refactor(queue): remove drop mode

docs/configuration.md

@@ -93,7 +93,7 @@ Controls how inbound messages behave when an agent run is already active.
 {
   routing: {
     queue: {
-      mode: "interrupt", // global default: queue | interrupt | drop
+      mode: "interrupt", // global default: queue | interrupt
       bySurface: {
         whatsapp: "interrupt",
         telegram: "interrupt",

docs/queue.md

@@ -22,7 +22,6 @@ We now serialize command-based auto-replies (WhatsApp Web listener) through a ti
 Inbound messages can either queue or interrupt when a run is already active:
 - `queue`: serialize per session; if the agent is streaming, the new message is appended to the current run.
 - `interrupt`: abort the active run for that session, then run the newest message.
-- `drop`: ignore the message if the session lane is busy.
 
 Defaults (when unset in config):
 - WhatsApp + Telegram → `interrupt`

src/auto-reply/reply.ts

@@ -70,7 +70,7 @@ const SYSTEM_MARK = "⚙️";
 const BARE_SESSION_RESET_PROMPT =
   "A new session was started via /new or /reset. Say hi briefly (1-2 sentences) and ask what the user wants to do next. Do not mention internal steps, files, tools, or reasoning.";
 
-type QueueMode = "queue" | "interrupt" | "drop";
+type QueueMode = "queue" | "interrupt";
 
 export function extractThinkDirective(body?: string): {
   cleaned: string;
@@ -123,7 +123,6 @@ function normalizeQueueMode(raw?: string): QueueMode | undefined {
   if (cleaned === "queue" || cleaned === "queued") return "queue";
   if (cleaned === "interrupt" || cleaned === "interrupts" || cleaned === "abort")
     return "interrupt";
-  if (cleaned === "drop" || cleaned === "discard") return "drop";
   return undefined;
 }
 
@@ -589,7 +588,7 @@ export async function getReplyFromConfig(
     if (hasQueueDirective && !inlineQueueMode && !inlineQueueReset) {
       cleanupTyping();
       return {
-        text: `Unrecognized queue mode "${rawQueueMode ?? ""}". Valid modes: queue, interrupt, drop.`,
+        text: `Unrecognized queue mode "${rawQueueMode ?? ""}". Valid modes: queue, interrupt.`,
       };
     }
 
@@ -1107,13 +1106,6 @@ export async function getReplyFromConfig(
     sessionKey ?? sessionIdFinal,
   );
   const laneSize = getQueueSize(sessionLaneKey);
-  if (resolvedQueueMode === "drop" && laneSize > 0) {
-    logVerbose(
-      `Dropping inbound message for ${sessionLaneKey} (queue busy, mode=drop)`,
-    );
-    cleanupTyping();
-    return undefined;
-  }
   if (resolvedQueueMode === "interrupt" && laneSize > 0) {
     const cleared = clearCommandLane(sessionLaneKey);
     const aborted = abortEmbeddedPiRun(sessionIdFinal);

src/config/config.ts

@@ -147,7 +147,7 @@ export type DiscordConfig = {
   mediaMaxMb?: number;
 };
 
-export type QueueMode = "queue" | "interrupt" | "drop";
+export type QueueMode = "queue" | "interrupt";
 
 export type QueueModeBySurface = {
   whatsapp?: QueueMode;
@@ -454,11 +454,7 @@ const GroupChatSchema = z
   })
   .optional();
 
-const QueueModeSchema = z.union([
+const QueueModeSchema = z.union([z.literal("queue"), z.literal("interrupt")]);
-  z.literal("queue"),
-  z.literal("interrupt"),
-  z.literal("drop"),
-]);
 
 const QueueModeBySurfaceSchema = z
   .object({

src/config/sessions.ts

@@ -21,7 +21,7 @@ export type SessionEntry = {
   modelOverride?: string;
   groupActivation?: "mention" | "always";
   groupActivationNeedsSystemIntro?: boolean;
-  queueMode?: "queue" | "interrupt" | "drop";
+  queueMode?: "queue" | "interrupt";
   inputTokens?: number;
   outputTokens?: number;
   totalTokens?: number;