Introduce per application validation for python Samples

Author: rahuldevikar761

.github/workflows/ci-python-agentframework-sampleagent.yml

@@ -59,14 +59,10 @@ jobs:
         python -c "import fastapi; print('OK: fastapi')"
         python -c "import pydantic; print('OK: pydantic')"
 
-    - name: Validate syntax
+    - name: Compile and validate Python syntax
       run: |
-        python -m py_compile agent.py
-        python -m py_compile agent_interface.py
-        python -m py_compile host_agent_server.py
-        python -m py_compile local_authentication_options.py
-        python -m py_compile token_cache.py
-        python -m py_compile start_with_generic_host.py
+        python -m compileall -f -q . || (echo "Syntax validation failed" && exit 1)
+        echo "All Python files compiled successfully"
 
     - name: Test imports
       continue-on-error: true

.github/workflows/ci-python-googleadk-sampleagent.yml

@@ -59,10 +59,10 @@ jobs:
         python -c "import fastapi; print('OK: fastapi')"
         python -c "import pydantic; print('OK: pydantic')"
 
-    - name: Validate syntax
+    - name: Compile and validate Python syntax
       run: |
-        python -m py_compile agent.py
-        python -m py_compile mcp_tool_registration_service.py
+        python -m compileall -f -q . || (echo "Syntax validation failed" && exit 1)
+        echo "All Python files compiled successfully"
 
     - name: Test imports
       continue-on-error: true

.github/workflows/ci-python-openai-sampleagent.yml

@@ -63,14 +63,10 @@ jobs:
         python -c "import fastapi; print('OK: fastapi')"
         python -c "import pydantic; print('OK: pydantic')"
 
-    - name: Validate syntax
+    - name: Compile and validate Python syntax
       run: |
-        python -m py_compile agent.py
-        python -m py_compile agent_interface.py
-        python -m py_compile host_agent_server.py
-        python -m py_compile local_authentication_options.py
-        python -m py_compile token_cache.py
-        python -m py_compile start_with_generic_host.py
+        python -m compileall -f -q . || (echo "Syntax validation failed" && exit 1)
+        echo "All Python files compiled successfully"
 
     - name: Test imports
       continue-on-error: true