feat(train): Home opens on this week, its totals and its seven days (ADR 0030, D60)

The week's time, distance and workouts above Home's list, and a strip of
its days, each as tall as the time trained on it, starting on the day the
person's language starts weeks on. Home's empty hint points to the Record
tab, where its button had gone.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Signed-off-by: Tizian 「ティツィアーン」 <raisondetredev@pm.me>

docs/adr/0030-halkyon-train.md

@@ -1497,6 +1497,13 @@ Strava. What was found, 27 Oct:
   (`RecordingBar`, `NavigationFrame.status`); over the Record tab's button alone, which
   had been the one way back. A workout just saved opens its page, in Home's tab, where
   the recording had gone back to the tab it started from (both the developer's, 31 Oct).
+  Home opens on this week, as Strava's (`WeekCard`, `weekSummary`): the time trained
+  (moving time, else start to end), the distance and the workouts, and a strip of its
+  seven days each as tall as its time, the week starting on the day the person's
+  language starts it on (Monday in British English and German, Sunday in American
+  English, Material's `firstDayOfWeekIndex`), each workout on the day it started, local
+  time; over the totals alone and over a chart of several weeks (the developer's,
+  31 Oct).
 
 ## Consequences