---
name: "WhatsApp and Slack missing reset command handler"
---

# Bug 400: WhatsApp and Slack missing reset command handler

## Description

The reset command has a fallback handler in chat/commands/mod.rs that returns None with a comment saying it's handled before try_handle_command. This is only true for Matrix. WhatsApp and Slack don't have pre-dispatch handling, so None causes fallthrough to LLM. This caused a real outage when stale session IDs couldn't be cleared via the bot after switching from Docker to bare-metal.

## Implementation Note

Follow the **rebuild pattern** established in story 402, with one complication: `handle_reset` in `server/src/chat/transport/matrix/reset.rs` takes a Matrix-specific `ConversationHistory` (`Arc<TokioMutex<HashMap<OwnedRoomId, RoomConversation>>>`), so it cannot be called directly from WhatsApp or Slack.

**WhatsApp session storage** (`server/src/chat/transport/whatsapp.rs`):
- Type: `WhatsAppConversationHistory = Arc<TokioMutex<HashMap<String, RoomConversation>>>` (key = sender phone number)
- Persisted to `.huskies/whatsapp_history.json` via `save_whatsapp_history`

**Slack session storage** (`server/src/chat/transport/slack.rs`):
- Type: `SlackConversationHistory = Arc<TokioMutex<HashMap<String, RoomConversation>>>` (key = channel ID)
- Persisted to `.huskies/slack_history.json` via `save_slack_history`

**Approach:**
- Use `extract_reset_command` from `server/src/chat/transport/matrix/reset.rs` to detect the command (it works transport-agnostically)
- Implement the reset inline in each transport's async message handler: clear `session_id` and `entries` for the sender/channel key, call the transport's own `save_*_history`, reply with confirmation
- Add async intercepts in `whatsapp.rs` (~line 1107, after the rebuild intercept) and `slack.rs` (~line 845, after the rebuild intercept)
- The fallback handler in `chat/commands/mod.rs` (`handle_reset_fallback`) stays as-is

## How to Reproduce

1. Configure bot with transport = "whatsapp" or "slack"\n2. Send "reset" to the bot\n3. Check server logs

## Actual Result

Log shows "No command matched, forwarding to LLM" — reset is sent to the LLM as a conversational message instead of clearing the session.

## Expected Result

The bot clears the sender's session_id from conversation history and replies with confirmation like "Session cleared."

## Acceptance Criteria

- [ ] WhatsApp transport handles reset command: clears sender session_id and replies with confirmation
- [ ] Slack transport handles reset command: clears channel session_id and replies with confirmation
- [ ] Fallback handler in chat/commands/mod.rs no longer silently swallows the reset command
