feat(app): add maestro tests, download progress, and task hierarchy

Add Maestro E2E test flows for app launch and sidebar interactions. Implement download progress tracking with speed/ETA display in file explorer. Extend task CLI with parent-child hierarchy, body content from stdin, and ancestor context in task show. Fix explorer sidebar gesture to allow horizontal scrolling while preserving close swipe. Replace hardcoded monospace font with Fonts.mono constant. Fix RefreshControl to only show spinner on manual pull-to-refresh.

packages/app/src/components/git-diff-pane.tsx

@@ -1,4 +1,4 @@
-import { useState, useCallback, useEffect, useId } from "react";
+import { useState, useCallback, useEffect, useId, useRef } from "react";
 import {
   View,
   Text,
@@ -8,7 +8,7 @@ import {
   type NativeSyntheticEvent,
   type NativeScrollEvent,
 } from "react-native";
-import { ScrollView } from "react-native-gesture-handler";
+import { ScrollView, type ScrollView as ScrollViewType } from "react-native-gesture-handler";
 import { StyleSheet, useUnistyles } from "react-native-unistyles";
 import { ChevronRight } from "lucide-react-native";
 import { useSessionStore } from "@/stores/session-store";
@@ -19,6 +19,8 @@ import {
   type HighlightToken,
 } from "@/hooks/use-highlighted-diff-query";
 import { useHorizontalScrollOptional } from "@/contexts/horizontal-scroll-context";
+import { useExplorerSidebarAnimation } from "@/contexts/explorer-sidebar-animation-context";
+import { Fonts } from "@/constants/theme";
 
 type HighlightStyle = NonNullable<HighlightToken["style"]>;
 
@@ -120,8 +122,19 @@ function DiffFileSection({ file, defaultExpanded = true, testID }: DiffFileSecti
   const { theme } = useUnistyles();
   const [isExpanded, setIsExpanded] = useState(defaultExpanded);
   const [scrollViewWidth, setScrollViewWidth] = useState(0);
+  const [isAtLeftEdge, setIsAtLeftEdge] = useState(true);
   const horizontalScroll = useHorizontalScrollOptional();
   const scrollId = useId();
+  const scrollViewRef = useRef<ScrollViewType>(null);
+
+  // Get the close gesture ref from animation context (may not be available outside sidebar)
+  let closeGestureRef: React.MutableRefObject<any> | undefined;
+  try {
+    const animation = useExplorerSidebarAnimation();
+    closeGestureRef = animation.closeGestureRef;
+  } catch {
+    // Not inside ExplorerSidebarAnimationProvider, which is fine
+  }
 
   const toggleExpanded = useCallback(() => {
     setIsExpanded((prev) => !prev);
@@ -139,9 +152,12 @@ function DiffFileSection({ file, defaultExpanded = true, testID }: DiffFileSecti
 
   const handleScroll = useCallback(
     (event: NativeSyntheticEvent<NativeScrollEvent>) => {
-      if (!horizontalScroll) return;
       const offsetX = event.nativeEvent.contentOffset.x;
-      horizontalScroll.registerScrollOffset(scrollId, offsetX);
+      // Track if we're at the left edge (with small threshold for float precision)
+      setIsAtLeftEdge(offsetX <= 1);
+      if (horizontalScroll) {
+        horizontalScroll.registerScrollOffset(scrollId, offsetX);
+      }
     },
     [horizontalScroll, scrollId]
   );
@@ -183,6 +199,7 @@ function DiffFileSection({ file, defaultExpanded = true, testID }: DiffFileSecti
       </Pressable>
       {isExpanded && (
         <ScrollView
+          ref={scrollViewRef}
           horizontal
           nestedScrollEnabled
           showsHorizontalScrollIndicator
@@ -192,6 +209,11 @@ function DiffFileSection({ file, defaultExpanded = true, testID }: DiffFileSecti
           onScroll={handleScroll}
           scrollEventThrottle={16}
           onLayout={(e) => setScrollViewWidth(e.nativeEvent.layout.width)}
+          // When at left edge, wait for close gesture to fail before scrolling.
+          // The close gesture fails quickly on leftward swipes (failOffsetX=-10),
+          // so scrolling left works normally. On rightward swipes, close gesture
+          // activates and closes the sidebar.
+          waitFor={isAtLeftEdge && closeGestureRef?.current ? closeGestureRef : undefined}
         >
           <View style={[styles.linesContainer, scrollViewWidth > 0 && { minWidth: scrollViewWidth }]}>
             {file.hunks.map((hunk, hunkIndex) =>
@@ -217,6 +239,20 @@ export function GitDiffPane({ serverId, agentId }: GitDiffPaneProps) {
     serverId,
     agentId,
   });
+  // Track user-initiated refresh to avoid iOS RefreshControl animation on background fetches
+  const [isManualRefresh, setIsManualRefresh] = useState(false);
+
+  const handleRefresh = useCallback(() => {
+    setIsManualRefresh(true);
+    refresh();
+  }, [refresh]);
+
+  // Reset manual refresh flag when fetch completes
+  useEffect(() => {
+    if (!isFetching && isManualRefresh) {
+      setIsManualRefresh(false);
+    }
+  }, [isFetching, isManualRefresh]);
 
   const agentExists = useSessionStore((state) =>
     state.sessions[serverId]?.agents?.has(agentId) ?? false
@@ -239,8 +275,8 @@ export function GitDiffPane({ serverId, agentId }: GitDiffPaneProps) {
       testID="git-diff-scroll"
       refreshControl={
         <RefreshControl
-          refreshing={isFetching && !isLoading}
-          onRefresh={refresh}
+          refreshing={isManualRefresh && isFetching}
+          onRefresh={handleRefresh}
           tintColor={theme.colors.mutedForeground}
           colors={[theme.colors.primary]}
         />
@@ -354,7 +390,7 @@ const styles = StyleSheet.create((theme) => ({
     fontSize: theme.fontSize.sm,
     fontWeight: theme.fontWeight.normal,
     color: theme.colors.foreground,
-    fontFamily: "monospace",
+    fontFamily: Fonts.mono,
     flex: 1,
   },
   newBadge: {
@@ -373,13 +409,13 @@ const styles = StyleSheet.create((theme) => ({
     fontSize: theme.fontSize.sm,
     fontWeight: theme.fontWeight.normal,
     color: theme.colors.palette.green[400],
-    fontFamily: "monospace",
+    fontFamily: Fonts.mono,
   },
   deletions: {
     fontSize: theme.fontSize.sm,
     fontWeight: theme.fontWeight.normal,
     color: theme.colors.palette.red[500],
-    fontFamily: "monospace",
+    fontFamily: Fonts.mono,
   },
   diffContent: {
     borderTopWidth: theme.borderWidth[1],
@@ -398,7 +434,7 @@ const styles = StyleSheet.create((theme) => ({
   },
   diffLineText: {
     fontSize: theme.fontSize.xs,
-    fontFamily: "monospace",
+    fontFamily: Fonts.mono,
     color: theme.colors.foreground,
   },
   addLineContainer: {