chore: snapshot editor work and restore tests

Key points:\n- restore the tests tree removed by bc47e6e\n- capture current editor workspace, scene, and docs reshuffle changes\n- keep local cloud.nvdb resources ignored from this commit

tests/UI/Core/integration/input/README.md

@@ -0,0 +1,8 @@
+# Core Input Integration
+
+这个分类只放共享 XCUI 输入能力的手工验证场景。
+
+规则：
+- 一个场景目录对应一个独立 exe
+- 共享宿主层只放在 `integration/shared/`
+- 不允许把多个无关检查点塞进同一个 exe