fix(oura): stop importing the equivalent walking distance as distance

Oura's equivalent_walking_distance is the distance a walk of the day's
effort would have covered, not distance travelled. Written as
WALKING_RUNNING_DISTANCE it counted a bike ride or a yoga hour as
kilometres walked. The daily activity mapper now writes steps and active
energy only.

src/lib/oura/__tests__/client.test.ts

@@ -471,7 +471,7 @@ describe("mapSleep", () => {
 });
 
 describe("mapDailyActivity", () => {
-  it("maps steps, active energy, and equivalent walking distance (m)", () => {
+  it("maps steps and active energy, and never the equivalent walking distance", () => {
     const a: OuraDailyActivity = {
       id: "1",
       day: "2026-06-10",
@@ -484,12 +484,12 @@ describe("mapDailyActivity", () => {
     expect(mapped.find((m) => m.type === "ACTIVE_ENERGY_BURNED")?.value).toBe(
       412,
     );
-    const dist = mapped.find((m) => m.type === "WALKING_RUNNING_DISTANCE");
-    expect(dist).toMatchObject({
-      value: 6543,
-      unit: "m",
-      fieldTag: "distance",
-    });
+    // An activity equivalent, not distance travelled: no distance row at all.
+    expect(mapped.map((m) => m.type).sort()).toEqual([
+      "ACTIVE_ENERGY_BURNED",
+      "ACTIVITY_STEPS",
+    ]);
+    expect(mapped.some((m) => m.fieldTag === "distance")).toBe(false);
   });
 });
 

src/lib/oura/client.ts

@@ -449,7 +449,11 @@ export interface OuraDailyActivity {
   steps?: number | null;
   active_calories?: number | null;
   total_calories?: number | null;
-  /** Equivalent walking distance for the day, metres. */
+  /**
+   * Oura's activity-equivalent distance, metres: what a walk of the day's
+   * effort would have covered. Not distance travelled; never imported (see
+   * `mapDailyActivity`).
+   */
   equivalent_walking_distance?: number | null;
 }
 
@@ -972,8 +976,17 @@ export function mapDailySpo2(
   ];
 }
 
-/** Map one Oura daily-activity record: steps, active energy, and the
- * equivalent walking distance (B5 — the OURA distance ladder slot was dead). */
+/**
+ * Map one Oura daily-activity record: steps and active energy.
+ *
+ * `equivalent_walking_distance` is deliberately not mapped. Oura derives it
+ * from the day's whole activity (the distance a walk of the same effort would
+ * have covered), so an hour of cycling or yoga adds kilometres nobody walked.
+ * Stored as `WALKING_RUNNING_DISTANCE` it read as real distance, and on a day
+ * no other source covered it became the day's distance. The rows earlier
+ * syncs wrote under `activity:<day>:distance` are retired on their own
+ * (`./retire-distance`).
+ */
 export function mapDailyActivity(
   a: OuraDailyActivity,
   tz?: string,
@@ -999,20 +1012,6 @@ export function mapDailyActivity(
       fieldTag: "active_energy",
     });
   }
-  if (
-    typeof a.equivalent_walking_distance === "number" &&
-    a.equivalent_walking_distance >= 0
-  ) {
-    out.push({
-      type: "WALKING_RUNNING_DISTANCE",
-      // Oura reports the equivalent walking distance in metres — the canonical
-      // WALKING_RUNNING_DISTANCE unit (no conversion).
-      value: importValue(a.equivalent_walking_distance),
-      unit: "m",
-      measuredAt,
-      fieldTag: "distance",
-    });
-  }
   return out;
 }
 

src/lib/oura/sync.ts

@@ -4,7 +4,7 @@
  * Pulls daily readiness (→ RECOVERY_SCORE + BODY_TEMPERATURE_DEVIATION), sleep
  * (real per-segment hypnogram timeline when present, else per-stage totals;
  * efficiency, HRV, RHR, respiratory rate), daily activity (steps, active
- * energy, equivalent walking distance), the daily Sleep Score (→ SLEEP_SCORE),
+ * energy), the daily Sleep Score (→ SLEEP_SCORE),
  * daily SpO2 (→ OXYGEN_SATURATION), the dedicated vO2_max collection (→
  * VO2_MAX), and the daily cardiovascular-age estimate (→ VASCULAR_AGE) for one
  * connected user, mapping each into `Measurement` rows tagged `source = OURA`.