fix(billing): mock billing admin config in auth bootstrap tests

Portal canary source guards were failing because bootstrap tests used a stub pool without query.

Co-authored-by: Cursor <cursoragent@cursor.com>

server/portal-auth-services-bootstrap.test.mjs

@@ -65,6 +65,20 @@ function createSetup(overrides = {}) {
       subscriptionOptions = receivedOptions;
       return { id: 'subscription' };
     },
+    createBillingAdminConfigServiceFn(receivedPool, receivedOptions) {
+      assert.equal(receivedPool, pool);
+      assert.equal(receivedOptions?.env, options.env);
+      calls.push(['billing-config']);
+      return {
+        id: 'billing-config',
+        async ensureSchema() {
+          calls.push(['billing-config-schema']);
+        },
+        async getEffectiveBillingConfig() {
+          return { marginMultiplier: 1.2 };
+        },
+      };
+    },
     createUserAuthFn(receivedPool, receivedOptions) {
       assert.equal(receivedPool, pool);
       calls.push(['user-auth']);
@@ -161,11 +175,13 @@ test('preserves subscription, auth, and user-space wiring', async () => {
   let captured = setup.getCaptured();
 
   assert.deepEqual(
-    setup.calls.slice(0, 4).map(([name]) => name),
+    setup.calls.slice(0, 6).map(([name]) => name),
     [
       'plan-schema',
       'plan-service',
       'subscription-service',
+      'billing-config',
+      'billing-config-schema',
       'user-auth',
     ],
   );
@@ -173,6 +189,11 @@ test('preserves subscription, auth, and user-space wiring', async () => {
     result.subscriptionService._planCatalogService,
     setup.planCatalogService,
   );
+  assert.equal(result.billingConfigService?.id, 'billing-config');
+  assert.equal(
+    captured.userAuthOptions.billingConfigService?.id,
+    'billing-config',
+  );
   assert.deepEqual(
     await captured.subscriptionOptions.getPlanAsync(
       'pro',