feat(policy): add per-channel channelPolicies with hot-reload list mode/lists

plugin/rules.ts

@@ -4,6 +4,15 @@ export type WhisperGateConfig = {
   listMode?: "human-list" | "agent-list";
   humanList?: string[];
   agentList?: string[];
+  channelPolicies?: Record<
+    string,
+    {
+      listMode?: "human-list" | "agent-list";
+      humanList?: string[];
+      agentList?: string[];
+      endSymbols?: string[];
+    }
+  >;
   // backward compatibility
   bypassUserIds?: string[];
   endSymbols?: string[];
@@ -21,9 +30,34 @@ function getLastChar(input: string): string {
   return t.length ? t[t.length - 1] : "";
 }
 
+function resolvePolicy(config: WhisperGateConfig, channelId?: string) {
+  const globalMode = config.listMode || "human-list";
+  const globalHuman = config.humanList || config.bypassUserIds || [];
+  const globalAgent = config.agentList || [];
+  const globalEnd = config.endSymbols || ["🔚"];
+
+  if (!channelId) {
+    return { listMode: globalMode, humanList: globalHuman, agentList: globalAgent, endSymbols: globalEnd };
+  }
+
+  const cp = config.channelPolicies || {};
+  const scoped = cp[channelId];
+  if (!scoped) {
+    return { listMode: globalMode, humanList: globalHuman, agentList: globalAgent, endSymbols: globalEnd };
+  }
+
+  return {
+    listMode: scoped.listMode || globalMode,
+    humanList: scoped.humanList || globalHuman,
+    agentList: scoped.agentList || globalAgent,
+    endSymbols: scoped.endSymbols || globalEnd,
+  };
+}
+
 export function evaluateDecision(params: {
   config: WhisperGateConfig;
   channel?: string;
+  channelId?: string;
   senderId?: string;
   content?: string;
 }): Decision {
@@ -38,16 +72,18 @@ export function evaluateDecision(params: {
     return { shouldUseNoReply: false, reason: "non_discord" };
   }
 
-  const mode = config.listMode || "human-list";
-  const humanList = config.humanList || config.bypassUserIds || [];
-  const agentList = config.agentList || [];
+  const policy = resolvePolicy(config, params.channelId);
+
+  const mode = policy.listMode;
+  const humanList = policy.humanList;
+  const agentList = policy.agentList;
 
   const senderId = params.senderId || "";
   const inHumanList = !!senderId && humanList.includes(senderId);
   const inAgentList = !!senderId && agentList.includes(senderId);
 
   const lastChar = getLastChar(params.content || "");
-  const hasEnd = !!lastChar && (config.endSymbols || []).includes(lastChar);
+  const hasEnd = !!lastChar && policy.endSymbols.includes(lastChar);
 
   if (mode === "human-list") {
     if (inHumanList) {