[Feat] Add Fast orchestrator to Discord

.agents/skills/mock-discord-testing/SKILL.md

@@ -1,6 +1,6 @@
 ---
 name: mock-discord-testing
-description: Run Roomote Discord integration flows through the checked-in mock Discord REST harness and synthetic Gateway envelopes instead of a real Discord bot. Use when testing Discord task entry, follow-up queueing to active jobs, slash commands (`/new`, `/link`, `/help`), button interactions, outbound Discord posts, task threads and forum posts, message chunking, `DISCORD_API_BASE_URL` routing, `/mock/state`, or `/mock/events`.
+description: Run Roomote Discord integration flows through the checked-in mock Discord REST harness and synthetic Gateway envelopes instead of a real Discord bot. Use when testing Discord task entry, follow-up queueing to active jobs, slash commands (`/new`, `/goal`, `/fast`, `/link`, `/help`), button interactions, outbound Discord posts, task threads and forum posts, message chunking, `DISCORD_API_BASE_URL` routing, `/mock/state`, or `/mock/events`.
 ---
 
 # Mock Discord Testing
@@ -166,6 +166,7 @@ curl -s http://127.0.0.1:3014/mock/state | jq '.requests | map({method, path})'
 See `references/scenarios.md` for the full user-journey catalog. Common picks:
 
 - **`dm-task-entry`** — DM task kickoff that creates a cloud job and a task reply
+- **`dm-fast-answer`** — `/fast request:<...>` interaction answers directly without creating a task
 - **`guild-mention-task-entry`** — root-channel @mention creates a task thread
 - **`followup-in-task-thread`** — message in the task thread queues to the running job instead of launching a new task
 - **`slash-new-command`** — `/new request:<...>` interaction forces a fresh task

.agents/skills/mock-discord-testing/references/scenarios.md

@@ -6,11 +6,11 @@ The core product invariant under test is: **each task owns one thread (or forum
 
 ## 1. dm-fast-answer
 
-A linked user DMs `!fast <question>`.
+A linked user invokes `/fast request:<question>` in a DM.
 
-- Inject: `message` in a DM channel (type 1), text `!fast what file handles Discord events?`.
-- Expect: eyes reaction on the inbound message; one inline bot answer in the same channel; **no** cloud job created.
-- Assert: state `.messages` (one bot message), `.reactions`; DB has no new task row.
+- Inject: `interaction` (type 2, `data.name: "fast"`, options `[{name: "request", type: 3, value: "what file handles Discord events?"}]`) in a DM channel.
+- Expect: the deferred interaction response is edited with the answer; **no** cloud job is created.
+- Assert: state interaction responses; DB has no new task row.
 
 ## 2. dm-task-entry
 

apps/api/src/handlers/discord/channel-auto-start.ts

@@ -4,6 +4,7 @@ import {
   getDiscordMessageContent,
   isDiscordAudioAttachment,
   isDiscordBotMentioned,
+  stripDiscordBotMention,
   type DiscordGatewayEvent,
   type DiscordMessage,
 } from '@roomote/communication/discord-event';
@@ -23,6 +24,7 @@ import {
 } from '@roomote/types';
 
 import { apiLogger } from '../../logging.js';
+import { hasCommunicationsFastModeDefault } from '../fast-agent-entry.js';
 import { checkAutoStartChannelCache } from '../shared/auto-start-cache.js';
 import {
   CHANNEL_AUTO_START_FAILURE_MESSAGE,
@@ -36,6 +38,7 @@ import {
   releaseAccountLinkDmSlot,
 } from './account-link.js';
 import { processDiscordAttachments } from './attachments.js';
+import { processDiscordFastAgentMessage } from './fast-agent.js';
 import { rememberPendingDiscordAccountLinkTask } from './pending-account-link-task.js';
 import { startNewDiscordTask } from './task-orchestration.js';
 import {
@@ -268,6 +271,36 @@ export async function maybeHandleDiscordChannelAutoStart(input: {
     };
     launchOwnerUserId = mappedUserId;
     queuedMessageUserId = mappedUserId;
+
+    const defaultFastQuestion = stripDiscordBotMention(
+      getDiscordMessageContent(message),
+      botUserId,
+    );
+    if (
+      defaultFastQuestion &&
+      (await hasCommunicationsFastModeDefault(mappedUserId))
+    ) {
+      void processDiscordFastAgentMessage({
+        event,
+        question: defaultFastQuestion,
+        sender: message.author,
+        senderUserId: mappedUserId,
+        provider,
+        applicationId: input.applicationId,
+        channel,
+        metadata: discordMetadataForChannel({
+          channel,
+          messageId: message.id,
+          anchorMessageId: message.id,
+        }),
+        sessionThreadId: message.id,
+      }).catch((error) => {
+        apiLogger.error(
+          `[DiscordChannelAutoStart] Failed to answer in Fast mode for ${logContext}: ${error instanceof Error ? error.message : String(error)}`,
+        );
+      });
+      return true;
+    }
   }
 
   const messageAttachments = getDiscordMessageAttachments(message);