fix: Apply Windows linker fix globally for all Rust builds

- Configure cargo globally in user's .cargo/config.toml
- Remove Git usr/bin from PATH once for entire job
- Use PowerShell for Windows Tauri build to respect PATH changes
- This fixes link.exe issues for both standalone and Tauri builds

Author: guyernest

.github/workflows/build-local-agent.yml

@@ -45,15 +45,7 @@ jobs:
           sparse-checkout: |
             lambda/tools/local-agent
       
-      # Remove Git usr/bin from PATH FIRST to avoid link.exe conflict
-      - name: Remove Git usr/bin from PATH (Windows)
-        if: matrix.win
-        shell: pwsh
-        run: |
-          $env:PATH = ($env:PATH -split ';' | Where-Object {$_ -notmatch 'Git\\usr\\bin'} ) -join ';'
-          "PATH=$env:PATH" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
-      
-      # Windows needs MSVC - setup proper environment AFTER removing Git from PATH
+      # Windows needs MSVC - setup proper environment
       - name: Setup MSVC (Windows)
         if: matrix.win
         uses: ilammy/msvc-dev-cmd@v1
@@ -76,13 +68,21 @@ jobs:
       - name: Configure cargo linker (Windows)
         if: matrix.win
         shell: pwsh
-        working-directory: lambda/tools/local-agent/rust-executor-standalone
         run: |
-          New-Item -ItemType Directory -Force .cargo | Out-Null
+          # Create cargo config in home directory to apply globally
+          $cargoDir = "$env:USERPROFILE\.cargo"
+          New-Item -ItemType Directory -Force $cargoDir | Out-Null
           @"
           [target.x86_64-pc-windows-msvc]
           linker = "link.exe"
-          "@ | Set-Content .cargo/config.toml -Encoding UTF8
+          
+          [env]
+          RUSTFLAGS = "-C target-feature=+crt-static"
+          "@ | Set-Content "$cargoDir\config.toml" -Encoding UTF8
+          
+          # Also remove Git from PATH globally for this job
+          $env:PATH = ($env:PATH -split ';' | Where-Object {$_ -notmatch 'Git\\usr\\bin'} ) -join ';'
+          echo "PATH=$env:PATH" | Out-File -FilePath $env:GITHUB_ENV -Append -Encoding utf8
       
       # Verify the correct linker is being used
       - name: Check linker (Windows)
@@ -129,8 +129,19 @@ jobs:
           cp ../src-tauri/src/rust_automation.rs src/
           cargo build --release --target "${{ matrix.target }}"
       
-      # Build Tauri GUI app
-      - name: Build Tauri GUI
+      # Build Tauri GUI app - Windows
+      - name: Build Tauri GUI (Windows)
+        if: matrix.win
+        working-directory: lambda/tools/local-agent
+        shell: pwsh
+        run: npm run tauri build -- --target ${{ matrix.target }}
+        env:
+          TAURI_SIGNING_PRIVATE_KEY: ""
+          TAURI_SIGNING_PRIVATE_KEY_PASSWORD: ""
+      
+      # Build Tauri GUI app - Unix
+      - name: Build Tauri GUI (Unix)
+        if: matrix.win != true
         working-directory: lambda/tools/local-agent
         run: npm run tauri build -- --target ${{ matrix.target }}
         shell: bash