Writing streaks and richer activity stats

See writing streaks, published work, and a clearer summary of creative activity over time.

The activity view now reflects more than a raw document count.

What changed

See your current and longest writing streak.
Count published documents alongside created and updated work.
Separate text, image, and document activity where useful.
Review activity in personal or workspace context.
Keep date calculations aligned with the user's local day instead of server time.

Activity statistics summarize work patterns; they do not make private documents public.