feat: 新增mac ocr转文字，增加到问一问微信图片索引优化速度

- 图片文字索引性能与进度诚实化 - 问问微信：证据卡区分「消息类型」与「派生来源」，派生命中内容自报来源 - 问问微信：回答规则禁止未真实执行的多轮承诺 - 本地图片文字识别：支持 macOS 系统 OCR（Apple Vision）
2026-10-09 00:16:32 +08:00 · 2026-09-17 13:11:20 +08:00
parent b8f08d54c8
commit 1337bcb7de
53 changed files with 4985 additions and 624 deletions
@@ -0,0 +1,102 @@
+/**
+ * 大会话读取的性能日志与隐私契约。
+ *
+ * 这一组锁两件事：
+ *   1. 大会话必须留下**可归因**的一行（谁读的 / 各阶段耗时 / 行数），
+ *      否则"图片索引卡住 10 秒"永远只能靠猜；
+ *   2. 那一行里**不能**出现会话 md5 —— 稳定会话标识不进日志。
+ *
+ * 单独一个文件：`chat-service.test.ts` 里会调用 `closeChatDbForQuit()`，
+ * 那会把进程级的关闭标志置上，后续任何 `setChatDb` 都会被拒。
+ */
+import { afterEach, describe, expect, it, vi } from 'vitest'
+import type { WechatDb } from '../../src/main/wechat-db'
+import { listMessagesAsync, setChatDb } from '../../src/main/services/chat-service'
+
+const FIXTURE_MD5 = 'aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa'
+
+const makeMessages = (count: number): Array<Record<string, unknown>> =>
+  Array.from({ length: count }, (_, index) => ({
+    messageType: '1',
+    msgCreateTime: String(1_700_000_000 + index),
+    mesDes: '0',
+    mesLocalID: String(index + 1),
+    msgContent: '普通文本',
+    sender: 'wxid_fixture',
+    serverId: String(index + 1)
+  }))
+
+const installDb = (raw: Array<Record<string, unknown>>): void => {
+  const fakeDb = {
+    close: vi.fn(),
+    md5: () => FIXTURE_MD5,
+    getWcdb4Client: () => ({
+      getUsernameByMd5: () => 'fixture@chatroom',
+      resolveEmoticonCdnUrl: () => ''
+    }),
+    getUserMessagesAsync: vi.fn(async () => raw)
+  } as unknown as WechatDb
+  setChatDb(fakeDb)
+}
+
+const perfLines = (log: ReturnType<typeof vi.spyOn>): string[] =>
+  log.mock.calls
+    .map((call) => String(call[0] ?? ''))
+    .filter((message) => message.startsWith('[ChatServicePerf]'))
+
+describe('chat service listMessages perf log', () => {
+  afterEach(() => setChatDb(null))
+
+  it('leaves one attributable line for a large read, without the conversation md5', async () => {
+    installDb(makeMessages(20_000))
+    const log = vi.spyOn(console, 'log').mockImplementation(() => undefined)
+    try {
+      await listMessagesAsync(
+        FIXTURE_MD5,
+        undefined,
+        undefined,
+        undefined,
+        undefined,
+        'image-text-index'
+      )
+
+      const lines = perfLines(log)
+      expect(lines).toHaveLength(1)
+
+      const line = lines[0]
+      expect(line).toContain('caller=image-text-index')
+      expect(line).toContain('rows=20000')
+      expect(line).toContain('rawRows=20000')
+      // 拆解字段必须齐全，否则"这几秒花在哪"还是答不出来。
+      for (const field of [
+        'totalMs=',
+        'rawReadMs=',
+        'formatMs=',
+        'dateFormatMs=',
+        'contentParseMs=',
+        'sortMs=',
+        'otherMs='
+      ]) {
+        expect(line).toContain(field)
+      }
+      // 隐私：稳定会话标识绝不出现。
+      expect(line).not.toContain(FIXTURE_MD5)
+      expect(line).not.toContain('md5')
+      // 关联用进程内序号（`request-N`），不是稳定标识。
+      expect(line).toMatch(/request=request-\d+/)
+    } finally {
+      log.mockRestore()
+    }
+  })
+
+  it('stays silent for a small read so normal usage does not spam the log', async () => {
+    installDb(makeMessages(10))
+    const log = vi.spyOn(console, 'log').mockImplementation(() => undefined)
+    try {
+      await listMessagesAsync(FIXTURE_MD5, undefined, undefined, undefined, undefined, 'knowledge')
+      expect(perfLines(log)).toEqual([])
+    } finally {
+      log.mockRestore()
+    }
+  })
+})