feat: implement daily sadhana streak and consistency tracker

[nitishchaubeyy]

📝 Problem Statement

Spiritual progress is all about consistency (Nirantarata). We need a visual way to show users how many consecutive days they have logged their Japs.

🚀 Proposed Solution

Implement a "Streak" counter that increments every day the user logs at least 1 Jap and resets if a day is missed.

Key Changes:

• Database: Add last_logged_date and current_streak columns to the profiles table.
• Logic: - If (today - last_logged_date) == 1 day, then current_streak += 1.
  • If (today - last_logged_date) > 1 day, then current_streak = 1.
• UI: Add a Flame Icon (🔥) with the streak number on the Dashboard Header.

✅ Acceptance Criteria

• Streak updates automatically upon the first Jap log of the day.
• Visual indicator (Flame/Streak) motivates the user to maintain consistency.
• Historical streak data is saved to show "Longest Streak Ever".