fix: improve error handling in ServerBuilder manual registration

This fixes the poor error reporting where users would only see generic
"X error(s) occurred during manual registration" instead of the actual
underlying error that caused the registration failure.

Author: CodeWithKyrian

src/ServerBuilder.php

@@ -17,7 +17,7 @@
 use PhpMcp\Server\Contracts\SessionHandlerInterface;
 use PhpMcp\Server\Defaults\BasicContainer;
 use PhpMcp\Server\Exception\ConfigurationException;
-use PhpMcp\Server\Exception\DefinitionException;
+
 use PhpMcp\Server\Session\ArraySessionHandler;
 use PhpMcp\Server\Session\CacheSessionHandler;
 use PhpMcp\Server\Session\SessionManager;
@@ -286,7 +286,6 @@ private function registerManualElements(Registry $registry, LoggerInterface $log
             return;
         }
 
-        $errorCount = 0;
         $docBlockParser = new Utils\DocBlockParser($logger);
         $schemaGenerator = new Utils\SchemaGenerator($docBlockParser);
 
@@ -308,8 +307,8 @@ private function registerManualElements(Registry $registry, LoggerInterface $log
 
                 $logger->debug("Registered manual tool {$name} from handler {$className}::{$methodName}");
             } catch (Throwable $e) {
-                $errorCount++;
                 $logger->error('Failed to register manual tool', ['handler' => $data['handler'], 'name' => $data['name'], 'exception' => $e]);
+                throw new ConfigurationException("Error registering manual tool '{$data['name']}': {$e->getMessage()}", 0, $e);
             }
         }
 
@@ -334,8 +333,8 @@ private function registerManualElements(Registry $registry, LoggerInterface $log
 
                 $logger->debug("Registered manual resource {$name} from handler {$className}::{$methodName}");
             } catch (Throwable $e) {
-                $errorCount++;
                 $logger->error('Failed to register manual resource', ['handler' => $data['handler'], 'uri' => $data['uri'], 'exception' => $e]);
+                throw new ConfigurationException("Error registering manual resource '{$data['uri']}': {$e->getMessage()}", 0, $e);
             }
         }
 
@@ -360,8 +359,8 @@ private function registerManualElements(Registry $registry, LoggerInterface $log
 
                 $logger->debug("Registered manual template {$name} from handler {$className}::{$methodName}");
             } catch (Throwable $e) {
-                $errorCount++;
                 $logger->error('Failed to register manual template', ['handler' => $data['handler'], 'uriTemplate' => $data['uriTemplate'], 'exception' => $e]);
+                throw new ConfigurationException("Error registering manual resource template '{$data['uriTemplate']}': {$e->getMessage()}", 0, $e);
             }
         }
 
@@ -401,15 +400,11 @@ private function registerManualElements(Registry $registry, LoggerInterface $log
 
                 $logger->debug("Registered manual prompt {$name} from handler {$className}::{$methodName}");
             } catch (Throwable $e) {
-                $errorCount++;
                 $logger->error('Failed to register manual prompt', ['handler' => $data['handler'], 'name' => $data['name'], 'exception' => $e]);
+                throw new ConfigurationException("Error registering manual prompt '{$data['name']}': {$e->getMessage()}", 0, $e);
             }
         }
 
-        if ($errorCount > 0) {
-            throw new DefinitionException("{$errorCount} error(s) occurred during manual element registration. Check logs.");
-        }
-
         $logger->debug('Manual element registration complete.');
     }