Initial project setup with Go backend, React frontend, and Neutralino desktop shell

.gitignore

@@ -0,0 +1,75 @@
+# Go
+*.exe
+*.exe~
+*.dll
+*.so
+*.dylib
+*.test
+*.out
+*.prof
+go.work
+go.work.sum
+
+# Bun
+bun.lock
+
+# Node
+**/node_modules/
+
+# Vite
+frontend/dist/
+frontend/.vite/
+
+# Neutralino
+.tmp/
+bin/
+
+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+._*
+.Spotlight-V100
+.Trashes
+Icon?
+
+# Windows
+Thumbs.db
+Thumbs.db:encryptable
+ehthumbs.db
+ehthumbs_vista.db
+Desktop.ini
+$RECYCLE.BIN/
+
+# Linux
+*~
+.directory
+.Trash-*
+
+# VSCode
+.vscode/
+*.code-workspace
+.history/
+
+# IDE
+.idea/
+*.swp
+*.swo
+*~
+
+# Env
+.env
+.env.*
+!.env.example
+
+# Claude Code
+.claude/
+
+# opencode
+.opencode/
+
+# openspec
+openspec/changes/archive
+
+# Custom
+temp