docs: and skills

bin/.gitignore

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+# Compiled class files
+*.class
+target/
+out/
+
+# Log files
+*.log
+logs/
+
+# IDE files
+.idea/
+*.iml
+*.iws
+*.ipr
+.vscode/
+.classpath
+.project
+.settings/
+
+# OS files
+.DS_Store
+Thumbs.db
+
+# Package Files
+*.jar
+*.war
+*.nar
+*.ear
+*.zip
+*.tar.gz
+*.rar
+
+# Spring Boot
+spring-boot-devtools.properties
+
+# Environment variables
+.env
+.env.local
+
+# Database
+*.db
+*.sqlite
+
+# Test coverage
+.coverage
+htmlcov/
+coverage/
+
+# Maven
+.mvn/
+mvnw
+mvnw.cmd
+
+# Node.js / Frontend
+frontend/node_modules/
+frontend/dist/
+frontend/build/
+frontend/.pnpm-store/
+frontend/**/.turbo/
+frontend/**/.next/
+*.tsbuildinfo
+.pnpm-debug.log
+
+# Git worktrees
+.worktrees/