merge: integrate main into dev

Resolve 9 merge conflicts preserving both sides' intent:
- nix hash, bootstrap hostnames rename, websocket-server wiring
- session.ts handler dedup, snapshot fallback, worktree registration
- worktree-session git service + script/setup features
- sidebar-workspace-list setup navigation, session-context cleanup
- workspace-registry-bootstrap test kept (code still exists)
- checkout-git test additions from both sides

Post-merge fixes: isPaneFocused prop rename, server type rebuild.

packages/app/src/components/branch-switcher.tsx

@@ -43,12 +43,17 @@ export function BranchSwitcher({
     queryClient,
   });
 
-  if (!currentBranchName) {
-    return (
+  const titleContent = (
+    <>
+      <GitBranch size={14} color={theme.colors.foregroundMuted} />
       <Text testID="workspace-header-title" style={styles.headerTitle} numberOfLines={1}>
         {title}
       </Text>
-    );
+    </>
+  );
+
+  if (!currentBranchName) {
+    return <View style={styles.branchSwitcherTrigger}>{titleContent}</View>;
   }
 
   return (
@@ -63,10 +68,7 @@ export function BranchSwitcher({
         accessibilityRole="button"
         accessibilityLabel={`Current branch: ${currentBranchName}. Press to switch branch.`}
       >
-        <GitBranch size={14} color={theme.colors.foregroundMuted} />
-        <Text testID="workspace-header-title" style={styles.headerTitle} numberOfLines={1}>
-          {title}
-        </Text>
+        {titleContent}
         {!isCompact ? <ChevronDown size={12} color={theme.colors.foregroundMuted} /> : null}
       </Pressable>
       <Combobox
@@ -117,7 +119,10 @@ const styles = StyleSheet.create((theme) => ({
       xs: -theme.spacing[2],
       md: 0,
     },
-    paddingVertical: theme.spacing[1],
+    paddingVertical: {
+      xs: 0,
+      md: theme.spacing[1],
+    },
     paddingHorizontal: theme.spacing[2],
     borderRadius: theme.borderRadius.md,
     flexShrink: 1,

packages/app/src/components/composer.tsx

@@ -63,7 +63,7 @@ type ImageListUpdater = ImageAttachment[] | ((prev: ImageAttachment[]) => ImageA
 interface ComposerProps {
   agentId: string;
   serverId: string;
-  isInputActive: boolean;
+  isPaneFocused: boolean;
   onSubmitMessage?: (payload: MessagePayload) => Promise<void>;
   /** When true, the submit button is enabled even without text or images (e.g. external attachment selected). */
   hasExternalContent?: boolean;
@@ -106,7 +106,7 @@ const MOBILE_MESSAGE_PLACEHOLDER = "Message, @files, /commands";
 export function Composer({
   agentId,
   serverId,
-  isInputActive,
+  isPaneFocused,
   onSubmitMessage,
   hasExternalContent = false,
   allowEmptySubmit = false,
@@ -435,7 +435,7 @@ export function Composer({
 
   const handleKeyboardAction = useCallback(
     (action: KeyboardActionDefinition): boolean => {
-      if (!isInputActive) {
+      if (!isPaneFocused) {
         return false;
       }
 
@@ -479,7 +479,7 @@ export function Composer({
           return false;
       }
     },
-    [isInputActive],
+    [isPaneFocused],
   );
 
   useKeyboardActionHandler({
@@ -493,9 +493,9 @@ export function Composer({
       "message-input.voice-toggle",
       "message-input.voice-mute-toggle",
     ],
-    enabled: isInputActive,
+    enabled: isPaneFocused,
     priority: isMessageInputFocused ? 200 : 100,
-    isActive: () => isInputActive,
+    isActive: () => isPaneFocused,
     handle: handleKeyboardAction,
   });
 
@@ -766,7 +766,7 @@ export function Composer({
               autoFocus={autoFocus && isDesktopWebBreakpoint}
               autoFocusKey={`${serverId}:${agentId}`}
               disabled={isSubmitLoading}
-              isInputActive={isInputActive}
+              isPaneFocused={isPaneFocused}
               leftContent={leftContent}
               beforeVoiceContent={beforeVoiceContent}
               rightContent={rightContent}

packages/app/src/components/file-pane.tsx

@@ -264,6 +264,7 @@ export function FilePane({
       return { file: payload.file ?? null, error: payload.error ?? null };
     },
     staleTime: 5_000,
+    refetchOnMount: true,
   });
 
   return (

packages/app/src/components/message-input.tsx

@@ -42,6 +42,8 @@ import { Tooltip, TooltipContent, TooltipTrigger } from "@/components/ui/tooltip
 import { Shortcut } from "@/components/ui/shortcut";
 import { useWebElementScrollbar } from "@/components/use-web-scrollbar";
 import { useShortcutKeys } from "@/hooks/use-shortcut-keys";
+import { formatShortcut } from "@/utils/format-shortcut";
+import { getShortcutOs } from "@/utils/shortcut-platform";
 import type { MessageInputKeyboardActionKind } from "@/keyboard/actions";
 import {
   markScrollInvestigationEvent,
@@ -81,8 +83,8 @@ export interface MessageInputProps {
   autoFocus?: boolean;
   autoFocusKey?: string;
   disabled?: boolean;
-  /** True when this input is the active composer. Used to gate global hotkeys and stop dictation when hidden. */
-  isInputActive?: boolean;
+  /** True when this composer's pane is focused. Used to gate global hotkeys and stop dictation when hidden. */
+  isPaneFocused?: boolean;
   /** Content to render on the left side of the button row (e.g., AgentStatusBar) */
   leftContent?: React.ReactNode;
   /** Content to render on the right side before the voice button (e.g., context window meter) */
@@ -219,7 +221,7 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(funct
     autoFocus = false,
     autoFocusKey,
     disabled = false,
-    isInputActive = true,
+    isPaneFocused = true,
     leftContent,
     beforeVoiceContent,
     rightContent,
@@ -247,7 +249,9 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(funct
   const voiceMuteToggleKeys = useShortcutKeys("voice-mute-toggle");
   const dictationToggleKeys = useShortcutKeys("dictation-toggle");
   const queueKeys = useShortcutKeys("message-input-queue");
+  const focusInputKeys = useShortcutKeys("focus-message-input");
   const [inputHeight, setInputHeight] = useState(MIN_INPUT_HEIGHT);
+  const [isInputFocused, setIsInputFocused] = useState(false);
   const rootRef = useRef<View | null>(null);
   const inputWrapperRef = useRef<View | null>(null);
   const textInputRef = useRef<TextInput | (TextInput & { getNativeRef?: () => unknown }) | null>(
@@ -441,7 +445,7 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(funct
     onError: handleDictationError,
     canStart: canStartDictation,
     canConfirm: canConfirmDictation,
-    autoStopWhenHidden: { isVisible: isInputActive },
+    autoStopWhenHidden: { isVisible: isPaneFocused },
     enableDuration: true,
   });
 
@@ -1025,10 +1029,12 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(funct
             accessibilityLabel="Message agent..."
             onFocus={() => {
               isInputFocusedRef.current = true;
+              setIsInputFocused(true);
               onFocusChange?.(true);
             }}
             onBlur={() => {
               isInputFocusedRef.current = false;
+              setIsInputFocused(false);
               onFocusChange?.(false);
             }}
             style={[
@@ -1053,6 +1059,11 @@ export const MessageInput = forwardRef<MessageInputRef, MessageInputProps>(funct
             autoFocus={isWeb && autoFocus}
           />
           {inputScrollbar}
+          {isWeb && isPaneFocused && !isInputFocused && !value && focusInputKeys ? (
+            <Text style={styles.focusHintText} pointerEvents="none">
+              {formatShortcut(focusInputKeys[0], getShortcutOs())} to focus
+            </Text>
+          ) : null}
         </View>
 
         {/* Button row */}
@@ -1313,6 +1324,14 @@ const styles = StyleSheet.create(((theme: any) => ({
   textInputScrollWrapper: {
     position: "relative",
   },
+  focusHintText: {
+    position: "absolute",
+    top: 0,
+    right: 0,
+    fontSize: theme.fontSize.xs,
+    color: theme.colors.foregroundMuted,
+    opacity: 0.5,
+  },
   textInput: {
     width: "100%",
     color: theme.colors.foreground,

packages/app/src/components/workspace-setup-dialog.tsx

@@ -279,7 +279,7 @@ export function WorkspaceSetupDialog() {
         <Composer
           agentId={`workspace-setup:${serverId}:${sourceDirectory}`}
           serverId={serverId}
-          isInputActive={true}
+          isPaneFocused={true}
           onSubmitMessage={handleCreateChatAgent}
           isSubmitLoading={pendingAction === "chat"}
           blurOnSubmit={true}