chore: upgrade header filtering log messages to info level

- Change header filtering log messages from debug to info level
- Provides better visibility into header forwarding behavior
- Important for operational monitoring and troubleshooting

Author: prassanna-ravishankar

src/agentex/lib/core/services/adk/acp/acp.py

@@ -69,12 +69,12 @@ def _filter_headers(
 
         # Pass-through behavior: if no config, forward all headers
         if config is None:
-            logger.debug("No header filtering config found, passing through all %d headers", len(headers))
+            logger.info("No header filtering config found, passing through all %d headers", len(headers))
             return headers
 
         # Apply filtering based on allowlist
         if not config.allowed_headers:
-            logger.debug("Empty allowlist in config, blocking all headers")
+            logger.info("Empty allowlist in config, blocking all headers")
             return {}
 
         filtered = {}
@@ -88,11 +88,11 @@ def _filter_headers(
 
             if header_allowed:
                 filtered[header_name] = header_value
-                logger.debug("Allowed header: %s", header_name)
+                logger.info("Allowed header: %s", header_name)
             else:
-                logger.debug("Header '%s' not in allowlist, ignoring", header_name)
+                logger.info("Header '%s' not in allowlist, ignoring", header_name)
 
-        logger.debug("Filtered %d headers from %d based on allowlist", len(filtered), len(headers))
+        logger.info("Filtered %d headers from %d based on allowlist", len(filtered), len(headers))
         return filtered
 
     async def task_create(