Update workflow and improve test logging

Added environment configuration for GitHub Pages deployment in the build workflow and removed unused environment variable from test workflow. Enhanced logging in OllamaAPIIntegrationTest to include the external host address.

.github/workflows/build-on-pull-request.yml

@@ -20,6 +20,10 @@ jobs:
     permissions:
       contents: read
 
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
     steps:
       - uses: actions/checkout@v5
       - name: Set up JDK 21
@@ -39,8 +43,6 @@ jobs:
     uses: ./.github/workflows/run-tests.yml
     with:
       branch: ${{ github.head_ref || github.ref_name }}
-    env:
-      USE_EXTERNAL_OLLAMA_HOST: "false"
 
   build-docs:
     name: Build Documentation