Add generationStatus and match3d/runtime fixes

Introduce persistent generationStatus to work summaries (puzzle & match3d) and propagate generation recovery rules across docs and frontend/backends so "generating" is restored from server-side work summary rather than ephemeral front-end notices. Update API server image/asset handling (improve match3d material sheet green/alpha decontamination and promote generatedItemAssets background fields) and add runtime improvements: alpha-based hotspot hit-testing, tray insertion/three-match animation behavior, and session re-read on client-side VectorEngine timeouts/lock-screen interruptions. Many docs, tests and related frontend modules updated/added to reflect these contract and behavior changes.

src/services/creation-agent/creationAgentClientFactory.test.ts

@@ -45,6 +45,7 @@ test('creation agent action requests are not auto-retried by default', async ()
     '执行失败',
     expect.objectContaining({
       retry: expect.objectContaining({ maxRetries: 0 }),
+      timeoutMs: 1_000_000,
     }),
   );
 });

src/services/creation-agent/creationAgentClientFactory.ts

@@ -41,6 +41,7 @@ const DEFAULT_CREATION_AGENT_WRITE_RETRY: ApiRetryOptions = {
 const DEFAULT_CREATION_AGENT_ACTION_RETRY: ApiRetryOptions = {
   maxRetries: 0,
 };
+const DEFAULT_CREATION_AGENT_ACTION_TIMEOUT_MS = 1_000_000;
 
 function buildJsonPostInit(payload: unknown): RequestInit {
   return {
@@ -182,7 +183,8 @@ export function createCreationAgentClient<
       messages.executeAction,
       {
         retry: executeActionRetry,
-        timeoutMs: executeActionTimeoutMs,
+        timeoutMs:
+          executeActionTimeoutMs ?? DEFAULT_CREATION_AGENT_ACTION_TIMEOUT_MS,
       },
     );