Load complete chat history when reaching the top (#2481)

* fix(chat): load older timeline history consistently

Pagination depended on scroll events, so short or compacted initial pages could never request older history. Reevaluate edge visibility as layout and history change, and standardize loading indicators on the canonical app spinner.

* fix(chat): keep older history loading reliably

Use authoritative timeline cursor progress so merged rows cannot stall pagination. Wait for bottom anchoring before evaluating the history edge, and re-arm retries on a fresh upward gesture without automatic failure loops.

packages/app/src/desktop/components/desktop-updates-section.tsx

@@ -1,5 +1,6 @@
+import { LoadingSpinner } from "@/components/ui/loading-spinner";
 import React, { type ReactElement, useCallback, useMemo, useState } from "react";
-import { ActivityIndicator, Alert, Text, View } from "react-native";
+import { Alert, Text, View } from "react-native";
 import * as Clipboard from "expo-clipboard";
 import { useTranslation } from "react-i18next";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
@@ -421,7 +422,7 @@ export function LocalDaemonSection() {
     >
       {isLoading || isLoadingSettings ? (
         <View style={[settingsStyles.card, styles.loadingCard]}>
-          <ActivityIndicator size="small" color={theme.colors.foregroundMuted} />
+          <LoadingSpinner size="small" color={theme.colors.foregroundMuted} />
         </View>
       ) : (
         <>

packages/app/src/desktop/components/pair-device-section.tsx

@@ -1,15 +1,22 @@
+import { LoadingSpinner } from "@/components/ui/loading-spinner";
 import { useCallback, useMemo } from "react";
 import { useTranslation } from "react-i18next";
-import { ActivityIndicator, Image, Text, TextInput, View } from "react-native";
+import { Image, Text, TextInput, View } from "react-native";
 import * as Clipboard from "expo-clipboard";
 import * as QRCode from "qrcode";
 import { useQuery } from "@tanstack/react-query";
-import { StyleSheet, useUnistyles } from "react-native-unistyles";
+import { StyleSheet, useUnistyles, withUnistyles } from "react-native-unistyles";
 import { RotateCw, Copy, Check } from "lucide-react-native";
 import { settingsStyles } from "@/styles/settings";
 import { Button } from "@/components/ui/button";
 import { getDesktopDaemonPairing, shouldUseDesktopDaemon } from "@/desktop/daemon/desktop-daemon";
 import { useState } from "react";
+import type { Theme } from "@/styles/theme";
+
+const ThemedLoadingSpinner = withUnistyles(LoadingSpinner);
+const foregroundMutedColorMapping = (theme: Theme) => ({
+  color: theme.colors.foregroundMuted,
+});
 
 type PairingViewState =
   | { tag: "loading" }
@@ -184,7 +191,7 @@ function PairDeviceBody(props: PairDeviceBodyProps) {
   if (viewState.tag === "loading") {
     return (
       <View style={styles.centered}>
-        <ActivityIndicator size="small" />
+        <ThemedLoadingSpinner size="small" uniProps={foregroundMutedColorMapping} />
         <Text style={styles.hint}>{labels.loadingOffer}</Text>
       </View>
     );
@@ -240,7 +247,7 @@ function PairDeviceQrContent(props: {
   if (props.qrQuery.isError) {
     return <Text style={styles.hint}>{props.unavailableLabel}</Text>;
   }
-  return <ActivityIndicator size="small" />;
+  return <ThemedLoadingSpinner size="small" uniProps={foregroundMutedColorMapping} />;
 }
 
 const styles = StyleSheet.create((theme) => ({