refactor(apple-health): drop redundant HK_QUANTITY_TYPE_TO_MEASUREMENT view

The derived map mirrored APPLE_HEALTH_TYPE_MAP one key for one key
with the value narrowed to the measurementType field. Every caller can
read that via APPLE_HEALTH_TYPE_MAP[id]?.measurementType — no external
consumer is depending on the compact view today. Drops the redundant
constant plus the mirror-check test block that only existed to keep
the two tables in sync.

src/lib/measurements/__tests__/apple-health-mapping.test.ts

@@ -3,7 +3,6 @@ import {
   APPLE_HEALTH_SLEEP_STAGE_MAP,
   APPLE_HEALTH_TYPE_MAP,
   HK_QUANTITY_TYPE_DEFERRED,
-  HK_QUANTITY_TYPE_TO_MEASUREMENT,
   mapAppleHealthEntry,
 } from "../apple-health-mapping";
 import { measurementTypeEnum } from "@/lib/validations/measurement";
@@ -111,20 +110,6 @@ describe("APPLE_HEALTH_TYPE_MAP", () => {
   });
 });
 
-describe("HK_QUANTITY_TYPE_TO_MEASUREMENT", () => {
-  it("mirrors APPLE_HEALTH_TYPE_MAP key-for-key", () => {
-    expect(Object.keys(HK_QUANTITY_TYPE_TO_MEASUREMENT).sort()).toEqual(
-      Object.keys(APPLE_HEALTH_TYPE_MAP).sort(),
-    );
-  });
-
-  it("agrees with APPLE_HEALTH_TYPE_MAP on the measurement type per key", () => {
-    for (const [k, t] of Object.entries(HK_QUANTITY_TYPE_TO_MEASUREMENT)) {
-      expect(APPLE_HEALTH_TYPE_MAP[k]?.measurementType).toBe(t);
-    }
-  });
-});
-
 describe("HK_QUANTITY_TYPE_DEFERRED", () => {
   it("contains only valid HealthKit identifier strings", () => {
     for (const id of HK_QUANTITY_TYPE_DEFERRED) {

src/lib/measurements/apple-health-mapping.ts

@@ -287,22 +287,6 @@ export const APPLE_HEALTH_TYPE_MAP: Record<string, AppleHealthMapping> = {
   },
 };
 
-/**
- * Compact `HKQuantityTypeIdentifier* → MeasurementType` view of the
- * same data carried by `APPLE_HEALTH_TYPE_MAP`. Exists so the iOS
- * Swift session and the v1.4.26 XML-import worker can do a cheap
- * lookup without instantiating the full `AppleHealthMapping` record
- * — useful when all the caller wants is the canonical enum value
- * for routing / filtering. Always stays a strict subset of the keys
- * in the table above.
- */
-export const HK_QUANTITY_TYPE_TO_MEASUREMENT: Record<
-  string,
-  import("@/generated/prisma/client").MeasurementType
-> = Object.fromEntries(
-  Object.entries(APPLE_HEALTH_TYPE_MAP).map(([k, v]) => [k, v.measurementType]),
-);
-
 /**
  * HK identifiers the iOS app may emit that HealthLog deliberately does
  * NOT map yet. Listing them here means the batch route can log a