v1.4.37 — final web polish before iOS focus

Carries the v1.4.36 perf carry-over for the full /api/analytics
route (correlations + healthScore + bp_in_target on the rollup-
coverage probe, 111s cold worst-case down to ~1.5-3s on power-user
accounts), consolidates Apple Health step samples into a one-row-
per-day list view with chevron drill-down and a nightly drain
(~50x table compression once it converges), restores
IntakeHistoryListV2 to the pre-v1.4.28 contract, converges every
Coach affordance behind a single feature gate with an invariant
test pin, lifts the medication-detail Mounjaro card to byte-
equivalent parity with Ramipril, brings the Insights overview
hero row to height parity, hardens getClientIp behind a new
TRUST_CF_CONNECTING_IP env flag, ships the Arztbericht hero card
on Settings -> Export, adds the Medikamenteneinnahme quick-add
overlay to the dashboard, drops the timezone override toggle for
a silent browser-zone auto-seed, and fixes the v1.4.36 red CI
workflows. Documentation refreshed across all three repos with
five new architecture diagrams in the Dracula palette. Unit suite
4354 -> 4486 passing; typecheck + lint clean.

docs/api/openapi.yaml

@@ -2498,6 +2498,17 @@ paths:
             enum:
               - rollup
             type: string
+        - in: query
+          name: groupBy
+          schema:
+            enum:
+              - day
+            type: string
+        - in: query
+          name: dayKey
+          schema:
+            pattern: ^\d{4}-\d{2}-\d{2}$
+            type: string
       responses:
         "200":
           content: