feat(build): add icon generation and external binary bundling

- Add scripts to generate application icons in multiple formats (ICO, ICNS, PNG)
- Implement download scripts for uv and Node.js binaries for cross-platform support
- Update build configuration to use new icon resources and bundled binaries
- Remove old loading screen and unused build configurations
- Fix application icon path resolution to use app resources directory

electron-builder.yml

@@ -6,7 +6,7 @@ artifactName: ${productName}-${version}-${os}-${arch}.${ext}
 
 directories:
   output: release
-  buildResources: public
+  buildResources: resources
 
 files:
   - dist
@@ -14,8 +14,8 @@ files:
   - package.json
 
 extraResources:
-  - from: public/
-    to: public/
+  - from: resources/icons/
+    to: icons/
     filter:
       - "**/*"
   - from: electron/scripts/
@@ -41,7 +41,7 @@ afterPack: ./scripts/after-pack.cjs
 # macOS Configuration
 mac:
   category: public.app-category.productivity
-  icon: public/logo.icns
+  icon: resources/icons/icon.icns
   target:
     - target: dmg
       arch:
@@ -60,7 +60,7 @@ mac:
 
 dmg:
   size: 1g
-  icon: public/logo.icns
+  icon: resources/icons/icon.icns
   iconSize: 100
   window:
     width: 540
@@ -77,7 +77,8 @@ dmg:
 # Windows Configuration
 win:
   verifyUpdateCodeSignature: false
-  # icon: public/logo.ico
+  signAndEditExecutable: false
+  icon: resources/icons/icon.ico
   target:
     - target: nsis
       arch: x64
@@ -93,13 +94,12 @@ nsis:
   createStartMenuShortcut: true
   shortcutName: NIANXX
   uninstallDisplayName: NIANXX
-  license: LICENSE
-  # installerIcon: public/logo.ico
-  # uninstallerIcon: public/logo.ico
+  installerIcon: resources/icons/icon.ico
+  uninstallerIcon: resources/icons/icon.ico
 
 # Linux Configuration
 linux:
-  icon: public/
+  icon: resources/icons/
   target:
     - target: AppImage
       arch: