Reduce servlet logging verbosity from INFO to DEBUG

Move verbose per-request logging (request body, session management,
SSE connections, method processing) from INFO to DEBUG level.
Keep INFO for significant events like new Visit creation.

@@ -194,19 +194,6 @@ class UiNarrativeBuilder {
         if (navigation.isEmpty()) {
             def parentPath = getParentPath(currentPath)
             if (parentPath) {
-                navigation << "To go back, call moqui_render_screen(path='${parentPath}')."
-            }
-        }
-        
-        return navigation
-    }
-                }
-            }
-        }
-        
-        if (navigation.isEmpty()) {
-            def parentPath = getParentPath(currentPath)
-            if (parentPath) {
                 navigation << "To go back, call moqui_browse_screens(path='${parentPath}')."
             }
         }

@@ -57,7 +57,7 @@ class VisitBasedMcpSession implements MoquiMcpTransport {
                 metadata.mcpMessageCount = 0
                 saveSessionMetadata(metadata)
 
-                logger.info("MCP Session initialized for Visit ${visit.visitId}")
+                logger.debug("MCP Session initialized for Visit ${visit.visitId}")
             }
         } catch (Exception e) {
             logger.warn("Failed to initialize MCP session for Visit ${visit.visitId}: ${e.message}")
@@ -92,7 +92,7 @@ class VisitBasedMcpSession implements MoquiMcpTransport {
         }
 
         closing.set(true)
-        logger.info("Gracefully closing MCP session ${visit.visitId}")
+        logger.debug("Gracefully closing MCP session ${visit.visitId}")
 
         try {
             // Send graceful shutdown notification
@@ -117,7 +117,7 @@ class VisitBasedMcpSession implements MoquiMcpTransport {
             return // Already closed
         }
 
-        logger.info("Closing MCP session ${visit.visitId} (messages sent: ${messageCount.get()})")
+        logger.debug("Closing MCP session ${visit.visitId} (messages sent: ${messageCount.get()})")
 
         try {
             // Send final close event if writer is still available