@@ -0,0 +1,29 @@
+---
+'@objectstack/lint': minor
+'@objectstack/spec': patch
+---
+
+The metadata save door runs the two page component rules that `objectstack validate`, `objectstack build` and `objectstack lint` run. A page saved through Studio, REST `/meta` or an MCP/AI author whose components carry an undeclared, wrong-typed or retired property (`component-props-unknown-key`, `component-props-invalid`), or a component `type` inside a spec-reserved namespace that the platform does not declare (`component-type-unknown`), is refused with `422 INVALID_METADATA`, and each issue carries the fix the CLI already prints. Before, the save answered `200` and the renderer ignored the property or drew a placeholder.
+
+Clause-②: no (narrowing)
+
+<!-- adr-0087: not-required (already-registered element-data-source-and-object-block-filter-rule-array, element-flat-data-binding-retired, element-text-variant-heading-subheading-retired, ui-action-group-menu-member-params-array-only, ui-action-group-menu-members-typed, ui-object-block-grouping-config-typed, ui-object-form-custom-fields-typed, ui-object-form-fields-names-typed, ui-object-form-members-typed, ui-object-form-sections-typed, ui-object-gantt-markers-typed, ui-object-grid-columns-typed, ui-object-grid-export-options-closed, ui-object-grid-kanban-calendar-list-members-typed, ui-object-grid-page-size-positive-integer-refused, ui-object-grid-row-members-typed, ui-object-kanban-conditional-formatting-typed, ui-object-map-gantt-tree-navigation-typed, ui-object-master-detail-form-details-closed, ui-object-metric-aggregate-trend-typed, ui-object-metric-compare-to-typed, ui-object-metric-drill-down-report-typed, ui-object-metric-drill-down-typed, ui-object-timeline-items-typed, ui-object-timeline-mapping-typed, ui-record-line-items-props-closed) Every props shape the save door now refuses was declared, and each narrowing of one recorded in its own D3 entry, before this change; the entries named here are the step's narrowings whose refusal the component-props gate carries, and this diff amends each one whose text said a stored page still saves, to say its next save meets that gate at the metadata save door. The change moves an existing rule onto one more door; it removes no key and rewrites no shape, so it adds no entry and no conversion: nothing on the load path refuses a page. -->
+
+**BREAKING**: an accept-set narrowing on the metadata save door (`PUT /api/v1/meta/page/:name`, the draft promotion `POST /api/v1/meta/page/:name/publish`, the package publish, and every in-process `saveMetaItem` caller on an environment's authoring channel), shipped as `minor` under the launch-window convention for accept-set narrowings (`.changeset/pre.json` is open in `next` pre mode).
+
+**The next save of a stored page whose components carry an undeclared, wrong-typed or retired property, or a reserved-namespace type the platform does not declare, is refused with the fix; stored pages keep serving until then.** The door judges writes only: a stored page row is not re-judged at boot, loads and is served as before, and a draft save is not judged until it is published.
+
+## FROM → TO
+
+| you saved | the door now answers | write instead |
+|:--|:--|:--|
+| `page:header` with `properties: { titel: 'Deals' }` | `422`, `component-props-unknown-key` at `…properties.titel`, offering `title` | `properties: { title: 'Deals' }` |
+| `record:related_list` with `properties: { limit: 'five' }` | `422`, `component-props-invalid`, naming the expected type | `properties: { limit: 5 }` |
+| a component typed `page:headr` | `422`, `component-type-unknown`: "Rename `page:headr` → `page:header`." | `type: 'page:header'` |
+| a component typed `acme:pipeline_board` (outside the reserved namespaces) | unchanged: saved | nothing |
+
+**The one-line fix: apply what the issue names, then save again.** If a component really does read the key, the props row in `@objectstack/spec` is what is wrong, not the page.
+
+**Who is affected.** A deployment whose stored pages carry such a finding: those pages keep loading and serving, and only their next save is refused until the finding is fixed. `objectstack migrate meta --stored` does not list these findings. The authored pages measured when the props findings became errors (37 pages in this repository and 8 in `objectstack-ai/hotcrm`) carried none, and the in-repo page corpus carries no `component-type-unknown` finding; deployed rows were not measured. The two former ADR-0087 D2 aliases on page component properties, `page:header` `description` (write `subtitle`) and an `element:button` inline `type: 'api'` action's object `params` (write `bodyExtra`), are retired from the load path at 18 and refused at every door with the rename (`objectstack validate`, load, and this save door), so the save door and `objectstack validate` agree on them.
+
+The `@objectstack/spec` change is text only: the reason of each D3 migration entry named above (and the matching step-18 summaries) said a stored page still saves and loads, and now says it still loads and that its next save meets the component-props gate at the metadata save door.
@@ -15,7 +15,7 @@ The page action rows are `action:button` and `action:icon` (`properties`), and e
 - **`onSuccess`** was any value (`z.unknown()`). The runner reads only `ActionSchema`'s post-success block, `{ navigate, openIn }`, and classifies `navigate` with the url scheme set. So `onSuccess: { navigate: 'javascript:alert(1)' }` parsed clean, and so did a misspelled key or a callback shape, which the runner gives no reading at all. The rows now hold `ActionSchema.onSuccess`'s own block, the same instance by reference, so a row's verdict on any `onSuccess` value is the action's: the scheme set on `navigate`, the rename prescriptions for `url` / `redirectUrl` / `to` / `route` / `path` / `target` / `navigateTo` / `href`, and the closed `openIn` with its `'self'` default.
 - **The executor key** (`actionType` on a node, `type` on a member) is a free string, and the rows judged a url `target` only when it read `'url'`. The runner also dispatches `'navigation'`, its local alias of `'url'`, to the same navigator, so `actionType: 'navigation'` with `target: 'javascript:…'` parsed clean. The url executor now has one spelling on the rows: `'navigation'` is refused at the executor key, with the rename onto `'url'`. The key otherwise stays open: a handler a host registers under another name (`navigate_create`, `navigate_edit`, …) is still dispatched by name.
 
-A page's `properties` bag is outside the stack parse. `os validate` judges it through its props gate, which parses the bag against these same rows, so it reports each refusal at the row's own path with the same text, as a `component-props-invalid` finding (an error, like every finding of that gate). A stored page still saves and loads.
+A page's `properties` bag is outside the stack parse. `os validate` judges it through its props gate, which parses the bag against these same rows, so it reports each refusal at the row's own path with the same text, as a `component-props-invalid` finding (an error, like every finding of that gate). A stored page still loads; the metadata save door runs the same gate, so the next save of a page carrying a refused row is refused with the same text.
 
 ### FROM → TO
 
 
@@ -16,7 +16,7 @@ Clause-②: no (narrowing)
 - `component-props-unknown-key`: a key the component's props row does not declare, at the bag's own level, on a strict object or union arm below it, or on a strip-mode object below it.
 - `component-props-invalid`: a value the props row rejects (a wrong type, a missing required prop, a closed-set refusal such as a url action's `target` scheme or a `record:details` section's `count`, a retired enum value), and a missing `dataSource.object` on `element:record_picker`, `element:number` and `element:repeater`.
 
-**Not judged here.** The runtime publish door (the Studio, REST `/meta`, MCP) does not run this rule, so a page saved there is not refused for any of these. `defineStack` and the stack schema keep the open `properties` bag as written. A component `type` that `ComponentPropsMap` carries no row for (a `custom.*` or plugin type) is not judged.
+**Not judged here.** `defineStack` and the stack schema keep the open `properties` bag as written. A component `type` that `ComponentPropsMap` carries no row for (a `custom.*` or plugin type) is not judged.
 
 `ComponentPropsSeverity`, the type `@objectstack/lint` exports for these findings, narrows from `'error' | 'warning'` to `'error'`.
 
 
@@ -470,7 +470,7 @@ orthogonal to both, and no cell here can carry it; it is written out in
 | Chart bindings outside dashboards (#3583) | ✓ | ✓ | ✓ | — |
 | Navigation vs. granted access (ADR-0090 D6) | ✓ | ✓ | ✓ | — |
 | SDUI scoped styling (ADR-0065) | ✓ | ✓ | ✓ | — |
-| SDUI component props — every `ComponentPropsMap` verdict: an undeclared prop, a value its props schema rejects, a missing `dataSource.object` binding, and a retired prop (`retiredKey()`) refused with its prescription (#23026, #23147) | ✓ | ✓ | ✓ | — |
+| SDUI component props — every `ComponentPropsMap` verdict: an undeclared prop, a value its props schema rejects, a missing `dataSource.object` binding, and a retired prop (`retiredKey()`) refused with its prescription (#23026, #23147; at the save door #23388) | ✓ | ✓ | ✓ | ✓ᵖ |
 | JSX / React page source parses (ADR-0080/0081) | ✓ | ✓ | ✓ | — |
 | Approval-node approvers (ADR-0090 D3) | ✓ | ✓ | ✓ | ✓ᶠ |
 | Security posture (ADR-0090 — e.g. every custom object declares `sharingModel`) | ✓ | ✓ | ✓ | ✓ˢᵖᵉᵇᵒ |
 
@@ -1149,11 +1149,10 @@ export const AUTHORING_RULES: readonly AuthoringRule[] = [
   //
   // `normalized` for a reason worth stating, since the props bag survives the
   // Zod parse UNCHANGED and both tiers would otherwise carry the same data: the
-  // ADR-0087 conversion layer runs inside `normalizeStackInput`, so a converted
-  // alias (`page-header-subtitle-alias` rewrites `properties.description` →
-  // `subtitle`) is already canonical here and is never reported as undeclared —
-  // while a schema error elsewhere in the stack cannot take these findings down
-  // with it.
+  // ADR-0087 conversion layer runs inside `normalizeStackInput`, so a prop
+  // spelling a live D2 conversion still rewrites on the load path is already
+  // canonical here and is never reported as undeclared — while a schema error
+  // elsewhere in the stack cannot take these findings down with it.
   //
   // Gating: every finding is an `error`, so `os validate`, `os build` and
   // `os lint` refuse an undeclared prop, a value the props schema rejects, a
@@ -1172,24 +1171,28 @@ export const AUTHORING_RULES: readonly AuthoringRule[] = [
     input: 'normalized',
     commands: ALL,
     source: 'packages/lint/src/validate-component-props.ts',
-    surfaces: CLI_ONLY,
+    // On the runtime door by the ruling of record on #23388 (record
+    // 6161173492, letter B), which replaced, for this rule and
+    // `validateComponentTypes`, the #4716 discipline both entries were held
+    // on (a gating rule reaches the Studio/REST/MCP door only behind a
+    // measured false-refusal budget over stored tenant page rows — a
+    // discipline a dispatch seat set, not a maintainer ruling). The ruling's
+    // principle: a page with a finding is fixed, then saved. No stored-row
+    // replay came first, by that ruling.
+    //
     // Page-local, MEASURED (#23147): the rule reads `stack.pages` and nothing
     // else — each page's components through `walkPageComponents`, judged
     // against the static `ComponentPropsMap` — and a `page` write's per-write
     // snapshot (`runtime-gate.ts`) carries the written page as `pages[0]`. Over
     // the showcase's 28 pages, the rule's findings through that snapshot were
     // identical to the whole-stack run's findings on the same page, as
     // authored (0 = 0) and with an undeclared key and a wrong-typed prop
-    // planted (19 = 19). So RUNTIME_NEEDS_FULL_SNAPSHOT, which this entry
-    // carried until then, was false here. What holds the rule off the runtime
-    // door is the `validateComponentTypes` discipline: a measured false-refusal
-    // budget over STORED tenant page rows, which no population measured so far
-    // is. Crossing is its own rollout decision.
-    surfaceReason:
-      'Gating rule held off the runtime door pending the crossing discipline the gating object rules ' +
-      'went through: a measured false-refusal budget, here over stored tenant page rows. The rule is ' +
-      'page-local and a page write\'s snapshot carries everything it reads; the 0-finding inventories ' +
-      'cover authored config-file metadata only. Crossing is its own rollout card.',
+    // planted (19 = 19). So the crossing is this `surfaces`/`runtimeTypes`
+    // pair and nothing else. Stored pages keep loading and serving: the gate
+    // judges writes, never the read path, so only the next save of a page
+    // with a finding is refused, with the fix the finding carries.
+    surfaces: CLI_AND_RUNTIME,
+    runtimeTypes: ['page'],
     run: (stack) => validateComponentProps(stack),
   },
   // The TYPE half of the same door (#12183's ruling): a component `type` inside
@@ -1204,29 +1207,29 @@ export const AUTHORING_RULES: readonly AuthoringRule[] = [
     input: 'normalized',
     commands: ALL,
     source: 'packages/lint/src/validate-component-types.ts',
-    surfaces: CLI_ONLY,
-    // Page-local judgment, so the per-write snapshot IS sufficient — what the
-    // crossing owes is not a wider snapshot but the #4716 discipline: a gating
-    // rule reaches the Studio/REST/MCP door only behind a measured
-    // false-refusal budget over REAL stored page rows, and the population this
-    // rule was measured on (the in-repo corpus, 0 findings) is authored
-    // config-file metadata, not tenant rows. A tenant page carrying a
-    // reserved-namespace type their own plugin registers would be refused at
-    // the only door that tenant has. Crossing is its own rollout decision with
-    // that replay as its evidence, not a bare `runtimeTypes` edit.
-    surfaceReason:
-      'Gating rule held off the runtime door pending the crossing discipline the gating object rules ' +
-      'went through: a measured false-refusal budget, here over stored tenant page rows (the in-repo ' +
-      '0-finding measurement covers ' +
-      'authored config-file metadata only). Crossing is its own rollout card.',
+    // On the runtime door by the same ruling of record as
+    // `validateComponentProps` above (#23388, record 6161173492, letter B),
+    // which crossed this rule in the same change: the #4716 stored-row
+    // false-refusal budget it was held on was seat-set, and the maintainer's
+    // principle — fix the page, then save it — applies unchanged. A page
+    // carrying a type inside a spec-reserved namespace the platform does not
+    // declare ships a placeholder to end users, and the refusal names the fix
+    // (a declared type, or a type outside the reserved namespaces). Page-local
+    // judgment, so the per-write snapshot IS sufficient: the crossing is this
+    // `surfaces`/`runtimeTypes` pair and nothing else. Stored pages keep
+    // loading and serving; only their next save is judged.
+    surfaces: CLI_AND_RUNTIME,
+    runtimeTypes: ['page'],
     run: (stack) => validateComponentTypes(stack),
   },
   // #22158, card ① of the ruling of record on #8346 (letter B′): a page that
   // declares `print` is a document, and every block in it must come from the
   // spec's printable block subset (`PRINTABLE_PAGE_COMPONENT_TYPES`). Gating,
-  // and on the runtime door from birth — the rule's header says why the
-  // false-refusal budget `validateComponentTypes` is held on is zero here by
-  // construction: no page could carry `print` before this rule landed.
+  // and on the runtime door from birth — the rule's header says why a
+  // stored-row false-refusal budget was zero here by construction: no page
+  // could carry `print` before this rule landed. (Its siblings
+  // `validateComponentProps` and `validateComponentTypes` crossed later, on
+  // the ruling of record on #23388, record 6161173492.)
   {
     name: 'validatePrintPageBlocks',
     tier: 'gating',
 
@@ -85,8 +85,9 @@
  * types as the lit control in the same query. Every in-tree occurrence of a
  * retired name is the map itself, a tombstone prescription, conversion or
  * migration registry data, a test, or prose. ⚠️ That reading covers authored
- * config-file metadata only — the same scope limit the rule's `surfaceReason`
- * records for stored tenant rows.
+ * config-file metadata only, not stored tenant rows. The rule runs on the
+ * runtime save door too (the ruling of record on #23388): a stored row is
+ * judged on its next save, never on load.
  */
 
 import {
 
@@ -43,9 +43,10 @@
  * declare before this rule landed — `PageSchema` is closed, so no stored page
  * row and no authored config file could carry it. The population of print
  * pages is therefore EMPTY at landing, in the repo and in every tenant's
- * stored rows alike: the false-refusal budget the sibling
- * `validateComponentTypes` is still waiting on (measured over stored tenant
- * rows) is zero by construction here, not by sampling. And the judgment is
+ * stored rows alike: a false-refusal budget over stored tenant rows (the
+ * one the sibling `validateComponentTypes` was held on until the ruling of
+ * record on #23388 crossed it) is zero by construction here, not by
+ * sampling. And the judgment is
  * page-local, so a `page` write's per-write snapshot — exactly one page, its
  * own — is all it reads. Hence `surfaces: CLI_AND_RUNTIME` with
  * `runtimeTypes: ['page']` in the registry: Studio, REST `/meta` and MCP