fix(feishu): add reactionNotifications mode gating (openclaw#29388) thanks @Takhoffman

Verified:
- pnpm build
- pnpm check
- pnpm test:macmini

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

extensions/feishu/src/config-schema.ts

@@ -110,6 +110,7 @@ const GroupSessionScopeSchema = z
  * - "enabled": Messages in different topics get separate sessions
  */
 const TopicSessionModeSchema = z.enum(["disabled", "enabled"]).optional();
+const ReactionNotificationModeSchema = z.enum(["off", "own", "all"]).optional();
 
 /**
  * Reply-in-thread mode for group chats.
@@ -159,6 +160,7 @@ const FeishuSharedConfigShape = {
   streaming: StreamingModeSchema,
   tools: FeishuToolsConfigSchema,
   replyInThread: ReplyInThreadSchema,
+  reactionNotifications: ReactionNotificationModeSchema,
 };
 
 /**
@@ -195,6 +197,7 @@ export const FeishuConfigSchema = z
     webhookPath: z.string().optional().default("/feishu/events"),
     ...FeishuSharedConfigShape,
     dmPolicy: DmPolicySchema.optional().default("pairing"),
+    reactionNotifications: ReactionNotificationModeSchema.optional().default("own"),
     groupPolicy: GroupPolicySchema.optional().default("allowlist"),
     requireMention: z.boolean().optional().default(true),
     groupSessionScope: GroupSessionScopeSchema,