Fix missing shortcut after install (Linux deb + Windows NSIS)

- Linux: add deb target alongside AppImage so apt/dpkg creates a proper
  desktop entry and application menu item on installation
- Linux: embed .desktop metadata (Name, Comment, Category, WMClass)
  in both AppImage and deb builds
- Windows: explicitly set createDesktopShortcut/createStartMenuShortcut
  in nsis config (fixes cases where shortcuts were not created)
- CI: upload *.deb artifacts to GitHub Release

Author: nodeeeeee

.github/workflows/release.yml

@@ -43,13 +43,13 @@ jobs:
           cache: 'npm'
           cache-dependency-path: electron/package-lock.json
 
-      # ── Linux: system libs required by Electron / AppImage ──────────────────
+      # ── Linux: system libs required by Electron / AppImage / deb ───────────
       - name: Install Linux system deps
         if: matrix.platform == 'linux'
         run: |
           sudo apt-get update -qq
           sudo apt-get install -y --no-install-recommends \
-            libgtk-3-dev libglib2.0-dev fuse libfuse2 rpm
+            libgtk-3-dev libglib2.0-dev fuse libfuse2 rpm dpkg
 
       # ── Python 3.11 for node-gyp ─────────────────────────────────────────────
       # distutils was removed in Python 3.12. node-gyp (used to rebuild
@@ -107,6 +107,7 @@ jobs:
           name: build-${{ matrix.platform }}
           path: |
             electron/dist/*.AppImage
+            electron/dist/*.deb
             electron/dist/*.exe
             electron/dist/*.dmg
             electron/dist/*.zip
@@ -119,6 +120,7 @@ jobs:
         with:
           files: |
             electron/dist/*.AppImage
+            electron/dist/*.deb
             electron/dist/*.exe
             electron/dist/*.dmg
             electron/dist/*.zip

electron/package.json

@@ -29,13 +29,24 @@
       "!test/**"
     ],
     "linux": {
-      "target": "AppImage",
-      "icon": "../assets/icon.png"
+      "target": ["AppImage", "deb"],
+      "icon": "../assets/icon.png",
+      "category": "Education",
+      "desktop": {
+        "Name": "AutoNote",
+        "Comment": "Lecture notes generator from Canvas recordings",
+        "StartupWMClass": "AutoNote"
+      }
     },
     "win": {
       "target": "nsis",
       "icon": "../assets/icon.ico"
     },
+    "nsis": {
+      "createDesktopShortcut": true,
+      "createStartMenuShortcut": true,
+      "shortcutName": "AutoNote"
+    },
     "mac": {
       "target": "dmg",
       "icon": "../assets/icon.icns"