Fix Windows CUDA build: replace Compress-Archive and drop NSIS

- Replace Compress-Archive (2GB limit) with 7z for sidecar packaging
- Remove NSIS from bundle targets — NSIS has a 2GB per-file limit that
  breaks with CUDA-sized sidecar.zip; MSI (WiX) handles large files
  by splitting into multiple CABs
- Update Windows upload to look for .msi only

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/release.yml

@@ -222,7 +222,8 @@ jobs:
       - name: Package sidecar for Tauri
         shell: powershell
         run: |
-          Compress-Archive -Path python\dist\voice-to-notes-sidecar\* -DestinationPath src-tauri\sidecar.zip
+          # Compress-Archive has a 2GB limit; use 7z for CUDA builds
+          7z a -tzip -mx=5 src-tauri\sidecar.zip .\python\dist\voice-to-notes-sidecar\*
 
       # ── Tauri app ──
       - name: Set up Node.js
@@ -266,7 +267,7 @@ jobs:
           $RELEASE_ID = $release.id
           Write-Host "Release ID: ${RELEASE_ID}"
 
-          Get-ChildItem -Path src-tauri\target\release\bundle -Recurse -Include *.msi,*-setup.exe | ForEach-Object {
+          Get-ChildItem -Path src-tauri\target\release\bundle -Recurse -Include *.msi | ForEach-Object {
             $filename = $_.Name
             $encodedName = [System.Uri]::EscapeDataString($filename)
             $size = [math]::Round($_.Length / 1MB, 1)

src-tauri/tauri.conf.json

@@ -31,7 +31,7 @@
   },
   "bundle": {
     "active": true,
-    "targets": ["deb", "nsis", "msi", "dmg"],
+    "targets": ["deb", "msi", "dmg"],
     "icon": [
       "icons/32x32.png",
       "icons/128x128.png",