test(metadata-protocol): the served object schema carries 48 top-level properties

The /meta/types control pins the served property count per type. `object` moved 47 → 48 when it gained `sharing` (#25760, the per-object sharing opt-ins of the ADR-0055 §3 amendment); the pin and its history line move with it. Test Core (7/8) on e0883a0: 1 failed of 21557 before the move, 266 files green after.

Claude-Session: https://claude.ai/code/session_01XT1qCAHDq5w7zUftxENNeE
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/metadata-protocol/src/protocol.meta-types-degenerate-derivation.test.ts

@@ -312,7 +312,8 @@ describe('#17501 — /meta/types serves a real schema for `action`, and moves no
      * blocks a service attaches per caller on read), 45 → 46 when it gained
      * `defaultRowScope` (#24338, the object's default row scope), and 46 → 47
      * when it gained `membershipKeys` (#25234, the roster object's declarative
-     * membership keys). `field` moved 75 → 77 the
+     * membership keys), and 47 → 48 when it gained `sharing` (#25760, the
+     * per-object sharing opt-ins of the ADR-0055 §3 amendment). `field` moved 75 → 77 the
      * same way when it gained `dueLike` and `settledWhen` (#22227, a date's
      * deadline and when it is settled), 77 → 78 when it gained
      * `conditionalFormatting` (#22228, a field's cell formatting rules), and
@@ -329,7 +330,7 @@ describe('#17501 — /meta/types serves a real schema for `action`, and moves no
      */
     const CARD_PROPERTY_COUNTS: Record<string, number> = {
         agent: 26, app: 30, dashboard: 22, dataset: 16, field: 80, flow: 24,
-        hook: 22, object: 47, page: 26, position: 13, report: 21, skill: 17, tool: 14,
+        hook: 22, object: 48, page: 26, position: 13, report: 21, skill: 17, tool: 14,
     };
 
     it.each(Object.entries(CARD_PROPERTY_COUNTS))(