feat: implement multi-message mode and shuffle mode features

- Add multi-message mode with start/end/prompt markers
- Implement turn order shuffling with /turn-shuffling command
- Add channel mode state management
- Update hooks to handle multi-message mode behavior
- Update plugin config with new markers
- Update TASKLIST.md with completed tasks

plugin/commands/dirigent-command.ts

@@ -1,6 +1,7 @@
 import type { OpenClawPluginApi } from "openclaw/plugin-sdk";
 import { advanceTurn, getTurnDebugInfo, resetTurn } from "../turn-manager.js";
 import type { DirigentConfig } from "../rules.js";
+import { setChannelShuffling, getChannelShuffling } from "../core/channel-modes.js";
 
 type CommandDeps = {
   api: OpenClawPluginApi;
@@ -30,6 +31,7 @@ export function registerDirigentCommand(deps: CommandDeps): void {
             `/dirigent turn-status - Show turn-based speaking status\n` +
             `/dirigent turn-advance - Manually advance turn\n` +
             `/dirigent turn-reset - Reset turn order\n` +
+            `/dirigent turn-shuffling [on|off] - Enable/disable turn order shuffling\n` +
             `/dirigent_policy get <discordChannelId>\n` +
             `/dirigent_policy set <discordChannelId> <policy-json>\n` +
             `/dirigent_policy delete <discordChannelId>`,
@@ -60,6 +62,25 @@ export function registerDirigentCommand(deps: CommandDeps): void {
         return { text: JSON.stringify({ ok: true }) };
       }
 
+      if (subCmd === "turn-shuffling") {
+        const channelId = cmdCtx.channelId;
+        if (!channelId) return { text: "Cannot get channel ID", isError: true };
+        
+        const arg = parts[1]?.toLowerCase();
+        if (arg === "on") {
+          setChannelShuffling(channelId, true);
+          return { text: JSON.stringify({ ok: true, channelId, shuffling: true }) };
+        } else if (arg === "off") {
+          setChannelShuffling(channelId, false);
+          return { text: JSON.stringify({ ok: true, channelId, shuffling: false }) };
+        } else if (!arg) {
+          const isShuffling = getChannelShuffling(channelId);
+          return { text: JSON.stringify({ ok: true, channelId, shuffling: isShuffling }) };
+        } else {
+          return { text: "Invalid argument. Use: /dirigent turn-shuffling [on|off]", isError: true };
+        }
+      }
+
       return { text: `Unknown subcommand: ${subCmd}`, isError: true };
     },
   });