registry: Lock, Color, ColorTemperature, Percentage, PowerLevel, Contact, Motion, Humidity

Eight descriptors written from their pages, each with its version, the value of its property and the payload of
every directive. Seven replace a stub; Alexa.HumiditySensor is new, as AlexaInterfaceType.HUMIDITY_SENSOR.
LockController is deferrable: defer() on a lock logs no warning.

A 1.x declaration of LockController, MotionSensor, PercentageController or PowerLevelController now lists its
property in discovery, where 1.5.2 listed none: the zoo's lock, motion sensor and heater come out as the JSON
Alexa accepted. A payload that does not fit (hue 361, 900 K) is answered with INVALID_VALUE.

48 examples of the eight pages are saved as fixtures. 191 tests pass, 168 before.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

test/fixtures/alexa-docs/alexa-contactsensor/discovery.json

@@ -0,0 +1,59 @@
+{
+  "event": {
+    "header": {
+      "namespace": "Alexa.Discovery",
+      "name": "Discover.Response",
+      "payloadVersion": "3",
+      "messageId": "Unique identifier, preferably a version 4 UUID"
+    },
+    "payload": {
+      "endpoints": [
+        {
+          "endpointId": "Unique ID of the endpoint",
+          "manufacturerName": "Manufacturer of the endpoint",
+          "description": "Smart Sensor by Sensor Maker",
+          "friendlyName": "Bedroom window",
+          "displayCategories": [
+            "CONTACT_SENSOR"
+          ],
+          "cookie": {},
+          "capabilities": [
+            {
+              "type": "AlexaInterface",
+              "interface": "Alexa.ContactSensor",
+              "version": "3",
+              "properties": {
+                "supported": [
+                  {
+                    "name": "detectionState"
+                  }
+                ],
+                "proactivelyReported": true,
+                "retrievable": true
+              }
+            },
+            {
+              "type": "AlexaInterface",
+              "interface": "Alexa.EndpointHealth",
+              "version": "3",
+              "properties": {
+                "supported": [
+                  {
+                    "name": "connectivity"
+                  }
+                ],
+                "proactivelyReported": true,
+                "retrievable": true
+              }
+            },
+            {
+              "type": "AlexaInterface",
+              "interface": "Alexa",
+              "version": "3"
+            }
+          ]
+        }
+      ]
+    }
+  }
+}