Feature: clickable program bar on Dashboard + program workout shortcut on Log page

Dashboard:
- The program bar at the top of the home page is now clickable and
  navigates to the program detail page. Backend get_today_status now
  returns program_id alongside name/day/total_days.

LogActivity:
- On mount, fetches the user's active catalog program and its today's
  workout. If there's an uncompleted non-rest workout for today, a
  featured 'Today's Program Workout' card appears at the top with an
  exercise preview and a one-tap '✓ Complete — 75 pts' button.
- Tapping Complete fires the same /workout/{id}/complete endpoint as
  ProgramDetail, surfaces weekly/completion bonuses in the success
  message, and returns to the Dashboard.
- The standard category grid below is now relabeled 'Or log something
  else' when a program workout is available.

backend/app/services/points_engine.py

@@ -126,6 +126,7 @@ async def get_today_status(db: AsyncSession, user_id: uuid.UUID) -> dict:
         "rewards_available": rewards,
         "week_points": week_pts,
         "weekly_target": weekly_tgt,
+        "program_id": program["id"] if program else None,
         "program_day": program["day"] if program else None,
         "program_total_days": program["total_days"] if program else None,
         "program_name": program["name"] if program else None,