NanoVNA-F V3 Starlight documentation site

Astro 5 + Starlight 0.37 docs site for the NanoVNA-F V3 portable
vector network analyzer. Content sourced from the extracted PDF user
guide and menu structure map.

- 38 MDX content pages organized in diataxis structure
  (getting-started, tutorials, how-to guides, reference)
- Steel blue/teal theme (#2d7d9a/#5bb8d4) distinct from NanoVNA-H
- 5 custom Astro components (CommandTable, MenuTree, SpecCard,
  ScreenRegion, CalibrationStep)
- 42 renamed screenshots from the user guide PDF extraction
- Docker deployment via Caddy behind caddy-docker-proxy
- Full console command reference (28 commands)
- Complete menu map with interactive tree component

.gitignore

@@ -0,0 +1,20 @@
+# build output
+dist/
+# generated types
+.astro/
+
+# dependencies
+node_modules/
+
+# logs
+npm-debug.log*
+yarn-debug.log*
+yarn-error.log*
+pnpm-debug.log*
+
+# environment variables
+.env
+.env.production
+
+# macOS-specific files
+.DS_Store