refactor(telegram): split lane delivery modules

src/telegram/lane-delivery-state.ts

@@ -0,0 +1,32 @@
+export type LaneDeliverySnapshot = {
+  delivered: boolean;
+  skippedNonSilent: number;
+  failedNonSilent: number;
+};
+
+export type LaneDeliveryStateTracker = {
+  markDelivered: () => void;
+  markNonSilentSkip: () => void;
+  markNonSilentFailure: () => void;
+  snapshot: () => LaneDeliverySnapshot;
+};
+
+export function createLaneDeliveryStateTracker(): LaneDeliveryStateTracker {
+  const state: LaneDeliverySnapshot = {
+    delivered: false,
+    skippedNonSilent: 0,
+    failedNonSilent: 0,
+  };
+  return {
+    markDelivered: () => {
+      state.delivered = true;
+    },
+    markNonSilentSkip: () => {
+      state.skippedNonSilent += 1;
+    },
+    markNonSilentFailure: () => {
+      state.failedNonSilent += 1;
+    },
+    snapshot: () => ({ ...state }),
+  };
+}