fix(spec): 上一个 PR 里的保护信封检查是空的 —— 它跳过了 25 个类型里的 24 个（#4001）

.changeset/protection-envelope-invariant-was-hollow.md

@@ -0,0 +1,15 @@
+---
+'@objectstack/spec': patch
+---
+
+The protection-envelope invariant test was hollow — it silently skipped 24 of 25 registered types. Fixed, and it immediately found 8 undeclared envelopes instead of 1.
+
+The check shipped in the previous change asserted two things about every registered metadata type: that it does not *reject* the ADR-0010 envelope its loader stamps (the hard-422 case), and that it does not *strip* it (the silent-loss case). The reject half worked — it found `hook` and `datasource` on its first run.
+
+The strip half did not. It probed each schema with one generic body and asked whether `_packageId` survived; a type whose required fields that body did not satisfy failed for unrelated reasons and the assertion returned early. **24 of the 25 types took that early return.** Only `field` was ever actually checked, and the suite reported green.
+
+That is the campaign's own subject matter — a success signal covering an omission — reproduced inside the instrument built to detect it, one change after the ledger recorded the same lesson about the strictness gate's non-recursive directory walk. A check that skips is indistinguishable from a check that passes.
+
+**The declaration side is now structural.** It walks the schema — unwrapping `lazy` / `pipe` / `optional` / `default` and expanding unions — and asks whether any resolved object shape declares the key. That answer does not require constructing a valid instance, so it cannot skip. Two guards keep it honest: a type whose shape the walker cannot resolve is a hard failure (the walker going quiet is exactly when this test would otherwise stop covering something), and the debt list carries a reverse pin that fails when an entry is fixed, so the list cannot outlive the debt it tracks.
+
+**What it found:** 8 registered types do not declare the envelope, not 1 — `action`, `book`, `field`, `job`, `mapping`, `page`, `translation`, `validation`. `job` and `book` are closed here, leaving 6 on the list. Each is protection metadata lost on every round-trip today, and a hard 422 the day its schema is closed.

content/docs/references/system/book.mdx

@@ -66,6 +66,13 @@ const result = Book.parse(data);
 | **order** | `number` | optional | Orders books within the portal |
 | **audience** | `'org' \| 'public' \| { permissionSet: string }` | optional | Access audience; defaults to 'org' (inherits package grant) |
 | **groups** | `{ key: string; label: string; translations?: Record<string, { label: string }>; order?: number; … }[]` | ✅ | The spine: ordered sections. Two levels total. |
+| **_lock** | `Enum<'none' \| 'no-overlay' \| 'no-delete' \| 'full'>` | optional | Item-level lock — controls overlay & delete (ADR-0010). |
+| **_lockReason** | `string` | optional | Human-readable reason shown when a write is refused by _lock. |
+| **_lockSource** | `Enum<'artifact' \| 'package' \| 'env-forced'>` | optional | Layer that set _lock (artifact \| package \| env-forced). |
+| **_provenance** | `Enum<'package' \| 'org' \| 'env-forced'>` | optional | Origin of the item (package \| org \| env-forced). |
+| **_packageId** | `string` | optional | Owning package machine id. |
+| **_packageVersion** | `string` | optional | Owning package version. |
+| **_lockDocsUrl** | `string` | optional | Optional documentation link surfaced next to _lockReason. |
 
 
 ---

content/docs/references/system/job.mdx

@@ -65,6 +65,13 @@ const result = CronSchedule.parse(data);
 | **retryPolicy** | `{ maxRetries?: integer; backoffMs?: integer; backoffMultiplier?: number }` | optional | Retry policy: failed runs (including timeouts) are retried with exponential backoff (delay = backoffMs * backoffMultiplier^(retry-1)) up to maxRetries retries after the initial attempt (#3494). Omit for the legacy single-attempt behavior. |
 | **timeout** | `integer` | optional | Per-attempt time limit in milliseconds; an over-limit run is recorded with execution status "timeout" (#3494). The in-flight handler is abandoned, not forcibly cancelled. Omit for no time limit. |
 | **enabled** | `boolean` | optional | Whether the job is enabled |
+| **_lock** | `Enum<'none' \| 'no-overlay' \| 'no-delete' \| 'full'>` | optional | Item-level lock — controls overlay & delete (ADR-0010). |
+| **_lockReason** | `string` | optional | Human-readable reason shown when a write is refused by _lock. |
+| **_lockSource** | `Enum<'artifact' \| 'package' \| 'env-forced'>` | optional | Layer that set _lock (artifact \| package \| env-forced). |
+| **_provenance** | `Enum<'package' \| 'org' \| 'env-forced'>` | optional | Origin of the item (package \| org \| env-forced). |
+| **_packageId** | `string` | optional | Owning package machine id. |
+| **_packageVersion** | `string` | optional | Owning package version. |
+| **_lockDocsUrl** | `string` | optional | Optional documentation link surfaced next to _lockReason. |
 
 
 ---

docs/audits/2026-07-unknown-key-strictness-ledger.md

@@ -169,9 +169,34 @@ dropped at parse, and nothing failed.
 
    The check separates the two severities, because they are not the same bug:
    *rejecting* the envelope is live breakage and is asserted unconditionally with
-   no exemption list; *stripping* it silently loses protection metadata on
-   round-trip and is tracked with a debt list (`field` only) — and each entry
-   there becomes a rejection the day its schema is closed.
+   no exemption list; *not declaring* it silently loses protection metadata on
+   round-trip and is tracked with a debt list — and each entry there becomes a
+   rejection the day its schema is closed.
+9. **And then that check turned out to be hollow — one change after this file
+   recorded the same lesson about the gate above.** Its declaration half probed
+   each schema with one generic body and asked whether `_packageId` survived. A
+   type whose required fields that body did not satisfy failed for unrelated
+   reasons and the assertion returned early, so **24 of 25 registered types took
+   that early return**. Only `field` was ever really checked, and the suite
+   reported green.
+
+   Rewritten to walk the schema *structurally* — unwrapping `lazy` / `pipe` /
+   `optional` / `default`, expanding unions — which needs no valid instance and
+   therefore cannot skip. Two guards keep it honest: a type the walker cannot
+   resolve is a hard failure (the walker going quiet is precisely when the test
+   would otherwise stop covering something), and the debt list carries a reverse
+   pin that fails when an entry is fixed, so the list cannot outlive its debt.
+
+   It then found **8** undeclared envelopes rather than 1 — `action`, `book`,
+   `field`, `job`, `mapping`, `page`, `translation`, `validation`. `job` and
+   `book` were closed immediately; 6 remain.
+
+   Three occurrences now of one pattern, in three different instruments: the
+   ledger gate's non-recursive directory walk, the strip probe's early return,
+   and (from the other direction) `strictObject(` not matching the site count.
+   Each was a measuring tool reporting completeness it did not have. **The rule
+   this file keeps re-deriving: before trusting a green check, make it go red on
+   something you know is there.**
 
 This is the empirical argument for the ratchet: the inference "no metadata in
 the repo carries unknown keys" was **false three times over**, and only the

packages/spec/authorable-surface.json

@@ -5682,6 +5682,13 @@
     "system/BatchProgress:status",
     "system/BatchProgress:succeeded",
     "system/BatchProgress:total",
+    "system/Book:_lock",
+    "system/Book:_lockDocsUrl",
+    "system/Book:_lockReason",
+    "system/Book:_lockSource",
+    "system/Book:_packageId",
+    "system/Book:_packageVersion",
+    "system/Book:_provenance",
     "system/Book:audience",
     "system/Book:description",
     "system/Book:groups",
@@ -6136,6 +6143,13 @@
     "system/IncidentResponsePolicy:triageDeadlineHours",
     "system/IntervalSchedule:intervalMs",
     "system/IntervalSchedule:type",
+    "system/Job:_lock",
+    "system/Job:_lockDocsUrl",
+    "system/Job:_lockReason",
+    "system/Job:_lockSource",
+    "system/Job:_packageId",
+    "system/Job:_packageVersion",
+    "system/Job:_provenance",
     "system/Job:description",
     "system/Job:enabled",
     "system/Job:handler",

packages/spec/src/kernel/metadata-type-schemas.test.ts

@@ -9,30 +9,40 @@
  * type, and `getMetaItemLayered` → `saveMetaItem` round-trips a body carrying
  * the stamped `_packageId` / `_provenance`. A type whose schema does not declare
  * {@link MetadataProtectionFields} therefore mishandles it in one of two ways,
- * and the severities are different enough to assert separately:
+ * and the severities differ enough to assert separately:
  *
  * - **Rejects it** (the schema is `.strict()`): a hard 422 on the overlay path.
- *   Live breakage. Asserted unconditionally below — no debt list.
- * - **Strips it** (the schema is strip-mode): the envelope is silently dropped
- *   on every parse, so protection metadata is lost on round-trip. Quieter, and
- *   it becomes the first case the day that schema is closed.
+ *   Live breakage. Asserted unconditionally — no exemption list.
+ * - **Does not declare it** (strip mode): the envelope is silently dropped on
+ *   every parse, so protection metadata is lost on round-trip. Quieter, and it
+ *   becomes the first case the day that schema is closed.
  *
- * ## Why this file exists at all
+ * ## Why this file exists
  *
  * The same defect was found four separate times, by four different routes,
- * before anyone wrote a check for it:
+ * before anyone wrote a check for it: `permission` (#4001 Tier-A, as a hard 422
+ * caught by the dogfood gate), `position` (step 2, by reading), `seed` + `doc`
+ * (the registered-types batch, while converting), and then `hook` +
+ * `datasource` — which THIS test found on its first run, both already strict on
+ * `main` and therefore both in the 422 class.
  *
- *   1. `permission` (#4001 Tier-A) — surfaced as a hard 422 on the ADR-0094
- *      overlay path, caught by the dogfood gate.
- *   2. `position` (#4001 step 2) — found by reading, as the "known sibling gap".
- *   3. `seed` + `doc` (#4001 registered-types batch) — found while converting.
- *   4. `hook` + `datasource` — found by THIS test, on its first run. Both had
- *      gone `.strict()` in the #4001 data step without declaring the envelope,
- *      so both were in the hard-422 class on `main` at the time.
+ * ## Why the declaration check is structural, not a parse probe
  *
- * Finding one defect four times by hand is the signal that the check is
- * missing, not that the search worked. Case 4 is the argument in miniature: two
- * live bugs that three prior hand-searches had walked past.
+ * The first version of this file probed with one generic body and asked whether
+ * `_packageId` survived. It reported green. It was hollow: a type whose required
+ * fields the generic body did not satisfy failed for unrelated reasons, and the
+ * assertion returned early — **so 24 of 25 types were silently skipped and only
+ * `field` was ever really checked.** A check that skips is indistinguishable
+ * from a check that passes, which is the exact defect this whole campaign is
+ * about, reproduced in the instrument built to detect it.
+ *
+ * So the declaration side now walks the schema structurally — unwrapping
+ * `lazy` / `pipe` / `optional` / `default` and expanding unions — and asks
+ * whether any resolved object shape declares the key. That answer does not
+ * depend on constructing a valid instance, so it cannot skip. And a type whose
+ * shape cannot be resolved at all is a hard FAILURE rather than a pass: the
+ * walker not understanding a schema is exactly when this test would otherwise
+ * go quiet.
  */
 
 import { describe, expect, it } from 'vitest';
@@ -42,12 +52,7 @@ import { listMetadataTypeSchemaTypes, getMetadataTypeSchema } from './metadata-t
 /** The ADR-0010 stamp the loader puts on every registered item. */
 const STAMP = { _packageId: 'pkg_probe', _provenance: 'package' as const };
 
-/**
- * A body that satisfies the required fields of the registered types generously
- * enough to reach the unknown-key check. Types it does not fully satisfy fail
- * on other grounds, which the assertions below distinguish and ignore — this
- * test is only about how the `_`-prefixed envelope is treated.
- */
+/** A body generous enough to reach the unknown-key check on most types. */
 const PROBE: Record<string, unknown> = {
   name: 'probe_item',
   label: 'Probe',
@@ -58,6 +63,66 @@ const PROBE: Record<string, unknown> = {
   ...STAMP,
 };
 
+/**
+ * Registered types that parse the envelope but do not declare it, so it is
+ * dropped on every round-trip. Every entry is a bug awaiting a
+ * `...MetadataProtectionFields` spread — not a permanent exemption — and each
+ * becomes a hard 422 the day its schema is closed. Empty this list; never grow
+ * it. A NEW registered type belongs in neither list.
+ *
+ * The structural walk found 8 of these; the probe it replaced had been hiding 7.
+ * `job` and `book` were closed in the same pass, leaving 6.
+ */
+const UNDECLARED_ENVELOPE = new Set<string>([
+  'action', 'field', 'mapping', 'page', 'translation', 'validation',
+]);
+
+/**
+ * Every object shape reachable from `schema`, unwrapping the wrappers the
+ * registered types actually use and expanding unions. Returns `[]` only when
+ * the walker does not understand the schema — which the caller treats as a
+ * failure, never as a pass.
+ */
+function objectShapes(schema: unknown, depth = 0): Record<string, unknown>[] {
+  if (!schema || depth > 12) return [];
+  const s = schema as { shape?: Record<string, unknown>; _zod?: { def?: Def }; def?: Def };
+  const def = s._zod?.def ?? s.def;
+  switch (def?.type) {
+    case 'object':
+      return [s.shape ?? def.shape ?? {}];
+    case 'lazy':
+      try {
+        return objectShapes(def.getter?.(), depth + 1);
+      } catch {
+        return [];
+      }
+    case 'pipe':
+      return [...objectShapes(def.in, depth + 1), ...objectShapes(def.out, depth + 1)];
+    case 'union':
+      return (def.options ?? []).flatMap((o) => objectShapes(o, depth + 1));
+    case 'optional':
+    case 'nullable':
+    case 'default':
+    case 'prefault':
+    case 'readonly':
+    case 'nonoptional':
+    case 'catch':
+      return objectShapes(def.innerType, depth + 1);
+    default:
+      return [];
+  }
+}
+
+interface Def {
+  type?: string;
+  shape?: Record<string, unknown>;
+  getter?: () => unknown;
+  in?: unknown;
+  out?: unknown;
+  options?: unknown[];
+  innerType?: unknown;
+}
+
 /** `_`-prefixed keys the schema reported as unrecognized, if any. */
 function rejectedEnvelopeKeys(type: string): string[] {
   const result = getMetadataTypeSchema(type)!.safeParse(PROBE);
@@ -68,27 +133,33 @@ function rejectedEnvelopeKeys(type: string): string[] {
     .filter((k) => k.startsWith('_'));
 }
 
-/**
- * Types that parse the envelope but drop it. Every entry is a bug awaiting a
- * `...MetadataProtectionFields` spread, not a permanent exemption — and each
- * becomes a hard 422 the day its schema is closed. Empty this list; never grow
- * it. A new registered type belongs in neither list.
- */
-const STRIPS_ENVELOPE = new Set<string>([
-  // Registered so a single field can be addressed as a metadata item, but
-  // authored inside `object.fields`, where the object's own envelope covers the
-  // package. Closing this one means auditing that nesting, so it is tracked
-  // rather than bundled into the batch that found it.
-  'field',
-]);
-
 describe('registered metadata types', () => {
   const types = listMetadataTypeSchemaTypes();
 
   it('is a non-empty set — guards the derivation returning nothing', () => {
     expect(types.length).toBeGreaterThan(15);
   });
 
+  it('every registered type resolves to a schema', () => {
+    for (const type of types) {
+      expect(getMetadataTypeSchema(type), `no schema registered for '${type}'`).toBeDefined();
+    }
+  });
+
+  /**
+   * The no-silent-skip guard. If the walker stops understanding a schema shape,
+   * the declaration assertions below would quietly stop covering that type —
+   * so that condition fails here first, loudly, with the type named.
+   */
+  it.each(types)('%s resolves to at least one object shape the walker understands', (type) => {
+    expect(
+      objectShapes(getMetadataTypeSchema(type)).length,
+      `the structural walker cannot resolve '${type}' to an object shape, so the `
+      + 'envelope assertions below would silently skip it. Teach `objectShapes` the '
+      + 'wrapper this schema uses.',
+    ).toBeGreaterThan(0);
+  });
+
   it.each(types)('%s does not REJECT the protection envelope its loader stamps', (type) => {
     expect(
       rejectedEnvelopeKeys(type),
@@ -98,25 +169,30 @@ describe('registered metadata types', () => {
     ).toEqual([]);
   });
 
-  it.each(types.filter((t) => !STRIPS_ENVELOPE.has(t)))(
-    '%s does not STRIP the protection envelope',
+  it.each(types.filter((t) => !UNDECLARED_ENVELOPE.has(t)))(
+    '%s DECLARES the protection envelope',
     (type) => {
-      const result = getMetadataTypeSchema(type)!.safeParse(PROBE);
-      // A probe that fails for unrelated reasons (a required field this generic
-      // body does not supply) tells us nothing about stripping — and the reject
-      // case is already covered unconditionally above.
-      if (!result.success) return;
+      const shapes = objectShapes(getMetadataTypeSchema(type));
       expect(
-        (result.data as Record<string, unknown>)._packageId,
-        `'${type}' silently drops \`_packageId\` — protection metadata is lost on `
-        + 'every round-trip. Add `...MetadataProtectionFields` to its schema.',
-      ).toBe(STAMP._packageId);
+        shapes.some((shape) => '_packageId' in shape),
+        `'${type}' does not declare \`_packageId\`, so the envelope its loader stamps is `
+        + 'dropped on every parse. Add `...MetadataProtectionFields` to its schema.',
+      ).toBe(true);
     },
   );
 
-  it('every registered type resolves to a schema', () => {
-    for (const type of types) {
-      expect(getMetadataTypeSchema(type), `no schema registered for '${type}'`).toBeDefined();
-    }
-  });
+  it.each([...UNDECLARED_ENVELOPE])(
+    '%s is still on the undeclared-envelope debt list (remove it once fixed)',
+    (type) => {
+      // A reverse pin: when someone fixes one of these, this fails and forces the
+      // list to shrink. Without it the debt list would outlive the debt and start
+      // exempting types that no longer need exempting.
+      expect(types).toContain(type);
+      const shapes = objectShapes(getMetadataTypeSchema(type));
+      expect(
+        shapes.some((shape) => '_packageId' in shape),
+        `'${type}' now declares the envelope — remove it from UNDECLARED_ENVELOPE.`,
+      ).toBe(false);
+    },
+  );
 });

packages/spec/src/system/book.zod.ts

@@ -2,6 +2,7 @@
 
 import { z } from 'zod';
 import { lazySchema } from '../shared/lazy-schema';
+import { MetadataProtectionFields } from '../kernel/metadata-protection.zod';
 
 /**
  * Package Documentation Navigation — the `book` element (ADR-0046 §6).
@@ -115,6 +116,13 @@ export const BookSchema = lazySchema(() =>
     order: z.number().optional().describe('Orders books within the portal'),
     audience: BookAudienceSchema.optional().describe("Access audience; defaults to 'org' (inherits package grant)"),
     groups: z.array(BookGroupSchema).describe('The spine: ordered sections. Two levels total.'),
+
+    // ADR-0010 — runtime protection envelope (internal — set by the loader).
+    // `book` is a registered metadata type, so the artifact loader stamps
+    // `_packageId` / `_provenance` on it like every sibling. Undeclared, they
+    // were dropped on every parse — protection metadata lost on round-trip, and
+    // a hard 422 waiting for the day this shape is closed.
+    ...MetadataProtectionFields,
   }),
 );