docs: initialize engineering starter kit

.gitignore

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+# Operating system
+.DS_Store
+.AppleDouble
+.LSOverride
+Thumbs.db
+Desktop.ini
+
+# Editor and IDE local state
+.idea/
+.vscode/
+*.swp
+*.swo
+*~
+
+# Environment and secrets
+.env
+.env.*
+!.env.example
+!.env.template
+*.local
+*.secret
+*.secrets
+*.key
+*.pem
+*.p12
+*.pfx
+
+# Logs and diagnostics
+*.log
+logs/
+log/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# Dependency directories
+node_modules/
+
+# Build outputs
+dist/
+build/
+out/
+public/build/
+.cache/
+.parcel-cache/
+.turbo/
+.vite/
+.next/
+.nuxt/
+.svelte-kit/
+coverage/
+
+# .NET
+bin/
+obj/
+TestResults/
+*.user
+*.suo
+
+# Java and JVM
+target/
+.gradle/
+*.class
+*.jar
+*.war
+*.ear
+
+# Python
+__pycache__/
+*.py[cod]
+.python-version
+.venv/
+venv/
+env/
+.pytest_cache/
+.mypy_cache/
+.ruff_cache/
+.tox/
+.coverage
+htmlcov/
+
+# Go
+*.test
+*.out
+
+# Native and desktop builds
+*.o
+*.obj
+*.dll
+*.dylib
+*.so
+*.exe
+*.app
+*.dmg
+
+# Archives and generated packages
+*.zip
+*.tar
+*.tar.gz
+*.tgz
+*.rar
+*.7z
+
+# Databases and local storage
+*.sqlite
+*.sqlite3
+*.db
+*.db-journal
+
+# Temporary files
+tmp/
+temp/
+.tmp/
+.temp/
+
+# Tool-specific local files
+.eslintcache
+.stylelintcache
+.phpunit.result.cache