v1.0.3 - In-note search, note history navigation, keyboard shortcuts

- Find in note (Ctrl+F): search within current note with match highlighting and navigation
- Global vault search moved to Ctrl+Shift+F
- Note history navigation: Alt+Left/Right and mouse back/forward buttons
- Search icon added to editor toolbar
- Escape closes Settings and Info panels
- Updated Info panel with new keyboard shortcuts
- Deb install type detection with APT upgrade instructions

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "../node_modules/@tauri-apps/cli/config.schema.json",
   "productName": "HelixNotes",
-  "version": "1.0.2",
+  "version": "1.0.3",
   "identifier": "com.helixnotes.app",
   "build": {
     "frontendDist": "../build",