feat: v0.7.3 成本收口 · 状态一致 · 死账清理 — Prompt Cache 根治 + SSRF DNS Pinning + 87 用例扩充全量回归

P1 修复面收口: Prompt Cache 根治(日期/记忆/附件三类易变内容出 system 入用户消息
  前置块 user-context.ts, system 跨 run 字节级稳定; Anthropic system 块数组化 +
  cache_control ephemeral 断言, DeepSeek 自动缓存前缀命中 — 多轮对话输入 token
  成本降数量级); 编辑重发/重新生成幽灵 Trace 双侧根治(DB truncateMessagesAfter
  同步过滤 metadata.traceSteps + 前端 trimTraceStepsByAnchor 镜像, 严格小于锚点
  时间戳, 同毫秒等值判废); sessions:deleteMessage 死通道全链路删除(渲染层零调用
  + message_count 漂移面); Ollama vision 能力门控全链路(MetonaModelInfo
  .supportsVision 贯穿 adapter/IPC/store/UI, model-capabilities.ts 三道判定纯函数,
  未知保守放行); 记忆固化节流(consolidation-policy 纯函数: 总开关 + 内容门控
  [回答>=200字符或存在成功工具调用] + 会话级 10 分钟频率窗口, 三 memory.* 配置键)

P2 安全纵深: SSRF DNS Pinning 关闭 rebinding 窗口(ssrf-guard 重构
  resolvePublicAddresses 单源; ssrf-dispatcher 以 undici Agent.connect.lookup
  钉死校验 IP, TLS SNI 保持原域名, 一次性 dispatcher 用后即毁; 代理激活显式
  退化为仅入口校验); web_fetch 重写手动逐跳重定向循环(每跳先校验后连接,
  替代 redirect:follow 内核跟跳的中间跳裸奔, 上限 5 跳); http_request 换用
  pinned fetch; web_search 可达性预检加固(私有 URL 零请求 + 不跟跳, 3xx 视为
  可达); Agent 浏览器 CORS 通配收紧为 Origin 回显 + Vary: Origin;
  ConfirmationHook.forgetSession 会话终态清理(会话删除/abort 联动/SubAgent
  终结三处接线, 根治 rememberedDecisions 泄漏)

P3 架构还债: agent.enableReflection 死配置全链路接线(main→shared→引擎→
  Orchestrator→设置开关, REFLECTING 状态真实可达); AgentLoopConfig.timeoutMs
  死字段删除; MemoryManager.cleanupExpired 挂入健康检查周期(expires_at 回收
  管道真实化); buildSafeEnv 收敛 utils/safe-env.ts 单源(run_command 与 MCP
  stdio 共用, 终结双实现漂移); Trace 生命周期治理(metadata 只保留最近 20 个
  run — keepRecentRuns 纯函数; JSONL 录制启动自动清理保留 200 个 + 设置页
  手动清理); SLO/健康快照可视化(app:healthSnapshot IPC + 设置页只读卡片 +
  审计链一键校验)

P4 能力演进: 会话标题 LLM 自动生成(TitleGenerator — 每会话幂等/并发重入复用
  同一 Promise/自定义标题不覆盖/失败静默回退, Sidebar 经 config:changed 实时
  刷新); MCP 自动重连(5s/15s/60s 退避最多 3 次, reconnecting 状态机,
  teardownConnection 内部拆除保留簿记 — 用户断开/开关关闭即时取消, 设置页
  显示第 N/3 次); 死循环检测 ABAB 乒乓模式(最近4轮 A→B→A→B 交替判定, 补齐
  docs 第五章"两状态反复切换"检测契约); i18n 第三阶段(ChatInput/LLMSettings/
  OnboardingWizard/MemoryViewer 主链路文案出层, zh-CN + en-US 双字典补齐)

测试: 737 → 824 用例(+87, 新增 8 个测试文件 + 扩展 3 个)。新覆盖: user-context
  分组/空值收缩/拼接契约、context-builder 字节级稳定性、Anthropic cache_control
  四态、consolidation-policy 九路判定矩阵、ssrf-dispatcher(pinned lookup/重定向
  解析/IP 校验)、forget-session 会话隔离、trace-lifecycle run 淘汰、
  trace-trim 严格小于边界、safe-env 净化矩阵、mcp-reconnect 退避状态机
  (fake timers)、title-generator 并发重入、SQLite 侧 truncate×TRACE 联动
  (Electron ABI)。测试驱动修复: GIT_*/ 注释终止块注释、重连计数被自身重试
  前置断开重置(拆 teardownConnection 保留簿记)、TitleGenerator 幂等占位与
  并发去重的检查顺序竞态(去重先于幂等)

版本: 0.7.3; README 同步(配置表新增 agent.enableReflection/memory.*/mcp.autoReconnect)

回归: typecheck 双端 0 错误; ESLint 0/0; 系统 Node 771 通过 53 跳过
  (better-sqlite3 ABI); Electron ABI 全量 824/824 零跳过

electron/harness/adapters/__tests__/provider-request-shapes.test.ts

@@ -109,29 +109,69 @@ describe('AnthropicAdapter — 请求体契约', () => {
             role: 'assistant',
             content: null,
             toolCalls: [
-              { id: 'tc_1', name: 'read_file', args: { path: 'a.txt' }, iteration: 1, timestamp: Date.now() },
+              {
+                id: 'tc_1',
+                name: 'read_file',
+                args: { path: 'a.txt' },
+                iteration: 1,
+                timestamp: Date.now(),
+              },
             ],
             timestamp: Date.now(),
           },
-          { role: 'tool', content: null, toolResult: { toolCallId: 'tc_1', toolName: 'read_file', result: 'data', success: true, durationMs: 1, timestamp: Date.now() }, timestamp: Date.now() },
+          {
+            role: 'tool',
+            content: null,
+            toolResult: {
+              toolCallId: 'tc_1',
+              toolName: 'read_file',
+              result: 'data',
+              success: true,
+              durationMs: 1,
+              timestamp: Date.now(),
+            },
+            timestamp: Date.now(),
+          },
           // 孤立 tool_result（前面没有对应 tool_use）应被过滤
-          { role: 'tool', content: null, toolResult: { toolCallId: 'tc_orphan', toolName: 'x', result: '', success: true, durationMs: 1, timestamp: Date.now() }, timestamp: Date.now() },
+          {
+            role: 'tool',
+            content: null,
+            toolResult: {
+              toolCallId: 'tc_orphan',
+              toolName: 'x',
+              result: '',
+              success: true,
+              durationMs: 1,
+              timestamp: Date.now(),
+            },
+            timestamp: Date.now(),
+          },
           { role: 'user', content: 'next?', timestamp: Date.now() },
         ],
       }),
     );
 
     const body = bodies[0];
-    expect(body.system).toContain('You are Metona.');
+    // v0.7.3 P1-1: system 转为块数组并打 cache_control 断言（稳定前缀 prompt cache）
+    const system = body.system as Array<{
+      type: string;
+      text: string;
+      cache_control: { type: string };
+    }>;
+    expect(Array.isArray(system)).toBe(true);
+    expect(system[0].text).toContain('You are Metona.');
+    expect(system[0].cache_control).toEqual({ type: 'ephemeral' });
     expect(Array.isArray(body.messages)).toBe(true);
     const msgs = body.messages as Array<{ role: string; content: Array<Record<string, unknown>> }>;
     // tool_use 的 assistant 消息存在且携带 id/name
     const assistantToolMsg = msgs.find((m) => m.role === 'assistant');
-    expect(assistantToolMsg?.content[0]).toMatchObject({ type: 'tool_use', id: 'tc_1', name: 'read_file' });
+    expect(assistantToolMsg?.content[0]).toMatchObject({
+      type: 'tool_use',
+      id: 'tc_1',
+      name: 'read_file',
+    });
     // tool 结果以 user 角色 tool_result 形态出现且配对 id 正确；孤立者被丢弃
-    const toolResultBlocks = msgs.flatMap((m) =>
-      m.content.filter((c) => c.type === 'tool_result'),
-    );
+    const toolResultBlocks = msgs.flatMap((m) => m.content.filter((c) => c.type === 'tool_result'));
     expect(toolResultBlocks).toHaveLength(1);
     expect(toolResultBlocks[0].tool_use_id).toBe('tc_1');
   });
@@ -166,7 +206,15 @@ describe('AnthropicAdapter — 请求体契约', () => {
     });
     const { bodies } = captureFetch();
     await adapter.send(
-      makeRequest({ params: { maxTokens: 1500, temperature: 0, stream: false, thinkingEnabled: true, thinkingEffort: 'low' } }),
+      makeRequest({
+        params: {
+          maxTokens: 1500,
+          temperature: 0,
+          stream: false,
+          thinkingEnabled: true,
+          thinkingEffort: 'low',
+        },
+      }),
     );
     const body = bodies[0];
     const thinking = body.thinking as { type: string; budget_tokens: number };
@@ -185,13 +233,17 @@ describe('AnthropicAdapter — 请求体契约', () => {
     });
     const { bodies } = captureFetch();
     await adapter.send(
-      makeRequest({ params: { maxTokens: 4096, temperature: 0.7, stream: false, thinkingEnabled: true } }),
+      makeRequest({
+        params: { maxTokens: 4096, temperature: 0.7, stream: false, thinkingEnabled: true },
+      }),
     );
     expect(bodies[0].temperature).toBeUndefined();
     expect(bodies[0].thinking).toBeDefined();
 
     await adapter.send(
-      makeRequest({ params: { maxTokens: 4096, temperature: 0.7, stream: false, thinkingEnabled: false } }),
+      makeRequest({
+        params: { maxTokens: 4096, temperature: 0.7, stream: false, thinkingEnabled: false },
+      }),
     );
     expect(bodies[1].temperature).toBe(0.7);
     expect(bodies[1].thinking).toBeUndefined();
@@ -236,13 +288,37 @@ describe('OllamaAdapter — 请求体契约', () => {
     const adapter = makeOllama();
     const { bodies } = captureFetch();
 
-    await adapter.send(makeRequest({ params: { maxTokens: 4096, temperature: 0, stream: false, thinkingEnabled: true, thinkingEffort: 'low' } }));
+    await adapter.send(
+      makeRequest({
+        params: {
+          maxTokens: 4096,
+          temperature: 0,
+          stream: false,
+          thinkingEnabled: true,
+          thinkingEffort: 'low',
+        },
+      }),
+    );
     expect(bodies[0].think).toBe('low');
 
-    await adapter.send(makeRequest({ params: { maxTokens: 4096, temperature: 0, stream: false, thinkingEnabled: true, thinkingEffort: 'max' } }));
+    await adapter.send(
+      makeRequest({
+        params: {
+          maxTokens: 4096,
+          temperature: 0,
+          stream: false,
+          thinkingEnabled: true,
+          thinkingEffort: 'max',
+        },
+      }),
+    );
     expect(bodies[1].think).toBe(true);
 
-    await adapter.send(makeRequest({ params: { maxTokens: 4096, temperature: 0, stream: false, thinkingEnabled: false } }));
+    await adapter.send(
+      makeRequest({
+        params: { maxTokens: 4096, temperature: 0, stream: false, thinkingEnabled: false },
+      }),
+    );
     expect(bodies[2].think).toBeUndefined();
   });
 
@@ -319,12 +395,26 @@ describe('AgnesAdapter — 思考模式对称性（v0.6.4）', () => {
     });
     const { bodies } = captureFetch();
 
-    await adapter.send(makeRequest({ params: { maxTokens: 4096, temperature: 0, stream: false, thinkingEnabled: true, thinkingEffort: 'high' } }));
+    await adapter.send(
+      makeRequest({
+        params: {
+          maxTokens: 4096,
+          temperature: 0,
+          stream: false,
+          thinkingEnabled: true,
+          thinkingEffort: 'high',
+        },
+      }),
+    );
     expect(
       ((bodies[0].chat_template_kwargs as Record<string, unknown>) ?? {}).enable_thinking,
     ).toBe(true);
 
-    await adapter.send(makeRequest({ params: { maxTokens: 4096, temperature: 0, stream: false, thinkingEnabled: false } }));
+    await adapter.send(
+      makeRequest({
+        params: { maxTokens: 4096, temperature: 0, stream: false, thinkingEnabled: false },
+      }),
+    );
     expect(
       ((bodies[1].chat_template_kwargs as Record<string, unknown>) ?? {}).enable_thinking,
     ).toBe(false);