Replace map-view badge with daily goals + completion bonus

[gaidheal1]

Closes #751.

Summary

Replaces the map view's points_today badge (which showed 0 for any activity under 10 minutes due to integer floor division) with three intentionally easy daily goals plus a one-off AP completion bonus:

1. Logged in today — binary, satisfied by having a session today.
2. Completed 1 activity today — not scaled to require multiple activities.
3. 3+ minutes of activity time recorded today — cumulative across activities, not a per-activity minimum.

Clearing all three once in a day awards a lump-sum AP top-up via the existing AP system (Player.add_activity) — no new currency.

Backend

• progression/daily_goals.py — get_daily_goals_state() (live goal computation, no stored counters) and check_and_award_daily_goals() (idempotent bonus award).
• DailyGoalAward(player, date) (progression/models.py) — unique-constrained record that makes the bonus award idempotent under concurrent activity completions, following the same shape as OfflineActivityLedger.
• GameSettings.daily_goals_completion_bonus_ap (default 50) — admin-configurable bonus amount, alongside the existing task_completion_xp-style lump-sum grants.
• Wired into both activity-completion paths — ActivityTimer.complete() and progression.services.log_offline_activity() — since goal 2 says "completed 1 activity," not "used the timer."
• MeViewSet.daily_goals (api/views.py) replaces today_points, returning the full goal state (goals: null when the player has no active PlayerCharacterLink, same hide-the-badge-entirely convention as before).
• Removed PlayerCharacterLink.player_time_today/points_today, now dead now that the endpoint no longer reads them (removed their tests too).

Frontend

• DailyGoalsBadge replaces TodayPointsBadge — shows the three goals plus a bonus message once cleared.
• useDailyGoals/fetchDailyGoals replace useTodayPoints/fetchTodayPoints; the todayPointsBadge feature flag is renamed dailyGoalsBadge.

Out of scope (per #751)

• No changes to PlayerCharacterLink.link_points or its constituent terms.
• No connection to XpModifier/live productivity modifiers.
• No continuation/streak layer beyond the three daily goals.

Test plan

• manage.py test — full suite (769 tests) green, including new progression/tests/test_daily_goals.py and updated timer/offline-logging tests.
• manage.py makemigrations --check — no drift.
• Frontend npm run test (540 tests), npm run lint, npx tsc --noEmit, npm run build:production all clean.

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Generated by Claude Code

[gaidheal1]

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