test(cli): restate the nine artifact-envelope keys in the option-B acceptance pin and zoo prose

Patch round on the seat's ruling: the literal envelope list at the pin's
shape assertion gains `devPlugins` and `plugins` (nine keys, in the file's
own sort order), and the zoo header/const prose that said "seven" says
"nine". Mechanical restatement of the count where it is printed; nothing
else in either file moves.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01H2oQebDDxYKfWZusyd8GXk

Author: claude

packages/cli/test/fixtures/option-b-collection-zoo.ts

@@ -23,7 +23,7 @@
  * The key set that separates them is **derived from the two schemas**, never
  * transcribed here — `ObjectStackDefinitionSchema` ∩ `AssembledPackageBodySchema`
  * is precisely "the collections a package owns", and the complement is the
- * seven artifact-envelope keys `packages/spec/src/assembled-package-body.test.ts`
+ * nine artifact-envelope keys `packages/spec/src/assembled-package-body.test.ts`
  * classifies. A hand-written list would be a third transcription of a set the
  * implementation already refuses to transcribe, and — the half that matters
  * here — a collection family added to the stack schema next month would join
@@ -64,7 +64,7 @@ export const PACKAGE_OWNED_COLLECTION_KEYS: readonly string[] = (() => {
   return shapeKeys(ObjectStackDefinitionSchema).filter((k) => bodyKeys.has(k)).sort();
 })();
 
-/** The seven keys an option-B artifact still carries at its top level. */
+/** The nine keys an option-B artifact still carries at its top level. */
 export const ARTIFACT_ENVELOPE_KEYS: readonly string[] = (() => {
   const owned = new Set(PACKAGE_OWNED_COLLECTION_KEYS);
   return shapeKeys(ObjectStackDefinitionSchema).filter((k) => !owned.has(k)).sort();

packages/cli/test/option-b-reader-acceptance.pin.test.ts

@@ -186,7 +186,7 @@ describe('#15004 — option-B acceptance pin: every subsystem must see its colle
     // than two empties agreeing.
     expect(PACKAGE_OWNED_COLLECTION_KEYS.length).toBeGreaterThan(30);
     expect(ARTIFACT_ENVELOPE_KEYS).toEqual(
-      ['api', 'i18n', 'manifest', 'onEnable', 'packages', 'runtimeModule', 'server'],
+      ['api', 'devPlugins', 'i18n', 'manifest', 'onEnable', 'packages', 'plugins', 'runtimeModule', 'server'],
     );
 
     // Every key option B drops is a package-owned collection, and every key it