add debug mcp tool for testing, fix transport issues

mcp/debug.ts

@@ -0,0 +1,45 @@
+import { type } from "arktype";
+import { $ } from "../utils/shell.ts";
+import type { ToolResult } from "./shared.ts";
+import { tool } from "./shared.ts";
+
+export const DebugShellCommand = type({});
+
+export const DebugShellCommandTool = tool({
+  name: "debug_shell_command",
+  description:
+    "debug tool: runs 'git status' and returns the output. use this to test shell command execution in the MCP server.",
+  parameters: DebugShellCommand,
+  execute: async (): Promise<ToolResult> => {
+    try {
+      const result = $("git", ["status"]);
+
+      return {
+        content: [
+          {
+            type: "text",
+            text: JSON.stringify(
+              {
+                success: true,
+                command: "git status",
+                output: result.trim(),
+              },
+              null,
+              2
+            ),
+          },
+        ],
+      };
+    } catch (error) {
+      return {
+        content: [
+          {
+            type: "text",
+            text: `Error: ${error instanceof Error ? error.message : String(error)}`,
+          },
+        ],
+        isError: true,
+      };
+    }
+  },
+});

mcp/server.ts

@@ -9,6 +9,7 @@ import {
   EditCommentTool,
   UpdateWorkingCommentTool,
 } from "./comment.ts";
+import { DebugShellCommandTool } from "./debug.ts";
 import { IssueTool } from "./issue.ts";
 import { PullRequestTool } from "./pr.ts";
 import { PullRequestInfoTool } from "./prInfo.ts";
@@ -35,6 +36,7 @@ addTools(server, [
   GetReviewCommentsTool,
   ListPullRequestReviewsTool,
   GetCheckSuiteLogsTool,
+  DebugShellCommandTool,
 ]);
 
 server.start();