Adds StatusSectionsMixin._section_streak, called from
StatusWindow.render: the stored consecutive 5+-workout-week streak and
the reward message the week transition produced, display only. A streak
of 0 is stated plainly, never padded; a "Streak reset" message is
warning-coloured, not green. get_status already returned the streak
(it is asdict(gather_status())); StatusSnapshot gains week_rewards.
The week-transition strings used to go to _logger.info only.
process_week_transition now also keeps them under a week_rewards key in
the existing extra_benefits_state.json (no new file), read back for the
current ISO week by week_rewards(). Their "early-bird extended to 09:00"
clause is dropped: early_bird_extended is read only by display code, no
lock or window decision uses it (early bird is wake-alarm's signed
exemption since 2026-09-20), so it is not shown in the window either.
Per kuhy: no daily-streak state, no shutdown time for streaks, no
freezes or grace days; no enforcement logic touched.
Red first: new section/state/snapshot tests failed, then passed. On a
scratch copy of the real state the window shows "7-week streak" and
"6 workouts in 2026-W43! 7-week streak", no early-bird line.
Removes prompts/TODO-dopamine-ux-04-screen-locker.md (done).
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WzxdWYdwRAtMg7ki6TKxuU
