Move tauri imports behind platform abstraction, merge CUDA build into release workflow

- Add openPath and pickDirectory to PlatformFilesystem interface
- Remove direct @tauri-apps/plugin-shell and plugin-dialog imports from app
- Merge build-cuda.yml into release.yml as a parallel job

.github/workflows/build-cuda.yml

@@ -1,73 +0,0 @@
-name: Build CUDA Backend
-
-on:
-  workflow_dispatch:
-  push:
-    tags:
-      - "v*"
-
-jobs:
-  build-cuda-windows:
-    runs-on: windows-latest
-    permissions:
-      contents: write
-
-    steps:
-      - uses: actions/checkout@v4
-
-      - name: Setup Python
-        uses: actions/setup-python@v5
-        with:
-          python-version: "3.12"
-          cache: "pip"
-
-      - name: Install Python dependencies
-        run: |
-          python -m pip install --upgrade pip
-          pip install pyinstaller
-          pip install -r backend/requirements.txt
-
-      - name: Install PyTorch with CUDA 12.1
-        run: |
-          pip install torch --index-url https://download.pytorch.org/whl/cu121 --force-reinstall --no-deps
-          pip install torchaudio --index-url https://download.pytorch.org/whl/cu121
-
-      - name: Verify CUDA support in torch
-        run: |
-          python -c "import torch; print(f'CUDA available in build: {torch.cuda.is_available()}'); print(f'CUDA version: {torch.version.cuda}')"
-
-      - name: Build CUDA server binary
-        shell: bash
-        working-directory: backend
-        run: python build_binary.py --cuda
-
-      - name: Split binary for GitHub Releases
-        shell: bash
-        run: |
-          python scripts/split_binary.py \
-            backend/dist/voicebox-server-cuda.exe \
-            --output release-assets/
-
-      - name: Upload split parts to GitHub Release
-        if: startsWith(github.ref, 'refs/tags/')
-        uses: softprops/action-gh-release@v1
-        with:
-          files: |
-            release-assets/voicebox-server-cuda.part*.exe
-            release-assets/voicebox-server-cuda.sha256
-            release-assets/voicebox-server-cuda.manifest
-          draft: true
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-
-      - name: Upload binary as workflow artifact (for testing)
-        uses: actions/upload-artifact@v4
-        with:
-          name: voicebox-server-cuda-windows
-          path: backend/dist/voicebox-server-cuda.exe
-          retention-days: 7
-
-  # Linux CUDA build can be added later with:
-  # build-cuda-linux:
-  #   runs-on: ubuntu-22.04
-  #   ...

.github/workflows/release.yml

@@ -158,3 +158,63 @@ jobs:
           prerelease: false
           args: ${{ matrix.args }}
           includeUpdaterJson: true
+
+  build-cuda-windows:
+    runs-on: windows-latest
+    permissions:
+      contents: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+          cache: "pip"
+
+      - name: Install Python dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install pyinstaller
+          pip install -r backend/requirements.txt
+
+      - name: Install PyTorch with CUDA 12.1
+        run: |
+          pip install torch --index-url https://download.pytorch.org/whl/cu121 --force-reinstall --no-deps
+          pip install torchaudio --index-url https://download.pytorch.org/whl/cu121
+
+      - name: Verify CUDA support in torch
+        run: |
+          python -c "import torch; print(f'CUDA available in build: {torch.cuda.is_available()}'); print(f'CUDA version: {torch.version.cuda}')"
+
+      - name: Build CUDA server binary
+        shell: bash
+        working-directory: backend
+        run: python build_binary.py --cuda
+
+      - name: Split binary for GitHub Releases
+        shell: bash
+        run: |
+          python scripts/split_binary.py \
+            backend/dist/voicebox-server-cuda.exe \
+            --output release-assets/
+
+      - name: Upload split parts to GitHub Release
+        if: startsWith(github.ref, 'refs/tags/')
+        uses: softprops/action-gh-release@v1
+        with:
+          files: |
+            release-assets/voicebox-server-cuda.part*.exe
+            release-assets/voicebox-server-cuda.sha256
+            release-assets/voicebox-server-cuda.manifest
+          draft: true
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Upload binary as workflow artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: voicebox-server-cuda-windows
+          path: backend/dist/voicebox-server-cuda.exe
+          retention-days: 7

app/src/components/ServerSettings/ModelManagement.tsx

@@ -446,8 +446,7 @@ export function ModelManagement() {
                 className="text-xs text-muted-foreground h-7 px-2"
                 onClick={async () => {
                   try {
-                    const { open } = await import('@tauri-apps/plugin-shell');
+                    await platform.filesystem.openPath(cacheDir.path);
-                    await open(cacheDir.path);
                   } catch {
                     toast({ title: 'Failed to open model folder', variant: 'destructive' });
                   }
@@ -462,14 +461,9 @@ export function ModelManagement() {
                 className="text-xs text-muted-foreground h-7 px-2"
                 onClick={async () => {
                   try {
-                    const { open: openDialog } = await import('@tauri-apps/plugin-dialog');
+                    const newDir = await platform.filesystem.pickDirectory(
-                    const selected = await openDialog({
+                      'Choose model storage folder',
-                      directory: true,
+                    );
-                      title: 'Choose model storage folder',
-                    });
-                    if (!selected) return;
-                    const newDir =
-                      typeof selected === 'string' ? selected : (selected as { path: string }).path;
                     if (!newDir) return;
                     setPendingMigrateDir(newDir);
                   } catch {

app/src/platform/types.ts

@@ -10,6 +10,8 @@ export interface FileFilter {
 
 export interface PlatformFilesystem {
   saveFile(filename: string, blob: Blob, filters?: FileFilter[]): Promise<void>;
+  openPath(path: string): Promise<void>;
+  pickDirectory(title: string): Promise<string | null>;
 }
 
 export interface UpdateStatus {

tauri/src/platform/filesystem.ts

@@ -1,4 +1,4 @@
-import type { PlatformFilesystem, FileFilter } from '@/platform/types';
+import type { FileFilter, PlatformFilesystem } from '@/platform/types';
 
 export const tauriFilesystem: PlatformFilesystem = {
   async saveFile(filename: string, blob: Blob, filters?: FileFilter[]) {
@@ -12,9 +12,8 @@ export const tauriFilesystem: PlatformFilesystem = {
 
     if (!filePath) return; // User cancelled the dialog
 
-    const resolvedPath = typeof filePath === 'string'
+    const resolvedPath =
-      ? filePath
+      typeof filePath === 'string' ? filePath : (filePath as { path: string }).path;
-      : (filePath as { path: string }).path;
 
     if (!resolvedPath) {
       throw new Error('Failed to resolve save path from dialog');
@@ -23,4 +22,17 @@ export const tauriFilesystem: PlatformFilesystem = {
     const arrayBuffer = await blob.arrayBuffer();
     await writeFile(resolvedPath, new Uint8Array(arrayBuffer));
   },
+
+  async openPath(path: string) {
+    const { open } = await import('@tauri-apps/plugin-shell');
+    await open(path);
+  },
+
+  async pickDirectory(title: string) {
+    const { open } = await import('@tauri-apps/plugin-dialog');
+    const selected = await open({ directory: true, title });
+    if (!selected) return null;
+    const dir = typeof selected === 'string' ? selected : (selected as { path: string }).path;
+    return dir || null;
+  },
 };

web/src/platform/filesystem.ts

@@ -1,4 +1,4 @@
-import type { PlatformFilesystem, FileFilter } from '@/platform/types';
+import type { FileFilter, PlatformFilesystem } from '@/platform/types';
 
 export const webFilesystem: PlatformFilesystem = {
   async saveFile(filename: string, blob: Blob, _filters?: FileFilter[]) {
@@ -12,4 +12,12 @@ export const webFilesystem: PlatformFilesystem = {
     window.URL.revokeObjectURL(url);
     document.body.removeChild(a);
   },
+
+  async openPath(_path: string) {
+    // No filesystem access in browser
+  },
+
+  async pickDirectory(_title: string) {
+    return null;
+  },
 };