fix(ctf): align profile/share hint-cost scoring with stats endpoint

[nitinawari]

close #465
What changed

• Updated profile/share scoring paths to load all progress rows for the user.
• Kept completion metrics based on status == "completed" for completion-related counts.
• Calculated hints_cost from all progress rows so point deductions match /api/v1/stats.

Impact

• total_points displayed in profile/share now matches stats behavior.
• No intended change to completion counts, category progress logic, or activity feed semantics.

point-2.mp4