Apply issue #56 field reports: filter direction, drop Blooming_*

Incorporates confirmed answers from the issue thread:
- FilterProgress counts down as the filter wears (100 = fresh), so the
  sensor is renamed filter_progress -> filter_life to match the direction
  instead of implying "usage" like the AC/range_hood filterUsage sensors.
- Blooming_* has no corresponding SmartThings app setting, so it's dropped
  entirely rather than kept as an unexplained diagnostic.
- OptionCode_60282 and the missing humidity sensor are confirmed correct
  as already modeled (not user-facing / genuinely absent on this model).

Five running-state diagnostics dumps (Auto/Sleep/Low/Medium/High) rule out
the original guess that Comode_* is the fan-speed selector -- it reads
'Off' on every one of them. /airflow's speed field doesn't map monotonically
to the five settings either (0 for both Auto and High, 3 for Low/Medium/
Sleep), and all five dumps were captured within about three minutes of each
other -- one poll cycle at this integration's 30s summary interval -- so
fan-speed modeling stays unbuilt pending a cleaner capture.

README.md

@@ -17,9 +17,12 @@ Your state stays on your LAN: HA talks to the appliance over a direct DTLS sessi
 | Type | Registry |
 |---|---|
 | Air conditioner | `by_type/airconditioner.py` |
+| Air purifier | `by_type/air_purifier.py` |
 | Dryer | `by_type/dryer.py` |
 | Oven | `by_type/oven.py` |
-| Range / cooktop-oven combo | `by_type/range.py` |
+| Cooktop (read-only burner status) | `by_type/cooktop.py` |
+| Range hood | `by_type/range_hood.py` |
+| Range | `by_type/range.py` |
 | Dishwasher | `by_type/dishwasher.py` |
 | Refrigerator | `by_type/refrigerator.py` |
 | Washer | `by_type/washer.py` |
@@ -101,7 +104,7 @@ custom_components/localthings/
   diagnostics.py           Redacted diagnostics download (device state + coverage metadata)
   const.py                 Domain, config keys, probe ports
   entity.py                Base entity wiring capability registry -> HA entity
-  sensor.py / binary_sensor.py / switch.py / number.py / select.py / button.py / time.py / climate.py
+  sensor.py / binary_sensor.py / switch.py / number.py / select.py / button.py / time.py / fan.py / climate.py
                             One module per HA platform
   strings.json / translations/   Config-flow copy + entity state translations
   registry/
@@ -113,7 +116,8 @@ custom_components/localthings/
     identity.py              Reads device identity for type detection
     redact.py                 Strips account/identity data before diagnostics leave HA
     capabilities/             Shared + per-family Capability definitions (common, airconditioner,
-                               dryer, oven, dishwasher, fridge, washer, laundry, operational, ignored)
+                               cooktop, range_hood, dryer, oven, dishwasher, fridge, washer,
+                               laundry, operational, ignored)
     by_type/                  One DeviceRegistry per appliance type, composed from capabilities/
 tests/                    Registry composition, discovery, entity descriptors, coordinator/observe
                             behavior, and golden-file regression against captured device dumps
@@ -139,7 +143,7 @@ support for hardware the maintainers don't have.
 1. Get a capture of the appliance's `/device/0` response. The easiest way: add the device to HA (type detection failing is fine) and pull its Diagnostics download from Settings > Devices & Services > the device > the menu > Download diagnostics — it already contains a redacted dump of the device's resources.
 2. Reuse existing `Capability` objects from `registry/capabilities/` wherever the resource matches one already declared. Most `common.py` capabilities (power, kids lock, remote control, alarms, energy/water meters) are shared verbatim across families; add new ones only for resources unique to the new type.
 3. Create `registry/by_type/<name>.py` with a `DeviceRegistry(name=..., capabilities=_build([...]))`. Use `pattern_capabilities` instead of `capabilities` for any resource whose `href` isn't fixed (for example per-compartment fridge resources); see `refrigerator.py` for the pattern.
-4. Register it in `_REGISTRY_BY_KEY` in `registry/by_type/__init__.py`, keyed on the lowercased, space/hyphen-to-underscore-converted suffix of the device's `oneUiVersion` string (see `_type_key()` in that file for the exact transform). If the device never reports `oneUiVersion` — confirmed true for washers — add its consumer-model prefix to `_CONSUMER_PREFIX_TO_KEY` instead, so `for_device_by_model()` can route it.
+4. Register it in `_REGISTRY_BY_KEY` in `registry/by_type/__init__.py`, keyed on the lowercased, space/hyphen-to-underscore-converted suffix of the device's `oneUiVersion` string (see `_type_key()` in that file for the exact transform). If the device never reports `oneUiVersion`, add its consumer-model prefix to `_CONSUMER_PREFIX_TO_KEY` so `for_device_by_model()` can route it. If it also omits `/information/vs/0` (as the verified NA9300K cooktop does), add a distinctive, conservative resource-signature rule to `for_device_by_resources()`.
 5. Add golden-file coverage in `tests/` against a captured `/device/0` dump for the new type.
 
 No config-flow changes are needed. Device-type detection and entity wiring are fully driven by the registry.

custom_components/localthings/config_flow.py

@@ -195,7 +195,9 @@ def _probe_and_validate(host: str, ca_cert_pem: str, ca_key_pem: str) -> dict:
     import cbor2
     from smartthings_local.protocol.dtls_session import DtlsCoapSession
     from .registry.batch import parse_device0_batch
-    from .registry.by_type import for_device, for_device_by_model
+    from .registry.by_type import (
+        for_device, for_device_by_model, for_device_by_resources,
+    )
 
     _LOGGER.debug("Fetching Samsung cloud UUID from %s", _SAMSUNG_CLOUD_HOST)
     try:
@@ -266,7 +268,7 @@ def _probe_and_validate(host: str, ca_cert_pem: str, ca_key_pem: str) -> dict:
             ) or for_device_by_model(
                 info_resource.get('x.com.samsung.da.modelNum', ''),
                 info_resource.get('x.com.samsung.da.description', ''),
-            )
+            ) or for_device_by_resources(resources)
             return {
                 "port": port,
                 "serial": serial,

custom_components/localthings/const.py

@@ -1,6 +1,9 @@
 DOMAIN = "localthings"
 
-PLATFORMS = ["sensor", "binary_sensor", "switch", "number", "select", "button", "time", "climate"]
+PLATFORMS = [
+    "sensor", "binary_sensor", "switch", "number", "select", "button",
+    "time", "climate", "fan",
+]
 
 CONF_HOST         = "host"
 CONF_PORT         = "port"

custom_components/localthings/coordinator.py

@@ -21,7 +21,7 @@ from smartthings_local.protocol.dtls_session import DtlsCoapSession
 from smartthings_local.ocf.state_cache import StateCache
 
 from .registry.batch import parse_device0_batch
-from .registry.by_type import for_device, for_device_by_model
+from .registry.by_type import for_device, for_device_by_model, for_device_by_resources
 from .registry.capabilities.common import remote_control_enabled
 from .registry.discovery import discover, BoundEntity
 from .registry import CAPABILITIES
@@ -295,6 +295,8 @@ class LocalThingsCoordinator(DataUpdateCoordinator[dict[str, Any]]):
                 info.get('x.com.samsung.da.modelNum', ''),
                 info.get('x.com.samsung.da.description', ''),
             )
+        if reg is None:
+            reg = for_device_by_resources(resources)
         unbound: list[str] = []
         if reg is not None:
             self._log.debug("device type: %s (oneUiVersion=%r)", reg.name, one_ui)
@@ -314,7 +316,7 @@ class LocalThingsCoordinator(DataUpdateCoordinator[dict[str, Any]]):
         self.device_serial = serial
 
         ident = self._identity
-        device_type = reg.name.title() if reg else 'Appliance'
+        device_type = reg.name.replace('_', ' ').title() if reg else 'Appliance'
         model_num = info.get('x.com.samsung.da.modelNum', '')
         model = model_num.split('|', 1)[0] if model_num else (ident.model if ident else '')
         name  = f"Samsung {device_type} ({model})" if model else f"Samsung {device_type}"

custom_components/localthings/fan.py

@@ -0,0 +1,122 @@
+"""Fan platform for Samsung range hoods."""
+
+from __future__ import annotations
+
+from homeassistant.components.fan import FanEntity, FanEntityFeature
+from homeassistant.config_entries import ConfigEntry
+from homeassistant.core import HomeAssistant
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.util.percentage import (
+    ordered_list_item_to_percentage,
+    percentage_to_ordered_list_item,
+)
+
+from .const import DOMAIN
+from .coordinator import LocalThingsCoordinator
+from .entity import LocalThingsEntity, _is_included
+from .registry.entities import FanDesc
+
+
+POWER_HREF = '/power/0'
+POWER_VS_HREF = '/power/vs/0'
+_FAN_SPEED_FIELD = 'x.com.samsung.da.hood.fanSpeed'
+_SUPPORTED_FAN_SPEED_FIELD = 'x.com.samsung.da.hood.supportedFanSpeed'
+
+
+async def async_setup_entry(
+    hass: HomeAssistant,
+    entry: ConfigEntry,
+    async_add_entities: AddEntitiesCallback,
+) -> None:
+    coordinator: LocalThingsCoordinator = hass.data[DOMAIN][entry.entry_id]
+    async_add_entities(
+        LocalThingsRangeHoodFan(coordinator, bound)
+        for bound in coordinator.bound
+        if isinstance(bound.desc, FanDesc) and _is_included(bound, coordinator)
+    )
+
+
+class LocalThingsRangeHoodFan(LocalThingsEntity, FanEntity):
+    """A hood fan combining sibling power and fan-speed resources."""
+
+    _enable_turn_on_off_backwards_compatibility = False
+    _attr_supported_features = (
+        FanEntityFeature.SET_SPEED
+        | FanEntityFeature.TURN_ON
+        | FanEntityFeature.TURN_OFF
+    )
+
+    def __init__(self, coordinator: LocalThingsCoordinator, bound) -> None:
+        super().__init__(coordinator, bound)
+        self._attr_name = None
+
+    def _rep(self, href: str) -> dict:
+        return self.coordinator.resource(href) or {}
+
+    def _all_speed_codes(self) -> list[str]:
+        rep = self._rep(self._bound.href)
+        return [str(value) for value in rep.get(_SUPPORTED_FAN_SPEED_FIELD, ())]
+
+    def _active_speed_codes(self) -> list[str]:
+        # Power is carried by the separate /power resource.  fanSpeed retains
+        # the selected setting while power is off (as the lamp's `current`
+        # field does), so every advertised code is an active ordered speed.
+        return self._all_speed_codes()
+
+    def _power_payload(self, enabled: bool) -> tuple[str, bool, str]:
+        """Target whichever power resource this hood actually exposes."""
+        resources = self.coordinator.last_resources
+        target = POWER_HREF if POWER_HREF in resources else POWER_VS_HREF
+        return 'power', enabled, target
+
+    @property
+    def is_on(self) -> bool:
+        rep = self._rep(POWER_HREF)
+        if 'value' in rep:
+            return bool(rep.get('value'))
+        return str(
+            self._rep(POWER_VS_HREF).get('x.com.samsung.da.power', '')
+        ).lower() == 'on'
+
+    @property
+    def speed_count(self) -> int:
+        return len(self._active_speed_codes())
+
+    @property
+    def percentage(self) -> int | None:
+        if not self.is_on:
+            return 0
+        codes = self._active_speed_codes()
+        current = str(self._rep(self._bound.href).get(_FAN_SPEED_FIELD, ''))
+        if not codes or current not in codes:
+            return None
+        return ordered_list_item_to_percentage(codes, current)
+
+    async def async_turn_on(
+        self, percentage: int | None = None, preset_mode: str | None = None,
+        **kwargs,
+    ) -> None:
+        await self.coordinator.async_send_command(
+            self._bound, self._power_payload(True),
+        )
+        if percentage is not None:
+            await self.async_set_percentage(percentage)
+
+    async def async_turn_off(self, **kwargs) -> None:
+        await self.coordinator.async_send_command(
+            self._bound, self._power_payload(False),
+        )
+
+    async def async_set_percentage(self, percentage: int) -> None:
+        if percentage <= 0:
+            await self.async_turn_off()
+            return
+        codes = self._active_speed_codes()
+        if not codes:
+            return
+        if not self.is_on:
+            await self.coordinator.async_send_command(
+                self._bound, self._power_payload(True),
+            )
+        code = percentage_to_ordered_list_item(codes, percentage)
+        await self.coordinator.async_send_command(self._bound, ('speed', code))

custom_components/localthings/registry/by_type/__init__.py

@@ -2,18 +2,29 @@
 from typing import Optional
 
 from ._base import DeviceRegistry
-from . import airconditioner, dishwasher, dryer, oven, range as _range, refrigerator, washer
+from . import (
+    air_purifier, airconditioner, cooktop, dishwasher, dryer, oven,
+    range as _range, range_hood, refrigerator, washer,
+)
 
-__all__ = ['DeviceRegistry', '_type_key', 'for_device', 'for_device_by_model']
+__all__ = [
+    'DeviceRegistry', '_type_key', 'for_device', 'for_device_by_model',
+    'for_device_by_resources',
+]
 
 
 _REGISTRY_BY_KEY: dict[str, DeviceRegistry] = {
+    'air_purifier': air_purifier.REGISTRY,
+    'airpurifier': air_purifier.REGISTRY,
     'airconditioner': airconditioner.REGISTRY,
     'air_conditioner': airconditioner.REGISTRY,
+    'cooktop': cooktop.REGISTRY,
     'dishwasher': dishwasher.REGISTRY,
     'dryer': dryer.REGISTRY,
     'oven': oven.REGISTRY,
+    'hood': range_hood.REGISTRY,
     'range': _range.REGISTRY,
+    'range_hood': range_hood.REGISTRY,
     'refrigerator': refrigerator.REGISTRY,
     'washer': washer.REGISTRY,
 }
@@ -102,9 +113,52 @@ def for_device_by_model(model_num: str, description: str) -> Optional[DeviceRegi
     # 'P' sits between the underscore and 'RAC' in that token).
     if key is None and '_RAC_' in (model_num or ''):
         key = 'airconditioner'
+    # Air purifiers (e.g. ARTIK051_TVTL_18K, issue #56) report no
+    # oneUiVersion either, and carry the '_TVTL_' board-family token.
+    if key is None and '_TVTL_' in (model_num or ''):
+        key = 'air_purifier'
+    model_identity = f'{model_num} {description}'.upper()
+    if key is None and ('_COOKTOP' in model_identity or '_GB_CT_' in model_identity):
+        key = 'cooktop'
+    if key is None and model_identity.startswith('AHD-'):
+        key = 'range_hood'
     # Range/cooktop-oven combos (e.g. TP1X_DA-KS-RANGE-0102X, issue #44) --
     # like the RAC/PRAC air conditioners above, these report no oneUiVersion
     # and don't match the washer/dryer/dishwasher consumer-prefix map either.
     if key is None and '-RANGE-' in (model_num or '').upper():
         key = 'range'
+    # Wall ovens (e.g. TP1X_DA-KS-OVEN-0107X, issue #55) -- same board-family
+    # naming as the range combo above, minus the burners; also reports no
+    # oneUiVersion and doesn't match the washer/dryer/dishwasher prefix map.
+    if key is None and '-OVEN-' in (model_num or '').upper():
+        key = 'oven'
     return _REGISTRY_BY_KEY.get(key) if key else None
+
+
+def for_device_by_resources(resources: dict[str, dict]) -> Optional[DeviceRegistry]:
+    """Detect a device family from a distinctive local-resource signature.
+
+    Some newer cooktops omit both ``oneUiVersion`` and
+    ``/information/vs/0``.  Their mode resource still identifies them: it
+    contains a DeviceType option and multiple per-burner OperationState
+    options.  Require both shapes so an oven's unrelated ``/mode/vs/0`` is
+    not misclassified.
+    """
+    mode = resources.get('/mode/vs/0', {})
+    options = mode.get('x.com.samsung.da.options') or ()
+    has_device_type = any(
+        isinstance(option, str) and option.startswith('DeviceType_')
+        for option in options
+    )
+    operation_states = sum(
+        1 for option in options
+        if isinstance(option, str) and option.startswith('OperationState')
+    )
+    if has_device_type and operation_states >= 2:
+        return _REGISTRY_BY_KEY['cooktop']
+    if (
+        '/hood/fanspeed/vs/0' in resources
+        and '/hood/lamp/vs/0' in resources
+    ):
+        return _REGISTRY_BY_KEY['range_hood']
+    return None

custom_components/localthings/registry/by_type/air_purifier.py

@@ -0,0 +1,25 @@
+"""Air-purifier device registry (Samsung ARTIK051_TVTL-class, issue #56).
+
+Reports no oneUiVersion; resolved via for_device_by_model's '_TVTL_' modelNum
+token (see registry.py). Reuses dishwasher.DIAGNOSIS for /diagnosis/vs/0
+(identical field/write contract).
+"""
+from ..capabilities import air_purifier, common, dishwasher, ignored
+from ._base import DeviceRegistry, _build
+
+REGISTRY = DeviceRegistry(
+    name='air_purifier',
+    capabilities=_build([
+        *ignored.IGNORED,
+        *common.UNIVERSAL,
+        *common.POWER,
+        dishwasher.DIAGNOSIS,
+        air_purifier.AIR_QUALITY,
+        air_purifier.FILTER,
+        air_purifier.DEVICE_ACTIVE,
+        air_purifier.AIRFLOW_GENERIC,
+        air_purifier.AIRFLOW_VS_FALLBACK,
+        air_purifier.MODE,
+        *air_purifier.COVERAGE,
+    ]),
+)

custom_components/localthings/registry/by_type/cooktop.py

@@ -0,0 +1,17 @@
+"""Cooktop device registry."""
+
+from ..capabilities import common, cooktop, ignored
+from ._base import DeviceRegistry, _build
+
+
+REGISTRY = DeviceRegistry(
+    name='cooktop',
+    capabilities=_build([
+        *ignored.IGNORED,
+        cooktop.COOKTOP_POWER,
+        cooktop.COOKTOP_MODE,
+        cooktop.COOKTOP_CONNECTED,
+        cooktop.PAIRED_HOOD_STATUS,
+        common.FIRMWARE_UPDATE,
+    ]),
+)

custom_components/localthings/registry/by_type/range_hood.py

@@ -0,0 +1,22 @@
+"""Range-hood device registry."""
+
+from ..capabilities import common, ignored, range_hood
+from ._base import DeviceRegistry, _build
+
+
+REGISTRY = DeviceRegistry(
+    name='range_hood',
+    capabilities=_build([
+        *ignored.IGNORED,
+        range_hood.HOOD_ALARMS,
+        common.ENERGY_METER,
+        common.FIRMWARE_UPDATE,
+        range_hood.HOOD_FAN,
+        range_hood.HOOD_LAMP,
+        range_hood.HOOD_FILTER,
+        range_hood.AIR_QUALITY,
+        range_hood.AIR_LEVEL_CHECK,
+        range_hood.AUTO_VENTILATION,
+        *range_hood.COVERAGE,
+    ]),
+)

custom_components/localthings/registry/capabilities/__init__.py

@@ -1,4 +1,7 @@
-from . import common, dishwasher, fridge, ignored, laundry, operational, oven
+from . import (
+    common, cooktop, dishwasher, fridge, ignored, laundry, operational, oven,
+    range_hood,
+)
 from ..capability import Capability
 
 

custom_components/localthings/registry/capabilities/air_purifier.py

@@ -0,0 +1,170 @@
+"""Capabilities for the Samsung ARTIK051_TVTL-class air purifier family
+(model AX60R5080WD/SE, issue #56).
+
+Power, kids-lock, remote-control, alarms, and the energy meter are the shared
+common.py capabilities (this family exposes the standard /power/0+/power/vs/0
+pair and /alarms/vs/0, /energy/consumption/vs/0). /diagnosis/vs/0 reuses
+dishwasher.DIAGNOSIS -- identical field/write contract
+(x.com.samsung.da.diagnosisStart, 'Ready' on both dumps).
+
+/mode/vs/0's x.com.samsung.da.options array packs multiple independent
+'<Prefix>_<value>' flags into one list -- the same packed-list/RMW contract
+laundry.py's option_value/replace_in_options already model for
+/course/vs/0's options[] (reused directly below, just against this family's
+own href). Per issue #56's follow-up (five diagnostics dumps captured with
+the physical unit set to Auto/Sleep/Low/Medium/High):
+  Light_On / Light_Off  -- a plain on/off flag; MODE below models it as a
+                            real switch, RMW-replacing just that one entry.
+  Comode_Off            -- read 'Off' on *every* one of the five dumps,
+                            including High/Low/Medium/Auto -- confirms this
+                            is NOT the fan-speed selector (ruling out the
+                            original guess); exposed read-only since its
+                            actual purpose is still unconfirmed.
+  OptionCode_60282       -- confirmed opaque/not user-facing in the
+                            SmartThings app; not modeled (same treatment as
+                            range_hood's OptionCode_* token on the same
+                            href).
+  Blooming_*             -- confirmed to have no corresponding SmartThings
+                            app setting; dropped entirely rather than kept
+                            as an unexplained diagnostic (it did track 1:1
+                            with Sleep mode across the five dumps -- 0 in
+                            Sleep, 6 otherwise -- so it's plausibly an
+                            automatic side effect of sleep mode, e.g. a
+                            display-dimming level, but that's still a guess).
+
+/airflow/0 and /airflow/vs/0's `speed` still isn't modeled as a real
+fan-speed control: across the same five dumps it read 0 for both Auto *and*
+High, and 3 for Low/Medium/*and* Sleep -- not a monotonic mapping to any
+selectable level, and the dumps were all captured within about three minutes
+of each other (only one poll cycle apart at this integration's 30s summary
+interval), so the values may not have settled after each change before the
+diagnostics snapshot was taken. Exposed read-only pending a confirmed,
+stable capture -- see the issue #56 discussion for what's needed.
+"""
+from ..capability import Capability
+from ..entities import BinarySensorDesc, SensorDesc, SwitchDesc
+from .common import int_or_none, sensor_item_value
+from .laundry import bool_option_exists, bool_option_value, option_value, replace_in_options
+
+_AIR_QUALITY_SENSORS = (
+    ('dust', 'Dust', 'mdi:blur', 'Dust'),
+    ('fine_dust', 'Fine dust', 'mdi:blur', 'FineDust'),
+    ('super_fine_dust', 'Super fine dust', 'mdi:blur', 'SuperFineDust'),
+    ('odor', 'Odor', 'mdi:scent', 'Odor'),
+    ('clean_level', 'Clean level', 'mdi:air-filter', 'CleanLevel'),
+)
+
+AIR_QUALITY = Capability(
+    href='/sensors/vs/0',
+    poll_tier='warm',
+    entities=tuple(
+        SensorDesc(key=key, field='x.com.samsung.da.items', name=name, icon=icon,
+                   value_fn=lambda items, t=sensor_type: sensor_item_value(items, t))
+        for key, name, icon, sensor_type in _AIR_QUALITY_SENSORS
+    ),
+)
+
+
+def _consumable_state(items, name):
+    """Read a `/consumable/vs/0`-style items[] entry -- {name, state} pairs,
+    unlike AIR_QUALITY's {type, value} shape above."""
+    for item in items or ():
+        if isinstance(item, dict) and item.get('x.com.samsung.da.name') == name:
+            return item.get('x.com.samsung.da.state')
+    return None
+
+
+# FilterProgress is a 0-100 percentage counting down as the filter wears --
+# confirmed via issue #56: the SmartThings app shows "Filter needs changing"
+# once this reaches the low end, so 100 means a fresh filter, not "100% worn".
+# Named 'Filter life' (matching the direction) rather than the 'Filter usage'
+# convention used elsewhere in this codebase (AC/range_hood's filterUsage
+# counts up instead), so the two aren't confused.
+FILTER = Capability(
+    href='/consumable/vs/0',
+    poll_tier='cold',
+    entities=(
+        SensorDesc(key='filter_life', field='x.com.samsung.da.items',
+                   name='Filter life', unit='%', state_class='measurement',
+                   icon='mdi:air-filter', entity_category='diagnostic',
+                   value_fn=lambda items: int_or_none(
+                       _consumable_state(items, 'FilterProgress'))),
+    ),
+)
+
+DEVICE_ACTIVE = Capability(
+    href='/devicespecificinfo/vs/0',
+    poll_tier='cold',
+    entities=(
+        BinarySensorDesc(key='device_active', field='x.com.samsung.da.deviceActive',
+                          name='Device active', icon='mdi:check-network-outline',
+                          entity_category='diagnostic',
+                          value_fn=lambda v: bool(v)),
+    ),
+)
+
+# OCF-native / vendor pair for fan speed+direction -- see module docstring for
+# why these are read-only for now.
+AIRFLOW_GENERIC = Capability(
+    href='/airflow/0',
+    poll_tier='warm',
+    entities=(
+        SensorDesc(key='fan_speed_level', field='speed',
+                   name='Fan speed level', icon='mdi:fan',
+                   state_class='measurement', entity_category='diagnostic'),
+        SensorDesc(key='fan_direction', field='direction',
+                   name='Fan direction', icon='mdi:rotate-3d-variant',
+                   entity_category='diagnostic'),
+    ),
+)
+
+AIRFLOW_VS_FALLBACK = Capability(
+    href='/airflow/vs/0',
+    match_fn=lambda rep, resources: '/airflow/0' not in resources,
+    poll_tier='warm',
+    entities=(
+        SensorDesc(key='fan_speed_level', field='x.com.samsung.da.speedLevel',
+                   name='Fan speed level', icon='mdi:fan',
+                   state_class='measurement', entity_category='diagnostic',
+                   value_fn=int_or_none),
+        SensorDesc(key='fan_direction', field='x.com.samsung.da.direction',
+                   name='Fan direction', icon='mdi:rotate-3d-variant',
+                   entity_category='diagnostic'),
+    ),
+)
+
+
+def _light_write(payload, rep, href=None):
+    opts = list(rep.get('x.com.samsung.da.options') or [])
+    return ['mode', 'vs', '0'], {
+        'x.com.samsung.da.options': replace_in_options(opts, 'Light', payload),
+    }
+
+
+MODE = Capability(
+    href='/mode/vs/0',
+    poll_tier='warm',
+    entities=(
+        SwitchDesc(key='display_light', name='Display light', icon='mdi:led-on',
+                   entity_category='config',
+                   rep_fn=bool_option_value('Light'),
+                   exists_fn=bool_option_exists('Light'),
+                   write_fn=_light_write),
+        # Read-only -- confirmed NOT the fan-speed selector (see module
+        # docstring), actual purpose still unconfirmed.
+        SensorDesc(key='operating_mode', name='Operating mode', icon='mdi:fan',
+                   entity_category='diagnostic',
+                   rep_fn=lambda rep: option_value(rep.get('x.com.samsung.da.options'), 'Comode'),
+                   exists_fn=bool_option_exists('Comode')),
+    ),
+)
+
+# /humidity/0 and /humidity/vs/0 are empty {} on every dump seen, and issue
+# #56 confirms this model has no humidity sensor at all (dust/odor only) --
+# covered here (not globally, per ignored.py's module docstring) since those
+# hrefs collide with fridge/AC schemas elsewhere. Same two hrefs and
+# reasoning as airconditioner.py's _AC_IGNORED.
+COVERAGE = [
+    Capability(href='/humidity/0'),
+    Capability(href='/humidity/vs/0'),
+]

custom_components/localthings/registry/capabilities/common.py

@@ -23,6 +23,13 @@ def _num(v):
         return None
 
 
+def int_or_none(v):
+    try:
+        return int(v)
+    except (TypeError, ValueError):
+        return None
+
+
 def clamp_power(v):
     n = _num(v)
     return 0.0 if (n is not None and n < 0) else n
@@ -58,6 +65,26 @@ def _active_alarm_codes(items):
     return ', '.join(codes) if codes else 'none'
 
 
+def sensor_item_value(items, sensor_type, index=0):
+    """Pull one reading out of a `/sensors/vs/0`-style items[] list -- each
+    item is `{type, value: [...]}`; `index` picks which slot of a possibly
+    multi-value reading to read (index 0 is the raw measurement on every
+    family seen so far). Shared by range_hood.AIR_QUALITY and
+    air_purifier.AIR_QUALITY, which read the same resource shape."""
+    for item in items or ():
+        if not isinstance(item, dict):
+            continue
+        if item.get('x.com.samsung.da.type') != sensor_type:
+            continue
+        values = item.get('x.com.samsung.da.value') or ()
+        if index < len(values):
+            try:
+                return int(values[index])
+            except (TypeError, ValueError):
+                return None
+    return None
+
+
 # OCF-native / vendor '-vs' fallback pairs for power, kids-lock, remote control.
 #
 # These three controls exist as both a standard OCF resource (/power/0,

custom_components/localthings/registry/capabilities/cooktop.py

@@ -0,0 +1,195 @@
+"""Read-only capabilities for Samsung cooktops.
+
+The first verified device is an NA9300K-class five-burner gas cooktop.  Its
+local OCF API reports burner state as strings embedded in the
+``x.com.samsung.da.options`` array on ``/mode/vs/0``.  Heat-producing controls
+are intentionally not exposed: the local write contract is unverified and a
+cooktop must not be remotely ignited by an automation.
+"""
+
+import re
+
+from ..capability import Capability
+from ..entities import BinarySensorDesc, SensorDesc
+
+
+_INACTIVE_OPERATION_STATES = {'Off', 'Ready'}
+
+
+def _option_value(options, prefix):
+    """Return the value from the first ``<prefix>_<value>`` option."""
+    marker = prefix + '_'
+    for option in options or ():
+        if isinstance(option, str) and option.startswith(marker):
+            return option[len(marker):]
+    return None
+
+
+def _operation_slots(options) -> tuple[int, ...]:
+    """Return the numeric burner slots advertised in an options array."""
+    slots = set()
+    for option in options or ():
+        if not isinstance(option, str):
+            continue
+        match = re.match(r'^OperationState(\d+)_', option)
+        if match:
+            slots.add(int(match.group(1)))
+    return tuple(sorted(slots))
+
+
+def _any_burner_active(options):
+    """True when any advertised burner slot is not idle."""
+    states = [
+        _option_value(options, f'OperationState{slot}')
+        for slot in _operation_slots(options)
+    ]
+    states = [state for state in states if state is not None]
+    return any(state not in _INACTIVE_OPERATION_STATES for state in states)
+
+
+def _int_or_none(value):
+    try:
+        return int(value)
+    except (TypeError, ValueError):
+        return None
+
+
+COOKTOP_POWER = Capability(
+    href='/power/vs/0',
+    poll_tier='hot',
+    entities=(
+        BinarySensorDesc(
+            key='power_state',
+            field='x.com.samsung.da.power',
+            name='Power state',
+            device_class='power',
+            icon='mdi:stove',
+            value_fn=lambda value: str(value).lower() == 'on',
+        ),
+    ),
+)
+
+
+# The verified NA9300K exposes physical slots 0, 1, 3, 4, and 5.  Declare a
+# generous static superset so variants with other layouts are not silently
+# omitted; exists_fn hides every slot the live options array does not report.
+# Replace this bound with data-driven entity generation when #31 lands.
+_SUPPORTED_OPERATION_SLOTS = tuple(range(8))
+
+COOKTOP_MODE = Capability(
+    href='/mode/vs/0',
+    poll_tier='hot',
+    entities=(
+        BinarySensorDesc(
+            key='any_burner_active',
+            field='x.com.samsung.da.options',
+            name='Any burner active',
+            device_class='running',
+            icon='mdi:fire',
+            value_fn=_any_burner_active,
+        ),
+        *(
+            SensorDesc(
+                key=f'burner_{slot}_state',
+                field='x.com.samsung.da.options',
+                name=f'Burner {slot} state',
+                icon='mdi:gas-burner',
+                value_fn=lambda options, slot=slot: _option_value(
+                    options, f'OperationState{slot}'
+                ),
+                exists_fn=lambda rep, resources, slot=slot: (
+                    not rep or _option_value(
+                        rep.get('x.com.samsung.da.options'),
+                        f'OperationState{slot}',
+                    ) is not None
+                ),
+            )
+            for slot in _SUPPORTED_OPERATION_SLOTS
+        ),
+        SensorDesc(
+            key='main_timer_state',
+            field='x.com.samsung.da.options',
+            name='Timer state',
+            icon='mdi:timer-outline',
+            value_fn=lambda options: _option_value(options, 'MainTimerState'),
+        ),
+        SensorDesc(
+            key='main_timer_current',
+            field='x.com.samsung.da.options',
+            name='Timer current value',
+            icon='mdi:timer-sand',
+            enabled_default=False,
+            value_fn=lambda options: _int_or_none(
+                _option_value(options, 'MainTimerCurrent')
+            ),
+        ),
+    ),
+)
+
+
+COOKTOP_CONNECTED = Capability(
+    href='/connected/vs/0',
+    poll_tier='warm',
+    entities=(
+        BinarySensorDesc(
+            key='cloud_connected',
+            field='x.com.samsung.da.connected',
+            name='Cloud connected',
+            device_class='connectivity',
+            entity_category='diagnostic',
+            value_fn=lambda value: str(value).lower() == 'on',
+        ),
+    ),
+)
+
+
+PAIRED_HOOD_STATUS = Capability(
+    href='/bluetooth/hood/status/vs/0',
+    poll_tier='hot',
+    entities=(
+        BinarySensorDesc(
+            key='paired_hood_connected',
+            field='connectionState',
+            name='Paired hood connected',
+            device_class='connectivity',
+            value_fn=lambda value: str(value).lower() == 'connected',
+        ),
+        BinarySensorDesc(
+            key='paired_hood_power',
+            field='power',
+            name='Paired hood power',
+            device_class='running',
+            value_fn=lambda value: str(value).lower() == 'on',
+        ),
+        SensorDesc(
+            key='paired_hood_fan_speed',
+            field='fanSpeed',
+            name='Paired hood fan speed',
+            icon='mdi:fan',
+            value_fn=_int_or_none,
+        ),
+        BinarySensorDesc(
+            key='paired_hood_light',
+            field='lampState',
+            name='Paired hood light',
+            device_class='light',
+            value_fn=lambda value: str(value).lower() == 'on',
+        ),
+        SensorDesc(
+            key='paired_hood_model',
+            field='micomModelId',
+            name='Paired hood model',
+            icon='mdi:information-outline',
+            entity_category='diagnostic',
+            enabled_default=False,
+        ),
+        SensorDesc(
+            key='paired_hood_firmware',
+            field='firmwareVersion',
+            name='Paired hood firmware',
+            icon='mdi:chip',
+            entity_category='diagnostic',
+            enabled_default=False,
+        ),
+    ),
+)

custom_components/localthings/registry/capabilities/operational.py

@@ -70,6 +70,15 @@ def _finish_time(remaining_str):
         return None
 
 
+# Shared by dryer/dishwasher/oven/washer -- oven.py imports this directly
+# rather than keeping its own copy, since both wrote the identical
+# state='Ready' RMW.
+STOP_BUTTON = ButtonDesc(key='stop', field='', name='Stop', payload='Ready',
+                         icon='mdi:stop',
+                         write_fn=lambda p, rep, href=None: (
+                             ['operational', 'state', 'vs', '0'],
+                             {'x.com.samsung.da.state': p}))
+
 OPERATIONAL_STATE = Capability(
     href='/operational/state/vs/0',
     poll_tier='hot',
@@ -83,8 +92,12 @@ OPERATIONAL_STATE = Capability(
         # Harmless for non-oven appliances — just an extra bool in state.
         # Samsung firmware keeps state='Run' after progress reaches 'Finish',
         # so we also gate on progress to avoid a stuck 'Running' indication.
+        # Named 'Running' rather than 'Cycle active' -- this href (and the
+        # start/pause/stop buttons below) is shared across the dryer/
+        # dishwasher/oven/washer families, and 'cycle' is laundry-specific
+        # vocabulary that doesn't fit an oven's bake/roast/etc.
         BinarySensorDesc(key='cycle_active', device_class='running',
-                         name='Cycle active',
+                         name='Running',
                          rep_fn=lambda rep: (
                              _SAMSUNG_STATE_TO_OCF.get(rep.get('x.com.samsung.da.state')) == 'active'
                              and rep.get('x.com.samsung.da.progress') != 'Finish'
@@ -119,20 +132,16 @@ OPERATIONAL_STATE = Capability(
                    write_fn=lambda p, rep, href=None: (
                        ['operational', 'state', 'vs', '0'],
                        {_delay_field(rep): _format_delay(p)})),
-        ButtonDesc(key='start', field='', name='Start cycle', payload='Run',
+        ButtonDesc(key='start', field='', name='Start', payload='Run',
                    icon='mdi:play',
                    write_fn=lambda p, rep, href=None: (
                        ['operational', 'state', 'vs', '0'],
                        {'x.com.samsung.da.state': p})),
-        ButtonDesc(key='pause', field='', name='Pause cycle', payload='Pause',
+        ButtonDesc(key='pause', field='', name='Pause', payload='Pause',
                    icon='mdi:pause',
                    write_fn=lambda p, rep, href=None: (
                        ['operational', 'state', 'vs', '0'],
                        {'x.com.samsung.da.state': p})),
-        ButtonDesc(key='stop', field='', name='Stop cycle', payload='Ready',
-                   icon='mdi:stop',
-                   write_fn=lambda p, rep, href=None: (
-                       ['operational', 'state', 'vs', '0'],
-                       {'x.com.samsung.da.state': p})),
+        STOP_BUTTON,
     ),
 )

custom_components/localthings/registry/capabilities/oven.py

@@ -26,10 +26,10 @@ from datetime import datetime, timezone, timedelta
 
 from ..capability import Capability
 from ..entities import (
-    BinarySensorDesc, ButtonDesc, NumberDesc, SelectDesc, SensorDesc,
-    SwitchDesc,
+    BinarySensorDesc, NumberDesc, SelectDesc, SensorDesc, SwitchDesc,
 )
 from .common import normalize_temp_unit
+from .operational import STOP_BUTTON
 
 # ---------------------------------------------------------------------------
 # Constants
@@ -166,12 +166,6 @@ def _cook_time_write(p, rep, href=None):
     }
 
 
-def _stop_write(p, rep, href=None):
-    return ['operational', 'state', 'vs', '0'], {
-        'x.com.samsung.da.state': 'Ready',
-    }
-
-
 def _oven_mode_write(p, rep, href=None):
     if p not in _OVEN_MODES:
         return None
@@ -237,7 +231,7 @@ OVEN_OPERATIONAL_STATE = Capability(
                    device_class='enum', options=('idle', 'active', 'pause'),
                    translation_key='machine_state', value_fn=_to_ocf),
         BinarySensorDesc(key='cycle_active', field='x.com.samsung.da.state',
-                         name='Cycle active', device_class='running',
+                         name='Running', device_class='running',
                          value_fn=lambda v: _SAMSUNG_STATE_TO_OCF.get(v) == 'active'),
         SensorDesc(key='progress_percentage',
                    field='x.com.samsung.da.progressPercentage',
@@ -254,8 +248,7 @@ OVEN_OPERATIONAL_STATE = Capability(
                    name='Cook time', unit='min', native_min=0, native_max=1439,
                    step=1.0, icon='mdi:timer', value_fn=_op_minutes,
                    write_fn=_cook_time_write),
-        ButtonDesc(key='stop', field='', name='Stop cycle', icon='mdi:stop',
-                   payload='Stop', write_fn=_stop_write),
+        STOP_BUTTON,
     ),
 )
 

custom_components/localthings/registry/capabilities/range_hood.py

@@ -0,0 +1,288 @@
+"""Capabilities for Samsung AHD-WW-TP1-22 range hoods.
+
+The verified device exposes its fan, two-level work lamp, washable-filter
+status, and particulate sensors as distinct local OCF resources.  Fan power
+and speed are combined into one HA fan entity by ``fan.py``; lamp power and
+brightness remain separate controls because the device advertises them as two
+independent fields.
+"""
+
+from datetime import datetime, timezone
+
+from ..capability import Capability
+from ..entities import (
+    BinarySensorDesc,
+    FanDesc,
+    SelectDesc,
+    SensorDesc,
+    SwitchDesc,
+)
+from .common import int_or_none, sensor_item_value
+
+
+def _timestamp(value):
+    try:
+        return datetime.fromtimestamp(float(value), tz=timezone.utc)
+    except (TypeError, ValueError, OSError):
+        return None
+
+
+def _active_alarm_codes(items):
+    """Discard the hood firmware's retained/deleted ``ErrorCode_OFF`` row.
+
+    Unlike ``common._alarm_codes``, the hood retains a deleted alarm row in
+    its live representation, so this family-specific helper also checks state.
+    """
+    codes = []
+    for item in items or ():
+        if not isinstance(item, dict):
+            continue
+        if str(item.get('x.com.samsung.da.state', '')).lower() == 'deleted':
+            continue
+        code = item.get('x.com.samsung.da.code')
+        if code and str(code).lower() != 'errorcode_off':
+            codes.append(code)
+    return ', '.join(codes) if codes else 'none'
+
+
+HOOD_ALARMS = Capability(
+    href='/alarms/vs/0',
+    poll_tier='hot',
+    entities=(
+        SensorDesc(
+            key='alarm_code',
+            field='x.com.samsung.da.items',
+            name='Alarm code',
+            icon='mdi:alert',
+            entity_category='diagnostic',
+            value_fn=_active_alarm_codes,
+        ),
+    ),
+)
+
+
+def _hood_fan_write(payload, rep, href=None):
+    kind, value, *args = payload
+    if kind == 'power':
+        power_href = args[0] if args else '/power/0'
+        if power_href == '/power/0':
+            return ['power', '0'], {'value': bool(value)}
+        if power_href == '/power/vs/0':
+            return ['power', 'vs', '0'], {
+                'x.com.samsung.da.power': 'On' if value else 'Off',
+            }
+        return None
+    if kind == 'speed':
+        value = str(value)
+        supported = [
+            str(code)
+            for code in rep.get('x.com.samsung.da.hood.supportedFanSpeed', ())
+        ]
+        if value not in supported:
+            return None
+        return ['hood', 'fanspeed', 'vs', '0'], {
+            'x.com.samsung.da.hood.fanSpeed': value,
+        }
+    return None
+
+
+HOOD_FAN = Capability(
+    href='/hood/fanspeed/vs/0',
+    poll_tier='hot',
+    entities=(
+        FanDesc(
+            key='fan',
+            field='x.com.samsung.da.hood.fanSpeed',
+            name=None,
+            write_fn=_hood_fan_write,
+        ),
+        BinarySensorDesc(
+            key='automatic_operation',
+            field='x.com.samsung.da.hood.autoOperation',
+            name='Automatic operation',
+            icon='mdi:fan-auto',
+            entity_category='diagnostic',
+            value_fn=lambda value: str(value).lower() == 'on',
+        ),
+    ),
+)
+
+
+def _lamp_level_write(value, rep, href=None):
+    code = str(value)
+    supported = [str(level) for level in rep.get('x.com.samsung.lamp.range', ())]
+    if code not in supported:
+        return None
+    return ['hood', 'lamp', 'vs', '0'], {
+        'x.com.samsung.lamp.current': code,
+    }
+
+
+HOOD_LAMP = Capability(
+    href='/hood/lamp/vs/0',
+    poll_tier='hot',
+    entities=(
+        SwitchDesc(
+            key='lamp',
+            field='x.com.samsung.lamp.power',
+            name='Lamp',
+            icon='mdi:range-hood',
+            value_fn=lambda value: str(value).lower() == 'on',
+            write_fn=lambda payload, rep, href=None: (
+                ['hood', 'lamp', 'vs', '0'],
+                {'x.com.samsung.lamp.power': 'On' if payload == 'On' else 'Off'},
+            ),
+        ),
+        SelectDesc(
+            key='lamp_brightness',
+            field='x.com.samsung.lamp.current',
+            name='Lamp brightness',
+            icon='mdi:brightness-6',
+            translation_key='range_hood_lamp_brightness',
+            options_field='x.com.samsung.lamp.range',
+            write_fn=_lamp_level_write,
+        ),
+    ),
+)
+
+
+HOOD_FILTER = Capability(
+    href='/filter/hoodfilter/vs/0',
+    poll_tier='cold',
+    entities=(
+        SensorDesc(
+            key='hood_filter_usage',
+            field='x.com.samsung.da.filterUsage',
+            name='Filter usage',
+            unit='%',
+            state_class='measurement',
+            icon='mdi:air-filter',
+            entity_category='diagnostic',
+            value_fn=int_or_none,
+        ),
+        SensorDesc(
+            key='hood_filter_status',
+            field='x.com.samsung.da.filterStatus',
+            name='Filter status',
+            icon='mdi:air-filter',
+            entity_category='diagnostic',
+        ),
+        SensorDesc(
+            key='hood_filter_capacity',
+            field='x.com.samsung.da.filterCapacity',
+            name='Filter capacity',
+            unit='h',
+            icon='mdi:timer-outline',
+            entity_category='diagnostic',
+            enabled_default=False,
+            value_fn=int_or_none,
+        ),
+    ),
+)
+
+
+AIR_QUALITY = Capability(
+    href='/sensors/vs/0',
+    poll_tier='warm',
+    entities=(
+        SensorDesc(
+            key='clean_level',
+            field='x.com.samsung.da.items',
+            name='Clean level',
+            icon='mdi:air-filter',
+            value_fn=lambda items: sensor_item_value(items, 'CleanLevel'),
+        ),
+        SensorDesc(
+            key='dust',
+            field='x.com.samsung.da.items',
+            name='Dust',
+            value_fn=lambda items: sensor_item_value(items, 'Dust'),
+        ),
+        SensorDesc(
+            key='fine_dust',
+            field='x.com.samsung.da.items',
+            name='Fine dust',
+            value_fn=lambda items: sensor_item_value(items, 'FineDust'),
+        ),
+        SensorDesc(
+            key='super_fine_dust',
+            field='x.com.samsung.da.items',
+            name='Super fine dust',
+            value_fn=lambda items: sensor_item_value(items, 'SuperFineDust'),
+        ),
+    ),
+)
+
+
+AIR_LEVEL_CHECK = Capability(
+    href='/airlevelcheck/vs/0',
+    poll_tier='warm',
+    entities=(
+        BinarySensorDesc(
+            key='periodic_air_sensing',
+            field='x.com.samsung.da.periodicSensingActivationState',
+            name='Periodic air sensing',
+            icon='mdi:radar',
+            entity_category='diagnostic',
+            value_fn=lambda value: str(value).lower() == 'on',
+        ),
+        SensorDesc(
+            key='air_sensing_state',
+            field='x.com.samsung.da.sensingState',
+            name='Air sensing state',
+            icon='mdi:radar',
+            entity_category='diagnostic',
+        ),
+        SensorDesc(
+            key='last_air_sensing_time',
+            field='x.com.samsung.da.lastSensingTime',
+            name='Last air sensing time',
+            device_class='timestamp',
+            entity_category='diagnostic',
+            value_fn=_timestamp,
+        ),
+        SensorDesc(
+            key='last_air_sensing_level',
+            field='x.com.samsung.da.lastSensingLevel',
+            name='Last air sensing level',
+            icon='mdi:air-filter',
+            entity_category='diagnostic',
+        ),
+        SensorDesc(
+            key='automatic_ventilation_state',
+            field='x.com.samsung.da.autoExeState',
+            name='Automatic ventilation state',
+            icon='mdi:fan-auto',
+            entity_category='diagnostic',
+        ),
+    ),
+)
+
+
+AUTO_VENTILATION = Capability(
+    href='/autoventilation/vs/0',
+    poll_tier='warm',
+    entities=(
+        SensorDesc(
+            key='auto_ventilation_action',
+            field='action',
+            name='Auto ventilation action',
+            icon='mdi:fan-auto',
+        ),
+    ),
+)
+
+
+# Resource plumbing and opaque feature-negotiation fields that are specific to
+# this family.  Bare capabilities mark them covered without creating entities.
+COVERAGE = [
+    Capability(href=href)
+    for href in (
+        '/power/0',
+        '/power/vs/0',
+        '/mode/vs/0',
+        '/personality/presence/vs/0',
+        '/availablecontrolsets/vs/0',
+        '/da/softreset/vs/0',
+    )
+]

custom_components/localthings/registry/entities.py

@@ -111,6 +111,13 @@ class ClimateDesc(SamsungEntityDescription):
     write_fn: WriteFn = None
 
 
+@dataclass(frozen=True, kw_only=True)
+class FanDesc(SamsungEntityDescription):
+    # Composite fan entity: reads power from /power/0 and speed/support data
+    # from its bound href.  Payloads are (kind, value), like ClimateDesc.
+    write_fn: WriteFn = None
+
+
 PLATFORM_OF: dict[type, str] = {
     SensorDesc:       'sensor',
     BinarySensorDesc: 'binary_sensor',
@@ -120,4 +127,5 @@ PLATFORM_OF: dict[type, str] = {
     NumberDesc:       'number',
     TimeDesc:         'time',
     ClimateDesc:      'climate',
+    FanDesc:          'fan',
 }

custom_components/localthings/strings.json

@@ -16,6 +16,12 @@
           "100": "High"
         }
       },
+      "range_hood_lamp_brightness": {
+        "state": {
+          "1": "Level 1",
+          "2": "Level 2"
+        }
+      },
       "ice_type": {
         "state": {
           "off": "Off",

custom_components/localthings/translations/en.json

@@ -16,6 +16,12 @@
           "100": "High"
         }
       },
+      "range_hood_lamp_brightness": {
+        "state": {
+          "1": "Level 1",
+          "2": "Level 2"
+        }
+      },
       "ice_type": {
         "state": {
           "off": "Off",

tests/fixtures/air_purifier_device.json

@@ -0,0 +1,200 @@
+{
+  "device0": [
+    {
+      "rt": [
+        "x.com.samsung.devcol"
+      ],
+      "if": [
+        "oic.if.baseline",
+        "oic.if.ll",
+        "oic.if.b"
+      ]
+    },
+    {
+      "href": "/airflow/0",
+      "rep": {
+        "speed": 0,
+        "direction": "Off"
+      }
+    },
+    {
+      "href": "/airflow/vs/0",
+      "rep": {
+        "x.com.samsung.da.speedLevel": "0",
+        "x.com.samsung.da.direction": "Off"
+      }
+    },
+    {
+      "href": "/alarms/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Alarm",
+            "x.com.samsung.da.alarmType": "Device",
+            "x.com.samsung.da.code": "ErrorCode_OFF",
+            "x.com.samsung.da.triggeredTime": "2026-07-23T15:56:55",
+            "x.com.samsung.da.state": "Deleted"
+          },
+          {
+            "x.com.samsung.da.id": "1",
+            "x.com.samsung.da.description": "Alarm",
+            "x.com.samsung.da.alarmType": "Device",
+            "x.com.samsung.da.code": "FilterAlarm",
+            "x.com.samsung.da.triggeredTime": "2026-07-23T15:56:55",
+            "x.com.samsung.da.state": "Created"
+          }
+        ]
+      }
+    },
+    {
+      "href": "/configuration/vs/0",
+      "rep": {}
+    },
+    {
+      "href": "/consumable/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.state": "100",
+            "x.com.samsung.da.name": "FilterProgress"
+          }
+        ]
+      }
+    },
+    {
+      "href": "/devicespecificinfo/vs/0",
+      "rep": {
+        "x.com.samsung.da.deviceActive": true
+      }
+    },
+    {
+      "href": "/diagnosis/vs/0",
+      "rep": {
+        "x.com.samsung.da.diagnosisStart": "Ready"
+      }
+    },
+    {
+      "href": "/energy/consumption/0",
+      "rep": {}
+    },
+    {
+      "href": "/energy/consumption/vs/0",
+      "rep": {}
+    },
+    {
+      "href": "/humidity/0",
+      "rep": {}
+    },
+    {
+      "href": "/humidity/vs/0",
+      "rep": {}
+    },
+    {
+      "href": "/information/vs/0",
+      "rep": {
+        "x.com.samsung.da.modelNum": "ARTIK051_TVTL_18K|10193941|7000023C001111C40100000000000000",
+        "x.com.samsung.da.description": "ARTIK051_TVTL_18K",
+        "x.com.samsung.da.serialNum": "**REDACTED**",
+        "x.com.samsung.da.otnDUID": "**REDACTED**",
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Version",
+            "x.com.samsung.da.type": "Software",
+            "x.com.samsung.da.number": "02059A230513",
+            "x.com.samsung.da.newVersionAvailable": "0"
+          },
+          {
+            "x.com.samsung.da.id": "1",
+            "x.com.samsung.da.description": "Version",
+            "x.com.samsung.da.type": "Firmware",
+            "x.com.samsung.da.number": "19071703,19071706",
+            "x.com.samsung.da.newVersionAvailable": "0"
+          }
+        ]
+      }
+    },
+    {
+      "href": "/mode/vs/0",
+      "rep": {
+        "x.com.samsung.da.options": [
+          "Comode_Off",
+          "Blooming_0",
+          "Light_On",
+          "OptionCode_60282"
+        ]
+      }
+    },
+    {
+      "href": "/power/0",
+      "rep": {
+        "value": false
+      }
+    },
+    {
+      "href": "/power/vs/0",
+      "rep": {
+        "x.com.samsung.da.power": "Off"
+      }
+    },
+    {
+      "href": "/realtimenotiforclient/vs/0",
+      "rep": {
+        "x.com.samsung.da.timeforshortnoti": "0",
+        "x.com.samsung.da.longnotisubscription": "true",
+        "x.com.samsung.da.periodicnotisubscription": "false"
+      }
+    },
+    {
+      "href": "/sensors/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Sensor for Dust",
+            "x.com.samsung.da.type": "Dust",
+            "x.com.samsung.da.value": [
+              "11",
+              "0"
+            ]
+          },
+          {
+            "x.com.samsung.da.id": "1",
+            "x.com.samsung.da.description": "Sensor for FineDust",
+            "x.com.samsung.da.type": "FineDust",
+            "x.com.samsung.da.value": [
+              "9",
+              "0"
+            ]
+          },
+          {
+            "x.com.samsung.da.id": "2",
+            "x.com.samsung.da.description": "Sensor for Odor",
+            "x.com.samsung.da.type": "Odor",
+            "x.com.samsung.da.value": [
+              "0"
+            ]
+          },
+          {
+            "x.com.samsung.da.id": "3",
+            "x.com.samsung.da.description": "Sensor for CleanLevel",
+            "x.com.samsung.da.type": "CleanLevel",
+            "x.com.samsung.da.value": [
+              "0"
+            ]
+          },
+          {
+            "x.com.samsung.da.id": "4",
+            "x.com.samsung.da.description": "Sensor for SuperFineDust",
+            "x.com.samsung.da.type": "SuperFineDust",
+            "x.com.samsung.da.value": [
+              "5",
+              "0"
+            ]
+          }
+        ]
+      }
+    }
+  ]
+}

tests/fixtures/cooktop_device.json

@@ -0,0 +1,73 @@
+{
+  "device0": [
+    {
+      "rt": [
+        "x.com.samsung.devcol",
+        "oic.wk.col"
+      ],
+      "if": [
+        "oic.if.baseline",
+        "oic.if.ll",
+        "oic.if.b"
+      ]
+    },
+    {
+      "href": "/otninformation/vs/0",
+      "rep": {
+        "x.com.samsung.da.target": "",
+        "x.com.samsung.da.newVersionAvailable": "false"
+      }
+    },
+    {
+      "href": "/power/vs/0",
+      "rep": {
+        "x.com.samsung.da.power": "On"
+      }
+    },
+    {
+      "href": "/mode/vs/0",
+      "rep": {
+        "rt": [
+          "x.com.samsung.da.mode"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.a"
+        ],
+        "x.com.samsung.da.options": [
+          "DeviceType_NA9300K-/AA1",
+          "MainTimerCurrent_0",
+          "MainTimerSet_0",
+          "MainTimerState_Ready",
+          "OperationState0_Ready",
+          "OperationState1_Ready",
+          "OperationState3_Ready",
+          "OperationState4_Ready",
+          "OperationState5_Ready"
+        ]
+      }
+    },
+    {
+      "href": "/connected/vs/0",
+      "rep": {
+        "x.com.samsung.da.connected": "On"
+      }
+    },
+    {
+      "href": "/configuration/vs/0",
+      "rep": {}
+    },
+    {
+      "href": "/bluetooth/hood/status/vs/0",
+      "rep": {
+        "connectionState": "disconnected",
+        "micomModelId": "",
+        "firmwareVersion": "",
+        "power": "off",
+        "fanSpeed": 0,
+        "lampState": "off",
+        "timer": {}
+      }
+    }
+  ]
+}

tests/fixtures/golden/air_purifier.json

@@ -0,0 +1,24 @@
+{
+  "state_keys": [
+    "alarm_code",
+    "clean_level",
+    "device_active",
+    "diagnosis_status",
+    "display_light",
+    "dust",
+    "energy_kwh",
+    "energy_last_month_kwh",
+    "energy_saved_kwh",
+    "energy_this_month_kwh",
+    "fan_direction",
+    "fan_speed_level",
+    "filter_life",
+    "fine_dust",
+    "odor",
+    "operating_mode",
+    "power_energy_kwh",
+    "power_switch",
+    "power_watts",
+    "super_fine_dust"
+  ]
+}

tests/fixtures/golden/cooktop.json

@@ -0,0 +1,21 @@
+{
+  "state_keys": [
+    "any_burner_active",
+    "burner_0_state",
+    "burner_1_state",
+    "burner_3_state",
+    "burner_4_state",
+    "burner_5_state",
+    "cloud_connected",
+    "firmware_update",
+    "main_timer_current",
+    "main_timer_state",
+    "paired_hood_connected",
+    "paired_hood_fan_speed",
+    "paired_hood_firmware",
+    "paired_hood_light",
+    "paired_hood_model",
+    "paired_hood_power",
+    "power_state"
+  ]
+}

tests/fixtures/golden/oven.json

@@ -0,0 +1,25 @@
+{
+  "state_keys": [
+    "alarm_code",
+    "child_lock",
+    "cloud_connected",
+    "cook_time",
+    "current_temp_c",
+    "cycle_active",
+    "door_open",
+    "fast_preheat",
+    "finish_time",
+    "firmware_update",
+    "lamp",
+    "machine_state",
+    "natural_steam",
+    "operation_time_minutes",
+    "oven_mode",
+    "oven_setpoint",
+    "oven_state",
+    "power_switch",
+    "progress_percentage",
+    "remote_control",
+    "sound"
+  ]
+}

tests/fixtures/golden/range_hood.json

@@ -0,0 +1,25 @@
+{
+  "state_keys": [
+    "air_sensing_state",
+    "alarm_code",
+    "auto_ventilation_action",
+    "automatic_operation",
+    "automatic_ventilation_state",
+    "clean_level",
+    "energy_kwh",
+    "energy_saved_kwh",
+    "fan",
+    "firmware_update",
+    "hood_filter_capacity",
+    "hood_filter_status",
+    "hood_filter_usage",
+    "lamp",
+    "lamp_brightness",
+    "last_air_sensing_level",
+    "last_air_sensing_time",
+    "periodic_air_sensing",
+    "dust",
+    "fine_dust",
+    "super_fine_dust"
+  ]
+}

tests/fixtures/oven_device.json

@@ -0,0 +1,289 @@
+{
+  "meta": {
+    "model": "TP1X_DA-KS-OVEN-0107X (NV7000BS/ET5)",
+    "device_type": "oven",
+    "source": "issue #55 diagnostics (scrubbed)",
+    "note": "Wall oven reports no oneUiVersion; resolved via the '-OVEN-' modelNum token fallback in for_device_by_model, mirroring the '-RANGE-' fallback added for issue #44."
+  },
+  "device0": [
+    {
+      "rt": [
+        "x.com.samsung.devcol",
+        "oic.wk.col"
+      ],
+      "if": [
+        "oic.if.baseline",
+        "oic.if.ll",
+        "oic.if.b"
+      ]
+    },
+    {
+      "href": "/otninformation/vs/0",
+      "rep": {
+        "x.com.samsung.da.target": "",
+        "x.com.samsung.da.newVersionAvailable": "false",
+        "flashingProgress": "",
+        "otnStatus": "None",
+        "otnList": [
+          {
+            "type": "WIFI",
+            "modelId": "AKS-WW-TP1-22-OVEN-1",
+            "versions": [
+              "40250221"
+            ],
+            "visVersion": "250221"
+          },
+          {
+            "type": "Micom",
+            "modelId": "07134046004140472641",
+            "versions": [
+              "23011700",
+              "23122000"
+            ],
+            "visVersion": "231220"
+          },
+          {
+            "type": "Micom",
+            "modelId": "071360127441FFFFFFFF",
+            "versions": [
+              "21123000",
+              "FFFFFFFF"
+            ],
+            "visVersion": "211230"
+          }
+        ]
+      }
+    },
+    {
+      "href": "/connected/vs/0",
+      "rep": {
+        "x.com.samsung.da.connected": "On"
+      }
+    },
+    {
+      "href": "/doors/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Door",
+            "x.com.samsung.da.openState": "Close"
+          }
+        ],
+        "rt": [
+          "x.com.samsung.da.doors"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.s"
+        ]
+      }
+    },
+    {
+      "href": "/information/vs/0",
+      "rep": {
+        "x.com.samsung.da.modelNum": "TP1X_DA-KS-OVEN-0107X|40460041|50030018001611020A00000000000000",
+        "x.com.samsung.da.description": "NV7000BS/ET5",
+        "x.com.samsung.da.serialNum": "**REDACTED**",
+        "x.com.samsung.da.otnDUID": "**REDACTED**",
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Version",
+            "x.com.samsung.da.type": "Software",
+            "x.com.samsung.da.number": "25022100",
+            "x.com.samsung.da.newVersionAvailable": "0"
+          },
+          {
+            "x.com.samsung.da.id": "1",
+            "x.com.samsung.da.description": "Version",
+            "x.com.samsung.da.type": "Firmware",
+            "x.com.samsung.da.number": "04600A23011700, 04726A23122000",
+            "x.com.samsung.da.newVersionAvailable": "0"
+          },
+          {
+            "x.com.samsung.da.id": "2",
+            "x.com.samsung.da.description": "Version",
+            "x.com.samsung.da.type": "Firmware",
+            "x.com.samsung.da.number": "01274A21123000",
+            "x.com.samsung.da.newVersionAvailable": "0"
+          }
+        ],
+        "x.com.samsung.da.diagProtocolType": "BLE_OCF",
+        "x.com.samsung.da.diagLogType": [
+          "errCode",
+          "dump"
+        ],
+        "x.com.samsung.da.diagDumpType": "file",
+        "x.com.samsung.da.diagEndPoint": "SSM",
+        "x.com.samsung.da.diagMnid": "0AJT",
+        "x.com.samsung.da.diagSetupid": "KV1",
+        "x.com.samsung.da.diagMinVersion": "3.0",
+        "x.com.samsung.da.diagTsId": "DA01"
+      }
+    },
+    {
+      "href": "/mode/vs/0",
+      "rep": {
+        "x.com.samsung.da.supportedModes": [
+          "Autocook",
+          "Convection",
+          "TopHeatPluseConvection",
+          "Conventional",
+          "LargeGrill",
+          "SmallGrill",
+          "BottomHeatPluseConvection",
+          "PlateWarm",
+          "KeepWarm",
+          "Bottom",
+          "EcoConvection",
+          "FanGrill",
+          "Defrost",
+          "SteamClean"
+        ],
+        "x.com.samsung.da.modes": [
+          "NoOperation"
+        ],
+        "x.com.samsung.da.options": [
+          "DeviceType_NV7000BS/ET5",
+          "UpperTimerCurrent_0",
+          "UpperTimerSet_0",
+          "UpperTimerState_Ready",
+          "UpperLamp_Off",
+          "Sound_On"
+        ],
+        "x.com.samsung.da.defaultMode": "Convection",
+        "rt": [
+          "x.com.samsung.da.mode"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.a"
+        ]
+      }
+    },
+    {
+      "href": "/operational/state/vs/0",
+      "rep": {
+        "x.com.samsung.da.state": "Ready",
+        "x.com.samsung.da.operationTime": "00:00:00",
+        "x.com.samsung.da.remainingTime": "00:00:00",
+        "x.com.samsung.da.progressPercentage": "0",
+        "rt": [
+          "x.com.samsung.da.operation"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.a"
+        ]
+      }
+    },
+    {
+      "href": "/alarms/vs/0",
+      "rep": {
+        "rt": [
+          "x.com.samsung.da.alarms"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.s"
+        ],
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Alarm",
+            "x.com.samsung.da.alarmType": "Device",
+            "x.com.samsung.da.code": "OV_E_OFF",
+            "x.com.samsung.da.triggeredTime": "2026-07-23T15:26:07"
+          }
+        ]
+      }
+    },
+    {
+      "href": "/oven/vs/0",
+      "rep": {
+        "x.com.samsung.da.state": "Ready",
+        "x.com.samsung.da.recipe": "00000000000000",
+        "rt": [
+          "x.com.samsung.da.oven"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.s"
+        ]
+      }
+    },
+    {
+      "href": "/temperatures/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Temperature",
+            "x.com.samsung.da.desired": "0",
+            "x.com.samsung.da.current": "0",
+            "x.com.samsung.da.increment": "5",
+            "x.com.samsung.da.unit": "Celsius"
+          }
+        ],
+        "rt": [
+          "x.com.samsung.da.temperatures"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.a"
+        ]
+      }
+    },
+    {
+      "href": "/timezone/vs/0",
+      "rep": {
+        "timezoneid": "Europe/Rome",
+        "offset": "+02:00",
+        "DST": "ON"
+      }
+    },
+    {
+      "href": "/configuration/vs/0",
+      "rep": {}
+    },
+    {
+      "href": "/kidslock/vs/0",
+      "rep": {
+        "x.com.samsung.da.kidsLock": "Ready"
+      }
+    },
+    {
+      "href": "/power/vs/0",
+      "rep": {
+        "x.com.samsung.da.power": "On"
+      }
+    },
+    {
+      "href": "/remotectrl/vs/0",
+      "rep": {
+        "x.com.samsung.da.remoteControlEnabled": "true",
+        "rt": [
+          "x.com.samsung.da.configuration"
+        ],
+        "if": [
+          "oic.if.baseline",
+          "oic.if.s"
+        ]
+      }
+    },
+    {
+      "href": "/wirelessinfo/vs/0",
+      "rep": {
+        "macaddressWiFi": "**REDACTED**",
+        "macaddressBLE": "**REDACTED**"
+      }
+    },
+    {
+      "href": "/quickcontrol/info/vs/0",
+      "rep": {
+        "supportedVersion": "1.0"
+      }
+    }
+  ]
+}

tests/fixtures/range_hood_device.json

@@ -0,0 +1,199 @@
+{
+  "device0": [
+    {
+      "rt": ["x.com.samsung.devcol", "oic.wk.col"],
+      "if": ["oic.if.baseline", "oic.if.ll", "oic.if.b"]
+    },
+    {
+      "href": "/personality/presence/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "",
+            "x.com.samsung.da.deviceId": "TEST-DEVICE-ID",
+            "x.com.samsung.da.value": ""
+          }
+        ]
+      }
+    },
+    {
+      "href": "/realtimenotiforclient/vs/0",
+      "rep": {
+        "x.com.samsung.da.timeforshortnoti": "0",
+        "x.com.samsung.da.longnotisubscription": "false",
+        "x.com.samsung.da.periodicnotisubscription": "true"
+      }
+    },
+    {
+      "href": "/airlevelcheck/vs/0",
+      "rep": {
+        "x.com.samsung.da.periodicSensingActivationState": "Off",
+        "x.com.samsung.da.periodicSensingInterval": "3600",
+        "x.com.samsung.da.startSensingOnce": "Off",
+        "x.com.samsung.da.sensingState": "NonProcessing",
+        "x.com.samsung.da.lastSensingTime": "1784651378",
+        "x.com.samsung.da.lastSensingLevel": "Kr2",
+        "x.com.samsung.da.autoExeState": "Sensing",
+        "x.com.samsung.da.supportedAutoExeState": ["Airpurify", "Alarm"],
+        "x.com.samsung.da.periodicSensingSkipStatus": "Off",
+        "x.com.samsung.da.periodicSensingSkipTime": "00000000"
+      }
+    },
+    {
+      "href": "/alarms/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Alarm",
+            "x.com.samsung.da.alarmType": "Device",
+            "x.com.samsung.da.code": "ErrorCode_OFF",
+            "x.com.samsung.da.triggeredTime": "2026-07-21T20:18:51",
+            "x.com.samsung.da.state": "Deleted"
+          }
+        ]
+      }
+    },
+    {
+      "href": "/energy/consumption/vs/0",
+      "rep": {
+        "x.com.samsung.da.cumulativePower": "165620",
+        "x.com.samsung.da.cumulativeSavedPower": "0",
+        "x.com.samsung.da.cumulativeDate": "1784647130",
+        "x.com.samsung.da.cumulativeDateUTC": "1784665130",
+        "x.com.samsung.da.cumulativeUnit": "Wh"
+      }
+    },
+    {"href": "/energy/consumption/0", "rep": {}},
+    {
+      "href": "/mode/vs/0",
+      "rep": {
+        "x.com.samsung.da.options": ["OptionCode_19322", "UpdateAllow_NotAllowed"]
+      }
+    },
+    {
+      "href": "/power/vs/0",
+      "rep": {"x.com.samsung.da.power": "Off"}
+    },
+    {"href": "/power/0", "rep": {"value": false}},
+    {
+      "href": "/sensors/vs/0",
+      "rep": {
+        "x.com.samsung.da.items": [
+          {
+            "x.com.samsung.da.id": "0",
+            "x.com.samsung.da.description": "Sensor for CleanLevel",
+            "x.com.samsung.da.type": "CleanLevel",
+            "x.com.samsung.da.value": ["2"]
+          },
+          {
+            "x.com.samsung.da.id": "2",
+            "x.com.samsung.da.description": "Sensor for Dust",
+            "x.com.samsung.da.type": "Dust",
+            "x.com.samsung.da.value": ["18", "1"]
+          },
+          {
+            "x.com.samsung.da.id": "3",
+            "x.com.samsung.da.description": "Sensor for FineDust",
+            "x.com.samsung.da.type": "FineDust",
+            "x.com.samsung.da.value": ["14", "1"]
+          },
+          {
+            "x.com.samsung.da.id": "4",
+            "x.com.samsung.da.description": "Sensor for SuperFineDust",
+            "x.com.samsung.da.type": "SuperFineDust",
+            "x.com.samsung.da.value": ["9", "1"]
+          }
+        ]
+      }
+    },
+    {
+      "href": "/information/vs/0",
+      "rep": {
+        "x.com.samsung.da.modelNum": "AHD-WW-TP1-22-COMMON|20136141|7800006B001713C44D00090001030000",
+        "x.com.samsung.da.description": "AHD-WW-TP1-22-COMMON",
+        "x.com.samsung.da.serialNum": "TEST-HOOD-SERIAL",
+        "x.com.samsung.da.diagProtocolType": "WIFI_HTTPS",
+        "x.com.samsung.da.diagSetupid": "KH0"
+      }
+    },
+    {
+      "href": "/file/information/vs/0",
+      "rep": {"x.com.samsung.timeoffset": "-05:00"}
+    },
+    {
+      "href": "/configuration/vs/0",
+      "rep": {
+        "x.com.samsung.da.region": "0000000000",
+        "x.com.samsung.da.airconOptionList": ["DR"],
+        "x.com.samsung.da.countryCode": ""
+      }
+    },
+    {
+      "href": "/drlc/0",
+      "rep": {
+        "DRLevel": 0,
+        "start": "1970-01-01T00:00:00Z",
+        "durationminutes": 0,
+        "override": false
+      }
+    },
+    {
+      "href": "/drlc/vs/0",
+      "rep": {
+        "x.com.samsung.da.drlcLevel": "0",
+        "x.com.samsung.da.durationminutes": "0",
+        "x.com.samsung.da.start": "1970-01-01T00:00:00Z",
+        "x.com.samsung.da.override": "Off",
+        "x.com.samsung.da.realSaving": "Off"
+      }
+    },
+    {
+      "href": "/availablecontrolsets/vs/0",
+      "rep": {
+        "x.com.samsung.da.sets": "0000000000012000000000000000",
+        "x.com.samsung.da.id": "HOOD",
+        "x.com.samsung.da.version": "1.0"
+      }
+    },
+    {
+      "href": "/da/softreset/vs/0",
+      "rep": {"x.com.samsung.da.softwarereset": "false"}
+    },
+    {
+      "href": "/filter/hoodfilter/vs/0",
+      "rep": {
+        "x.com.samsung.da.filterUsage": "100",
+        "x.com.samsung.da.filterUsageResolution": "1",
+        "x.com.samsung.da.filterStatus": "wash",
+        "x.com.samsung.da.filterCapacity": "60",
+        "x.com.samsung.da.filterCapacityUnit": "Hour",
+        "x.com.samsung.da.filterResetType": ["replaceable", "washable"]
+      }
+    },
+    {
+      "href": "/hood/fanspeed/vs/0",
+      "rep": {
+        "x.com.samsung.da.hood.autoOperation": "Off",
+        "x.com.samsung.da.hood.fanSpeed": "14",
+        "x.com.samsung.da.hood.supportedFanSpeed": ["14", "15", "16", "17"]
+      }
+    },
+    {
+      "href": "/hood/lamp/vs/0",
+      "rep": {
+        "x.com.samsung.lamp.power": "Off",
+        "x.com.samsung.lamp.current": "2",
+        "x.com.samsung.lamp.range": ["1", "2"]
+      }
+    },
+    {"href": "/autoventilation/vs/0", "rep": {"action": "Start"}},
+    {
+      "href": "/otninformation/vs/0",
+      "rep": {
+        "x.com.samsung.da.target": "",
+        "x.com.samsung.da.newVersionAvailable": "false"
+      }
+    }
+  ]
+}

tests/localthings/test_coordinator.py

@@ -136,6 +136,31 @@ def test_run_discovery_detects_washer_via_model_fallback(
     assert coordinator.device_type_name == 'washer'
 
 
+def test_run_discovery_detects_cooktop_via_resource_signature(
+    hass: HomeAssistant, mock_entry
+) -> None:
+    """NA9300K omits oneUiVersion and information but has burner options."""
+    from tests.conftest import _load_device
+
+    coordinator = LocalThingsCoordinator(hass, mock_entry)
+    coordinator._run_discovery(_load_device('cooktop'))
+
+    assert coordinator.device_type_name == 'cooktop'
+    assert coordinator._unbound_hrefs == []
+
+
+def test_run_discovery_detects_range_hood_via_model(
+    hass: HomeAssistant, mock_entry
+) -> None:
+    from tests.conftest import _load_device
+
+    coordinator = LocalThingsCoordinator(hass, mock_entry)
+    coordinator._run_discovery(_load_device('range_hood'))
+
+    assert coordinator.device_type_name == 'range_hood'
+    assert coordinator._unbound_hrefs == []
+
+
 def test_update_coverage_gap_issue_creates_issue_for_unknown_type(
     hass: HomeAssistant, mock_entry
 ) -> None:

tests/test_air_purifier_capabilities.py

@@ -0,0 +1,117 @@
+"""Tests for the ARTIK051_TVTL_18K air-purifier profile (issue #56)."""
+from custom_components.localthings.registry.adapter import flatten
+from custom_components.localthings.registry.by_type import for_device_by_model
+from custom_components.localthings.registry.capabilities import air_purifier
+from custom_components.localthings.registry.discovery import discover
+from tests.conftest import _load_device
+
+
+def _purifier():
+    resources = _load_device('air_purifier')
+    info = resources['/information/vs/0']
+    reg = for_device_by_model(
+        info['x.com.samsung.da.modelNum'], info['x.com.samsung.da.description'],
+    )
+    return reg, resources
+
+
+def _state():
+    reg, resources = _purifier()
+    bound = discover(resources, reg.capabilities, reg.pattern_capabilities)
+    return flatten(bound, resources)
+
+
+def test_model_resolves_to_air_purifier_registry():
+    reg, _ = _purifier()
+    assert reg is not None
+    assert reg.name == 'air_purifier'
+
+
+def test_no_unbound_hrefs():
+    """Every resource in the issue #56 dump binds or is ignored -- clears the
+    coverage-gap repair."""
+    reg, resources = _purifier()
+    unbound = []
+    discover(resources, reg.capabilities, reg.pattern_capabilities, log=unbound.append)
+    assert unbound == []
+
+
+def test_expected_entities_present():
+    state = _state()
+    for key in (
+        'power_switch', 'alarm_code', 'dust', 'fine_dust', 'super_fine_dust',
+        'odor', 'clean_level', 'filter_life', 'device_active',
+        'diagnosis_status', 'fan_speed_level', 'fan_direction',
+        'display_light', 'operating_mode',
+    ):
+        assert key in state, key
+
+
+def test_air_quality_sensor_values():
+    """Dust/FineDust/SuperFineDust/Odor/CleanLevel read index 0 of each
+    items[] entry's value list (the raw measurement, per common.sensor_item_value)."""
+    state = _state()
+    assert state['dust'] == 11
+    assert state['fine_dust'] == 9
+    assert state['super_fine_dust'] == 5
+    assert state['odor'] == 0
+    assert state['clean_level'] == 0
+
+
+def test_filter_life_reads_named_consumable_item():
+    """FilterProgress is confirmed (issue #56) to count down as the filter
+    wears -- 100 means fresh, not "100% used"."""
+    assert _state()['filter_life'] == 100
+
+
+def test_diagnosis_reuses_dishwasher_capability():
+    """/diagnosis/vs/0 has the identical field/write contract as
+    dishwasher.DIAGNOSIS, so the by_type registry reuses it directly."""
+    from custom_components.localthings.registry.capabilities import dishwasher
+    reg, _ = _purifier()
+    assert dishwasher.DIAGNOSIS in reg.capabilities['/diagnosis/vs/0']
+
+
+def test_light_switch_write_contract():
+    """The display-light switch RMW-replaces only the 'Light_*' entry in the
+    packed /mode/vs/0 options list (via laundry.replace_in_options), leaving
+    the other flags and the list order untouched."""
+    desc = next(e for e in air_purifier.MODE.entities if e.key == 'display_light')
+    rep = {'x.com.samsung.da.options': [
+        'Comode_Off', 'Light_On', 'OptionCode_60282',
+    ]}
+    assert desc.rep_fn(rep) is True
+    assert desc.write_fn('Off', rep) == (
+        ['mode', 'vs', '0'],
+        {'x.com.samsung.da.options': [
+            'Comode_Off', 'Light_Off', 'OptionCode_60282',
+        ]},
+    )
+
+
+def test_operating_mode_is_a_read_only_diagnostic():
+    """Comode_* surfaces as a raw diagnostic sensor rather than a select/
+    control -- issue #56's five running-state dumps confirmed it reads 'Off'
+    regardless of the device's actual fan setting, ruling out the original
+    guess that it was the fan-speed selector; its real purpose is still
+    unconfirmed (see the air_purifier.py module docstring)."""
+    operating_mode = next(e for e in air_purifier.MODE.entities if e.key == 'operating_mode')
+    rep = {'x.com.samsung.da.options': ['Comode_Off']}
+    assert operating_mode.rep_fn(rep) == 'Off'
+    assert not hasattr(operating_mode, 'write_fn')
+
+
+def test_blooming_not_modeled():
+    """Confirmed (issue #56) to have no corresponding SmartThings app
+    setting -- dropped entirely rather than kept as an unexplained
+    diagnostic."""
+    assert not any(e.key == 'blooming_level' for e in air_purifier.MODE.entities)
+
+
+def test_airflow_vs_fallback_only_binds_without_generic():
+    """/airflow/vs/0 is a match_fn fallback -- it must not bind when the
+    OCF-standard /airflow/0 is also present (both are on every dump seen)."""
+    assert air_purifier.AIRFLOW_VS_FALLBACK.match_fn(
+        {}, {'/airflow/0': {'speed': 0, 'direction': 'Off'}},
+    ) is False
+    assert air_purifier.AIRFLOW_VS_FALLBACK.match_fn({}, {}) is True

tests/test_by_type.py

@@ -41,6 +41,16 @@ class TestForDevice:
         assert isinstance(registry, DeviceRegistry)
         assert registry.name == 'refrigerator'
 
+    def test_for_device_returns_cooktop_registry(self):
+        registry = for_device('7.0 Cooktop')
+        assert registry is not None
+        assert registry.name == 'cooktop'
+
+    def test_for_device_returns_range_hood_registry(self):
+        registry = for_device('7.0 Range Hood')
+        assert registry is not None
+        assert registry.name == 'range_hood'
+
 
 class TestDeviceRegistries:
     """Tests for device registries themselves."""
@@ -180,6 +190,25 @@ class TestForDeviceByModel:
         assert reg is not None
         assert reg.name == 'airconditioner'
 
+    def test_cooktop_via_legacy_model_description(self):
+        """Older cooktops identify themselves as ARTIK051_GLOBAL_COOKTOP."""
+        from custom_components.localthings.registry.by_type import for_device_by_model
+        reg = for_device_by_model(
+            'ARTIK051_GB_CT_001|40424141|50000204001211000200000000000000',
+            'ARTIK051_GLOBAL_COOKTOP',
+        )
+        assert reg is not None
+        assert reg.name == 'cooktop'
+
+    def test_range_hood_via_ahd_model(self):
+        from custom_components.localthings.registry.by_type import for_device_by_model
+        reg = for_device_by_model(
+            'AHD-WW-TP1-22-COMMON|20136141|7800006B001713C44D00090001030000',
+            'AHD-WW-TP1-22-COMMON',
+        )
+        assert reg is not None
+        assert reg.name == 'range_hood'
+
     def test_washer_wf_prefix(self):
         """US front-load washers use the WF consumer-model prefix."""
         from custom_components.localthings.registry.by_type import for_device_by_model
@@ -200,6 +229,18 @@ class TestForDeviceByModel:
         assert reg is not None
         assert reg.name == 'washer'
 
+    def test_oven_via_oven_token(self):
+        """Issue #55: a wall oven (NV7000BS/ET5) reports no oneUiVersion and
+        an unrecognized consumer token ('NV'); it falls back to the '-OVEN-'
+        token in modelNum, mirroring the '-RANGE-' fallback for issue #44."""
+        from custom_components.localthings.registry.by_type import for_device_by_model
+        reg = for_device_by_model(
+            'TP1X_DA-KS-OVEN-0107X|40460041|50030018001611020A00000000000000',
+            'NV7000BS/ET5',
+        )
+        assert reg is not None
+        assert reg.name == 'oven'
+
     def test_unknown_model_returns_none(self):
         from custom_components.localthings.registry.by_type import for_device_by_model
         reg = for_device_by_model('SOME-UNKNOWN-BOARD', 'SOME-UNKNOWN-BOARD')
@@ -208,3 +249,38 @@ class TestForDeviceByModel:
     def test_empty_inputs_return_none(self):
         from custom_components.localthings.registry.by_type import for_device_by_model
         assert for_device_by_model('', '') is None
+
+
+class TestForDeviceByResources:
+    def test_na9300k_without_one_ui_or_information_is_cooktop(self):
+        from custom_components.localthings.registry.by_type import for_device_by_resources
+        from tests.conftest import _load_device
+
+        reg = for_device_by_resources(_load_device('cooktop'))
+
+        assert reg is not None
+        assert reg.name == 'cooktop'
+
+    def test_unrelated_mode_options_are_not_cooktop(self):
+        from custom_components.localthings.registry.by_type import for_device_by_resources
+
+        resources = {
+            '/mode/vs/0': {
+                'x.com.samsung.da.options': [
+                    'DeviceType_SOME_OVEN',
+                    'UpperLamp_Off',
+                ],
+            },
+        }
+
+        assert for_device_by_resources(resources) is None
+
+    def test_hood_resource_signature(self):
+        from custom_components.localthings.registry.by_type import for_device_by_resources
+        resources = {
+            '/hood/fanspeed/vs/0': {},
+            '/hood/lamp/vs/0': {},
+        }
+        reg = for_device_by_resources(resources)
+        assert reg is not None
+        assert reg.name == 'range_hood'

tests/test_cooktop_capabilities.py

@@ -0,0 +1,77 @@
+"""Tests for the read-only cooktop capability profile."""
+
+from custom_components.localthings.registry.adapter import flatten
+from custom_components.localthings.registry.by_type import cooktop
+from custom_components.localthings.registry.capabilities.cooktop import (
+    COOKTOP_MODE,
+)
+from custom_components.localthings.registry.discovery import discover
+from tests.conftest import _load_device
+
+
+def _state(resources):
+    bound = discover(
+        resources,
+        cooktop.REGISTRY.capabilities,
+        cooktop.REGISTRY.pattern_capabilities,
+    )
+    return flatten(bound, resources)
+
+
+def test_real_cooktop_fixture_has_expected_idle_state():
+    state = _state(_load_device('cooktop'))
+
+    assert state['power_state'] is True
+    assert state['any_burner_active'] is False
+    assert state['burner_0_state'] == 'Ready'
+    assert state['burner_5_state'] == 'Ready'
+    assert state['main_timer_state'] == 'Ready'
+    assert state['main_timer_current'] == 0
+    assert state['cloud_connected'] is True
+    assert state['paired_hood_connected'] is False
+    assert state['paired_hood_power'] is False
+    assert state['paired_hood_fan_speed'] == 0
+    assert state['paired_hood_light'] is False
+
+
+def test_run_operation_marks_any_burner_active():
+    resources = _load_device('cooktop')
+    options = resources['/mode/vs/0']['x.com.samsung.da.options']
+    options[options.index('OperationState3_Ready')] = 'OperationState3_Run'
+
+    state = _state(resources)
+
+    assert state['burner_3_state'] == 'Run'
+    assert state['any_burner_active'] is True
+
+
+def test_cooktop_profile_has_no_write_functions():
+    """A local integration must never expose unverified remote ignition."""
+    descriptions = [
+        desc
+        for capabilities in cooktop.REGISTRY.capabilities.values()
+        for capability in capabilities
+        for desc in capability.entities
+    ]
+
+    assert descriptions
+    assert all(not hasattr(desc, 'write_fn') or desc.write_fn is None
+               for desc in descriptions)
+
+
+def test_static_slot_superset_has_headroom_for_other_layouts():
+    keys = {desc.key for desc in COOKTOP_MODE.entities}
+
+    assert {f'burner_{slot}_state' for slot in range(8)} <= keys
+
+
+def test_variant_slot_outside_na9300k_layout_is_discovered():
+    resources = _load_device('cooktop')
+    resources['/mode/vs/0']['x.com.samsung.da.options'].append(
+        'OperationState7_Ready',
+    )
+
+    state = _state(resources)
+
+    assert state['burner_7_state'] == 'Ready'
+    assert 'burner_2_state' not in state

tests/test_entities.py

@@ -1,6 +1,6 @@
 from custom_components.localthings.registry.entities import (
     SensorDesc, BinarySensorDesc, SelectDesc, SwitchDesc, ButtonDesc,
-    NumberDesc, TimeDesc, ClimateDesc, PLATFORM_OF,
+    NumberDesc, TimeDesc, ClimateDesc, FanDesc, PLATFORM_OF,
 )
 
 
@@ -28,6 +28,7 @@ def test_platform_mapping_covers_all_subclasses():
     assert PLATFORM_OF[NumberDesc] == 'number'
     assert PLATFORM_OF[TimeDesc] == 'time'
     assert PLATFORM_OF[ClimateDesc] == 'climate'
+    assert PLATFORM_OF[FanDesc] == 'fan'
 
 
 def test_select_carries_options_and_write_fn():

tests/test_golden_regression.py

@@ -7,7 +7,9 @@ GOLDEN = Path(__file__).parent / 'fixtures' / 'golden'
 
 
 def _new_state_keys(name, resources):
-    from custom_components.localthings.registry.by_type import for_device, for_device_by_model
+    from custom_components.localthings.registry.by_type import (
+        for_device, for_device_by_model, for_device_by_resources,
+    )
     from custom_components.localthings.registry.discovery import discover
     from custom_components.localthings.registry.adapter import flatten
     otn = resources.get('/otninformation/vs/0', {})
@@ -19,6 +21,8 @@ def _new_state_keys(name, resources):
             info.get('x.com.samsung.da.modelNum', ''),
             info.get('x.com.samsung.da.description', ''),
         )
+    if reg is None:
+        reg = for_device_by_resources(resources)
     if reg is None:
         from custom_components.localthings.registry.registry import CAPABILITIES
         caps, pats = CAPABILITIES, []
@@ -81,6 +85,18 @@ def test_registry_reproduces_golden_state_keys_for_airconditioner():
     )
 
 
+def test_registry_reproduces_golden_state_keys_for_cooktop():
+    from tests.conftest import _load_device
+    resources = _load_device('cooktop')
+    golden = json.loads((GOLDEN / 'cooktop.json').read_text())
+    state_keys = _new_state_keys('cooktop', resources)
+    assert set(state_keys) == set(golden['state_keys']), (
+        f"state_keys mismatch:\n"
+        f"  extra:   {sorted(set(state_keys) - set(golden['state_keys']))}\n"
+        f"  missing: {sorted(set(golden['state_keys']) - set(state_keys))}"
+    )
+
+
 def test_registry_reproduces_golden_state_keys_for_tp1x_ref_21k_us():
     from tests.conftest import _load_device
     resources = _load_device('refrigerator_tp1x_ref_21k_us')
@@ -95,6 +111,18 @@ def test_registry_reproduces_golden_state_keys_for_tp1x_ref_21k_us():
     )
 
 
+def test_registry_reproduces_golden_state_keys_for_range_hood():
+    from tests.conftest import _load_device
+    resources = _load_device('range_hood')
+    golden = json.loads((GOLDEN / 'range_hood.json').read_text())
+    state_keys = _new_state_keys('range_hood', resources)
+    assert set(state_keys) == set(golden['state_keys']), (
+        f"state_keys mismatch:\n"
+        f"  extra:   {sorted(set(state_keys) - set(golden['state_keys']))}\n"
+        f"  missing: {sorted(set(golden['state_keys']) - set(state_keys))}"
+    )
+
+
 def test_registry_reproduces_golden_state_keys_for_washer_flexwash():
     """FlexWash twin washers (WV-prefix consumer model, e.g. WV55M9600AW)
     report no oneUiVersion and previously fell through for_device_by_model's
@@ -216,6 +244,38 @@ def test_registry_reproduces_golden_state_keys_for_range():
     )
 
 
+def test_registry_reproduces_golden_state_keys_for_air_purifier():
+    """ARTIK051_TVTL_18K (issue #56) -- reports no oneUiVersion; resolved via
+    the '_TVTL_' modelNum token fallback in for_device_by_model."""
+    from tests.conftest import _load_device
+    resources = _load_device('air_purifier')
+    golden = json.loads((GOLDEN / 'air_purifier.json').read_text())
+    state_keys = _new_state_keys('air_purifier', resources)
+    assert set(state_keys) == set(golden['state_keys']), (
+        f"state_keys mismatch:\n"
+        f"  extra:   {sorted(set(state_keys) - set(golden['state_keys']))}\n"
+        f"  missing: {sorted(set(golden['state_keys']) - set(state_keys))}"
+    )
+
+
+def test_registry_reproduces_golden_state_keys_for_oven():
+    """Wall oven (model TP1X_DA-KS-OVEN-0107X, issue #55) -- reports no
+    oneUiVersion; resolved via the '-OVEN-' modelNum token fallback in
+    for_device_by_model, mirroring the '-RANGE-' fallback added for
+    issue #44. Before that fallback existed the device type came back
+    'unknown' and every href fell through to the global CAPABILITIES
+    registry instead of the oven family's own."""
+    from tests.conftest import _load_device
+    resources = _load_device('oven')
+    golden = json.loads((GOLDEN / 'oven.json').read_text())
+    state_keys = _new_state_keys('oven', resources)
+    assert set(state_keys) == set(golden['state_keys']), (
+        f"state_keys mismatch:\n"
+        f"  extra:   {sorted(set(state_keys) - set(golden['state_keys']))}\n"
+        f"  missing: {sorted(set(golden['state_keys']) - set(state_keys))}"
+    )
+
+
 def test_resources_from_batch_preferred_over_flat():
     from tests.conftest import _resources_from_dump
     dump = {

tests/test_oven_capabilities.py

@@ -1,8 +1,30 @@
 """Unit tests for oven-family capabilities."""
+from custom_components.localthings.registry.by_type import for_device_by_model
 from custom_components.localthings.registry.capabilities import oven
 from custom_components.localthings.registry.discovery import discover
 
 
+# ---------------------------------------------------------------------------
+# Device-type detection + full-dump coverage (issue #55)
+# ---------------------------------------------------------------------------
+
+def test_oven_fixture_resolves_and_has_no_unbound_hrefs():
+    """The issue #55 dump previously came back device_type='unknown' with
+    /connected/vs/0 unbound -- resolving via the '-OVEN-' modelNum token
+    fallback must leave every href in the oven registry bound or ignored."""
+    from tests.conftest import _load_device
+    resources = _load_device('oven')
+    info = resources['/information/vs/0']
+    reg = for_device_by_model(
+        info['x.com.samsung.da.modelNum'], info['x.com.samsung.da.description'])
+    assert reg is not None
+    assert reg.name == 'oven'
+
+    unbound = []
+    discover(resources, reg.capabilities, reg.pattern_capabilities, log=unbound.append)
+    assert unbound == []
+
+
 # ---------------------------------------------------------------------------
 # OVEN_SETPOINT — NumberDesc with RMW write semantics
 # ---------------------------------------------------------------------------

tests/test_range_hood_capabilities.py

@@ -0,0 +1,116 @@
+"""Tests for the AHD-WW-TP1-22 range-hood profile."""
+
+from custom_components.localthings.registry.adapter import flatten
+from custom_components.localthings.registry.by_type import for_device_by_model
+from custom_components.localthings.registry.capabilities import range_hood
+from custom_components.localthings.registry.discovery import discover
+from custom_components.localthings.registry.entities import FanDesc
+from tests.conftest import _load_device
+
+
+def _hood():
+    resources = _load_device('range_hood')
+    info = resources['/information/vs/0']
+    registry = for_device_by_model(
+        info['x.com.samsung.da.modelNum'],
+        info['x.com.samsung.da.description'],
+    )
+    return registry, resources
+
+
+def _state():
+    registry, resources = _hood()
+    bound = discover(
+        resources, registry.capabilities, registry.pattern_capabilities,
+    )
+    return flatten(bound, resources)
+
+
+def test_ahd_model_resolves_to_range_hood_registry():
+    registry, _ = _hood()
+    assert registry is not None
+    assert registry.name == 'range_hood'
+
+
+def test_range_hood_has_no_unbound_hrefs():
+    registry, resources = _hood()
+    unbound = []
+    discover(
+        resources,
+        registry.capabilities,
+        registry.pattern_capabilities,
+        log=unbound.append,
+    )
+    assert unbound == []
+
+
+def test_range_hood_fixture_values():
+    state = _state()
+    assert state['fan'] == '14'
+    assert state['alarm_code'] == 'none'
+    assert state['automatic_operation'] is False
+    assert state['lamp'] is False
+    assert state['lamp_brightness'] == '2'
+    assert state['hood_filter_usage'] == 100
+    assert state['hood_filter_status'] == 'wash'
+    assert state['energy_kwh'] == 165.62
+    assert state['clean_level'] == 2
+    assert state['dust'] == 18
+    assert state['fine_dust'] == 14
+    assert state['super_fine_dust'] == 9
+    assert state['periodic_air_sensing'] is False
+    assert state['air_sensing_state'] == 'NonProcessing'
+    assert state['last_air_sensing_level'] == 'Kr2'
+
+
+def test_one_composite_fan_is_bound():
+    registry, resources = _hood()
+    bound = discover(
+        resources, registry.capabilities, registry.pattern_capabilities,
+    )
+    fans = [entity for entity in bound if isinstance(entity.desc, FanDesc)]
+    assert len(fans) == 1
+    assert fans[0].href == '/hood/fanspeed/vs/0'
+
+
+def test_fan_write_contract():
+    desc = range_hood.HOOD_FAN.entities[0]
+    rep = {
+        'x.com.samsung.da.hood.supportedFanSpeed': ['14', '15', '16', '17'],
+    }
+    assert desc.write_fn(('power', True), rep) == (
+        ['power', '0'], {'value': True},
+    )
+    assert desc.write_fn(('power', False), rep) == (
+        ['power', '0'], {'value': False},
+    )
+    assert desc.write_fn(('power', True, '/power/vs/0'), rep) == (
+        ['power', 'vs', '0'], {'x.com.samsung.da.power': 'On'},
+    )
+    assert desc.write_fn(('power', False, '/power/vs/0'), rep) == (
+        ['power', 'vs', '0'], {'x.com.samsung.da.power': 'Off'},
+    )
+    assert desc.write_fn(('power', True, '/not-a-power-resource'), rep) is None
+    assert desc.write_fn(('speed', '16'), rep) == (
+        ['hood', 'fanspeed', 'vs', '0'],
+        {'x.com.samsung.da.hood.fanSpeed': '16'},
+    )
+    assert desc.write_fn(('speed', '99'), rep) is None
+
+
+def test_lamp_write_contract():
+    lamp, brightness = range_hood.HOOD_LAMP.entities
+    rep = {'x.com.samsung.lamp.range': ['1', '2']}
+    assert lamp.write_fn('On', rep) == (
+        ['hood', 'lamp', 'vs', '0'], {'x.com.samsung.lamp.power': 'On'},
+    )
+    assert lamp.write_fn('Off', rep) == (
+        ['hood', 'lamp', 'vs', '0'], {'x.com.samsung.lamp.power': 'Off'},
+    )
+    assert brightness.write_fn('1', rep) == (
+        ['hood', 'lamp', 'vs', '0'], {'x.com.samsung.lamp.current': '1'},
+    )
+    assert brightness.write_fn('2', rep) == (
+        ['hood', 'lamp', 'vs', '0'], {'x.com.samsung.lamp.current': '2'},
+    )
+    assert brightness.write_fn('Unsupported', rep) is None

tests/test_range_hood_fan.py

@@ -0,0 +1,88 @@
+"""HA fan-entity mapping tests for the range hood."""
+
+from custom_components.localthings.fan import LocalThingsRangeHoodFan
+from custom_components.localthings.registry.by_type import range_hood
+from custom_components.localthings.registry.discovery import discover
+from custom_components.localthings.registry.entities import FanDesc
+from tests.conftest import _load_device
+
+
+class _FakeCoordinator:
+    device_serial = 'TEST-HOOD-SERIAL'
+    device_info = {}
+    data = {}
+
+    def __init__(self, resources):
+        self.last_resources = resources
+        self.commands = []
+
+    def resource(self, href):
+        return self.last_resources.get(href, {})
+
+    async def async_send_command(self, bound, payload):
+        self.commands.append((bound, payload))
+
+
+def _entity(resources, coordinator=None):
+    bound = discover(
+        resources,
+        range_hood.REGISTRY.capabilities,
+        range_hood.REGISTRY.pattern_capabilities,
+    )
+    fan_bound = next(item for item in bound if isinstance(item.desc, FanDesc))
+    return LocalThingsRangeHoodFan(
+        coordinator or _FakeCoordinator(resources), fan_bound,
+    )
+
+
+def test_power_off_maps_to_zero_percent_and_four_retained_speeds():
+    entity = _entity(_load_device('range_hood'))
+    assert entity.is_on is False
+    assert entity.speed_count == 4
+    assert entity.percentage == 0
+
+
+def test_active_codes_map_to_ordered_percentages():
+    resources = _load_device('range_hood')
+    resources['/power/0']['value'] = True
+
+    resources['/hood/fanspeed/vs/0'][
+        'x.com.samsung.da.hood.fanSpeed'
+    ] = '14'
+    assert _entity(resources).percentage == 25
+
+    resources['/hood/fanspeed/vs/0'][
+        'x.com.samsung.da.hood.fanSpeed'
+    ] = '15'
+    assert _entity(resources).percentage == 50
+
+    resources['/hood/fanspeed/vs/0'][
+        'x.com.samsung.da.hood.fanSpeed'
+    ] = '16'
+    assert _entity(resources).percentage == 75
+
+    resources['/hood/fanspeed/vs/0'][
+        'x.com.samsung.da.hood.fanSpeed'
+    ] = '17'
+    assert _entity(resources).percentage == 100
+
+
+async def test_power_write_prefers_standard_resource_when_both_exist():
+    resources = _load_device('range_hood')
+    coordinator = _FakeCoordinator(resources)
+    entity = _entity(resources, coordinator)
+
+    await entity.async_turn_on()
+
+    assert coordinator.commands[-1][1] == ('power', True, '/power/0')
+
+
+async def test_power_write_falls_back_to_vendor_resource():
+    resources = _load_device('range_hood')
+    resources.pop('/power/0')
+    coordinator = _FakeCoordinator(resources)
+    entity = _entity(resources, coordinator)
+
+    await entity.async_turn_off()
+
+    assert coordinator.commands[-1][1] == ('power', False, '/power/vs/0')