init: init commit

.gitignore

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+# =============== #
+# Unity generated #
+# =============== #
+[Ll]ibrary/
+[Tt]emp/
+[Oo]bj/
+[Bb]uild/
+[Bb]uilds/
+[Ll]ogs/
+# UserSettings/
+MemoryCaptures/
+
+# 保留关键配置
+!/[Aa]ssets/**/*.meta
+!/[Pp]rojectSettings/**
+!/[Pp]ackages/manifest.json
+!/[Pp]ackages/packages-lock.json
+
+# Visual Studio / Rider
+.vs/
+.idea/
+*.csproj
+*.sln
+*.user
+*.userprefs
+*.pidb
+*.pdb
+*.mdb
+
+# OS generated
+.DS_Store
+Thumbs.db
+
+# Others
+*.unitypackage