docs: 完成 anime.js v4.3.6 源码深度解析文档与单页解析站

- .memory/source-analysis.md: 671 行 21 章节，带 file:line 证据覆盖所有模块
- index.html: 1166 行单页，左侧 scrollspy 目录 + 17 个深度章节
  · engine/clock/render/values 四大内核
  · Timer/Animation/Timeline 生命周期三层
  · composition 三态 + additive 叠加
  · stagger/animatable/scope/svg/text/waapi 能力模块
  · draggable/layout/scroll 三个 1000+ 行重武器
  · 15 招精彩设计合集 + 踩坑清单

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.memory/worklog.json

@@ -41,6 +41,13 @@
       "message": "auto-save 2026-04-23 23:19 (~2)",
       "hash": "6acf582",
       "files_changed": 2
+    },
+    {
+      "ts": "2026-04-23T23:24:58+08:00",
+      "type": "commit",
+      "message": "auto-save 2026-04-23 23:24 (~1)",
+      "hash": "188728f",
+      "files_changed": 1
     }
   ]
 }