harmonize build scripts

.github/workflows/build.yml

@@ -13,13 +13,13 @@ jobs:
         include:
           - os: macos-latest
             label: macOS
-            build_cmd: bash scripts/build-mac.sh
+            build_cmd: npm run build:mac
             artifact_path: desktop-dist/tono.dmg
             artifact_name: tono-macos
 
           - os: ubuntu-latest
             label: Linux
-            build_cmd: bash scripts/build-linux.sh
+            build_cmd: npm run build:linux
             artifact_path: desktop-dist/tono-linux.tar.gz
             artifact_name: tono-linux
 
@@ -45,10 +45,12 @@ jobs:
           node-version: "20"
           cache: npm
 
-      # Build scripts call `uv pip install` for Python deps
       - name: Install uv
         run: pip install uv
 
+      - name: Create venv
+        run: uv venv --python 3.13
+
       # Linux: pywebview needs webkit2gtk headers to import during PyInstaller collection
       - name: Install Linux system dependencies
         if: runner.os == 'Linux'

scripts/build-linux.sh

@@ -15,7 +15,6 @@ done
 REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 cd "$REPO_ROOT"
 
-uv venv --python 3.13
 source .venv/bin/activate
 
 if [ -d ".venv/bin" ]; then

scripts/build-mac.sh

@@ -15,7 +15,6 @@ done
 REPO_ROOT="$(cd "$(dirname "$0")/.." && pwd)"
 cd "$REPO_ROOT"
 
-uv venv --python 3.13
 source .venv/bin/activate
 
 if [ -d ".venv/bin" ]; then

scripts/build-windows.ps1

@@ -30,7 +30,6 @@ function Assert-LastExitCode {
 $repoRoot = Split-Path -Parent $PSScriptRoot
 Set-Location $repoRoot
 
-uv venv --python 3.13
 ./.venv/Scripts/Activate
 
 $pythonExe = if (Test-Path ".\.venv\Scripts\python.exe") {