diff --git a/cocoscreator_projects/YouleNexus/assets/framework/sdk/runtime/game-session-host.ts b/cocoscreator_projects/YouleNexus/assets/framework/sdk/runtime/game-session-host.ts
index 7063323..689acec 100644
--- a/cocoscreator_projects/YouleNexus/assets/framework/sdk/runtime/game-session-host.ts
+++ b/cocoscreator_projects/YouleNexus/assets/framework/sdk/runtime/game-session-host.ts
@@ -34,7 +34,12 @@ export function assertGameEntry(entry: GameEntry): void {
   if (typeof entry.createModule !== 'function') {
     throw new Error('GameEntry createModule must be a function');
   }
-  assertGameModule(entry.createModule());
+  const module = entry.createModule();
+  try {
+    assertGameModule(module);
+  } finally {
+    disposeValidationModule(module);
+  }
 }
 
 /** Owns one isolated game module for one room at a time. */
@@ -59,15 +64,20 @@ export class GameSessionHost {
     }
 
     this.currentState = 'attaching';
+    let module: GameModule | undefined;
     try {
-      const module = this.entry.createModule();
+      module = this.entry.createModule();
       assertGameModule(module);
       this.module = module;
       module.attach(host);
       this.currentState = 'active';
     } catch (error) {
       this.module = undefined;
-      this.currentState = 'idle';
+      try {
+        module?.dispose();
+      } finally {
+        this.currentState = 'idle';
+      }
       throw error;
     }
   }
@@ -163,3 +173,9 @@ function assertGameModule(module: unknown): asserts module is GameModule {
     }
   }
 }
+
+function disposeValidationModule(module: unknown): void {
+  if (!module || typeof module !== 'object') return;
+  const dispose = (module as Record<string, unknown>).dispose;
+  if (typeof dispose === 'function') dispose.call(module);
+}
diff --git a/cocoscreator_projects/YouleNexus/assets/framework/sdk/testing/game-contract-harness.ts b/cocoscreator_projects/YouleNexus/assets/framework/sdk/testing/game-contract-harness.ts
index e95018d..b284fe7 100644
--- a/cocoscreator_projects/YouleNexus/assets/framework/sdk/testing/game-contract-harness.ts
+++ b/cocoscreator_projects/YouleNexus/assets/framework/sdk/testing/game-contract-harness.ts
@@ -9,6 +9,7 @@ import { assertGameEntry, GameSessionHost } from '../runtime/game-session-host.t
 export interface GameContractHost {
   readonly host: GameHost;
   invalidate(): void;
+  assertRestored(deskinfo: unknown): void;
 }
 
 export type GameContractHostFactory = () => GameContractHost;
@@ -24,8 +25,14 @@ export function assertGameContract(entry: GameEntry, makeHost: GameContractHostF
   }
 
   const firstFactoryModule = entry.createModule();
-  const secondFactoryModule = entry.createModule();
-  assert.notEqual(firstFactoryModule, secondFactoryModule, 'createModule must create isolated modules');
+  let secondFactoryModule: ReturnType<GameEntry['createModule']> | undefined;
+  try {
+    secondFactoryModule = entry.createModule();
+    assert.notEqual(firstFactoryModule, secondFactoryModule, 'createModule must create isolated modules');
+  } finally {
+    firstFactoryModule.dispose();
+    if (secondFactoryModule && secondFactoryModule !== firstFactoryModule) secondFactoryModule.dispose();
+  }
 
   const sessions = new GameSessionHost(entry);
   runCycle(sessions, makeHost(), entry, 1);
@@ -49,6 +56,7 @@ function runCycle(
     /route/,
   );
   sessions.restore(deskinfo);
+  contractHost.assertRestored(deskinfo);
   sessions.close();
   contractHost.invalidate();
 }
diff --git a/cocoscreator_projects/framework-tests/sdk/game-contract-harness.test.ts b/cocoscreator_projects/framework-tests/sdk/game-contract-harness.test.ts
index f4d11ce..8a3d96c 100644
--- a/cocoscreator_projects/framework-tests/sdk/game-contract-harness.test.ts
+++ b/cocoscreator_projects/framework-tests/sdk/game-contract-harness.test.ts
@@ -14,6 +14,7 @@ import {
 test('assertGameContract runs the reusable isolated session conformance suite', () => {
   let invalidations = 0;
   let nextModuleId = 0;
+  const restoredDeskinfo: unknown[] = [];
   const entry: GameEntry = {
     key: 'fixture',
     gameId: 41,
@@ -23,15 +24,19 @@ test('assertGameContract runs the reusable isolated session conformance suite',
       if (seats === 2 || seats === 4 || seats === 10) return seats;
       return 4;
     },
-    createModule: () => makeModule(++nextModuleId),
+    createModule: () => makeModule(++nextModuleId, (deskinfo) => { restoredDeskinfo.push(deskinfo); }),
   };
 
-  assert.doesNotThrow(() => assertGameContract(entry, makeConformanceHost(() => { invalidations++; })));
+  assert.doesNotThrow(() => assertGameContract(
+    entry,
+    makeConformanceHost(() => { invalidations++; }, restoredDeskinfo),
+  ));
   assert.equal(invalidations, 2);
+  assert.equal(restoredDeskinfo.length, 0);
   assert.ok(nextModuleId >= 2);
 });
 
-function makeModule(id: number): GameModule {
+function makeModule(id: number, onRestore: (deskinfo: unknown) => void): GameModule {
   let host: GameHost | undefined;
   let restored: unknown;
   let eventCount = 0;
@@ -50,8 +55,16 @@ function makeModule(id: number): GameModule {
       assert.equal(typeof data.cycle, 'number');
       messageCycle = data.cycle;
     },
-    restore(deskinfo) { restored = deskinfo; },
+    restore(deskinfo) {
+      restored = deskinfo;
+      onRestore(deskinfo);
+    },
     dispose() {
+      if (!host) {
+        assert.equal(eventCount, 0);
+        assert.equal(restored, undefined);
+        return;
+      }
       assert.ok(host);
       assert.equal(eventCount, 1);
       assert.deepEqual(restored, deskinfoFor(messageCycle!));
@@ -63,7 +76,10 @@ function deskinfoFor(cycle: number): { readonly cycle: number } {
   return { cycle };
 }
 
-function makeConformanceHost(onInvalidate: () => void): () => GameContractHost {
+function makeConformanceHost(
+  onInvalidate: () => void,
+  restoredDeskinfo: unknown[],
+): () => GameContractHost {
   return () => {
     const snapshot: PlatformGameSnapshot = {
       connection: { phase: 'connected' },
@@ -80,6 +96,9 @@ function makeConformanceHost(onInvalidate: () => void): () => GameContractHost {
         execute: () => {},
       },
       invalidate: onInvalidate,
+      assertRestored(deskinfo) {
+        assert.equal(restoredDeskinfo.shift(), deskinfo);
+      },
     };
   };
 }
diff --git a/cocoscreator_projects/framework-tests/sdk/game-session-host.test.ts b/cocoscreator_projects/framework-tests/sdk/game-session-host.test.ts
index d9d60ba..e8d68f6 100644
--- a/cocoscreator_projects/framework-tests/sdk/game-session-host.test.ts
+++ b/cocoscreator_projects/framework-tests/sdk/game-session-host.test.ts
@@ -40,15 +40,21 @@ function makeEntry(createModule: () => GameModule): GameEntry {
 }
 
 function makeModule(log: string[], onRestore?: (deskinfo: unknown) => void): GameModule {
+  let attached = false;
   return {
-    attach: () => log.push('attach'),
+    attach: () => {
+      attached = true;
+      log.push('attach');
+    },
     handlePlatformEvent: (event) => log.push(`event:${event.type}`),
     handleGameMessage: (message) => log.push(`message:${message.rpc}`),
     restore: (deskinfo) => {
       log.push('restore');
       onRestore?.(deskinfo);
     },
-    dispose: () => log.push('dispose'),
+    dispose: () => {
+      if (attached) log.push('dispose');
+    },
   };
 }
 
@@ -65,6 +71,18 @@ test('assertGameEntry rejects invalid identity, routes, seat counts, and module
   assert.throws(() => assertGameEntry({ ...entry, createModule: () => undefined as never }), /module/);
 });
 
+test('assertGameEntry disposes its validation module exactly once', () => {
+  let disposals = 0;
+  const entry = makeEntry(() => ({
+    ...makeModule([]),
+    dispose: () => { disposals++; },
+  }));
+
+  assert.doesNotThrow(() => assertGameEntry(entry));
+
+  assert.equal(disposals, 1);
+});
+
 test('GameSessionHost delivers room events and deskinfo to one active module in order', () => {
   const log: string[] = [];
   const deskinfo = { turn: 7 };
@@ -120,6 +138,21 @@ test('GameSessionHost rejects illegal state transitions and mismatched game rout
   assert.deepEqual(log, ['attach', 'message:draw']);
 });
 
+test('GameSessionHost disposes a module when attachment throws and returns to idle', () => {
+  let disposals = 0;
+  const sessions = new GameSessionHost(makeEntry(() => ({
+    ...makeModule([]),
+    attach: () => { throw new Error('attach failed'); },
+    dispose: () => { disposals++; },
+  })));
+  disposals = 0;
+
+  assert.throws(() => sessions.open(makeHost()), /attach failed/);
+
+  assert.equal(disposals, 1);
+  assert.equal(sessions.state, 'idle');
+});
+
 test('GameSessionHost disposes a module exactly once and becomes terminal after dispose', () => {
   const log: string[] = [];
   const sessions = new GameSessionHost(makeEntry(() => makeModule(log)));