fix(custom-widgets): address final v2 review feedback (#6451)

packages/api/src/test/mcp.spec.ts

@@ -22,6 +22,7 @@ const MCP_TOOL_ALLOWLIST = {
     "customWidget_get",
     "customWidget_getAuthoringPrompt",
     "customWidget_getSkill",
+    "customWidget_legacyMigrationPrompt",
     "customWidget_list",
     "customWidget_previewJournal",
     "customWidget_previewQuery",
@@ -69,6 +70,7 @@ const MCP_TOOL_ALLOWLIST = {
     "board_setHomeBoard",
     "board_setMobileHomeBoard",
     "customWidget_delete",
+    "customWidget_deleteLegacy",
     "customWidget_previewAction",
     "customWidget_templatePatch",
     "dnsHole_disable",
@@ -94,6 +96,7 @@ const MCP_TOOL_ALLOWLIST = {
     "apiKeys_delete",
     "customWidget_configurationRequestUser",
     "customWidget_create",
+    "customWidget_migrateLegacy",
     "customWidget_previewCreate",
     "customWidget_secretSet",
     "customWidget_sourceConfigure",