fix(doctor-report): resolve recovery by night in the user timezone

Pass the report's timezone into the canonical recovery resolution so the PDF
buckets a WHOOP-native row and its computed proxy onto the same physiological
night — the proxy is stamped the day that ended while WHOOP stamps the wake
morning — instead of a raw calendar day. Aligns the printed recovery summary
with the tile, the coach, and the companion feed.

src/lib/__tests__/doctor-report-recovery-canonical.test.ts

@@ -14,11 +14,14 @@ describe("summariseCanonicalRecovery", () => {
     ).toBeNull();
   });
 
-  it("prefers the WHOOP-native row over the COMPUTED proxy per day", () => {
-    // The same day has a low proxy AND a high native row. The PDF must read the
-    // native value, not blend both into one average.
+  it("prefers the WHOOP-native row over the COMPUTED proxy per night", () => {
+    // ONE physiological night (wake morning Jun 1) carries both rows on their
+    // real, off-by-one stamps: WHOOP stamps the wake morning (Jun 1), the
+    // COMPUTED proxy stamps the day that ended (May 31 noon). The resolver
+    // shifts the proxy onto the wake day so they collapse to one night, and the
+    // PDF reads the native value, not a blend.
     const summary = summariseCanonicalRecovery([
-      m("RECOVERY_SCORE", 50, "2026-06-01T12:00:00Z", "COMPUTED"),
+      m("RECOVERY_SCORE", 50, "2026-05-31T12:00:00Z", "COMPUTED"),
       m("RECOVERY_SCORE", 80, "2026-06-01T06:00:00Z", "WHOOP"),
     ]);
     expect(summary).not.toBeNull();
@@ -30,14 +33,18 @@ describe("summariseCanonicalRecovery", () => {
     expect(summary!.count).toBe(1);
   });
 
-  it("summarises across days using one canonical row each", () => {
+  it("summarises across nights using one canonical row each", () => {
+    // Night A (wake Jun 1): WHOOP 80 + its COMPUTED proxy 40 (stamped May 31
+    // noon) collapse to the native 80. Night B (wake Jun 2): a COMPUTED-only
+    // proxy 60, stamped Jun 1 noon, stands alone.
     const summary = summariseCanonicalRecovery([
-      m("RECOVERY_SCORE", 60, "2026-06-02T12:00:00Z", "COMPUTED"),
+      m("RECOVERY_SCORE", 60, "2026-06-01T12:00:00Z", "COMPUTED"),
       m("RECOVERY_SCORE", 80, "2026-06-01T06:00:00Z", "WHOOP"),
-      m("RECOVERY_SCORE", 40, "2026-06-01T12:00:00Z", "COMPUTED"),
+      m("RECOVERY_SCORE", 40, "2026-05-31T12:00:00Z", "COMPUTED"),
     ]);
     expect(summary!.count).toBe(2);
-    // Canonical set: 06-02 COMPUTED 60, 06-01 WHOOP 80 (proxy 40 dropped).
+    // Canonical set: night B COMPUTED 60 (latest stamp), night A WHOOP 80
+    // (proxy 40 dropped).
     expect(summary!.latest).toBe(60);
     expect(summary!.min).toBe(60);
     expect(summary!.max).toBe(80);