feat(*): svelte 5 panel view sharing the gateway ui, obsidian theme, preview and tests

.gitignore

@@ -3,7 +3,10 @@ node_modules/
 
 # build output (regenerated by `make install` / `make zip`)
 main.js
+styles.css
 *.zip
+preview/bundle.js
+tests/.entry.ts
 
 # plugin runtime — Obsidian writes settings here when the symlinked dir
 # is used as the live plugin; never want it in the repo