Merge detector and model in settings UI (#23216)

* add embedded mode to BaseSection so parents can host the save action

* add optional action slot to current Frigate+ model summary

* add w-full to action slot flex wrapper for explicit width contract

* i18n

* merged detectors and model settings view

* fix document title

* Embed detector form in merged settings view

* add detection model card with tabs and custom model embed

* add Frigate+ model selector with filter popover to merged page

* Add mismatch banner and gate save on detector and model compatibility

* Wire atomic save, restart toast, and undo on detectors and model page

* Clear child pending data on undo

* route merged detectors and model view in settings

* trim Frigate+ page to account-only and remove old detection model view

* basic e2e

* Fix unsaved-changes guard, custom path leak, and post-failure cache resync

* Rename to Detectors and model, float Modified badge, use ConfigMessageBanner for mismatch

* Hide Plus/Custom tabs when Frigate+ is not enabled

* Detect active Plus model via model.plus.id instead of path prefix

* Sync state back to snapshot when child form un-modifies and remount on undo

* Always require restart on save since model changes also need one

* Wrap Frigate+ model selector in SplitCardRow with label and description

* rename tab

* update docs

* sync top-level model with default detector's resolved model

when the user doesn't define a top-level `model:` block, `FrigateConfig.model` stayed at pydantic field defaults (320×320, /labelmap.txt) while the per-detector model picked up `DEFAULT_MODEL` for openvino on cpu (300×300, coco_91cl_bkgr.txt introduced in #23127), causing `RemoteObjectDetector` to fail with "buffer is too small for requested array" because the SHM was sized from the per-detector model but mapped using the top-level one. After the detector loop, copy the first detector's resolved model up to `self.model` so both sides agree on dimensions and labelmap

* revert to cpu detector by default

use openvino cpu for new configs only

* add defaults

web/src/pages/Settings.tsx

@@ -44,7 +44,7 @@ import FrigatePlusSettingsView from "@/views/settings/FrigatePlusSettingsView";
 import MediaSyncSettingsView from "@/views/settings/MediaSyncSettingsView";
 import RegionGridSettingsView from "@/views/settings/RegionGridSettingsView";
 import Go2RtcStreamsSettingsView from "@/views/settings/Go2RtcStreamsSettingsView";
-import SystemDetectionModelSettingsView from "@/views/settings/SystemDetectionModelSettingsView";
+import DetectorsAndModelSettingsView from "@/views/settings/DetectorsAndModelSettingsView";
 import {
   SingleSectionPage,
   type SettingsPageProps,
@@ -127,8 +127,7 @@ const allSettingsViews = [
   "systemEnvironmentVariables",
   "systemTelemetry",
   "systemBirdseye",
-  "systemDetectorHardware",
-  "systemDetectionModel",
+  "systemDetectorsAndModel",
   "systemMqtt",
   "systemGo2rtcStreams",
   "integrationSemanticSearch",
@@ -229,11 +228,6 @@ const SystemEnvironmentVariablesSettingsPage = createSectionPage(
 );
 const SystemTelemetrySettingsPage = createSectionPage("telemetry", "global");
 const SystemBirdseyeSettingsPage = createSectionPage("birdseye", "global");
-const SystemDetectorHardwareSettingsPage = createSectionPage(
-  "detectors",
-  "global",
-);
-const SystemDetectionModelSettingsPage = SystemDetectionModelSettingsView;
 const NotificationsSettingsPage = createSectionPage("notifications", "global");
 
 const SystemMqttSettingsPage = createSectionPage("mqtt", "global");
@@ -399,12 +393,8 @@ const settingsGroups = [
         component: Go2RtcStreamsSettingsView,
       },
       {
-        key: "systemDetectorHardware",
-        component: SystemDetectorHardwareSettingsPage,
-      },
-      {
-        key: "systemDetectionModel",
-        component: SystemDetectionModelSettingsPage,
+        key: "systemDetectorsAndModel",
+        component: DetectorsAndModelSettingsView,
       },
       { key: "systemDatabase", component: SystemDatabaseSettingsPage },
       { key: "systemMqtt", component: SystemMqttSettingsPage },
@@ -558,8 +548,8 @@ const SYSTEM_SECTION_MAPPING: Record<string, SettingsType> = {
   environment_vars: "systemEnvironmentVariables",
   telemetry: "systemTelemetry",
   birdseye: "systemBirdseye",
-  detectors: "systemDetectorHardware",
-  model: "systemDetectionModel",
+  detectors: "systemDetectorsAndModel",
+  model: "systemDetectorsAndModel",
 };
 
 const CAMERA_SECTION_KEYS = new Set<SettingsType>(