Switch to VectorEngine gpt-image-2 and edits

Replace uses of the legacy `gpt-image-2-all` model with `gpt-image-2` and standardize image workflows: no-reference generation uses POST /v1/images/generations, any-reference flows use POST /v1/images/edits with multipart `image` parts. Update SKILLs, generation scripts, decision logs, and docs to reflect the contract change and edits-vs-generations guidance. Apply corresponding changes across backend (api-server match3d/puzzle modules, openai image adapter, mappers, telemetry, spacetime client/module), frontend components and services (Match3D, Puzzle, CreativeImageInputPanel, runtime shells), and add new spritesheet/parser files and tests. Also add media/logo.png. These changes align repository code and documentation with the VectorEngine image API contract and update generation/upload handling (green-screen -> alpha processing, spritesheet handling, and related tests).

src/services/puzzle-agent/puzzleAgentClient.ts

@@ -12,6 +12,8 @@ import type { TextStreamOptions } from '../aiTypes';
 import { createCreationAgentClient } from '../creation-agent';
 
 const PUZZLE_AGENT_API_BASE = '/api/runtime/puzzle/agent/sessions';
+// 拼图草稿生成会串起多段图片生成，请求层保持 30 分钟等待窗口。
+const PUZZLE_DRAFT_ACTION_TIMEOUT_MS = 30 * 60 * 1000;
 const puzzleAgentHttpClient = createCreationAgentClient<
   CreatePuzzleAgentSessionRequest,
   CreatePuzzleAgentSessionResponse,
@@ -30,6 +32,7 @@ const puzzleAgentHttpClient = createCreationAgentClient<
     streamIncomplete: '拼图共创消息流式结果不完整',
     executeAction: '执行拼图共创操作失败',
   },
+  executeActionTimeoutMs: PUZZLE_DRAFT_ACTION_TIMEOUT_MS,
 });
 
 /**