docs(08-02): complete comment crawler plan

- Add 08-02-SUMMARY.md with execution details
- Update STATE.md with decisions and metrics
- Mark CONT-03 requirement complete

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.planning/REQUIREMENTS.md

@@ -18,7 +18,7 @@
 
 - [x] **CONT-01**: 爬取知乎问答 - 问题标题、问题描述、回答内容、元数据
 - [x] **CONT-02**: 爬取知乎专栏/文章 - 标题、正文、元数据
-- [ ] **CONT-03**: 爬取内容下的评论（可选开关）
+- [x] **CONT-03**: 爬取内容下的评论（可选开关）
 - [x] **CONT-04**: 提取作者信息、发布时间、点赞数等元数据
 
 ### 网络与反爬
@@ -117,7 +117,7 @@
 | AUTH-04 | Phase 7 | Complete |
 | CONT-01 | Phase 8 | Complete |
 | CONT-02 | Phase 8 | Complete |
-| CONT-03 | Phase 8 | Pending |
+| CONT-03 | Phase 8 | Complete |
 | CONT-04 | Phase 8 | Complete |
 | NET-01 | Phase 8 | Pending |
 | NET-02 | Phase 8 | Pending |

.planning/STATE.md

@@ -3,14 +3,14 @@ gsd_state_version: 1.0
 milestone: v1.2
 milestone_name: Zhihu Crawler
 status: completed
-stopped_at: Phase 08 context gathered
-last_updated: "2026-03-17T10:57:02.248Z"
+stopped_at: Completed 08-crawler-02-PLAN.md
+last_updated: "2026-03-17T13:59:35.901Z"
 last_activity: 2026-03-17 — Phase 07 Login Auth complete
 progress:
   total_phases: 9
   completed_phases: 7
-  total_plans: 21
-  completed_plans: 21
+  total_plans: 24
+  completed_plans: 23
   percent: 100
 ---
 
@@ -44,6 +44,8 @@ Progress: [██████████] 100% (v1.2 milestone - Phase 7 comple
 | 07-01 | 15min | 2 | 5 | 2026-03-17 |
 | 07-02 | 5min | 2 | 4 | 2026-03-17 |
 | 07-03 | 12min | 3 | 4 | 2026-03-17 |
+| Phase 08 P01 | 3min | 2 tasks | 8 files |
+| Phase 08-crawler P02 | 5min | 2 tasks | 3 files |
 
 ## Accumulated Context
 
@@ -71,6 +73,9 @@ v1.2 decisions:
 - 使用 tenacity Retrying 对象而非 @retry 装饰器支持可配置超时
 - 多个 canvas 选择器降级提高 QR 码检测鲁棒性
 - login CLI 命令支持三种模式：扫码登录、导入 Cookie、状态检查
+- [Phase 08-02]: Use Playwright request API for direct comment API calls instead of route interception
+- [Phase ?]: - [Phase 08-02]: Only fetch first-level comments (no nested replies)
+- [Phase ?]: - [Phase 08-02]: Use hot sorting (order=hot) for popular comments
 
 ### Blockers/Concerns
 
@@ -78,8 +83,8 @@ None.
 
 ## Session Continuity
 
-Last session: 2026-03-17T10:57:02.246Z
-Stopped at: Phase 08 context gathered
-Resume file: .planning/phases/08-crawler/08-CONTEXT.md
+Last session: 2026-03-17T13:59:35.900Z
+Stopped at: Completed 08-crawler-02-PLAN.md
+Resume file: None
 
 **Next step:** Continue with Phase 08 Crawler

.planning/phases/08-crawler/08-02-SUMMARY.md

@@ -0,0 +1,101 @@
+---
+phase: 08-crawler
+plan: 02
+subsystem: crawler
+tags: [playwright, pydantic, zhihu, comments, api-interception]
+
+requires:
+  - phase: 08-01
+    provides: ZhihuCrawler class + crawl_answer/crawl_article methods
+provides:
+  - crawl_comments() method for hot comment crawling
+  - CommentData, CommentsResult, CommentAuthor data models
+  - include_comments parameter in crawl_answer()
+affects: [08-03]
+
+tech-stack:
+  added: []
+  patterns:
+    - Playwright page.request.get() for direct API calls
+    - Hot comment sorting via order=hot parameter
+
+key-files:
+  created:
+    - tests/test_crawler/test_comment_crawler.py
+  modified:
+    - kb_workflow/crawler/models.py
+    - kb_workflow/crawler/zhihu_crawler.py
+    - kb_workflow/crawler/__init__.py
+
+key-decisions:
+  - Use Playwright request API for direct comment API calls instead of route interception
+  - Only fetch first-level comments (no nested replies)
+  - Use hot sorting (order=hot) for popular comments
+
+requirements-completed: [CONT-03]
+
+duration: 5min
+completed: 2026-03-17
+---
+
+# Phase 08 Plan 02: Comment Crawler Summary
+
+**Comment crawling with hot sorting via Playwright request API, supporting optional comment fetching in crawl_answer()**
+
+## Performance
+
+- **Duration:** 5 min
+- **Started:** 2026-03-17T13:52:37Z
+- **Completed:** 2026-03-17T13:57:00Z
+- **Tasks:** 2
+- **Files modified:** 3
+
+## Accomplishments
+
+- CommentData, CommentAuthor, CommentsResult data models for structured comment data
+- crawl_comments() method using hot sorting API (order=hot)
+- include_comments parameter in crawl_answer() for optional comment fetching
+- 6 new tests for comment crawling functionality
+
+## Task Commits
+
+Each task was committed atomically:
+
+1. **Task 1: Add CommentData models** - `b1f5792` (feat)
+2. **Task 2: Implement crawl_comments method** - `8cc4696` (test), `f41e75a` (feat)
+
+## Files Created/Modified
+
+- `kb_workflow/crawler/models.py` - Added CommentAuthor, CommentData, CommentsResult models; updated CrawlResult with comments field
+- `kb_workflow/crawler/zhihu_crawler.py` - Added crawl_comments() method and COMMENT_API_TEMPLATE; updated crawl_answer() with include_comments parameter
+- `kb_workflow/crawler/__init__.py` - Exported CommentAuthor, CommentData, CommentsResult
+- `tests/test_crawler/test_comment_crawler.py` - 6 tests for comment crawling
+
+## Decisions Made
+
+1. **Direct API calls vs route interception:** Used Playwright's page.request.get() for comment API instead of route interception, as comments are fetched via a separate API call after the main content is loaded
+2. **First-level comments only:** Only fetch first-level comments to keep the feature simple; child_count is recorded but replies are not expanded
+3. **Hot sorting:** Always use order=hot parameter to get the most popular comments
+
+## Deviations from Plan
+
+None - plan executed exactly as written.
+
+## Issues Encountered
+
+- Test 6 (test_include_comments_in_crawl_answer) needed adjustment - the original test tried to patch a non-existent `_crawl_answer_internal` method. Fixed by properly mocking the interceptor and browser components.
+
+## User Setup Required
+
+None - no external service configuration required.
+
+## Next Phase Readiness
+
+- Comment crawling ready for integration into content pipeline
+- Phase 08-03 can use crawl_comments for full content extraction with optional comments
+
+---
+*Phase: 08-crawler*
+*Completed: 2026-03-17*
+
+## Self-Check: PASSED