feat(measurements): accept indoor CO2, temperature and humidity

Room climate from a home automation system gets three types of its own:
INDOOR_CO2 (ppm), INDOOR_TEMPERATURE (celsius, shown in Fahrenheit for
imperial readers) and INDOOR_HUMIDITY (percent). They arrive through the
existing ingest token (measurements:write, source EXTERNAL), sit in the
environment cluster beside daylight, and the daily rollup carries their
mean, low and high like any spot reading. They never mix with the body
temperatures or with the outdoor environment channels.

The Home Assistant page documents the three types, a rest_command that
sends a room as one request, a single-room automation, and an
importable blueprint (docs/integrations/blueprints) that skips sensors
reporting unknown or non-numeric states, converts Fahrenheit, and
stamps readings to the minute so a retried push is refused rather than
written twice.

src/lib/__tests__/measurement-type-enum-coverage.test.ts

@@ -120,10 +120,14 @@ const EXPECTED_TYPES = [
   "MINDFUL_MINUTES",
   "STATE_OF_MIND_VALENCE",
   "AFIB_BURDEN",
+  // ── v1.44 — room climate pushed through the ingest token ──
+  "INDOOR_CO2",
+  "INDOOR_TEMPERATURE",
+  "INDOOR_HUMIDITY",
 ] as const;
 
 describe("measurementTypeEnum coverage", () => {
-  it("exposes the 83 canonical measurement types", () => {
+  it("exposes the 86 canonical measurement types", () => {
     expect([...measurementTypeEnum.options].sort()).toEqual(
       [...EXPECTED_TYPES].sort(),
     );