docs(13-05): complete Chinese sentence boundary detection plan

- Created SUMMARY.md for plan 13-05
- Updated STATE.md with progress and metrics
- Updated ROADMAP.md with plan progress
- Marked requirements SENT-01, SENT-02, SENT-03 as complete
- Duration: 2 minutes, 1 task completed

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

.planning/STATE.md

@@ -1,17 +1,17 @@
 ---
 gsd_state_version: 1.0
-milestone: v1.6
-milestone_name: 语义分段改进
+milestone: v1.4
+milestone_name: Zhihu Anti-Crawler
 status: executing
-stopped_at: Completed Phase 13 Plan 04
-last_updated: "2026-03-22T10:05:00.000Z"
-last_activity: 2026-03-22 — Completed Phase 13 Plan 04 (主题标题生成)
+stopped_at: Completed 13-05 中文句边界检测
+last_updated: "2026-03-21T16:26:15.430Z"
+last_activity: 2026-03-22 — Phase 13 plan created (7 plans)
 progress:
   total_phases: 15
-  completed_phases: 12
+  completed_phases: 10
   total_plans: 38
-  completed_plans: 31
-  percent: 82
+  completed_plans: 32
+  percent: 0
 ---
 
 # Project State
@@ -113,12 +113,13 @@ None.
 | Phase | Plan | Duration | Tasks | Files | Date |
 |-------|------|----------|-------|-------|------|
 | 13 | 04 | 140s (2min) | 1 | 2 | 2026-03-22 |
+| Phase 13 P05 | 2 | 1 tasks | 2 files |
 
 ## Session Continuity
 
-Last session: 2026-03-22T10:00:00.000Z
-Stopped at: Completed Phase 13 Plan 04 - 主题标题生成
-Resume file: .planning/phases/13-llm/13-04-SUMMARY.md
+Last session: 2026-03-21T16:26:15.429Z
+Stopped at: Completed 13-05 中文句边界检测
+Resume file: None
 
 **Next step:** Continue with Phase 13 remaining plans (01-03, 05-07)