update tests and memory implementation to follow real DB implementations as much as possible. Fix the tests to let the DB generate the server uuids rather than setting them up in the test.

internal/database/memory.go

@@ -7,6 +7,7 @@ import (
 	"strings"
 	"sync"
 
+	"github.com/google/uuid"
 	"github.com/modelcontextprotocol/registry/internal/model"
 )
 
@@ -231,6 +232,8 @@ func (db *MemoryDB) Publish(ctx context.Context, serverDetail *model.ServerDetai
 		return ErrInvalidInput
 	}
 
+	// Generate a new ID for the server detail
+	serverDetail.ID = uuid.New().String()
 	// Store a copy of the entire ServerDetail
 	serverDetailCopy := *serverDetail
 	db.entries[serverDetail.ID] = &serverDetailCopy