test(metadata,metadata-protocol): the new legacy-organization doubles hold ObjectQL's findOne contract and are pinned

The DatabaseLoader count pin's engine double opens findOne with
assertEngineFindOnePredicate, and the engine-double ledger records the
doubles both new pin files declare (check:engine-double-contract --write).

Claude-Session: https://claude.ai/code/session_01TekAoE8QbLrxFVJsdNuRgg
Co-authored-by: Claude <noreply@anthropic.com>

Author: claude

packages/metadata/src/loaders/database-loader.legacy-organization-count.test.ts

@@ -11,6 +11,7 @@
  * CONTROL), whose answers are the ones the loader always gave.
  */
 import { describe, expect, it } from 'vitest';
+import { assertEngineFindOnePredicate } from '@objectstack/metadata-core';
 import { DatabaseLoader } from './database-loader.js';
 
 type Row = Record<string, unknown>;
@@ -45,7 +46,10 @@ function engineOver(seed: Record<string, Row[]>, legacyShape: boolean) {
   };
   return {
     async find(t: string, q?: any) { return select(t, q); },
-    async findOne(t: string, q?: any) { return select(t, q)[0] ?? null; },
+    async findOne(t: string, q?: any) {
+      assertEngineFindOnePredicate(t, q);
+      return select(t, q)[0] ?? null;
+    },
     async count(t: string, q?: any) { return rowsOf(t).filter((r) => matches(r, q?.where)).length; },
     getDriverForObject(t: string) {
       return {

scripts/engine-double-contract.pinned.json

@@ -826,6 +826,21 @@
       "verb": "findOne",
       "pinned": 1
     },
+    {
+      "file": "packages/metadata-protocol/src/protocol.legacy-organization-read-seam.test.ts",
+      "verb": "delete",
+      "pinned": 1
+    },
+    {
+      "file": "packages/metadata-protocol/src/protocol.legacy-organization-read-seam.test.ts",
+      "verb": "findOne",
+      "pinned": 1
+    },
+    {
+      "file": "packages/metadata-protocol/src/protocol.legacy-organization-read-seam.test.ts",
+      "verb": "update",
+      "pinned": 1
+    },
     {
       "file": "packages/metadata-protocol/src/protocol.legacy-overlay-delete.test.ts",
       "verb": "delete",
@@ -2131,6 +2146,11 @@
       "verb": "update",
       "pinned": 1
     },
+    {
+      "file": "packages/metadata/src/loaders/database-loader.legacy-organization-count.test.ts",
+      "verb": "findOne",
+      "pinned": 1
+    },
     {
       "file": "packages/objectql/src/action-activation.test.ts",
       "verb": "update",