Phase 8: mark manual compaction from /compact input — SPEC §8 input hook.

Sets pendingCompactionSource before expansion when user text starts with /compact.

Co-authored-by: Cursor <cursoragent@cursor.com>

src/compaction.ts

@@ -10,3 +10,10 @@ export function createCompactionRuntime(): CompactionRuntime {
 		pendingCompactionSource: null,
 	};
 }
+
+/** Input hook before expansion: user `/compact` marks manual source (SPEC §8). */
+export function markManualCompactionFromInput(text: string, runtime: CompactionRuntime): void {
+	if (text.startsWith("/compact")) {
+		runtime.pendingCompactionSource = "manual";
+	}
+}