Initial Unity 6 scaffold for Cat Kirby Adventures.

Add Phase A greybox vertical slice: third-person movement, forest path, checkpoints, story triggers, and light ability gate.

.gitignore

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+# Unity generated
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uilds/
+/[Ll]ogs/
+/[Uu]ser[Ss]ettings/
+/[Mm]emoryCaptures/
+/[Rr]ecordings/
+
+# IDE / generated projects
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pdb
+*.mdb
+*.opendb
+*.VC.db
+*.pidb.meta
+*.pdb.meta
+*.mdb.meta
+
+# OS
+.DS_Store
+Thumbs.db
+Desktop.ini
+
+# JetBrains / VS / VS Code
+.idea/
+.vs/
+.vscode/*
+!.vscode/extensions.json
+!.vscode/settings.json
+
+# Crash / dump
+sysinfo.txt
+crashlytics-build.properties
+mono_crash.*
+
+# Addressables / Burst
+/[Aa]ddressable[Aa]ssets[Dd]ata/*/*.bin*
+/[Aa]sset[Ss]tore[Tt]ools*
+
+# Builds / packages
+ExportedObj/
+.consulo/
+*.apk
+*.aab
+*.unitypackage
+*.app
+
+# Plastic / Collab
+*.private
+*.private.meta
+
+# Rider
+Plugins/Editor/JetBrains*
+
+# Gradle
+.gradle/
+
+# Scaffold helper (local)
+_scaffold_write.py
+_scaffold_*.py