try to add debugging to mcp server

agents/claude.ts

@@ -1,3 +1,4 @@
+import { readFileSync } from "node:fs";
 import { access, constants } from "node:fs/promises";
 import * as core from "@actions/core";
 import { createMcpConfig } from "../mcp/config.ts";
@@ -192,6 +193,29 @@ function processJSONChunk(chunk: string, agent?: ClaudeAgent): void {
               ],
             ])
           );
+
+          // Check for failed MCP servers and show debug logs
+          if (parsedChunk.mcp_servers?.length > 0) {
+            const failedServers = parsedChunk.mcp_servers.filter(
+              (server: any) => server.status === "failed"
+            );
+            if (failedServers.length > 0) {
+              const failedNames = failedServers.map((server: any) => server.name).join(", ");
+
+              // Try to read MCP server debug logs
+              let debugInfo = "";
+              try {
+                const logContent = readFileSync("/tmp/mcp-server.log", "utf-8");
+                core.error("MCP Server Debug Log:");
+                core.error(logContent);
+                debugInfo = " (see debug log above)";
+              } catch (logError) {
+                debugInfo = ` (could not read debug log: ${logError instanceof Error ? logError.message : String(logError)})`;
+              }
+
+              throw new Error(`MCP servers failed to start: ${failedNames}${debugInfo}`);
+            }
+          }
         }
         break;