Fix client-integration-tests.yml Windows job

Author: data-douser

.github/workflows/client-integration-tests.yml

@@ -115,9 +115,14 @@ jobs:
       ## Run integration tests. This script builds the server bundle and runs tests.
       ## We do NOT use 'npm run build-and-test' as it runs query unit tests which
       ## have a dedicated workflow (query-unit-tests.yml).
+      ##
+      ## On Windows, GNU Make's SHELL := bash resolves to WSL's bash.exe
+      ## (C:\Windows\System32\bash.exe) instead of Git Bash, causing
+      ## "Windows Subsystem for Linux has no installed distributions" errors.
+      ## We override SHELL with the full Git Bash path to avoid this.
       - name: MCP Integration Tests - Run integration tests
         shell: bash
-        run: make -C client test-integration
+        run: make -C client test-integration SHELL="$(which bash)"
 
       - name: MCP Integration Tests - Stop the background MCP server process
         if: always() && matrix.mcp-mode == 'http'