diff --git a/src/hooks/useEqualSplitUndo.ts b/src/hooks/useEqualSplitUndo.ts
index 4b5ee77..04f14c6 100644
--- a/src/hooks/useEqualSplitUndo.ts
+++ b/src/hooks/useEqualSplitUndo.ts
@@ -9,12 +9,16 @@ interface RecipientRow {
 
 export function useEqualSplitUndo(recipients: RecipientRow[]) {
   const [previousState, setPreviousState] = useState<RecipientRow[] | null>(null);
+  const [undoCount, setUndoCount] = useState(0);
+  const [redoCount, setRedoCount] = useState(0);
 
   const splitEqually = useCallback(
     (totalAmount: number) => {
       if (recipients.length <= 1) return false;
 
       setPreviousState([...recipients]);
+      setUndoCount((count) => count + 1);
+      setRedoCount(0);
 
       const perRecipient = Math.floor(100 / recipients.length);
       const remainder = 100 - (perRecipient * recipients.length);
@@ -39,10 +43,14 @@ export function useEqualSplitUndo(recipients: RecipientRow[]) {
   const undo = useCallback(() => {
     const state = previousState;
     setPreviousState(null);
+    if (state !== null) {
+      setUndoCount((count) => Math.max(0, count - 1));
+      setRedoCount((count) => count + 1);
+    }
     return state;
   }, [previousState]);
 
   const hasUndo = previousState !== null;
 
-  return { splitEqually, undo, hasUndo };
+  return { splitEqually, undo, hasUndo, undoCount, redoCount };
 }
diff --git a/src/hooks/useFeeSpikeDetection.ts b/src/hooks/useFeeSpikeDetection.ts
index 5e95477..083680b 100644
--- a/src/hooks/useFeeSpikeDetection.ts
+++ b/src/hooks/useFeeSpikeDetection.ts
@@ -1,20 +1,22 @@
 "use client";
 
-import { useEffect, useState } from "react";
-import { NORMAL_FEE_THRESHOLD } from "@/lib/stellar";
+import { useEffect, useRef, useState } from "react";
 
 export interface FeeSpikeState {
   p95AcceptedFee: number | null;
   isSpike: boolean;
   loading: boolean;
+  sensitivityPercent: number;
 }
 
-export function useFeeSpikeDetection(): FeeSpikeState {
+export function useFeeSpikeDetection(sensitivityPercent = 50): FeeSpikeState {
   const [state, setState] = useState<FeeSpikeState>({
     p95AcceptedFee: null,
     isSpike: false,
     loading: true,
+    sensitivityPercent,
   });
+  const historyRef = useRef<number[]>([]);
 
   useEffect(() => {
     let cancelled = false;
@@ -27,10 +29,21 @@ export function useFeeSpikeDetection(): FeeSpikeState {
         const json = await response.json();
         const p95AcceptedFee = Number(json.p95_accepted_fee);
         if (!cancelled) {
+          const history = historyRef.current;
+          const rollingAverage =
+            history.length > 0
+              ? history.reduce((sum, fee) => sum + fee, 0) / history.length
+              : p95AcceptedFee;
+          const isSpike =
+            rollingAverage > 0 &&
+            p95AcceptedFee > rollingAverage * (1 + sensitivityPercent / 100);
+          history.push(p95AcceptedFee);
+          if (history.length > 10) history.shift();
           setState({
             p95AcceptedFee,
-            isSpike: p95AcceptedFee > NORMAL_FEE_THRESHOLD * 2,
+            isSpike,
             loading: false,
+            sensitivityPercent,
           });
         }
       } catch {
@@ -51,7 +64,7 @@ export function useFeeSpikeDetection(): FeeSpikeState {
       window.clearInterval(intervalId);
       document.removeEventListener("visibilitychange", handleVisibilityChange);
     };
-  }, []);
+  }, [sensitivityPercent]);
 
   return state;
 }
diff --git a/src/hooks/useInvoiceSelection.ts b/src/hooks/useInvoiceSelection.ts
index 5d3a913..23a8a05 100644
--- a/src/hooks/useInvoiceSelection.ts
+++ b/src/hooks/useInvoiceSelection.ts
@@ -8,6 +8,7 @@ interface UseInvoiceSelectionResult {
   toggleSelecting: () => void;
   toggleInvoice: (id: string) => void;
   selectAll: (ids: string[]) => void;
+  selectAllVisible: (visibleIds: string[]) => void;
   deselectAll: () => void;
   isSelected: (id: string) => boolean;
   selectedCount: number;
@@ -40,6 +41,10 @@ export function useInvoiceSelection(): UseInvoiceSelectionResult {
     setSelectedIds(new Set(ids));
   }, []);
 
+  const selectAllVisible = useCallback((visibleIds: string[]) => {
+    setSelectedIds(new Set(visibleIds));
+  }, []);
+
   const deselectAll = useCallback(() => {
     setSelectedIds(new Set());
   }, []);
@@ -55,6 +60,7 @@ export function useInvoiceSelection(): UseInvoiceSelectionResult {
     toggleSelecting,
     toggleInvoice,
     selectAll,
+    selectAllVisible,
     deselectAll,
     isSelected,
     selectedCount: selectedIds.size,
diff --git a/src/hooks/usePushNotifications.ts b/src/hooks/usePushNotifications.ts
index 6c9f851..08f39cd 100644
--- a/src/hooks/usePushNotifications.ts
+++ b/src/hooks/usePushNotifications.ts
@@ -4,8 +4,11 @@ import { useCallback, useEffect, useState } from "react";
 
 export type PushNotificationStatus = "unsupported" | "off" | "denied" | "active";
 
+export type PushNotificationPermissionStatus = "granted" | "denied" | "default";
+
 export interface UsePushNotificationsResult {
   status: PushNotificationStatus;
+  permissionStatus: PushNotificationPermissionStatus;
   subscribe: () => Promise<boolean>;
   unsubscribe: () => Promise<void>;
 }
@@ -32,12 +35,16 @@ function isSupported(): boolean {
  */
 export function usePushNotifications(invoiceId: string): UsePushNotificationsResult {
   const [status, setStatus] = useState<PushNotificationStatus>("off");
+  const [permissionStatus, setPermissionStatus] = useState<PushNotificationPermissionStatus>(
+    isSupported() ? Notification.permission : "default"
+  );
 
   const refreshStatus = useCallback(async () => {
     if (!isSupported()) {
       setStatus("unsupported");
       return;
     }
+    setPermissionStatus(Notification.permission);
     if (Notification.permission === "denied") {
       setStatus("denied");
       return;
@@ -59,6 +66,7 @@ export function usePushNotifications(invoiceId: string): UsePushNotificationsRes
     if (!isSupported()) return false;
 
     const permission = await Notification.requestPermission();
+    setPermissionStatus(permission);
     if (permission !== "granted") {
       setStatus(permission === "denied" ? "denied" : "off");
       return false;
@@ -100,5 +108,5 @@ export function usePushNotifications(invoiceId: string): UsePushNotificationsRes
     setStatus("off");
   }, [invoiceId]);
 
-  return { status, subscribe, unsubscribe };
+  return { status, permissionStatus, subscribe, unsubscribe };
 }