fix(ralph-loop): guard delayed start snapshots

Prevent delayed loop-start message counts from overwriting active Ralph Loop state after the loop has already advanced, so ULW completion can still enter Oracle verification instead of iterating forever.

Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent)

Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>

src/hooks/ralph-loop/ralph-loop-hook.ts

@@ -73,6 +73,11 @@ export function createRalphLoopHook(
 				return startSuccess
 			}
 
+			const startedState = loopState.getState()
+			const expectedStartedAt = startedState?.session_id === sessionID
+				? startedState.started_at
+				: undefined
+
 			ctx.client.session
 				.messages({
 					path: { id: sessionID },
@@ -80,7 +85,7 @@ export function createRalphLoopHook(
 				})
 				.then((messagesResponse: unknown) => {
 					const messageCountAtStart = getMessageCountFromResponse(messagesResponse)
-					loopState.setMessageCountAtStart(sessionID, messageCountAtStart)
+					loopState.setMessageCountAtStart(sessionID, messageCountAtStart, expectedStartedAt)
 				})
 				.catch(() => {})