feat(feishu): support sender/topic-scoped group session routing (openclaw#17798) thanks @yfge

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

Co-authored-by: yfge <1186273+yfge@users.noreply.github.com>
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>

extensions/feishu/src/bot.ts

@@ -755,19 +755,39 @@ export async function handleFeishuMessage(params: {
     const feishuFrom = `feishu:${ctx.senderOpenId}`;
     const feishuTo = isGroup ? `chat:${ctx.chatId}` : `user:${ctx.senderOpenId}`;
 
-    // Resolve peer ID for session routing
-    // When topicSessionMode is enabled, messages within a topic (identified by root_id)
-    // get a separate session from the main group chat.
+    // Resolve peer ID for session routing.
+    // Default is one session per group chat; this can be customized with groupSessionScope.
     let peerId = isGroup ? ctx.chatId : ctx.senderOpenId;
-    let topicSessionMode: "enabled" | "disabled" = "disabled";
-    if (isGroup && ctx.rootId) {
-      const groupConfig = resolveFeishuGroupConfig({ cfg: feishuCfg, groupId: ctx.chatId });
-      topicSessionMode = groupConfig?.topicSessionMode ?? feishuCfg?.topicSessionMode ?? "disabled";
-      if (topicSessionMode === "enabled") {
-        // Use chatId:topic:rootId as peer ID for topic-scoped sessions
-        peerId = `${ctx.chatId}:topic:${ctx.rootId}`;
-        log(`feishu[${account.accountId}]: topic session isolation enabled, peer=${peerId}`);
+    let groupSessionScope: "group" | "group_sender" | "group_topic" | "group_topic_sender" =
+      "group";
+
+    if (isGroup) {
+      const legacyTopicSessionMode =
+        groupConfig?.topicSessionMode ?? feishuCfg?.topicSessionMode ?? "disabled";
+      groupSessionScope =
+        groupConfig?.groupSessionScope ??
+        feishuCfg?.groupSessionScope ??
+        (legacyTopicSessionMode === "enabled" ? "group_topic" : "group");
+
+      switch (groupSessionScope) {
+        case "group_sender":
+          peerId = `${ctx.chatId}:sender:${ctx.senderOpenId}`;
+          break;
+        case "group_topic":
+          peerId = ctx.rootId ? `${ctx.chatId}:topic:${ctx.rootId}` : ctx.chatId;
+          break;
+        case "group_topic_sender":
+          peerId = ctx.rootId
+            ? `${ctx.chatId}:topic:${ctx.rootId}:sender:${ctx.senderOpenId}`
+            : `${ctx.chatId}:sender:${ctx.senderOpenId}`;
+          break;
+        case "group":
+        default:
+          peerId = ctx.chatId;
+          break;
       }
+
+      log(`feishu[${account.accountId}]: group session scope=${groupSessionScope}, peer=${peerId}`);
     }
 
     let route = core.channel.routing.resolveAgentRoute({
@@ -778,9 +798,11 @@ export async function handleFeishuMessage(params: {
         kind: isGroup ? "group" : "direct",
         id: peerId,
       },
-      // Add parentPeer for binding inheritance in topic mode
+      // Add parentPeer for binding inheritance in topic-scoped modes.
       parentPeer:
-        isGroup && ctx.rootId && topicSessionMode === "enabled"
+        isGroup &&
+        ctx.rootId &&
+        (groupSessionScope === "group_topic" || groupSessionScope === "group_topic_sender")
           ? {
               kind: "group",
               id: ctx.chatId,