Increase VectorEngine timeouts and add image UI

Add VectorEngine image generation config and raise request timeouts (env + scripts) from 180000 to 1000000ms. Introduce a reusable CreativeImageInputPanel component with tests and wire up mobile keyboard-focus helpers; update generation views and related tests (CustomWorldGenerationView, BarkBattle editor, Match3D, Puzzle flows). Improve API error handling / VectorEngine request guidance (packages/shared http.ts and docs), and apply multiple backend/frontend fixes for puzzle/match3d/prompt handling. Also include extensive docs and decision-log updates describing UI/UX decisions and verification steps.

src/services/apiClient.test.ts

@@ -587,6 +587,49 @@ describe('apiClient', () => {
     });
   });
 
+  it('prefers api error details.reason over details.message for diagnostics', async () => {
+    setStoredAccessToken('details-reason-first-token', { emit: false });
+    fetchMock.mockResolvedValueOnce(
+      createResponseMock({
+        status: 502,
+        body: JSON.stringify({
+          ok: false,
+          data: null,
+          error: {
+            code: 'UPSTREAM_ERROR',
+            message: '上游暂不可用',
+            details: {
+              provider: 'vector-engine',
+              message:
+                '创建拼图 VectorEngine 图片编辑任务失败：error sending request for url (https://api.vectorengine.ai/v1/images/edits)',
+              reason:
+                '无法连接 VectorEngine 图片编辑接口，请检查服务器网络、DNS、防火墙或代理配置',
+              endpoint: 'https://api.vectorengine.ai/v1/images/edits',
+            },
+          },
+          meta: {},
+        }),
+        headers: {
+          'Content-Type': 'application/json',
+        },
+      }),
+    );
+
+    await expect(
+      requestJson('/api/runtime/puzzle/agent/sessions/test/actions', {
+        method: 'POST',
+      }, '执行拼图操作失败。'),
+    ).rejects.toMatchObject({
+      message:
+        '无法连接 VectorEngine 图片编辑接口，请检查服务器网络、DNS、防火墙或代理配置',
+      status: 502,
+      code: 'UPSTREAM_ERROR',
+      details: {
+        provider: 'vector-engine',
+      },
+    });
+  });
+
   it('uses api error details.reason when details.message is absent', async () => {
     setStoredAccessToken('details-reason-token', { emit: false });
     fetchMock.mockResolvedValueOnce(