fix(ralph-loop): scope completion detection to messages since loop start

src/hooks/ralph-loop/loop-state-controller.ts

@@ -23,6 +23,7 @@ export function createLoopStateController(options: {
 			loopOptions?: {
 				maxIterations?: number
 				completionPromise?: string
+				messageCountAtStart?: number
 				ultrawork?: boolean
 				strategy?: "reset" | "continue"
 			},
@@ -34,6 +35,7 @@ export function createLoopStateController(options: {
 					loopOptions?.maxIterations ??
 					config?.default_max_iterations ??
 					DEFAULT_MAX_ITERATIONS,
+				message_count_at_start: loopOptions?.messageCountAtStart,
 				completion_promise:
 					loopOptions?.completionPromise ??
 					DEFAULT_COMPLETION_PROMISE,
@@ -93,5 +95,19 @@ export function createLoopStateController(options: {
 
 			return state
 		},
+
+		setMessageCountAtStart(sessionID: string, messageCountAtStart: number): RalphLoopState | null {
+			const state = readState(directory, stateDir)
+			if (!state || state.session_id !== sessionID) {
+				return null
+			}
+
+			state.message_count_at_start = messageCountAtStart
+			if (!writeState(directory, state, stateDir)) {
+				return null
+			}
+
+			return state
+		},
 	}
 }