fix(feishu): honor wildcard group config for reply policy (#29456)

## Summary
- honor Feishu wildcard group policy fallback via `channels.feishu.groups["*"]` when no explicit group entry matches
- keep exact and case-insensitive explicit group matches higher precedence than wildcard fallback
- add changelog credit and TypeScript-safe test assertions

## Verification
- pnpm install --frozen-lockfile
- pnpm build
- pnpm check
- pnpm test:macmini

Co-authored-by: Wayne Pika <262095977+WaynePika@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

extensions/feishu/src/policy.test.ts

@@ -1,7 +1,62 @@
 import { describe, expect, it } from "vitest";
-import { isFeishuGroupAllowed, resolveFeishuAllowlistMatch } from "./policy.js";
+import {
+  isFeishuGroupAllowed,
+  resolveFeishuAllowlistMatch,
+  resolveFeishuGroupConfig,
+} from "./policy.js";
+import type { FeishuConfig } from "./types.js";
 
 describe("feishu policy", () => {
+  describe("resolveFeishuGroupConfig", () => {
+    it("falls back to wildcard group config when direct match is missing", () => {
+      const cfg = {
+        groups: {
+          "*": { requireMention: false },
+          "oc-explicit": { requireMention: true },
+        },
+      } as unknown as FeishuConfig;
+
+      const resolved = resolveFeishuGroupConfig({
+        cfg,
+        groupId: "oc-missing",
+      });
+
+      expect(resolved).toEqual({ requireMention: false });
+    });
+
+    it("prefers exact group config over wildcard", () => {
+      const cfg = {
+        groups: {
+          "*": { requireMention: false },
+          "oc-explicit": { requireMention: true },
+        },
+      } as unknown as FeishuConfig;
+
+      const resolved = resolveFeishuGroupConfig({
+        cfg,
+        groupId: "oc-explicit",
+      });
+
+      expect(resolved).toEqual({ requireMention: true });
+    });
+
+    it("keeps case-insensitive matching for explicit group ids", () => {
+      const cfg = {
+        groups: {
+          "*": { requireMention: false },
+          OC_UPPER: { requireMention: true },
+        },
+      } as unknown as FeishuConfig;
+
+      const resolved = resolveFeishuGroupConfig({
+        cfg,
+        groupId: "oc_upper",
+      });
+
+      expect(resolved).toEqual({ requireMention: true });
+    });
+  });
+
   describe("resolveFeishuAllowlistMatch", () => {
     it("allows wildcard", () => {
       expect(

extensions/feishu/src/policy.ts

@@ -56,6 +56,7 @@ export function resolveFeishuGroupConfig(params: {
   groupId?: string | null;
 }): FeishuGroupConfig | undefined {
   const groups = params.cfg?.groups ?? {};
+  const wildcard = groups["*"];
   const groupId = params.groupId?.trim();
   if (!groupId) {
     return undefined;
@@ -68,7 +69,10 @@ export function resolveFeishuGroupConfig(params: {
 
   const lowered = groupId.toLowerCase();
   const matchKey = Object.keys(groups).find((key) => key.toLowerCase() === lowered);
-  return matchKey ? groups[matchKey] : undefined;
+  if (matchKey) {
+    return groups[matchKey];
+  }
+  return wildcard;
 }
 
 export function resolveFeishuGroupToolPolicy(