refactor: unify DM pairing challenge flows

extensions/feishu/src/bot.ts

@@ -6,6 +6,7 @@ import {
   createScopedPairingAccess,
   DEFAULT_GROUP_HISTORY_LIMIT,
   type HistoryEntry,
+  issuePairingChallenge,
   normalizeAgentId,
   recordPendingHistoryEntryIfEnabled,
   resolveOpenProviderRuntimeGroupPolicy,
@@ -1101,29 +1102,29 @@ export async function handleFeishuMessage(params: {
 
     if (isDirect && dmPolicy !== "open" && !dmAllowed) {
       if (dmPolicy === "pairing") {
-        const { code, created } = await pairing.upsertPairingRequest({
-          id: ctx.senderOpenId,
+        await issuePairingChallenge({
+          channel: "feishu",
+          senderId: ctx.senderOpenId,
+          senderIdLine: `Your Feishu user id: ${ctx.senderOpenId}`,
           meta: { name: ctx.senderName },
-        });
-        if (created) {
-          log(`feishu[${account.accountId}]: pairing request sender=${ctx.senderOpenId}`);
-          try {
+          upsertPairingRequest: pairing.upsertPairingRequest,
+          onCreated: () => {
+            log(`feishu[${account.accountId}]: pairing request sender=${ctx.senderOpenId}`);
+          },
+          sendPairingReply: async (text) => {
             await sendMessageFeishu({
               cfg,
               to: `chat:${ctx.chatId}`,
-              text: core.channel.pairing.buildPairingReply({
-                channel: "feishu",
-                idLine: `Your Feishu user id: ${ctx.senderOpenId}`,
-                code,
-              }),
+              text,
               accountId: account.accountId,
             });
-          } catch (err) {
+          },
+          onReplyError: (err) => {
             log(
               `feishu[${account.accountId}]: pairing reply failed for ${ctx.senderOpenId}: ${String(err)}`,
             );
-          }
-        }
+          },
+        });
       } else {
         log(
           `feishu[${account.accountId}]: blocked unauthorized sender ${ctx.senderOpenId} (dmPolicy=${dmPolicy})`,