diff --git a/.storkit/work/1_backlog/400_bug_whatsapp_and_slack_missing_reset_command_handler.md b/.storkit/work/1_backlog/400_bug_whatsapp_and_slack_missing_reset_command_handler.md
index 1fbc3a5f..0fc8931c 100644
--- a/.storkit/work/1_backlog/400_bug_whatsapp_and_slack_missing_reset_command_handler.md
+++ b/.storkit/work/1_backlog/400_bug_whatsapp_and_slack_missing_reset_command_handler.md
@@ -10,7 +10,21 @@ The reset command has a fallback handler in chat/commands/mod.rs that returns No
 
 ## Implementation Note
 
-The fix must be in the shared command dispatch layer (chat/commands/mod.rs), NOT by adding transport-specific handlers. Study how commands like "rebuild" and "status" already work through the shared dispatch — the reset handler should return a concrete result from try_handle_command so all transports get it for free. We do not want separate mechanisms per transport per command.
+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 `.storkit/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 `.storkit/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