Get Weekly Active Users

Get Weekly Active Users (WAU) by tags for the last {MAX_WEEKS} weeks ending on UTC today + 1 day.

Shows week-by-week breakdown:

• Week 1 (Jan 1): Earliest week (7 weeks ago)
• Week 2 (Jan 8): Next week (6 weeks ago)
• Week 3 (Jan 15): Next week (5 weeks ago)
• ... and so on for {MAX_WEEKS} weeks total
• Week 7: Most recent week ending on UTC today + 1 day

Args: tag_filter: Optional filter to specific tag (legacy) tag_filters: Optional filter to multiple specific tags (takes precedence over tag_filter)

Returns: ActiveUsersAnalyticsResponse: WAU data by tag for each of the last {MAX_WEEKS} weeks with descriptive week labels (e.g., "Week 1 (Jan 1)")