fix: prevent Ctrl+R page reload and show platform-aware shortcuts (#58)

Intercept Ctrl+R/Cmd+R in before-input-event to prevent Electron's default page reload. Replace hardcoded macOS shortcut symbols with platform-aware helpers that show Ctrl+ on Windows/Linux.

src/main/index.ts

@@ -481,7 +481,16 @@ function createWindow(): void {
   const ZOOM_OUT_KEYS = new Set(['-', '_']);
   mainWindow.webContents.on('before-input-event', (event, input) => {
     if (!mainWindow || mainWindow.isDestroyed()) return;
-    if (!input.meta || input.type !== 'keyDown') return;
+    if (input.type !== 'keyDown') return;
+
+    // Prevent Electron's default Ctrl+R / Cmd+R page reload so the renderer
+    // keyboard handler can use it as "Refresh Session" (fixes #58).
+    if ((input.control || input.meta) && input.key.toLowerCase() === 'r') {
+      event.preventDefault();
+      return;
+    }
+
+    if (!input.meta) return;
 
     const currentLevel = mainWindow.webContents.getZoomLevel();
 

src/renderer/components/dashboard/DashboardView.tsx

@@ -11,6 +11,7 @@ import React, { useEffect, useMemo, useState } from 'react';
 
 import { api } from '@renderer/api';
 import { useStore } from '@renderer/store';
+import { formatShortcut } from '@renderer/utils/stringUtils';
 import { createLogger } from '@shared/utils/logger';
 import { useShallow } from 'zustand/react/shallow';
 
@@ -75,7 +76,7 @@ const CommandSearch = ({ value, onChange }: Readonly<CommandSearchProps>): React
         <button
           onClick={() => openCommandPalette()}
           className="flex shrink-0 items-center gap-1 transition-opacity hover:opacity-80"
-          title={selectedProjectId ? 'Search in sessions (⌘K)' : 'Search projects (⌘K)'}
+          title={selectedProjectId ? `Search in sessions (${formatShortcut('K')})` : `Search projects (${formatShortcut('K')})`}
         >
           <kbd className="flex h-5 items-center justify-center rounded border border-border bg-surface-overlay px-1.5 text-[10px] font-medium text-text-muted">
             <Command className="size-2.5" />

src/renderer/components/layout/SidebarHeader.tsx

@@ -16,7 +16,7 @@ import { useEffect, useRef, useState } from 'react';
 import { isElectronMode } from '@renderer/api';
 import { HEADER_ROW1_HEIGHT, HEADER_ROW2_HEIGHT } from '@renderer/constants/layout';
 import { useStore } from '@renderer/store';
-import { truncateMiddle } from '@renderer/utils/stringUtils';
+import { formatShortcut, truncateMiddle } from '@renderer/utils/stringUtils';
 import { Check, ChevronDown, GitBranch, PanelLeft } from 'lucide-react';
 import { useShallow } from 'zustand/react/shallow';
 
@@ -369,7 +369,7 @@ export const SidebarHeader = (): React.JSX.Element => {
               backgroundColor: isCollapseHovered ? 'var(--color-surface-raised)' : 'transparent',
             } as React.CSSProperties
           }
-          title="Collapse sidebar (⌘B)"
+          title={`Collapse sidebar (${formatShortcut('B')})`}
         >
           <PanelLeft className="size-4" />
         </button>

src/renderer/components/layout/TabBar.tsx

@@ -14,6 +14,7 @@ import { horizontalListSortingStrategy, SortableContext } from '@dnd-kit/sortabl
 import { isElectronMode } from '@renderer/api';
 import { HEADER_ROW1_HEIGHT } from '@renderer/constants/layout';
 import { useStore } from '@renderer/store';
+import { formatShortcut } from '@renderer/utils/stringUtils';
 import { Bell, PanelLeft, Plus, RefreshCw, Search, Settings } from 'lucide-react';
 import { useShallow } from 'zustand/react/shallow';
 
@@ -330,7 +331,7 @@ export const TabBar = ({ paneId }: TabBarProps): React.JSX.Element => {
             onMouseEnter={() => setRefreshHover(true)}
             onMouseLeave={() => setRefreshHover(false)}
             onClick={handleRefresh}
-            title="Refresh Session (Cmd+R)"
+            title={`Refresh Session (${formatShortcut('R')})`}
           >
             <RefreshCw className="size-4" />
           </button>
@@ -367,7 +368,7 @@ export const TabBar = ({ paneId }: TabBarProps): React.JSX.Element => {
             color: searchHover ? 'var(--color-text)' : 'var(--color-text-muted)',
             backgroundColor: searchHover ? 'var(--color-surface-raised)' : 'transparent',
           }}
-          title="Search (Cmd+K)"
+          title={`Search (${formatShortcut('K')})`}
         >
           <Search className="size-4" />
         </button>

src/renderer/components/layout/TabContextMenu.tsx

@@ -7,6 +7,8 @@
 
 import { useEffect, useRef } from 'react';
 
+import { formatShortcut } from '@renderer/utils/stringUtils';
+
 interface TabContextMenuProps {
   x: number;
   y: number;
@@ -100,13 +102,13 @@ export const TabContextMenu = ({
           onClick={handleClick(onCloseSelectedTabs)}
         />
       ) : (
-        <MenuItem label="Close Tab" shortcut="⌘W" onClick={handleClick(onCloseTab)} />
+        <MenuItem label="Close Tab" shortcut={formatShortcut('W')} onClick={handleClick(onCloseTab)} />
       )}
       <MenuItem label="Close Other Tabs" onClick={handleClick(onCloseOtherTabs)} />
       <div className="mx-2 my-1 border-t" style={{ borderColor: 'var(--color-border)' }} />
       <MenuItem
         label="Split Right"
-        shortcut="⌘\"
+        shortcut={formatShortcut('\\')}
         onClick={handleClick(onSplitRight)}
         disabled={disableSplit}
       />
@@ -127,7 +129,7 @@ export const TabContextMenu = ({
         />
       )}
       <div className="mx-2 my-1 border-t" style={{ borderColor: 'var(--color-border)' }} />
-      <MenuItem label="Close All Tabs" shortcut="⇧⌘W" onClick={handleClick(onCloseAllTabs)} />
+      <MenuItem label="Close All Tabs" shortcut={formatShortcut('W', { shift: true })} onClick={handleClick(onCloseAllTabs)} />
     </div>
   );
 };

src/renderer/components/sidebar/SessionContextMenu.tsx

@@ -7,6 +7,7 @@
 import { useEffect, useRef, useState } from 'react';
 
 import { MAX_PANES } from '@renderer/types/panes';
+import { formatShortcut } from '@renderer/utils/stringUtils';
 import { Check, ClipboardCopy, Eye, EyeOff, Pin, PinOff, Terminal } from 'lucide-react';
 
 interface SessionContextMenuProps {
@@ -98,7 +99,7 @@ export const SessionContextMenu = ({
       }}
     >
       <MenuItem label="Open in Current Pane" onClick={handleClick(onOpenInCurrentPane)} />
-      <MenuItem label="Open in New Tab" shortcut="⌘ Click" onClick={handleClick(onOpenInNewTab)} />
+      <MenuItem label="Open in New Tab" shortcut={`${formatShortcut('')}Click`} onClick={handleClick(onOpenInNewTab)} />
       <div className="mx-2 my-1 border-t" style={{ borderColor: 'var(--color-border)' }} />
       <MenuItem
         label="Split Right and Open"

src/renderer/utils/stringUtils.ts

@@ -2,6 +2,27 @@
  * String utilities for display formatting.
  */
 
+const isMacPlatform =
+  typeof window !== 'undefined' && window.navigator.userAgent.includes('Macintosh');
+
+/** Returns '⌘' on macOS, 'Ctrl' on Windows/Linux. */
+export const modKey = isMacPlatform ? '⌘' : 'Ctrl+';
+
+/** Returns '⇧' on macOS, 'Shift+' on Windows/Linux. */
+export const shiftKey = isMacPlatform ? '⇧' : 'Shift+';
+
+/**
+ * Formats a keyboard shortcut for the current platform.
+ * @example formatShortcut('R') → '⌘R' on Mac, 'Ctrl+R' on Windows/Linux
+ * @example formatShortcut('W', { shift: true }) → '⇧⌘W' on Mac, 'Ctrl+Shift+W' on Windows/Linux
+ */
+export function formatShortcut(key: string, opts?: { shift?: boolean }): string {
+  if (opts?.shift) {
+    return isMacPlatform ? `${shiftKey}${modKey}${key}` : `${modKey}${shiftKey}${key}`;
+  }
+  return `${modKey}${key}`;
+}
+
 /**
  * Truncates a string in the middle to preserve both the beginning and end.
  * Useful for branch names where the unique identifier is often at the end.