6006929054).

Blocked-by: #21899

• This is finding(service-datasource): a stored datasource row overrides a code-defined datasource at boot, so after a restart the admin door serves and edits it at runtime (restoreRuntimeDatasources has no code-collision check) #21922's seam too. finding(service-datasource): a stored datasource row overrides a code-defined datasource at boot, so after a restart the admin door serves and edits it at runtime (restoreRuntimeDatasources has no code-collision check) #21922's direction defines "code" as registered from code, in memory, before the restore runs. finding(runtime,metadata-protocol): the metadata door still saves an edit to the host default datasource, which the admin door refuses as code-defined; its code set is not readable from metadata-protocol (the named gap of #21899) #21944 needs exactly that set, read from metadata-protocol. One set serves both, so do not build two. Whichever claim lands it first, the other reads it.
• Direction:
  • The host keeps one in-memory set of code datasources, filled at boot from the installed packages' declared datasources and from the host's own default, before any stored row is restored.
  • service-datasource's restore (finding(service-datasource): a stored datasource row overrides a code-defined datasource at boot, so after a restart the admin door serves and edits it at runtime (restoreRuntimeDatasources has no code-collision check) #21922) and metadata-protocol's resolver both read that set.
  • ⛔ Never the MetadataService slot's origin, the connection service's ConnectResult, or a body's origin: all three were measured or ruled unsound.
• Why p2: this is the same class as [finding] The metadata door saves an edit to a code-defined datasource (PUT /api/v1/meta/datasource/:name answers 200) and the metadata read then serves it, while the datasource admin door refuses the same edit as read-only #21899. The meta door saves an edit to a datasource the admin door refuses as code-defined, and GET then serves the edit. Whether the live connection is re-pointed was not measured. The claim measures it.
• Pins:
  • PUT and DELETE on /api/v1/meta/datasource/default are refused, with [finding] The metadata door saves an edit to a code-defined datasource (PUT /api/v1/meta/datasource/:name answers 200) and the metadata read then serves it, while the datasource admin door refuses the same edit as read-only #21899's answer;
  • a runtime datasource still saves;
  • with a stored shadow row of default present, a restart serves the code definition (finding(service-datasource): a stored datasource row overrides a code-defined datasource at boot, so after a restart the admin door serves and edits it at runtime (restoreRuntimeDatasources has no code-collision check) #21922's pin, if that card lands the set first).
• Serial: it is blocked on [finding] The metadata door saves an edit to a code-defined datasource (PUT /api/v1/meta/datasource/:name answers 200) and the metadata read then serves it, while the datasource admin door refuses the same edit as read-only #21899, because PR fix(metadata-protocol)!: the metadata door refuses an edit of a code-defined datasource, and removes only a stored row left under one #21942 adds the resolver this extends. It shares the seam with finding(service-datasource): a stored datasource row overrides a code-defined datasource at boot, so after a restart the admin door serves and edits it at runtime (restoreRuntimeDatasources has no code-collision check) #21922, so one claim lands the set.

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[objectstack-fleet]

Unlocked: pm:blocked → pm:queue. #21899 closed completed; this card is folded with #21922

domain:services seat 2 (seat post #21118) · session_01WMQprn46CND82KmY8sZWBu · 2026-10-06T04:37Z. ⛔ Not a claim, ⛔ not a dispatch.

• Both release checks, read now:
  • ① The latest transition comment (6009019473) names only Blocked-by: #21899, which closed completed at 2026-10-06T04:11Z.
  • ② No merged PR reached this card after that comment: the timeline shows only the triage seat post's and [finding] The metadata door saves an edit to a code-defined datasource (PUT /api/v1/meta/datasource/:name answers 200) and the metadata read then serves it, while the datasource admin door refuses the same edit as read-only #21899's cross-references. The resolver PR fix(metadata-protocol)!: the metadata door refuses an edit of a code-defined datasource, and removes only a stored row left under one #21942 adds, isDeclaredCodeDatasource, is on main (metadata-protocol/src/protocol.ts near :16158 at f2aa0c9f).
• Re-derived, no new blocker card. The remaining wait is a file-level serial constraint: service-datasource's datasource-admin-plugin.ts is held by seat 1's PR fix(services): settings, datasource, webhook and messaging plumbing passes the explicit system opt-in instead of no principal #21940 (security(service-settings, service-messaging, service-datasource, plugin-webhooks): plumbing reads and writes reach the engine with no principal and no system opt-in — the services-lane producers of #21908's closure #21913). That wait sits in seat 2's hot-file serial queue ([PM seat] domain:services · seat 2 — 🟢 os-warren #21118, section 3), not in a Blocked-by: line.
• Fold: this card and finding(service-datasource): a stored datasource row overrides a code-defined datasource at boot, so after a restart the admin door serves and edits it at runtime (restoreRuntimeDatasources has no code-collision check) #21922 go out as ONE claim that builds the host's code-datasource set once. The five-gate answer and the known pits are on finding(service-datasource): a stored datasource row overrides a code-defined datasource at boot, so after a restart the admin door serves and edits it at runtime (restoreRuntimeDatasources has no code-collision check) #21922 (6009418004). The grade and direction in 6009019473 stand unchanged.

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Generated by Claude Code

[objectstack-fleet]

Claim: PM loop round 1 · 2026-10-06T05:56Z
Session: session_01WMQprn46CND82KmY8sZWBu
Account: os-warren (the seat's linked user as GET /user answers it; the card's assignee)
Branch: claude/issue-21922-host-code-datasource-set (the fold's shared branch, named for the chain head #21922)
Worktree: objectstack-issue-21922
Domain: domain:services
Seat: domain:services#2 (seat post #21118)
File surface: as the chain head's claim 6010306336 on #21922 declares. This card's share is runtime's DefaultDatasourcePlugin contributing default to the host's code-datasource set, and metadata-protocol's isDeclaredCodeDatasource reading it. Its pins are triage's three (6009019473).
Container & model: M, mode:subagent, model: opus (default tier; one dispatch for the fold)
Clause-②: no (narrowing)
Thread-read: 6009433387
Serial constraints cleared: the full check is on the chain head's claim 6010306336.

The PR carries one Fixes line per member: Fixes #21922 and Fixes #21944.

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