registry: describe an Alexa interface as data

src/registry/ holds what the library knows about an interface: namespace, version, the page it was read from,
properties with their value schemas and directives with their payload schemas. Five interfaces are described
(Alexa, PowerController, BrightnessController, TemperatureSensor, EndpointHealth); the other 65 names of
AlexaInterfaceType are stubs with the version and property names of 1.5.2. schema.ts is the run-time check behind
it (241 lines, no new dependency), catalog.ts the vocabularies of the pages: 103 assets (23 units), 6 actions,
9 states, 56 display categories, 22 reserved words, 73 error types under 11 namespaces.

AlexaInterface.getVersion() and getProps() read the registry; the two switch statements are gone (-167 lines).
On the wire: Alexa.EndpointHealth is announced at 3.1 (was 3.3; the page is titled 3.1 and no page mentions 3.3),
and TimeHoldController and Camera.LiveViewController at 3 and 1.7 (1.5.2 sent the string "UNKNOWN").
DisplayCategory gains VACUUM. New exports: registry, DeclarationError, SchemaError, Assets, Units, Actions,
States, DisplayCategories and the descriptor types.

Tests: 20 JSON examples of the five pages under test/fixtures/alexa-docs; every directive payload and property
value in them parses with its descriptor. npm test: 57 pass (was 30) in 10.8 s, also on Node 18.20.8 and 20.20.2.

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

dist/cjs/registry/interfaces/TemperatureSensor.js

@@ -0,0 +1,18 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TemperatureSensor = void 0;
+const schema_js_1 = require("../schema.js");
+const types_js_1 = require("../types.js");
+/** A sensor: an endpoint that has it declares Alexa.EndpointHealth as well (alexa-temperaturesensor.html). */
+exports.TemperatureSensor = (0, types_js_1.defineInterface)({
+    namespace: "Alexa.TemperatureSensor",
+    version: "3",
+    doc: "https://developer.amazon.com/docs/alexaplus/device-apis/alexa-temperaturesensor.html",
+    kind: "sensor",
+    tier: 1,
+    instanced: false,
+    properties: {
+        temperature: { name: "temperature", value: schema_js_1.s.temperature() },
+    },
+    directives: {},
+});