chore(cleanup): remove discord-control-api sidecar and stale config/docs hooks

plugin/index.ts

@@ -56,15 +56,11 @@ export default {
     const baseConfig = {
       enableDiscordControlTool: true,
       enableDirigentPolicyTool: true,
-      discordControlApiBaseUrl: "http://127.0.0.1:8790",
       schedulingIdentifier: "➡️",
       waitIdentifier: "👤",
       ...(api.pluginConfig || {}),
     } as DirigentConfig & {
       enableDiscordControlTool: boolean;
-      discordControlApiBaseUrl: string;
-      discordControlApiToken?: string;
-      discordControlCallerId?: string;
       enableDirigentPolicyTool: boolean;
     };