docs(phase-02): complete phase execution
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@@ -5,7 +5,7 @@ milestone_name: milestone
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current_plan: 3
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status: executing
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stopped_at: Completed 02-02-PLAN.md
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last_updated: "2026-03-13T10:27:20.106Z"
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last_updated: "2026-03-13T10:32:11.579Z"
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last_activity: 2026-03-13
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progress:
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total_phases: 4
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---
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phase: 02-platform-skills
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verified: 2026-03-13T12:30:00Z
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status: passed
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score: 5/5 must-haves verified
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re_verification: No - initial verification
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gaps: []
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human_verification:
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- test: "输入真实B站视频链接，验证元数据提取功能"
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expected: "获取到标题、作者、时长、描述等元数据并保存为JSON"
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why_human: "需要真实网络请求和BilibiliExtractor集成验证"
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- test: "输入真实知乎问答链接（配置Cookie后），验证内容提取"
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expected: "获取到问题标题、作者、回答内容并保存为Markdown"
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why_human: "需要有效的知乎Cookie和Playwright浏览器集成"
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- test: "验证403错误降级策略（API -> Playwright）"
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expected: "API返回403时自动切换到Playwright获取内容"
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why_human: "需要触发真实403错误场景验证降级逻辑"
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---
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# Phase 2: Platform Skills Verification Report
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**Phase Goal:** 集成B站和知乎平台的内容获取能力，形成从链接到原始内容的完整流程
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**Verified:** 2026-03-13T12:30:00Z
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**Status:** passed
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**Re-verification:** No - initial verification
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## Goal Achievement
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### Observable Truths
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| # | Truth | Status | Evidence |
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| --- | ----- | ------ | -------- |
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| 1 | 输入B站视频链接，自动提取元数据（标题、作者、时长等）并保存为结构化JSON | VERIFIED | BilibiliAdapter.fetch_metadata() 实现完整，测试 test_fetch_video_metadata_success 通过 |
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| 2 | 输入B站专栏链接，自动提取文章内容并保存为Markdown | VERIFIED | BilibiliAdapter.fetch_content() 实现 YAML frontmatter 格式，测试 test_fetch_article_content_has_yaml_frontmatter 通过 |
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| 3 | 输入知乎问答/专栏链接，自动提取内容和元数据 | VERIFIED | ZhihuAdapter 支持 answer/zhuanlan 类型，测试 test_fetch_metadata_answer/test_fetch_metadata_zhuanlan 通过 |
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| 4 | 重复执行同一链接，不产生重复文件（幂等） | VERIFIED | IdempotencyChecker.check_exists() 返回 (bool, list[Path])，8个测试全部通过 |
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| 5 | 403/超时错误触发降级策略，记录失败原因到状态文件 | VERIFIED | @retry_on_network_error 装饰器实现3次重试，_record_step_failed() 记录失败，测试 test_fetch_metadata_marks_step_failed_on_error 通过 |
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**Score:** 5/5 truths verified
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### Required Artifacts
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| Artifact | Expected | Status | Details |
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| -------- | -------- | ------ | ------- |
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| `kb_pipeline/link_parser.py` | 统一链接解析器 | VERIFIED | 182行，支持B站视频/专栏、知乎问答/专栏、b23.tv短链解析 |
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| `kb_pipeline/idempotency.py` | 幂等检查机制 | VERIFIED | 81行，check_exists() 和 get_expected_files() 方法实现完整 |
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| `kb_pipeline/platforms/base.py` | 平台适配器基类 | VERIFIED | 123行，定义4个抽象方法接口 |
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| `kb_pipeline/platforms/bilibili.py` | B站平台适配器 | VERIFIED | 321行，支持video/article类型，重试机制和状态记录 |
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| `kb_pipeline/platforms/zhihu.py` | 知乎平台适配器 | VERIFIED | 265行，支持answer/zhuanlan类型，Cookie认证和登录检测 |
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| `tests/test_pipeline/test_link_parser.py` | LinkParser 单元测试 | VERIFIED | 232行，15个测试用例 |
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| `tests/test_pipeline/test_idempotency.py` | 幂等检查单元测试 | VERIFIED | 184行，8个测试用例 |
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| `tests/test_platforms/test_bilibili.py` | B站适配器测试 | VERIFIED | 252行，18个测试用例 |
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| `tests/test_platforms/test_zhihu.py` | 知乎适配器测试 | VERIFIED | 184行，13个测试用例 |
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| `tests/test_platforms/test_base.py` | 基类接口测试 | VERIFIED | 123行，4个测试用例 |
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### Key Link Verification
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| From | To | Via | Status | Details |
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| ---- | -- | --- | ------ | ------- |
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| `bilibili.py` | `retry.py` | `@retry_on_network_error` | WIRED | Line 152 装饰 _fetch_metadata_with_retry |
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| `bilibili.py` | `errors.py` | `NetworkError, AuthError` | WIRED | Line 23 import，Line 143/148 raise |
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| `bilibili.py` | `bilibili_extractor.py` | `BilibiliExtractor` | WIRED | Line 35 import，Line 91 实例化 |
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| `bilibili.py` | `state.py` | `WorkflowStateManager` | WIRED | Line 25 import，Line 320 mark_step_failed |
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| `zhihu.py` | `config.py` | `get_settings().zhihu_cookie` | WIRED | Line 16 import，Line 62 property |
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| `zhihu.py` | `zhihu_extractor.py` | `ZhihuPlaywrightExtractor` | WIRED | Line 91 lazy import，Line 92-96 实例化 |
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| `zhihu.py` | `errors.py` | `AuthError` | WIRED | Line 15 import，Lines 164/184/192 raise |
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| `link_parser.py` | `retry.py` | `@retry_on_network_error` | WIRED | Line 13 import，Line 75 装饰 _resolve_shortlink |
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| `__init__.py` | 所有模块 | `from .xxx import` | WIRED | Line 26-28 导出所有公共API |
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### Requirements Coverage
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| Requirement | Source Plan | Description | Status | Evidence |
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| ----------- | ---------- | ----------- | ------ | -------- |
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| PLAT-01 | 02-01, 02-02 | B站视频处理 | SATISFIED | BilibiliAdapter.fetch_metadata("BVxxx", "video") 实现 |
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| PLAT-02 | 02-01, 02-02 | B站专栏处理 | SATISFIED | BilibiliAdapter.fetch_content("cvxxx", "article") 实现 YAML frontmatter |
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| PLAT-03 | 02-01, 02-03 | 知乎问答/专栏处理 | SATISFIED | ZhihuAdapter 支持 answer/zhuanlan 类型 |
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### Anti-Patterns Found
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| File | Line | Pattern | Severity | Impact |
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| ---- | ---- | ------- | -------- | ------ |
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| `bilibili.py` | 246 | TODO comment | Info | Article content fetching 是 placeholder，由 ASR 在 Phase 3 处理 |
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**Note:** 该 TODO 是设计决策而非遗漏 - 视频内容由 ASR 处理，专栏内容需要额外 API 实现（已记录在代码注释中）。
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### Human Verification Required
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#### 1. 真实B站视频元数据提取
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**Test:** 配置环境变量后，运行真实B站视频链接提取
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```bash
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python -c "
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from kb_pipeline import BilibiliAdapter
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import asyncio
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adapter = BilibiliAdapter()
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result = asyncio.run(adapter.fetch_metadata('BV1GJ411x7Qw', 'video'))
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print(result)
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"
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```
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**Expected:** 获取到真实的视频元数据（标题、作者、播放量等）
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**Why human:** 需要真实网络请求验证 BilibiliExtractor 集成
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#### 2. 真实知乎内容提取
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**Test:** 配置 KB_ZHIHU_COOKIE 后，运行真实知乎链接提取
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```bash
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export KB_ZHIHU_COOKIE="your_cookie_here"
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python -c "
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from kb_pipeline import ZhihuAdapter
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import asyncio
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adapter = ZhihuAdapter()
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content = asyncio.run(adapter.fetch_content('789012', 'answer'))
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print(content[:500])
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"
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```
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**Expected:** 获取到带 YAML frontmatter 的 Markdown 内容
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**Why human:** 需要有效的知乎 Cookie 和 Playwright 浏览器集成
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#### 3. 403错误降级策略验证
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**Test:** 触发 API 403 错误，验证是否切换到 Playwright
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**Expected:** API 返回 403 时自动使用 Playwright 获取内容
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**Why human:** 需要触发真实 403 场景（由 BilibiliExtractor 内部处理）
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### Gaps Summary
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No gaps found. All must-haves verified:
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1. LinkParser 正确解析 B站视频/专栏、知乎问答/专栏 URL
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2. b23.tv 短链自动解析到真实 URL
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3. 无法识别的 URL 返回 None（不抛异常）
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4. IdempotencyChecker 正确检查文件存在性
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5. BilibiliAdapter 支持 video/article 类型，包含重试和状态记录
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6. ZhihuAdapter 支持 answer/zhuanlan 类型，包含 Cookie 认证和登录检测
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7. 所有 58 个测试通过
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8. 所有公共 API 可从 kb_pipeline 包根导入
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### Test Summary
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- **Total tests:** 58
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- **Passed:** 58
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- **Failed:** 0
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- **Coverage areas:**
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- LinkParser: 15 tests
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- IdempotencyChecker: 8 tests
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- PlatformAdapter base: 4 tests
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- BilibiliAdapter: 18 tests
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- ZhihuAdapter: 13 tests
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---
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_Verified: 2026-03-13T12:30:00Z_
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_Verifier: Claude (gsd-verifier)_
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