Support read only mode (#36)

Fix: #35
Reviewed-on: https://gitea.com/gitea/gitea-mcp/pulls/36
Co-authored-by: hiifong <f@ilo.nz>
Co-committed-by: hiifong <f@ilo.nz>

operation/repo/repo.go

@@ -9,12 +9,15 @@ import (
 	"gitea.com/gitea/gitea-mcp/pkg/log"
 	"gitea.com/gitea/gitea-mcp/pkg/ptr"
 	"gitea.com/gitea/gitea-mcp/pkg/to"
+	"gitea.com/gitea/gitea-mcp/pkg/tool"
 
 	gitea_sdk "code.gitea.io/sdk/gitea"
 	"github.com/mark3labs/mcp-go/mcp"
 	"github.com/mark3labs/mcp-go/server"
 )
 
+var Tool = tool.New()
+
 const (
 	CreateRepoToolName  = "create_repo"
 	ForkRepoToolName    = "fork_repo"
@@ -54,6 +57,21 @@ var (
 	)
 )
 
+func init() {
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    CreateRepoTool,
+		Handler: CreateRepoFn,
+	})
+	Tool.RegisterWrite(server.ServerTool{
+		Tool:    ForkRepoTool,
+		Handler: ForkRepoFn,
+	})
+	Tool.RegisterRead(server.ServerTool{
+		Tool:    ListMyReposTool,
+		Handler: ListMyReposFn,
+	})
+}
+
 func RegisterTool(s *server.MCPServer) {
 	s.AddTool(CreateRepoTool, CreateRepoFn)
 	s.AddTool(ForkRepoTool, ForkRepoFn)