Initial scaffold: FastAPI backend + Vue 3 frontend + Docker setup

Backend: config/db/security/logging core, SQLAlchemy models (Server,
Credential, UpdateJob, UpdateLog, AuditLog, User), services (winrm, ssh,
cau, audit, job_runner), REST API (auth, servers, updates, audit),
Socket.io WebSocket layer.
Frontend: Vue 3 + TS + Pinia + Tailwind, Views (Dashboard, Servers,
Updates, Audit, Login), axios + socket.io-client, nginx prod config.

.gitignore

@@ -0,0 +1,92 @@
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# Virtual environments
+.venv/
+venv/
+env/
+ENV/
+
+# Poetry
+poetry.lock
+
+# UV
+uv.lock
+
+# Distribution / packaging
+dist/
+build/
+*.egg-info/
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+*~
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Environment files
+.env
+.env.local
+.env.*.local
+
+# Database
+*.db
+*.sqlite
+*.sqlite3
+data/*.db
+data/*.sqlite
+data/*.sqlite3
+
+# Keys & Certificates
+keys/
+*.pem
+*.key
+*.crt
+*.p12
+
+# Logs
+*.log
+logs/
+
+# Coverage
+htmlcov/
+.coverage
+.coverage.*
+coverage.xml
+
+# Test artifacts
+.pytest_cache/
+.tox/
+.mypy_cache/
+.ruff_cache/
+
+# Node
+node_modules/
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# Build outputs
+dist/
+build/
+*.local
+
+# Docker
+docker-compose.override.yml
+
+# Editor
+*.sublime-workspace
+*.sublime-project
+
+# Misc
+*.bak
+*.tmp
+*.temp