fix(agent-run): resolve MCP paths correctly from bundled worker

Agent-run-worker bundles under scripts/, so fallback MCP resolution pointed
at scripts/tkmind-excel-mcp.mjs and broke Goose session startup on H5 image
tasks. Pin MEMIND_PORTAL_H5_ROOT to the repo root and honor TKMIND_EXCEL_MCP_SERVER_PATH.

Co-authored-by: Cursor <cursoragent@cursor.com>

capabilities.mjs

@@ -183,6 +183,15 @@ export function resolveExcelMcpServerPath(overridePath, runtimeRoot) {
   );
 }
 
+/** Prefer explicit env overrides; TKMIND_* matches search MCP naming on 103/.env. */
+export function resolveExcelMcpOverridePath(env = process.env) {
+  return String(
+    env.GOOSED_EXCEL_MCP_SERVER_PATH
+    ?? env.TKMIND_EXCEL_MCP_SERVER_PATH
+    ?? '',
+  ).trim();
+}
+
 function isGoosedMcpContainerized(sandboxMcp = null) {
   const containerFlag = String(process.env.GOOSED_MCP_CONTAINERIZED ?? '').trim();
   if (containerFlag) return containerFlag === '1';
@@ -852,7 +861,7 @@ export function buildAgentExtensionPolicy(
         cmd: resolveSandboxMcpNodeExecPath(sandboxMcp?.nodeExecPath),
         args: [
           resolveExcelMcpServerPath(
-            process.env.GOOSED_EXCEL_MCP_SERVER_PATH,
+            resolveExcelMcpOverridePath(),
             bundledMcpRuntimeRoot,
           ),
           excelWorkspaceRoot,