feat: AR-GPS initial commit — Python + JavaScript PyQt5 (standalone desktop app) + FastAPI (charts REST router) + OpenLayers (frontend map)

.gitignore

@@ -0,0 +1,36 @@
+# Python
+__pycache__/
+*.py[cod]
+*.pyo
+*.pyd
+.venv/
+venv/
+env/
+.env
+.env.*
+*.egg-info/
+dist/
+build/
+output/
+*.db
+.mypy_cache/
+.pytest_cache/
+.ruff_cache/
+
+# Database files (GPS track data — user-specific, not version-controlled)
+data/*.db
+data/*.db-shm
+data/*.db-wal
+
+# ENC chart cache files (large binary/GeoJSON, installed at runtime)
+charts/*/
+!charts/.gitkeep
+
+# Qt / PyQt artefacts
+*.pyc
+
+# General
+.DS_Store
+Thumbs.db
+*.bak
+*.log