Keep provider settings above the model selector (#2476)

* fix(app): keep provider settings above model selector

Desktop web comboboxes used the browser top layer, so ordinary modal portals could not cover them. Keep web overlays in one relative layer stack while preserving native bottom-sheet stacking.

* fix(app): route overlay keyboard ownership

* fix(app): preserve nested overlay ownership

* fix(app): route command center overlay input

* fix(app): preserve global overlay ancestry

* fix(app): register global dialog hosts

packages/app/src/components/add-project-flow.tsx

@@ -11,7 +11,15 @@ import {
   Search,
   Server,
 } from "lucide-react-native";
-import { useCallback, useEffect, useMemo, useRef, useState, type ComponentType } from "react";
+import {
+  createElement,
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+  type ComponentType,
+} from "react";
 import {
   Modal,
   Pressable,
@@ -66,6 +74,11 @@ import { useFetchQuery } from "@/data/query";
 import { getOpenProjectFailureReason, registerProjectDescriptor } from "@/hooks/open-project";
 import { useIsLocalDaemon, useLocalDaemonServerId } from "@/hooks/use-is-local-daemon";
 import { useCloneGithubProject, useOpenProject } from "@/hooks/use-open-project";
+import {
+  OverlayLayerProvider,
+  useGlobalWebOverlayLayer,
+  useWebOverlayRegistration,
+} from "@/lib/overlay-root";
 import {
   useHosts,
   useHostRuntimeClient,
@@ -769,14 +782,20 @@ export function AddProjectFlow({ request, onClose }: AddProjectFlowProps) {
     [activeIndex, handleBack, rows, submitActive],
   );
 
-  useEffect(() => {
-    if (!isWeb || typeof window === "undefined") return;
-    const listener = (event: KeyboardEvent) => {
-      if (handleKey(event.key)) event.preventDefault();
-    };
-    window.addEventListener("keydown", listener, true);
-    return () => window.removeEventListener("keydown", listener, true);
-  }, [handleKey]);
+  const modalLayer = useGlobalWebOverlayLayer("modal", isWeb);
+  const handleWebOverlayKeyDown = useCallback(
+    (event: KeyboardEvent) => {
+      if (!handleKey(event.key)) return false;
+      event.preventDefault();
+      return true;
+    },
+    [handleKey],
+  );
+  const setWebOverlayScope = useWebOverlayRegistration({
+    active: isWeb,
+    layer: modalLayer,
+    onKeyDown: handleWebOverlayKeyDown,
+  });
 
   const handleNativeKeyPress = useCallback(
     ({ nativeEvent: { key } }: { nativeEvent: { key: string } }) => {
@@ -816,11 +835,12 @@ export function AddProjectFlow({ request, onClose }: AddProjectFlowProps) {
       ? joinDirectoryPath(page.parentPath, page.name.trim())
       : null;
 
-  return (
+  const modal = (
     <Modal visible transparent animationType="fade" onRequestClose={isWeb ? undefined : handleBack}>
       <View style={styles.overlay} testID="add-project-flow">
         <Pressable style={styles.backdrop} onPress={onClose} testID="add-project-flow-backdrop" />
         <View
+          ref={setWebOverlayScope}
           style={styles.panel}
           testID={`add-project-flow-page-${page.kind}`}
           accessibilityLabel={`Add project: ${page.kind}`}
@@ -913,6 +933,8 @@ export function AddProjectFlow({ request, onClose }: AddProjectFlowProps) {
       </View>
     </Modal>
   );
+
+  return createElement(OverlayLayerProvider, { layer: isWeb ? modalLayer : 0 }, modal);
 }
 
 const styles = StyleSheet.create((theme) => ({