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

frigate/config/config.py

@@ -80,12 +80,12 @@ logger = logging.getLogger(__name__)
 
 yaml = YAML()
 
-DEFAULT_DETECTORS = {
-    "ov": {
-        "type": "openvino",
-        "device": "CPU",
-    }
-}
+# Pydantic field default applied when an existing config omits `detectors:`.
+# Kept as cpu tflite for backwards compatibility with 0.17 configs.
+DEFAULT_DETECTORS = {"cpu": {"type": "cpu"}}
+
+# Used by the openvino branch below and rendered into the new-config YAML
+# template so first-time setups default to openvino on CPU.
 DEFAULT_MODEL = {
     "width": 300,
     "height": 300,
@@ -94,6 +94,7 @@ DEFAULT_MODEL = {
     "path": "/openvino-model/ssdlite_mobilenet_v2.xml",
     "labelmap_path": "/openvino-model/coco_91cl_bkgr.txt",
 }
+NEW_CONFIG_DETECTORS = {"ov": {"type": "openvino", "device": "CPU"}}
 DEFAULT_DETECT_DIMENSIONS = {"width": 1280, "height": 720}
 
 
@@ -109,7 +110,7 @@ DEFAULT_CONFIG = f"""
 mqtt:
   enabled: False
 
-{_render_default_yaml({"detectors": DEFAULT_DETECTORS, "model": DEFAULT_MODEL})}
+{_render_default_yaml({"detectors": NEW_CONFIG_DETECTORS, "model": DEFAULT_MODEL})}
 cameras: {{}}  # No cameras defined, UI wizard should be used
 version: {CURRENT_CONFIG_VERSION}
 """

frigate/test/test_config.py

@@ -64,9 +64,9 @@ class TestConfig(unittest.TestCase):
 
     def test_config_class(self):
         frigate_config = FrigateConfig(**self.minimal)
-        assert "ov" in frigate_config.detectors.keys()
-        assert frigate_config.detectors["ov"].type == DetectorTypeEnum.openvino
-        assert frigate_config.detectors["ov"].model.width == 300
+        assert "cpu" in frigate_config.detectors.keys()
+        assert frigate_config.detectors["cpu"].type == DetectorTypeEnum.cpu
+        assert frigate_config.detectors["cpu"].model.width == 320
 
     @patch("frigate.detectors.detector_config.load_labels")
     def test_detector_custom_model_path(self, mock_labels):