fix(plugin-sdk): add export verification tests and release guard (#27569)

src/plugin-sdk/index.test.ts

@@ -46,4 +46,62 @@ describe("plugin-sdk exports", () => {
       expect(Object.prototype.hasOwnProperty.call(sdk, key)).toBe(false);
     }
   });
+
+  // Verify critical functions that extensions depend on are exported and callable.
+  // Regression guard for #27569 where isDangerousNameMatchingEnabled was missing
+  // from the compiled output, breaking mattermost/googlechat/msteams/irc plugins.
+  it("exports critical functions used by channel extensions", () => {
+    const requiredFunctions = [
+      "isDangerousNameMatchingEnabled",
+      "createAccountListHelpers",
+      "buildAgentMediaPayload",
+      "createReplyPrefixOptions",
+      "createTypingCallbacks",
+      "logInboundDrop",
+      "logTypingFailure",
+      "buildPendingHistoryContextFromMap",
+      "clearHistoryEntriesIfEnabled",
+      "recordPendingHistoryEntryIfEnabled",
+      "resolveControlCommandGate",
+      "resolveDmGroupAccessWithLists",
+      "resolveAllowlistProviderRuntimeGroupPolicy",
+      "resolveDefaultGroupPolicy",
+      "resolveChannelMediaMaxBytes",
+      "warnMissingProviderGroupPolicyFallbackOnce",
+      "createDedupeCache",
+      "formatInboundFromLabel",
+      "resolveRuntimeGroupPolicy",
+      "emptyPluginConfigSchema",
+      "normalizePluginHttpPath",
+      "registerPluginHttpRoute",
+      "buildBaseAccountStatusSnapshot",
+      "buildBaseChannelStatusSummary",
+      "buildTokenChannelStatusSummary",
+      "collectStatusIssuesFromLastError",
+      "createDefaultChannelRuntimeState",
+      "resolveChannelEntryMatch",
+      "resolveChannelEntryMatchWithFallback",
+      "normalizeChannelSlug",
+      "buildChannelKeyCandidates",
+    ];
+
+    for (const key of requiredFunctions) {
+      expect(sdk).toHaveProperty(key);
+      expect(typeof (sdk as Record<string, unknown>)[key]).toBe("function");
+    }
+  });
+
+  // Verify critical constants that extensions depend on are exported.
+  it("exports critical constants used by channel extensions", () => {
+    const requiredConstants = [
+      "DEFAULT_GROUP_HISTORY_LIMIT",
+      "DEFAULT_ACCOUNT_ID",
+      "SILENT_REPLY_TOKEN",
+      "PAIRING_APPROVED_MESSAGE",
+    ];
+
+    for (const key of requiredConstants) {
+      expect(sdk).toHaveProperty(key);
+    }
+  });
 });