Initial commit: Dostalgia — DOS game hub

- Go backend (single binary) with embedded Svelte frontend
- JSON-per-game storage (no database)
- .jsdos bundle creation on upload
- Dark phosphor-green theme (#33FF33)
- js-dos v8 emulator integration
- Sockdrive support for games >80MB
- IGDB placeholder for future artwork scraping
- Docker deployment ready

.gitignore

@@ -0,0 +1,19 @@
+# Dependencies
+node_modules/
+frontend/dist/
+frontend/node_modules/
+
+# Runtime data
+data/games/*
+data/artwork/*
+data/saves/*
+!data/games/.gitkeep
+!data/artwork/.gitkeep
+!data/saves/.gitkeep
+
+# Binary
+dostalgia
+
+# IDE
+.vscode/
+.idea/