{
  "schema_version": 1,
  "audit_date_utc": "2026-10-14",
  "audit_snapshot_utc": "2026-10-14T16:34:00Z",
  "audit_type": "bounded_remaining_gap_review",
  "scope": "scripts/catalog.mjs 对应的全部 250 章，各章恰好一条；不含索引、前言和独立代码文件。",
  "baseline": {
    "requested_baseline": "main eb69",
    "remote_base": "eb69b9f2ed6f3654b9480e8f2058e5b30bb10c63",
    "local_snapshot": "f17e22bf5298f4ec8802dafdd0a6ccfa722d5e28",
    "remote_base_verification_source": "主任务通过 GitHub /branches/main 读取，2026-10-14T16:18:00Z；主任务确认独立本地图的内容对应。",
    "remote_base_verified_by_parent": true,
    "requested_baseline_verified_in_checkout": false,
    "observed_commit": "f17e22bf5298f4ec8802dafdd0a6ccfa722d5e28",
    "reason": "本地使用独立提交图，不能本地解析远端哈希；以已读文件的哈希固定内容，远端基线由 GitHub 分支读取核验。",
    "registered_component_count": 17,
    "embedded_placement_count": 23,
    "embedded_chapter_count": 19,
    "registered_component_names": [
      "KvCacheDemo",
      "BpeDemo",
      "GmpDemo",
      "GradientDescentDemo",
      "BackpropDemo",
      "AttentionDemo",
      "SamplingDemo",
      "ChannelDemo",
      "IndexSearchDemo",
      "DropoutDemo",
      "MultiHeadShapeDemo",
      "IndexingSignalsDemo",
      "ContextTreeDemo",
      "AtomicReservationDemo",
      "TokenSupervisionDemo",
      "BatchStoppingDemo",
      "SelectReadinessDemo"
    ],
    "registry_source": "scripts/interactive-registry.mjs at f17e22bf5298f4ec8802dafdd0a6ccfa722d5e28",
    "source_contract": "基线注册表、placement-manifest、concept-reviews 与 coverage-status 交叉读取；并行实现未加入已覆盖计数。"
  },
  "methodology": {
    "previous_97_is_not_limit": true,
    "decision_method": "先读现有实现/概念记录；对全部章节抽读两个正文摘段，再通读 12 章，按读者能否操纵原因并检查结果分组。候选可能跨书复用，章节相近不等于接口等价。",
    "actual_reading": {
      "full_chapter_text_count": 12,
      "two_section_body_excerpt_count": 238,
      "full_chapter_ids": [
        "ch-077",
        "ch-149",
        "ch-162",
        "ch-208",
        "ch-209",
        "ch-222",
        "ch-225",
        "ch-235",
        "ch-240",
        "ch-241",
        "ch-242",
        "ch-248"
      ],
      "all_chapter_body_sample_count": 250,
      "full_book_section_review_complete": false
    },
    "honesty_boundary": "自动打开/解析 250 文件、读取全部字节和标题不等于人类式完整正文阅读。本报告不是全书穷尽章审，不据此关闭任何章节；未读的目标节在 placement 中明确标为 body_pending。",
    "not_performed": [
      "未重新执行书内训练、数据库、Go、分布式或第三方服务实验。",
      "未复核外部来源链接及其当前产品行为。",
      "未查看全部图片像素；读图注不等于图像审查。",
      "未实施或验收本报告的剩余候选；未修改书籍正文或现有覆盖文件。"
    ]
  },
  "summary": {
    "chapter_count": 250,
    "unique_chapter_count": 250,
    "book_counts": {
      "go": 115,
      "seo/book": 26,
      "seo/ai-workflow": 10,
      "llm/zero-to-hero": 31,
      "llm/nanogpt": 15,
      "llm/llms-from-scratch": 31,
      "llm/happy-llm": 22
    },
    "remaining_group_count": 65,
    "candidate_chapter_count": 170,
    "without_new_candidate_count": 80,
    "previous_static_or_prose_now_candidate_count": 83,
    "previous_static_or_prose_now_candidate_ids": [
      "ch-003",
      "ch-008",
      "ch-010",
      "ch-013",
      "ch-014",
      "ch-016",
      "ch-018",
      "ch-019",
      "ch-022",
      "ch-044",
      "ch-053",
      "ch-055",
      "ch-056",
      "ch-058",
      "ch-061",
      "ch-062",
      "ch-066",
      "ch-069",
      "ch-071",
      "ch-074",
      "ch-075",
      "ch-082",
      "ch-087",
      "ch-088",
      "ch-105",
      "ch-112",
      "ch-114",
      "ch-115",
      "ch-116",
      "ch-117",
      "ch-124",
      "ch-127",
      "ch-129",
      "ch-130",
      "ch-131",
      "ch-132",
      "ch-133",
      "ch-135",
      "ch-141",
      "ch-142",
      "ch-143",
      "ch-146",
      "ch-147",
      "ch-150",
      "ch-151",
      "ch-155",
      "ch-157",
      "ch-159",
      "ch-163",
      "ch-170",
      "ch-171",
      "ch-174",
      "ch-175",
      "ch-176",
      "ch-177",
      "ch-179",
      "ch-181",
      "ch-184",
      "ch-188",
      "ch-194",
      "ch-195",
      "ch-198",
      "ch-202",
      "ch-203",
      "ch-212",
      "ch-213",
      "ch-215",
      "ch-217",
      "ch-218",
      "ch-219",
      "ch-223",
      "ch-226",
      "ch-227",
      "ch-229",
      "ch-232",
      "ch-235",
      "ch-236",
      "ch-238",
      "ch-242",
      "ch-243",
      "ch-244",
      "ch-246",
      "ch-249"
    ],
    "current_implementation_group_count": 2,
    "fully_covered_chapter_count": 0
  },
  "current_implementation": [
    {
      "id": "ip01",
      "component": "WeightedAccumulationDemo",
      "title": "按有效 token 加权的梯度累积",
      "status": "implemented_in_current_batch_acceptance_pending",
      "chapter_numbers": [
        235,
        190
      ],
      "sections_by_chapter": {
        "235": [
          "07.1"
        ],
        "190": [
          "8.1"
        ]
      },
      "boundary": "本批两组件已冻结并通过20项定向测试，统一构建/浏览器验收仍在进行；有效token加权归一化不再列候选，尾批提交与日志时机仍列rg39。"
    },
    {
      "id": "ip02",
      "component": "PaddingColumnDemo",
      "title": "左 padding 之后定位最后有效 logits 列",
      "status": "implemented_in_current_batch_acceptance_pending",
      "chapter_numbers": [
        235
      ],
      "sections_by_chapter": {
        "235": [
          "07.4"
        ]
      },
      "related_source_sections": {
        "235": [
          "07.8"
        ]
      },
      "boundary": "本批组件已冻结，统一验收进行中；本报告不重复提议实现，分类模型的读出约定不能未审就套用。"
    }
  ],
  "remaining_groups": [
    {
      "id": "rg01",
      "title": "区分闭包读变量、defer 保存值与退出时执行",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "ExecutionTimeDemo",
      "reader_gain": "区分闭包读变量、defer 保存值与退出时执行",
      "inputs": "变量初值、循环声明方式、函数返回点、defer 登记顺序",
      "process": "手动推进赋值、登记、return 与后进先出调用，分开显示保存参数和闭包引用",
      "outputs": "每一步变量、返回值和资源清理时间线",
      "teaching_boundary": "不模拟编译器开放编码成本；循环语义须标明语言版本；不把函数退出当 goroutine 已加入等待。",
      "placements": [
        {
          "chapter_id": "ch-001",
          "path": "books/go/articles/01_语言基础/Go 函数.md",
          "sections": [
            {
              "section": "闭包保留变量，后续调用会继续用它",
              "line": 75,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "循环里要看变量在哪里声明",
              "line": 99,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "defer：登记发生在现在，调用发生在函数退出前",
              "line": 151,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-014",
          "path": "books/go/articles/02_并发编程/Go 并发常见坑.md",
          "sections": [
            {
              "section": "闭包拿到的是变量，先看变量在哪里声明",
              "line": 7,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "工具链新，不等于这个包一定使用新循环语义",
              "line": 53,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-017",
          "path": "books/go/articles/02_并发编程/context.md",
          "sections": [
            {
              "section": "每次派生都接住 cancel，即使预计很快会成功",
              "line": 45,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-019",
          "path": "books/go/articles/03_运行时与底层原理/Go defer select timer 与 netpoller.md",
          "sections": [
            {
              "section": "defer：参数现在保存，调用以后执行",
              "line": 18,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "同样是 defer，实现成本可以差很多",
              "line": 48,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg02",
      "title": "看清 nil 接口、typed nil 和动态类型",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "InterfaceValueDemo",
      "reader_gain": "看清 nil 接口、typed nil 和动态类型",
      "inputs": "动态类型、动态值、断言目标与可比较性",
      "process": "分别判断接口是否空、类型断言是否成立、比较是否会 panic",
      "outputs": "带原因的 nil/断言/比较结果",
      "teaching_boundary": "双槽只讲语义，不声称复制真实运行时内存布局；方法行为仍须读实现。",
      "placements": [
        {
          "chapter_id": "ch-004",
          "path": "books/go/articles/01_语言基础/Go 接口.md",
          "sections": [
            {
              "section": "接口值：静态类型规定能做什么，动态类型记录装的是什么",
              "line": 131,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "类型断言与 type switch：检查类型，不是转换类型",
              "line": 213,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "nil 接口与有类型的 nil：错误处理最常见的陷阱",
              "line": 281,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-010",
          "path": "books/go/articles/01_语言基础/Go 错误处理.md",
          "sections": [
            {
              "section": "nil 指针装进 error 后，可能已经不是 nil",
              "line": 50,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg03",
      "title": "追踪值复制后仍共享的底层对象",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "SharedStorageDemo",
      "reader_gain": "追踪值复制后仍共享的底层对象",
      "inputs": "slice 长度/容量、复制或追加动作、结构体内引用字段",
      "process": "追踪值对象和底层数组身份，逐次修改或触发新数组",
      "outputs": "谁的可见元素改变、哪些引用仍共享",
      "teaching_boundary": "扩容容量采用明确教学规则，不冒充 Go 实际增长公式；发送同步不授予永久所有权。",
      "placements": [
        {
          "chapter_id": "ch-007",
          "path": "books/go/articles/01_语言基础/Go 类型系统.md",
          "sections": [
            {
              "section": "数组与 slice：固定的一组元素，和查看数组的一段范围",
              "line": 89,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "append 与复制：先问底层数组还共不共用",
              "line": 187,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "容量够时，append 会写到原数组里",
              "line": 189,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-008",
          "path": "books/go/articles/01_语言基础/Go 结构体与方法.md",
          "sections": [
            {
              "section": "值接收者与指针接收者：复制的是结构体，还是指针",
              "line": 40,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "值接收者不等于深复制，也不等于只读",
              "line": 63,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "怎么选接收者",
              "line": 89,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-011",
          "path": "books/go/articles/02_并发编程/Channel.md",
          "sections": [
            {
              "section": "超时要先决定：等一条，还是等整段工作",
              "line": 138,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-022",
          "path": "books/go/articles/03_运行时与底层原理/Go 数据结构实现.md",
          "sections": [
            {
              "section": "slice：三个字段，解释共享与扩容",
              "line": 25,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg04",
      "title": "取消信号发出后，任务何时真正退出",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "TaskCompletionDemo",
      "reader_gain": "取消信号发出后，任务何时真正退出",
      "inputs": "取消时刻、是否检查 Done、阻塞点、资源归还与完成信号",
      "process": "将取消、检测、退出、释放、join 分成不同事件",
      "outputs": "已取消但仍运行/持有资源的反例及完整收尾路径",
      "teaching_boundary": "复用 ContextTreeDemo 的信号事实，但增加的是任务生命周期；不声称能强制终止外部 I/O。",
      "placements": [
        {
          "chapter_id": "ch-009",
          "path": "books/go/articles/01_语言基础/Go 迭代器.md",
          "sections": [
            {
              "section": "取消需要显式检查，break 不会打断任意阻塞",
              "line": 280,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-013",
          "path": "books/go/articles/02_并发编程/Go 并发工具选型.md",
          "sections": [
            {
              "section": "一个分支失败，另一个怎样退出",
              "line": 32,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "放弃等待，和取消共享工作，要分别决定",
              "line": 118,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "名额获取成功后，取消不会替你归还",
              "line": 181,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-015",
          "path": "books/go/articles/02_并发编程/Go 并发模式.md",
          "sections": [
            {
              "section": "errgroup：一个分支失败，让其余分支知道",
              "line": 152,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-016",
          "path": "books/go/articles/02_并发编程/Goroutine.md",
          "sections": [
            {
              "section": "“谁启动谁负责退出”，怎样落实到接口",
              "line": 69,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-017",
          "path": "books/go/articles/02_并发编程/context.md",
          "sections": [
            {
              "section": "先画出取消会走到哪里",
              "line": 16,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "每次派生都接住 cancel，即使预计很快会成功",
              "line": 45,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "Err 回答取消类别，Cause 保留具体原因",
              "line": 91,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg05",
      "title": "用同步边证明发布，用状态机检查等待协议",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "SynchronizationProtocolDemo",
      "reader_gain": "用同步边证明发布，用状态机检查等待协议",
      "inputs": "读写事件、锁范围、WaitGroup 登记和 Cond 条件",
      "process": "在三个独立预设中推进 happens-before、登记/归零、Wait/通知/重检",
      "outputs": "同步边、尚未完成的任务、被唤醒但条件仍不成立的状态",
      "teaching_boundary": "仅支持公布的有限协议，不是 race detector、任意 Go 解释器或完整并发证明器；Mutex/Once 扩展另开验收。",
      "placements": [
        {
          "chapter_id": "ch-012",
          "path": "books/go/articles/02_并发编程/Go 内存模型.md",
          "sections": [
            {
              "section": "先看一条能证明的顺序",
              "line": 7,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "缓冲会改变确认的位置",
              "line": 72,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-018",
          "path": "books/go/articles/02_并发编程/sync 包.md",
          "sections": [
            {
              "section": "Mutex：锁住的是约定，不是字段本身",
              "line": 22,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "WaitGroup：把“都结束了”做成一个可靠边界",
              "line": 69,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "Cond：等待的主角是条件，通知只是催你再看一眼",
              "line": 115,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg06",
      "title": "select 在选择前已经求值了什么",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "SelectEvaluationDemo",
      "reader_gain": "select 在选择前已经求值了什么",
      "inputs": "有副作用的 channel/发送值表达式、就绪分支",
      "process": "先按规范记录求值一次，再计算就绪集合并选择一个合法分支",
      "outputs": "未被选中的发送值表达式仍执行的日志",
      "teaching_boundary": "可复用 SelectReadinessDemo 的就绪模型；不模拟运行时随机序列、公平性或 default 优先级。",
      "placements": [
        {
          "chapter_id": "ch-011",
          "path": "books/go/articles/02_并发编程/Channel.md",
          "sections": [
            {
              "section": "select 选的是当前能做的动作",
              "line": 126,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-019",
          "path": "books/go/articles/03_运行时与底层原理/Go defer select timer 与 netpoller.md",
          "sections": [
            {
              "section": "select：先求值，再选择，不按书写顺序排队",
              "line": 80,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg07",
      "title": "速率、在途量与等待队列分别限制什么",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "ResourceQueueDemo",
      "reader_gain": "速率、在途量与等待队列分别限制什么",
      "inputs": "固定到达事件、工作耗时、并发槽位、队列上限、令牌补充",
      "process": "按虚拟时钟申请资源、排队、超时与归还，逐项开关速率和并发限制",
      "outputs": "在途数、排队数、拒绝数和资源泄漏位置",
      "teaching_boundary": "只有确定性事件模型，不生成真实吞吐、数据库池最佳大小或生产限流建议；初版只做单资源。",
      "placements": [
        {
          "chapter_id": "ch-013",
          "path": "books/go/articles/02_并发编程/Go 并发工具选型.md",
          "sections": [
            {
              "section": "限数量要同时看“提交者”会不会等",
              "line": 54,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "名额获取成功后，取消不会替你归还",
              "line": 181,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-015",
          "path": "books/go/articles/02_并发编程/Go 并发模式.md",
          "sections": [
            {
              "section": "限并发与限速：先分清名额代表什么",
              "line": 101,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-039",
          "path": "books/go/articles/06_Web与API/Go HTTP 中间件.md",
          "sections": [
            {
              "section": "限流先说清限制的是什么",
              "line": 129,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-047",
          "path": "books/go/articles/07_数据存储/Go 数据访问.md",
          "sections": [
            {
              "section": "DB 是池，Tx 才是一条事务",
              "line": 7,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "四个连接池参数，各管一件事",
              "line": 37,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "实际把池压到一条连接",
              "line": 52,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-075",
          "path": "books/go/articles/11_高并发与高可用/Go 稳定性与压测工具选型.md",
          "sections": [
            {
              "section": "ghz：gRPC 的方法描述、并发和连接是分开的",
              "line": 229,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-081",
          "path": "books/go/articles/11_高并发与高可用/稳定性手段.md",
          "sections": [
            {
              "section": "限流算法的差异，在“突发怎么办”上最明显",
              "line": 120,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "舱壁和负载卸除，让剩余工作有机会完成",
              "line": 158,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-082",
          "path": "books/go/articles/11_高并发与高可用/高并发手段.md",
          "sections": [
            {
              "section": "三种池，复用的是三种东西",
              "line": 22,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "连接池：复用昂贵连接，也把容量变成排队点",
              "line": 24,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "协程池：限制执行者，还要限制等待者",
              "line": 40,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-088",
          "path": "books/go/articles/12_安全/接口安全.md",
          "sections": [
            {
              "section": "限流与防刷：额度应该对应你要保护的资源",
              "line": 124,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-115",
          "path": "books/go/articles/16_系统设计/系统设计经典题目.md",
          "sections": [
            {
              "section": "5. 限流器：限制哪种资源，决定算法与故障策略",
              "line": 187,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg08",
      "title": "可达性与写屏障为什么需要一起看",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "ReachabilityDemo",
      "reader_gain": "可达性与写屏障为什么需要一起看",
      "inputs": "根、对象引用、非追踪整数地址、标记步骤和一次引用改动",
      "process": "逐边遍历、记录扫描颜色，并构造无屏障时漏标的教学反例",
      "outputs": "根可达集合、颜色与未追踪地址的区别",
      "teaching_boundary": "不执行 unsafe，不复刻某版 Go 写屏障或 Green Tea 调度，不估计真实停顿。",
      "placements": [
        {
          "chapter_id": "ch-003",
          "path": "books/go/articles/01_语言基础/Go 反射 unsafe cgo 与代码生成.md",
          "sections": [
            {
              "section": "unsafe 拿到地址之后，还欠哪些保证",
              "line": 177,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "`unsafedemo/main.go`",
              "line": 740,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "`unsafedemo/main_test.go`",
              "line": 775,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-021",
          "path": "books/go/articles/03_运行时与底层原理/Go 垃圾回收.md",
          "sections": [
            {
              "section": "垃圾是谁决定的：从根走得到，就先保留",
              "line": 7,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "三种颜色是在记录扫描进度",
              "line": 20,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "并发标记最难的地方：程序也在改指针",
              "line": 40,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg09",
      "title": "堆维护局部不变量，二分维护剩余候选",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "AlgorithmInvariantDemo",
      "reader_gain": "堆维护局部不变量，二分维护剩余候选",
      "inputs": "小数组、插入/弹出或 lower-bound 目标",
      "process": "两个分开的预设逐步修复堆或收缩半开区间",
      "outputs": "每一步比较、被排除区间和最终答案",
      "teaching_boundary": "初版只限堆与 lower bound，不由一个组件宣称覆盖整章算法；操作次数不是速度基准。",
      "placements": [
        {
          "chapter_id": "ch-037",
          "path": "books/go/articles/05_计算机基础/数据结构与算法.md",
          "sections": [
            {
              "section": "哈希表与堆：一个按键找，一个按优先级取",
              "line": 120,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "堆：只维护父子关系，就足够快速取极值",
              "line": 145,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "二分查找：维护“答案仍在这个区间里”",
              "line": 362,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg10",
      "title": "SQL 的重复行、NULL 和聚合会怎样改变结果",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "SqlRowsDemo",
      "reader_gain": "SQL 的重复行、NULL 和聚合会怎样改变结果",
      "inputs": "小表、重复键、NULL、连接种类和聚合选择",
      "process": "展示连接配对与补空行，再按三值逻辑过滤和分组",
      "outputs": "中间结果行数、保留/删除的具体行",
      "teaching_boundary": "使用有限关系算子，不执行任意 SQL；不模拟优化器、引擎扩展或所有 NULL 规则。",
      "placements": [
        {
          "chapter_id": "ch-051",
          "path": "books/go/articles/07_数据存储/SQL 基础.md",
          "sections": [
            {
              "section": "SQL 默认保留重复，NULL 又引入第三种判断结果",
              "line": 34,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "连接先决定行数，再谈取哪些列",
              "line": 52,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "聚合把多行收成一行，窗口保留每一行",
              "line": 128,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg11",
      "title": "同一组事务动作在不同快照下看到什么",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "TransactionTimelineDemo",
      "reader_gain": "同一组事务动作在不同快照下看到什么",
      "inputs": "两个事务的读写/提交顺序、显式快照与锁规则",
      "process": "推进版本可见性和冲突检查，重现不可重复读或写偏斜",
      "outputs": "各事务读到的版本与业务约束是否保持",
      "teaching_boundary": "每个预设贴清引擎和隔离契约；不能用四个通用开关冒充所有数据库实现。",
      "placements": [
        {
          "chapter_id": "ch-052",
          "path": "books/go/articles/07_数据存储/数据库事务.md",
          "sections": [
            {
              "section": "三种常见异常，要看谁在什么时刻提交",
              "line": 43,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "四个隔离级别，先看最低语义，再看具体引擎",
              "line": 54,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "没有幻读，为什么还可能把业务做错",
              "line": 78,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg12",
      "title": "联合索引区间之后，还有哪些取数成本",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "IndexLookupDemo",
      "reader_gain": "联合索引区间之后，还有哪些取数成本",
      "inputs": "有序键、叶页容量、返回列、残余谓词、可见性标记",
      "process": "从现有 IndexSearchDemo 的区间结果继续导航、取完整行或检查可见性",
      "outputs": "候选数量、页访问教学计数与必须补取的行",
      "teaching_boundary": "先做 B+ 树导航和覆盖/下推区别；skip scan 和统计估计为后续子预设，不输出真实 EXPLAIN 或毫秒。",
      "placements": [
        {
          "chapter_id": "ch-054",
          "path": "books/go/articles/07_数据存储/数据库索引.md",
          "sections": [
            {
              "section": "一棵树为什么能少读很多页",
              "line": 7,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "同样叫“主键”，InnoDB 和 PostgreSQL 存的东西不同",
              "line": 32,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "没有第一列条件，也不代表用不了联合索引",
              "line": 129,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg13",
      "title": "旧值回填、过期和刷新怎样发生竞争",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "CacheTimelineDemo",
      "reader_gain": "旧值回填、过期和刷新怎样发生竞争",
      "inputs": "数据库版本、缓存版本、软硬 TTL、读写/刷新事件",
      "process": "手动安排读旧值、更新库、删除、迟到回填与刷新失败",
      "outputs": "每个读者看到的值、缓存新鲜度及未修复窗口",
      "teaching_boundary": "区分库的真实过期契约；延迟双删不是证明，singleflight 只合并进程内重叠调用。",
      "placements": [
        {
          "chapter_id": "ch-055",
          "path": "books/go/articles/08_缓存/Go 缓存工具选型.md",
          "sections": [
            {
              "section": "LifeWindow 不是普通 Get 的严格过期屏障",
              "line": 167,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "过期和刷新是两个时间条件",
              "line": 213,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-058",
          "path": "books/go/articles/08_缓存/Redis 缓存进阶.md",
          "sections": [
            {
              "section": "写热：能不能把一个动作拆成多份",
              "line": 56,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only_anchor_not_final"
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          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-059",
          "path": "books/go/articles/08_缓存/缓存三大问题.md",
          "sections": [
            {
              "section": "逻辑过期：用旧值换等待时间",
              "line": 166,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-060",
          "path": "books/go/articles/08_缓存/缓存模式.md",
          "sections": [
            {
              "section": "Read-Through：集中读入口，不自动增加一致性",
              "line": 53,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "延迟双删：再清一次可能有用，但延迟不是锁",
              "line": 116,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg14",
      "title": "布隆过滤器怎样节省空间，又为何会误报",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "BloomFilterDemo",
      "reader_gain": "布隆过滤器怎样节省空间，又为何会误报",
      "inputs": "位数、公开的教学哈希、插入集合和查询",
      "process": "点亮对应位，逐项查验真阳性、真阴性、假阳性",
      "outputs": "位图与在本次集合上的查询结果",
      "teaching_boundary": "理论误报率须带独立均匀假设；不能用小样本频率保证线上效果，不支持无计数删除。",
      "placements": [
        {
          "chapter_id": "ch-037",
          "path": "books/go/articles/05_计算机基础/数据结构与算法.md",
          "sections": [
            {
              "section": "布隆过滤器：用一点误判，换紧凑的“不存在”判断",
              "line": 457,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-059",
          "path": "books/go/articles/08_缓存/缓存三大问题.md",
          "sections": [
            {
              "section": "布隆过滤器：便宜地回答“一定没有”",
              "line": 61,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "内存与误报率如何交换",
              "line": 88,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg15",
      "title": "在哪个故障窗口里会丢消息或重复业务",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "DeliveryWindowDemo",
      "reader_gain": "在哪个故障窗口里会丢消息或重复业务",
      "inputs": "业务提交、outbox、发送、ack/offset、幂等键与故障点",
      "process": "推进一条消息从业务记录到消费确认，允许在有限步骤后重启",
      "outputs": "未发/重发/已处理记录和一次业务效果的证据",
      "teaching_boundary": "不同 Broker/事务边界用独立预设；不宣称跨外部副作用 exactly-once；Kafka 确认条件需专门复核。",
      "placements": [
        {
          "chapter_id": "ch-044",
          "path": "books/go/articles/06_Web与API/WebSocket GraphQL 与 Webhook.md",
          "sections": [
            {
              "section": "Webhook：先可靠接住，再异步处理",
              "line": 163,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "webhook_test.go",
              "line": 277,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-061",
          "path": "books/go/articles/09_消息队列/Go 消息与工作流工具选型.md",
          "sections": [
            {
              "section": "Writer 的零值确认级别值得专门检查",
              "line": 83,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "amqp091-go：生产确认与消费 Ack 是两个动作",
              "line": 99,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-062",
          "path": "books/go/articles/09_消息队列/Kafka.md",
          "sections": [
            {
              "section": "副本数、ISR、确认条件分别回答三个问题",
              "line": 42,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-064",
          "path": "books/go/articles/09_消息队列/消息队列可靠性.md",
          "sections": [
            {
              "section": "生产端确认、持久化和副本要一起看",
              "line": 22,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "先做业务，再确认，仍然会重复",
              "line": 30,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "幂等要挡住重复的业务效果",
              "line": 60,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-065",
          "path": "books/go/articles/09_消息队列/消息队列应用模式.md",
          "sections": [
            {
              "section": "Outbox：把“稍后要发什么”写进同一个本地事务",
              "line": 37,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-066",
          "path": "books/go/articles/09_消息队列/消息队列核心概念.md",
          "sections": [
            {
              "section": "消费组：分担一份工作，还是各自看一份日志",
              "line": 62,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-069",
          "path": "books/go/articles/10_微服务与分布式/分布式事务.md",
          "sections": [
            {
              "section": "出站可靠，不等于副作用只发生一次",
              "line": 143,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-080",
          "path": "books/go/articles/11_高并发与高可用/幂等设计.md",
          "sections": [
            {
              "section": "schema.sql",
              "line": 393,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-112",
          "path": "books/go/articles/16_系统设计/架构演进.md",
          "sections": [
            {
              "section": "schema 演进：老事件不会随新代码一起消失",
              "line": 216,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg16",
      "title": "锁租约过期后，旧持有者为什么还能造成损害",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "LeaseFencingDemo",
      "reader_gain": "锁租约过期后，旧持有者为什么还能造成损害",
      "inputs": "租约期限、持有者 token、迟到释放与下游 fencing 值",
      "process": "推进 A 过期、B 获锁、A 恢复，分别比较裸 DEL、比 token 删除、下游拒旧写",
      "outputs": "新锁是否被误删与旧请求是否仍能写入",
      "teaching_boundary": "正确释放不等于保护业务副作用；fencing 需下游原子校验，不模拟真实 Redis 可用性。",
      "placements": [
        {
          "chapter_id": "ch-058",
          "path": "books/go/articles/08_缓存/Redis 缓存进阶.md",
          "sections": [
            {
              "section": "释放必须比较令牌，而且比较与删除必须原子",
              "line": 115,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "Fencing：让资源拒绝上一任持有者",
              "line": 173,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "with-redis.sh",
              "line": 237,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-070",
          "path": "books/go/articles/10_微服务与分布式/分布式基础组件.md",
          "sections": [
            {
              "section": "Redis、etcd、ZooKeeper 的锁有什么差别",
              "line": 53,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "Redis：value 防误删，TTL 防永久占用",
              "line": 61,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg17",
      "title": "多数副本为什么还不够证明旧任期日志能提交",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "RaftCommitDemo",
      "reader_gain": "多数副本为什么还不够证明旧任期日志能提交",
      "inputs": "固定三/五节点日志、任期、候选人和可送达消息",
      "process": "有限脚本检查投票日志新旧、匹配前缀与当前任期提交条件",
      "outputs": "合法/拒绝的选票和已提交索引",
      "teaching_boundary": "只做经测试的 Raft 小历史；不把动画称完整共识证明，不混用 Paxos/ZAB 规则。",
      "placements": [
        {
          "chapter_id": "ch-068",
          "path": "books/go/articles/10_微服务与分布式/共识算法.md",
          "sections": [
            {
              "section": "Raft 选主：选票带着任期，也带着历史约束",
              "line": 49,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "Raft 复制：先确认共同前缀，再补尾部",
              "line": 95,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "为什么旧任期日志在多数节点上，也不能直接按票数提交？",
              "line": 117,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg18",
      "title": "用调用与返回时间判断一段一致性历史",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "ConsistencyHistoryDemo",
      "reader_gain": "用调用与返回时间判断一段一致性历史",
      "inputs": "有限读写历史、调用/返回区间和返回值",
      "process": "枚举符合实时先后约束的顺序，检查是否存在合法寄存器解释",
      "outputs": "一个有效见证或找不到见证的结果",
      "teaching_boundary": "仅限小规模单寄存器；找不到某个采样顺序不是不可线性化证明，不模拟 FLP 或 CAP 排名。",
      "placements": [
        {
          "chapter_id": "ch-071",
          "path": "books/go/articles/10_微服务与分布式/分布式理论基础.md",
          "sections": [
            {
              "section": "一致性模型：约束的是“别人会看到什么”",
              "line": 23,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "写已经成功，另一个人还能读到旧值吗？",
              "line": 37,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg19",
      "title": "分片归属变化与数据搬完是两步",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "ShardMovementDemo",
      "reader_gain": "分片归属变化与数据搬完是两步",
      "inputs": "键集合、节点或槽归属、虚拟节点和迁移进度",
      "process": "分别计算取模/固定教学哈希归属，移动数据并拒绝旧 generation",
      "outputs": "改属键数、尚未搬完的键和旧路由访问",
      "teaching_boundary": "Redis 槽与一致性哈希分开预设；路由均匀不等于负载均匀，也不证明无损迁移。",
      "placements": [
        {
          "chapter_id": "ch-053",
          "path": "books/go/articles/07_数据存储/数据库扩展性.md",
          "sections": [
            {
              "section": "分表、分区、分库分别搬走了什么",
              "line": 49,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "分片数从四变五，取模会搬走多少数据",
              "line": 64,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "数据迁移要先解决“谁的新旧顺序说了算”",
              "line": 115,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-056",
          "path": "books/go/articles/08_缓存/Redis 原理.md",
          "sections": [
            {
              "section": "Cluster 用 16384 个哈希槽分片",
              "line": 140,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-073",
          "path": "books/go/articles/10_微服务与分布式/数据分布.md",
          "sections": [
            {
              "section": "先分清分片、副本和路由",
              "line": 7,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "分片键选错，后面的路由算法救不了查询",
              "line": 31,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "一致性哈希：成员变化时，尽量少改键的位置",
              "line": 48,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg20",
      "title": "配置最终值来自哪一层，旧快照为何不能倒灌",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "ConfigurationTraceDemo",
      "reader_gain": "配置最终值来自哪一层，旧快照为何不能倒灌",
      "inputs": "默认值、文件、环境/命令行覆盖顺序及快照版本",
      "process": "逐项合并、按既定策略拒绝类型错误，比较 revision 后原子应用",
      "outputs": "最终值的来源链和被拒绝的旧/坏配置",
      "teaching_boundary": "Go 配置例与 nanoGPT exec 配置使用不同预设；不执行用户代码，也不宣称 schema 校验足以安全发布。",
      "placements": [
        {
          "chapter_id": "ch-032",
          "path": "books/go/articles/04_工程化/Go 配置管理.md",
          "sections": [
            {
              "section": "优先级必须能画出来，也能测出来",
              "line": 21,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-074",
          "path": "books/go/articles/10_微服务与分布式/服务治理.md",
          "sections": [
            {
              "section": "一份端点列表为什么会突然退回旧版本？",
              "line": 38,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "配置中心：发布成功以后，还差“安全生效”",
              "line": 122,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-185",
          "path": "books/llm/nanogpt/chapters/03_configuration.md",
          "sections": [
            {
              "section": "3.2 命令行的类型检查到底检查了什么",
              "line": 17,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg21",
      "title": "发布时新副本就绪和旧请求收尾怎样衔接",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "RolloutLifecycleDemo",
      "reader_gain": "发布时新副本就绪和旧请求收尾怎样衔接",
      "inputs": "期望副本、surge/unavailable、readiness、在途请求及宽限期",
      "process": "分别推进创建、就绪、摘流、排空与退出",
      "outputs": "可服务副本和仍未收尾的连接/任务",
      "teaching_boundary": "只算明示规则；不声称 K8s 一定按固定时刻调度，Shutdown 不替你收 WebSocket 或后台任务。",
      "placements": [
        {
          "chapter_id": "ch-076",
          "path": "books/go/articles/11_高并发与高可用/发布安全.md",
          "sections": [
            {
              "section": "Go 的 Shutdown 做什么，没做什么",
              "line": 45,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-105",
          "path": "books/go/articles/15_部署与云原生/Go 在容器中.md",
          "sections": [
            {
              "section": "HTTP 之外的工作不能交给 Shutdown 猜",
              "line": 170,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-106",
          "path": "books/go/articles/15_部署与云原生/Kubernetes.md",
          "sections": [
            {
              "section": "三种探针，失败后的动作完全不同",
              "line": 111,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "滚动更新先保留多少旧副本，再增加多少新副本",
              "line": 171,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg22",
      "title": "总体 SLI、错误预算和燃烧率先统一分母",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "SliBudgetDemo",
      "reader_gain": "总体 SLI、错误预算和燃烧率先统一分母",
      "inputs": "各组 good/total、SLO、窗口及缺测标记",
      "process": "先合并计数再求比例，对照简单平均，计算坏事件预算和 burn rate",
      "outputs": "精确比例、剩余预算、无数据与零分母状态",
      "teaching_boundary": "请求型预算不可直接换停机分钟；p99 不可平均；不替用户决定 SLO/SLA 合同。",
      "placements": [
        {
          "chapter_id": "ch-077",
          "path": "books/go/articles/11_高并发与高可用/可靠性度量.md",
          "sections": [
            {
              "section": "没有流量不等于百分之百成功",
              "line": 49,
              "body_reviewed_this_round": true,
              "review_extent": "full_chapter_text"
            },
            {
              "section": "错误预算是容许的坏事件量",
              "line": 77,
              "body_reviewed_this_round": true,
              "review_extent": "full_chapter_text"
            },
            {
              "section": "Burn rate 把严重程度和持续时间连起来",
              "line": 106,
              "body_reviewed_this_round": true,
              "review_extent": "full_chapter_text"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-092",
          "path": "books/go/articles/13_可观测性/可观测性三大支柱.md",
          "sections": [
            {
              "section": "指标：类型决定能对它做什么运算",
              "line": 72,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-093",
          "path": "books/go/articles/13_可观测性/告警设计.md",
          "sections": [
            {
              "section": "SLO 告警：关注错误预算消耗速度",
              "line": 49,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
            {
              "section": "零流量和没有数据，都不是“服务正常”",
              "line": 106,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg23",
      "title": "闭环压测为何会漏掉排队最慢的时刻",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "ArrivalClockDemo",
      "reader_gain": "闭环压测为何会漏掉排队最慢的时刻",
      "inputs": "服务时间序列、计划到达时刻、客户端数量",
      "process": "在同一耗时序列上对比开环与闭环发请求、排队和完成",
      "outputs": "每请求等待/响应及两个模型的分母",
      "teaching_boundary": "确定性虚拟队列解释协调遗漏，不以结果预测真实机器容量。",
      "placements": [
        {
          "chapter_id": "ch-079",
          "path": "books/go/articles/11_高并发与高可用/容量与弹性.md",
          "sections": [
            {
              "section": "开环与闭环，差别在下一次请求由谁决定",
              "line": 22,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "协调遗漏为什么会让慢服务看起来没那么慢",
              "line": 39,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg24",
      "title": "请求、字节、保留期和平均等待怎样对账",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "CapacityUnitsDemo",
      "reader_gain": "请求、字节、保留期和平均等待怎样对账",
      "inputs": "活跃人数、操作频率、峰均比、记录字节、保存时长",
      "process": "明确单位并逐项累计请求、存储、副本与平均在途量",
      "outputs": "可复算的量纲和对敏感假设的差分",
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              "section": "容量估算：先看哪一维可能限制方案",
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      ],
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        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg25",
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      "priority": "P2",
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      "reader_gain": "授权为什么必须同时检查主体、动作和对象",
      "inputs": "合成用户/租户、对象归属、角色关系及明确规则",
      "process": "用有限 RBAC/ABAC/ReBAC 例子逐条件判定，并撤销一条关系",
      "outputs": "允许/拒绝的理由和越租户反例",
      "teaching_boundary": "仅离线合成数据；不变更真实权限，不给通用安全认证，不将身份认证等同授权。",
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        {
          "chapter_id": "ch-087",
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              "section": "一个授权判断至少有四个输入",
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      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
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      "id": "rg26",
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      "status": "remaining_candidate",
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      "reader_gain": "点击深度与 URL 长短为何无关",
      "inputs": "页面与真实 href 有向边、分页入口",
      "process": "从指定入口做可达性与最短点击路径遍历",
      "outputs": "孤立页、可达页、路径深度",
      "teaching_boundary": "可达不等于被搜索引擎发现或索引；不把图中心性当排名权重。",
      "placements": [
        {
          "chapter_id": "ch-117",
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        {
          "chapter_id": "ch-124",
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              "section": "层级深度与可用性",
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              "line": 91,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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        {
          "chapter_id": "ch-127",
          "path": "books/seo/book/chapters/12_site_type_playbooks.md",
          "sections": [
            {
              "section": "分页与加载更多",
              "line": 33,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg27",
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      "priority": "P2",
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      "reader_gain": "robots 规则如何得出一个有效抓取许可",
      "inputs": "有限规则集、user-agent 与 URL 路径",
      "process": "按指定公开规则解释分组、匹配长度和允许/禁止冲突",
      "outputs": "匹配的规则与许可理由",
      "teaching_boundary": "现有 IndexingSignalsDemo 从已解析许可开始，不能覆盖此步骤；版本、编码和网络错误要分开，不承诺收录。",
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        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg28",
      "title": "重定向、sitemap 和语言版本关系是否自洽",
      "status": "remaining_candidate",
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      "priority": "P2",
      "proposed_component": "UrlRelationsDemo",
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      "inputs": "小 URL 集合、每跳状态、canonical/hreflang/sitemap 边",
      "process": "三个独立预设检查循环/失效目标、允许集合、互相返回与自引用",
      "outputs": "有证据的结构冲突及受影响 URL",
      "teaching_boundary": "只检查公布的结构规则，不判断页面独立价值、真实规范版本或搜索展示；三种预设不得互相代替。",
      "placements": [
        {
          "chapter_id": "ch-128",
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              "line": 87,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
            },
            {
              "section": "13.5 站点地图：把目录写成可维护的数据产品",
              "line": 105,
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              "review_extent": "heading_located_body_pending"
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              "section": "13.6 HTTP 状态码要表达真实业务状态",
              "line": 129,
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              "review_extent": "heading_located_body_pending"
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          ],
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        },
        {
          "chapter_id": "ch-131",
          "path": "books/seo/book/chapters/16_audit_migration_incidents.md",
          "sections": [
            {
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              "review_extent": "heading_located_body_pending"
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              "line": 108,
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        },
        {
          "chapter_id": "ch-132",
          "path": "books/seo/book/chapters/17_international_seo.md",
          "sections": [
            {
              "section": "17.5 hreflang：一个页面家族的关系声明",
              "line": 55,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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              "section": "17.6 canonical 和 hreflang 不应互相打架",
              "line": 74,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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            {
              "section": "17.10 国际站的迁移与衡量",
              "line": 120,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
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          "chapter_id": "ch-135",
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          "sections": [
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              "section": "20.9 修复断链，比追逐更多数字更具体",
              "line": 101,
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              "review_extent": "excerpt_only"
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          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
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          "chapter_id": "ch-146",
          "path": "books/seo/ai-workflow/docs/05_自动建站与收录.md",
          "sections": [
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              "section": "5.11 国际 SEO 先确认是否真有那个版本",
              "line": 132,
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              "review_extent": "excerpt_only"
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          "placement_state": "proposed_not_embedded",
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        }
      ],
      "acceptance_contract": [
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        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg29",
      "title": "源码、渲染 DOM 与结构化数据说的是同一事实吗",
      "status": "remaining_candidate",
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      "priority": "P2",
      "proposed_component": "PageEvidenceDiffDemo",
      "reader_gain": "源码、渲染 DOM 与结构化数据说的是同一事实吗",
      "inputs": "预先提供的初始 HTML、渲染 DOM、资源状态与 JSON-LD",
      "process": "选择同一检查点，对照正文、链接和机器字段是否存在/一致",
      "outputs": "缺失或冲突的具体字段及证据层",
      "teaching_boundary": "离线固定快照，不执行外来脚本；语法合法不等于富结果资格，截图文字不等于可发现 href。",
      "placements": [
        {
          "chapter_id": "ch-117",
          "path": "books/seo/book/chapters/02_search_pipeline.md",
          "sections": [
            {
              "section": "2.4 渲染解释了浏览器与抓取结果为什么会不同",
              "line": 39,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-129",
          "path": "books/seo/book/chapters/14_rendering_experience.md",
          "sections": [
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              "section": "14.4 为 Go 工具站设计一份渲染约定",
              "line": 47,
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              "review_extent": "heading_located_body_pending"
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              "line": 112,
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              "review_extent": "excerpt_only"
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        },
        {
          "chapter_id": "ch-130",
          "path": "books/seo/book/chapters/15_structured_data.md",
          "sections": [
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              "section": "15.7 用同一份数据生成正文与标注",
              "line": 133,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          ],
          "placement_state": "proposed_not_embedded",
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        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg30",
      "title": "测量版本、分母与对照缺失会怎样改变结论",
      "status": "remaining_candidate",
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      "priority": "P2",
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      "inputs": "小型合成点击/展现/事件表、数据修订、时间范围及页面版本",
      "process": "先对齐口径再切片，对照混合总体与分组结果，标记缺测/未定稿",
      "outputs": "哪些描述可计算、哪些比较需要补证据",
      "teaching_boundary": "不将归因称因果，不自动从置信区间推出经营决策，不把 GSC 点击除 GA4 会话当精确漏斗。",
      "placements": [
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          "path": "books/seo/book/chapters/21_measurement_attribution.md",
          "sections": [
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              "section": "21.7 归因分配功劳 因果解释增量",
              "line": 69,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-137",
          "path": "books/seo/book/chapters/22_experiments_diagnostics_operations.md",
          "sections": [
            {
              "section": "22.4 统计结果怎样解释才适合决策",
              "line": 39,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-141",
          "path": "books/seo/book/chapters/26_ai_for_seo_workflows.md",
          "sections": [
            {
              "section": "26.10 GSC、GA4与报告：先把数字算对，再让模型解释",
              "line": 236,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-142",
          "path": "books/seo/ai-workflow/docs/01_从案例到可验证假设.md",
          "sections": [
            {
              "section": "时长有用，但必须知道用户在做什么",
              "line": 17,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
          ],
          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-147",
          "path": "books/seo/ai-workflow/docs/06_AI编排与接口接入.md",
          "sections": [
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              "section": "6.6 GSC、GA4 与收入数据不能揉成一列“表现”",
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              "review_extent": "excerpt_only"
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        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
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      "id": "rg59",
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      "inputs": "父子首次取消原因、键值层级、AfterFunc 起停事件与 WithoutCancel 分支",
      "process": "分开的有限预设追踪首次 cause、向上查值、stop 成功或回调已开始，以及断开的取消传播",
      "outputs": "Err/Cause 差异、遮蔽来源与回调尚未完成的状态",
      "teaching_boundary": "不是扩 ContextTreeDemo 的 deadline 就自动覆盖；不把可变 Value 当线程安全，不把 stop=false 当回调已完成。",
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              "section": "两个扩展入口，用前先看清谁负责善后",
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        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
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      "id": "rg60",
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      "status": "remaining_candidate",
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      "reader_gain": "Once 执行一次，不代表成功一次",
      "inputs": "普通 Once/OnceValue、首次正常或 panic、后续调用",
      "process": "按明确 API 契约推进首次调用与重复调用",
      "outputs": "是否重试、返回值/重复 panic 的差别",
      "teaching_boundary": "不从一次执行推出业务成功，不模拟线程调度或保证任意重试安全。",
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        {
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      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
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      "id": "rg61",
      "title": "筛选维度的组合数与允许发布集合分开",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "FacetCombinationDemo",
      "reader_gain": "筛选维度的组合数与允许发布集合分开",
      "inputs": "少量筛选维度、可组合值、排除条件与允许发布清单",
      "process": "枚举笛卡尔积，再逐条应用有效组合约束和 URL 规范化",
      "outputs": "候选 URL、重复项与明确拒绝原因",
      "teaching_boundary": "集合数量不是抓取预算或流量预测；生成资格不等于页面独立价值，更不自动授权发布。",
      "placements": [
        {
          "chapter_id": "ch-123",
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              "line": 43,
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              "review_extent": "excerpt_only"
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              "line": 63,
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      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg62",
      "title": "线上已修复与搜索系统已处理是两个时间事实",
      "status": "remaining_candidate",
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      "priority": "P2",
      "proposed_component": "SearchEvidenceTimelineDemo",
      "reader_gain": "线上已修复与搜索系统已处理是两个时间事实",
      "inputs": "发布/修复时刻、最近抓取快照、实时测试和索引记录",
      "process": "把证据按观测时刻与所反映版本分层，改变一次修复或再抓取事件",
      "outputs": "哪些结论已被观察、哪些仍未知",
      "teaching_boundary": "不模拟真实搜索排队时延、排名或保证恢复日期；时间相关不证明因果。",
      "placements": [
        {
          "chapter_id": "ch-117",
          "path": "books/seo/book/chapters/02_search_pipeline.md",
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              "line": 73,
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              "review_extent": "excerpt_only"
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        },
        {
          "chapter_id": "ch-128",
          "path": "books/seo/book/chapters/13_crawling_indexing.md",
          "sections": [
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              "section": "13.9 可复制的检查流程与验收口径",
              "line": 165,
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              "review_extent": "heading_located_body_pending"
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        },
        {
          "chapter_id": "ch-131",
          "path": "books/seo/book/chapters/16_audit_migration_incidents.md",
          "sections": [
            {
              "section": "一个完整的防火墙误拦案例",
              "line": 132,
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              "review_extent": "excerpt_only"
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            {
              "section": "一个参数爆炸案例",
              "line": 140,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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          "placement_state": "proposed_not_embedded",
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        },
        {
          "chapter_id": "ch-133",
          "path": "books/seo/book/chapters/18_search_engine_ecosystems.md",
          "sections": [
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              "section": "18.4 用一个 URL 建立完整的观察链条",
              "line": 33,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            },
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              "section": "18.11 原创案例：同一站点为什么在两个引擎表现不同",
              "line": 113,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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        },
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          "path": "books/seo/ai-workflow/docs/07_观测数据与反馈决策.md",
          "sections": [
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              "line": 47,
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              "review_extent": "excerpt_only"
            },
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              "section": "7.11 提交、抓取、索引、排名分别记录",
              "line": 165,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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        }
      ],
      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg63",
      "title": "AdamW 的历史矩和解耦衰减怎样改变一步更新",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "OptimizerStateDemo",
      "reader_gain": "AdamW 的历史矩和解耦衰减怎样改变一步更新",
      "inputs": "短梯度序列、学习率、beta1/beta2、epsilon 和衰减率",
      "process": "逐步累积一二阶矩、偏差校正，比较解耦 weight decay 与把 L2 加入梯度",
      "outputs": "每步状态、更新向量及相同权重不同历史的分歧",
      "teaching_boundary": "只验证公布的有限公式；不声称任意实现默认一致、训练收敛或 Muon 已覆盖。",
      "placements": [
        {
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          "path": "books/llm/zero-to-hero/chapters/20_把小GPT训练并采样出来.md",
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              "section": "20.2 AdamW 更新的是参数，不是输入编号",
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              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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        },
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          "path": "books/llm/zero-to-hero/chapters/27-optimization-and-ddp.md",
          "sections": [
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              "section": "27.1　AdamW 的状态比参数本身多",
              "line": 7,
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              "review_extent": "heading_located_body_pending"
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          ],
          "placement_state": "proposed_not_embedded",
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        },
        {
          "chapter_id": "ch-190",
          "path": "books/llm/nanogpt/chapters/08_training.md",
          "sections": [
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              "section": "8.2 优化器为什么分成两组",
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              "review_extent": "excerpt_only"
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          "path": "books/llm/llms-from-scratch/chapters/17-schedules-clipping-muon.md",
          "sections": [
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              "section": "17.8 两个优化器必须不重不漏地分参数",
              "line": 85,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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        }
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      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg64",
      "title": "FP16、BF16 的范围与缩放别混成一个精度开关",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P2",
      "proposed_component": "PrecisionRangeDemo",
      "reader_gain": "FP16、BF16 的范围与缩放别混成一个精度开关",
      "inputs": "有限标量、表示格式、loss scale 和可选溢出例",
      "process": "按明确舍入规则表示输入，对照指数范围与尾数间隔，再还原缩放梯度",
      "outputs": "舍入误差、溢出/下溢与不能恢复的信息",
      "teaching_boundary": "不是 GPU 实测、TF32 内核或完整 autocast 仿真；格式范围不等于模型训练稳定性。",
      "placements": [
        {
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          "path": "books/llm/zero-to-hero/chapters/26-efficient-training.md",
          "sections": [
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              "section": "26.2　少用一些有效位，换来什么",
              "line": 15,
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              "review_extent": "excerpt_only"
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        },
        {
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          "path": "books/llm/nanogpt/chapters/08_training.md",
          "sections": [
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              "section": "8.3 AMP 改计算精度，不等于把所有状态都减半",
              "line": 29,
              "body_reviewed_this_round": false,
              "review_extent": "heading_located_body_pending"
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          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-215",
          "path": "books/llm/llms-from-scratch/chapters/18-performance-devices.md",
          "sections": [
            {
              "section": "18.3 TF32、bfloat16 与 autocast 不是同一件事",
              "line": 21,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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          "placement_state": "proposed_not_embedded",
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      "acceptance_contract": [
        "固定一个可手算正确例、一个常见错误例和至少一个边界输入。",
        "改输入能改变过程与结果；重置可恢复同一初始状态。",
        "数值/集合与独立参考计算一致，拒绝非法输入，界面明确标示简化条件。",
        "只有对应模型、组件及浏览器验证完成并实际嵌入后，才能转为已覆盖。"
      ]
    },
    {
      "id": "rg65",
      "title": "滑窗把输入和下一 token 目标一起移一格",
      "status": "remaining_candidate",
      "implementation_mode": "new_or_extension",
      "priority": "P1",
      "proposed_component": "TokenWindowDemo",
      "reader_gain": "滑窗把输入和下一 token 目标一起移一格",
      "inputs": "有限 ID 数组、窗口长度/步长、文档边界和切分位置",
      "process": "逐格标出 X/Y 的原位置，移动起点并校验目标末格和切块余数",
      "outputs": "合法起点集合、错位反例及最后一窗",
      "teaching_boundary": "可借 TokenSupervisionDemo 的位置身份，但这组只补数据窗口；不模拟 memmap 性能、真实 tokenizer 或完整 Trainer 的内部 shift。",
      "placements": [
        {
          "chapter_id": "ch-155",
          "path": "books/llm/zero-to-hero/chapters/04_character_data.md",
          "sections": [
            {
              "section": "4.2 边界字符让长度也成为预测对象",
              "line": 15,
              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
            }
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          "placement_state": "proposed_not_embedded",
          "next_action": "完整阅读目标小节，核对现有组件输入和教学边界，再决定是否复用或实现。"
        },
        {
          "chapter_id": "ch-168",
          "path": "books/llm/zero-to-hero/chapters/17_字符级语言模型与训练任务.md",
          "sections": [
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              "section": "17.2 一段长度为 T 的输入，其实出了 T 道题",
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              "body_reviewed_this_round": true,
              "review_extent": "excerpt_only"
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      "book": "go",
      "path": "books/go/articles/01_语言基础/Go 类型系统.md",
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    {
      "id": "ch-024",
      "book": "go",
      "path": "books/go/articles/03_运行时与底层原理/逃逸分析.md",
      "title": "逃逸分析：为什么同一个指针，有时不分配堆内存",
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    {
      "id": "ch-025",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 代码质量.md",
      "title": "Go 代码质量：格式、静态检查、测试和审查各管一段",
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            "read_excerpt": "`go build` 成功。显式运行 `go vet ./...` 得到四条诊断：",
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            "section": "三份风格资料该怎么用",
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            "read_excerpt": "| 资料 | 适合查什么 | 不能如何使用 | | --- | --- | --- | | Effective Go | 命名、控制流、接口等传统 Go 写法 | 页面明确说它写于 2009 年，未覆盖所有新语言及生态变化，不能当作最新特性手册 | ",
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    {
      "id": "ch-026",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 依赖注入.md",
      "title": "Go 依赖注入：谁创建对象，谁把依赖交给它，谁负责收尾",
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            "read_excerpt": "图表示本例的创建和持有关系。Service 只依赖 Store；cache 是 App 持有的第二个模拟资源，用于演示清理顺序，没有伪装成已经接入真实缓存服务。所谓“组装入口”只是集中创建和连接对象的地方，常在 main 附近，不是一种需要安装的新组",
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    {
      "id": "ch-027",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 工程工具选型.md",
      "title": "Go 工程工具选型：沿着一个项目的重复劳动逐个选择",
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            "section": "日志先选契约，再比较 slog 与 zap",
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            "read_excerpt": "slog 是标准库 Logger/Handler 接口，自带 JSON 与文本输出；zap 提供类型字段 Logger、便利的 SugaredLogger，以及可组合的 Core/Encoder 等机制。两者都能输出结构化事件，团队已有生态和实际性能",
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            "section": "组装代码很多时看 Wire，但先看到归档状态",
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    {
      "id": "ch-028",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 构建与发布.md",
      "title": "Go 构建与发布：从一个二进制追到它的源码、参数和验证结果",
      "source_sha256": "1e9d9d548f6dd10742fa5146a49f2b528f960181ead03ee19bd0f949a40925da",
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            "section": "build tag 选择的是源码，不是运行时开关",
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            "paragraph_end_line": 70,
            "read_excerpt": "本例两个文件各实现 `flavor()`：默认文件顶部写 `//go:build !enterprise`，另一份写 `//go:build enterprise`。于是：",
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          },
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            "section": "可重现性要靠约束输入来检验",
            "heading_line": 145,
            "paragraph_start_line": 147,
            "paragraph_end_line": 147,
            "read_excerpt": "本例固定源码、工具链、目标、参数，构建 dist/app 和 dist/repeat；`cmp` 判断完全相同，SHA-256 为：",
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      },
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    },
    {
      "id": "ch-029",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 模块管理.md",
      "title": "Go 模块管理：弄清这次构建到底用了哪份代码",
      "source_sha256": "44c6d4bc1411f6e25ff6146e5bb26372d5f05d63bd75aa8f9ee84e3c04a04063",
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            "section": "go.mod 选依赖，go.sum 留校验依据",
            "heading_line": 20,
            "paragraph_start_line": 34,
            "paragraph_end_line": 34,
            "read_excerpt": "这里调用固定版本的 Unicode NFC 规范化 API，将 `e` 和组合重音规范化为合成字符；字节长度变化来自此输入的 UTF-8 编码，不能推广成“规范化一定缩短字符串”。[norm v0.28.0](https://pkg.go.dev/g",
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            "section": "私有模块：先决定请求该发给谁",
            "heading_line": 140,
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            "paragraph_end_line": 142,
            "read_excerpt": "`GOPROXY` 控制从代理还是版本控制系统取模块。逗号分隔时，前一个代理通常只有返回 404/410 才继续回退；竖线分隔允许在任意错误后继续。把任意错误都当成“再问公共服务”，可能让原本只应留在公司内部的模块路径外泄。[代理回退规则](http",
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    },
    {
      "id": "ch-030",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 测试.md",
      "title": "Go 测试：让一次失败告诉你该改哪里",
      "source_sha256": "f54c2f488595da7b602d2828afe2137cc7a259c2606342ae00d2aeac52dc79a0",
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            "section": "Helper 让报错回到调用处，Cleanup 让资源跟测试范围一起结束",
            "heading_line": 72,
            "paragraph_start_line": 83,
            "paragraph_end_line": 83,
            "read_excerpt": "`t.Helper()` 标记辅助函数，报告文件位置时跳过它。附录故意调用 `equalTotal(t, 500, 999)`，得到：",
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            "section": "基准测试：先说测的是什么，再看 ns/op",
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            "read_excerpt": "`b.Loop` 由 testing 管理迭代和计时，适合当前工具链；旧代码常见的 `for i := 0; i < b.N; i++` 仍要认识。本例在循环里只做一次固定输入的算术与校验，没有网络或数据库。[B.Loop](https://pkg.",
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    {
      "id": "ch-031",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 结构化日志.md",
      "title": "Go 结构化日志：让一次事件能查到，也别把秘密写进去",
      "source_sha256": "f33ff6c9127b6c9cb421c7435893d93b05b5461b4524669c2f5ed8898cdc43b3",
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            "section": "级别改变过滤，不会自动改变告警",
            "heading_line": 47,
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            "read_excerpt": "零值 LevelVar 的级别为 Info。第一条 Debug 被过滤；改级别后的 Debug 输出。本例完整程序最后一行为：",
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    {
      "id": "ch-032",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 配置管理.md",
      "title": "Go 配置管理：启动前，把来源、类型和错误处理清楚",
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            "heading_line": 21,
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            "paragraph_end_line": 33,
            "read_excerpt": "多个来源争夺同一字段时，后来的来源覆盖前面的值。单个来源内部的语法错误则不应被当成“没配置”：本例在环境变量写错时立即报错，即使后续命令行可能提供另一值。这也是需要明确的策略，不能只给一张箭头图就以为所有细节都有答案。",
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            "section": "敏感配置与普通配置要分开处理",
            "heading_line": 104,
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            "read_excerpt": "“环境变量没写进 Git”是好事，但它不天然保密：环境可能被诊断工具、错误转储、日志、容器配置或具备相应权限的进程看到。具体可见范围由系统权限和平台决定，不能笼统说任何进程都能读任何环境。[OWASP 的环境变量风险说明](https://cheat",
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    {
      "id": "ch-033",
      "book": "go",
      "path": "books/go/articles/04_工程化/Go 项目结构.md",
      "title": "Go 项目结构：让目录边界和依赖方向说同一件事",
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            "section": "三个包足以解释一个可工作的结构",
            "heading_line": 22,
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            "paragraph_end_line": 36,
            "read_excerpt": "- order 只知道订单数量与单价如何计算，不知道 HTTP。 - httpapi 把一次 HTTP 调用变成订单计算，再把结果写到响应。 - preview 组装 handler，并用标准库的 HTTP 测试工具发起一次进程内调用。",
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            "section": "循环依赖是具体的编译错误，也可能是责任混在一起的信号",
            "heading_line": 121,
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            "paragraph_end_line": 123,
            "read_excerpt": "Go 禁止包直接或间接导入自己。附录让 a 导入 b、b 再导入 a，实际得到：",
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    {
      "id": "ch-034",
      "book": "go",
      "path": "books/go/articles/04_工程化/设计原则.md",
      "title": "设计原则：用 Go 守住业务规则，再决定需要多少抽象",
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            "section": "Option 模式：让可选项可读，也把默认值和错误写清楚",
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    {
      "id": "ch-040",
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      "title": "Go Web 与 RPC 工具选型：先分清它们替你承担哪一层",
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    {
      "id": "ch-041",
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      "path": "books/go/articles/06_Web与API/Go 请求处理.md",
      "title": "Go 请求处理：把不可信输入变成明确结果",
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            "section": "omitempty 控制输出，不替你定义输入语义",
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            "read_excerpt": "本次结构体包含整数零值、指向零值的指针、nil 切片和零时间。代码中的两个时间字段只差一个标签：",
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            "section": "文件下载优先复用 ServeContent 的协议处理",
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    {
      "id": "ch-042",
      "book": "go",
      "path": "books/go/articles/06_Web与API/RESTful 设计.md",
      "title": "RESTful 设计：让调用方知道一次请求究竟做了什么",
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            "read_excerpt": "| 方法 | 常见用途 | 安全 | 幂等 | | --- | --- | --- | --- | | GET、HEAD | 读取表示或元信息 | 是 | 是 | | PUT | 用给定表示创建或替换目标资源 | 否 | 是 | | DELETE |",
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            "section": "版本管理：改变路径并不能自动兼容",
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            "paragraph_start_line": 197,
            "paragraph_end_line": 197,
            "read_excerpt": "兼容性看的是已有调用方能否继续正确工作。给响应加一个可选字段通常较容易兼容，但严格拒绝未知字段的客户端可能失败；增加枚举值也可能打破客户端的穷举分支。删除字段、改变单位、把整数改成字符串、收紧输入范围，风险更明确。",
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        ],
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    {
      "id": "ch-043",
      "book": "go",
      "path": "books/go/articles/06_Web与API/RPC 与 gRPC.md",
      "title": "RPC 与 gRPC：像调用函数一样使用，也要按网络请求处理",
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            "section": "四种调用模式，差别在两边何时结束发送",
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            "read_excerpt": "| 模式 | IDL 形状 | 调用方常用动作 | 适合场景 | | --- | --- | --- | --- | | 一元 | `Get(Item) returns (Item)` | 发一个请求，拿结果或错误 | 查询、命令 | | 服务端流 ",
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            "heading_line": 176,
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            "read_excerpt": "一元拦截器接收 Context、请求、方法信息与 next；流拦截器接收 ServerStream 和 next。它们可以做认证、日志、度量和 Context 注入，但两类要分别注册。只安装 UnaryInterceptor 不会自动保护 Strea",
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    {
      "id": "ch-044",
      "book": "go",
      "path": "books/go/articles/06_Web与API/WebSocket GraphQL 与 Webhook.md",
      "title": "WebSocket、GraphQL 与 Webhook：三种不同的问题，三条不同的链路",
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            "section": "心跳需要一直有人读",
            "heading_line": 54,
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            "read_excerpt": "WebSocket 有 Ping、Pong、Close 控制帧。Gorilla 的默认 Ping 处理器会回复 Pong，但控制消息处理发生在读消息的过程中。如果只写不读，即使没有业务消息需要接收，也可能无法及时处理心跳和关闭。[Gorilla 控制",
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            "read_excerpt": "Webhook 常是一份带事件 ID 的 HTTP POST。发送方可能因超时或 5xx 重试，同一事件可能到多次，也可能在后发生的事件之后才到。具体策略由提供方定义，不存在适用于所有 Webhook 的统一重试标准。例如 Stripe 明确要求处理",
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    {
      "id": "ch-045",
      "book": "go",
      "path": "books/go/articles/06_Web与API/net-http.md",
      "title": "net/http：把一个请求从接收到收尾讲清楚",
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            "heading_line": 56,
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            "read_excerpt": "| 场景 | 关闭责任 | 还需要注意什么 | | --- | --- | --- | | 服务端收到 `r.Body` | Server 会关闭；Handler 也可在适当位置提前关闭 | 先限制大小，通常先读完必要内容再写响应 | | 客户端拿到",
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            "section": "`Do` 成功以后，也可能超时",
            "heading_line": 158,
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    },
    {
      "id": "ch-046",
      "book": "go",
      "path": "books/go/articles/07_数据存储/Go 数据库工具选型.md",
      "title": "Go 数据库工具选型",
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            "section": "一个 slice 不会自动变成一串占位符",
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    {
      "id": "ch-047",
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            "section": "实际把池压到一条连接",
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            "read_excerpt": "测试先 SetMaxOpenConns(1)，再通过 `db.Conn` 借走唯一连接，然后发一个 20 毫秒期限的 ExecContext。等待超时后归还专用连接，再执行一次操作。完整测试检查每步错误，实际输出：",
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    {
      "id": "ch-048",
      "book": "go",
      "path": "books/go/articles/07_数据存储/MySQL.md",
      "title": "MySQL：沿着一次提交，认识 InnoDB、日志与复制",
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            "read_excerpt": "| 日志/记录 | 由谁管理 | 主要内容与用途 | 不能据此承诺什么 | | --- | --- | --- | --- | | redo | InnoDB | 重做页级或底层结构变化，让恢复追上已记录状态；可概括为偏物理的重做信息，但不是整页原样",
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    {
      "id": "ch-049",
      "book": "go",
      "path": "books/go/articles/07_数据存储/NoSQL 与专用存储.md",
      "title": "NoSQL 与专用存储",
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    {
      "id": "ch-050",
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      "path": "books/go/articles/07_数据存储/PostgreSQL.md",
      "title": "PostgreSQL：把版本清理、JSONB 与索引选对",
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            "read_excerpt": "本例每条范围是 `[g,g+10)`，查与 `[500,501)` 相交的记录：",
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    {
      "id": "ch-051",
      "book": "go",
      "path": "books/go/articles/07_数据存储/SQL 基础.md",
      "title": "SQL 基础：先确定一行代表什么，再写查询",
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            "section": "SQL 默认保留重复，NULL 又引入第三种判断结果",
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            "section": "盐、参数、摘要一起保存，秘密另有用途",
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            "section": "选择解码语义时，也是在选择协议",
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            "paragraph_end_line": 54,
            "read_excerpt": "本例使用 Go 1.27.2 的 `encoding/json/v2`，要求一个 JSON 值，并开启拒绝未知成员。v2 默认拒绝重复对象成员名；测试还覆盖大小写不匹配和尾随第二份 JSON。[json/v2](https://pkg.go.dev/",
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            "section": "限流与防刷：额度应该对应你要保护的资源",
            "heading_line": 124,
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            "read_excerpt": "只按 IP 限流，会让公司出口或运营商 NAT 后的正常用户互相影响，也可能被分布式来源绕过；只按账号限流，则挡不住未登录入口和大量新账号。应按接口成本组合全局、租户、账号、凭据、IP 与并发额度，不盲目信任客户端自报的用户或来源 IP。[OWASP",
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      "title": "Go 可观测性工具选型：先分清谁采集、谁保存、谁帮你定位问题",
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            "heading_line": 145,
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      "id": "ch-096",
      "book": "go",
      "path": "books/go/articles/14_性能与调试/Go trace.md",
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      "next_action": "逐节补读本轮未完整阅读的正文；对候选明确可调输入、独立算例、源码边界和具体落点。"
    }
  ]
}