feat: resident profile PR 2

[CK-7vn]

Pre-Submission PR Checklist

• No debug/console/fmt.Println statements
• Unnecessary development comments removed
• All acceptance criteria verified
• Functions according to ticket specifications
• Tested manually where applicable
• Branch rebased with latest main
• No business logic exists within the database layer

Description of the change

This is the Resident Profile PR #2

Adds active enrollments table, attendance trend chart, engagement badges, and detailed attendance dialog to the Resident Profile page.

Requirements Covered

- 585 (Engagement Charts -- attendance trend line chart displays last 8 weeks)*
- 586 (Engagement Charts -- chart shows weekly attendance rates correctly)*
- 587 (Engagement Charts -- hovering chart shows tooltip with rate percentage)
- 588 (Engagement Charts -- Y-axis displays 0-100 percent range)
- 589 (Active Enrollments -- program name and class name display in table)
- 590 (Active Enrollments -- schedule displays days and time)*
- 591 (Active Enrollments -- enrolled date formats correctly)
- 592 (Active Enrollments -- attendance shows sessions attended of total)
- 593 (Active Enrollments -- attendance percentage calculates correctly)
- 594 (Active Enrollments -- Strong Engagement badge shows for 80%+ attendance)
- 595 (Active Enrollments -- Check-in Opportunity badge shows for 60-79% attendance)
- 596 (Active Enrollments -- Support Recommended badge shows for below 60% attendance)
- 597 (Active Enrollments -- engagement tooltip explains badge levels)
- 598 (Active Enrollments -- View Details button opens detailed attendance dialog)
- 599 (Active Enrollments -- See X others button shows when more than 3 enrollments)
- 600 (Active Enrollments -- clicking See X others displays all enrollments)
- 601 (Active Enrollments -- Show less button appears when expanded)
- 660 (Detailed Attendance -- dialog opens for enrollment)
- 661 (Detailed Attendance -- dialog shows program and class name)
- 662 (Detailed Attendance -- attendance summary displays in dialog)
- 663 (Detailed Attendance -- Export button appears in dialog)
- 664 (Detailed Attendance -- clicking export shows CSV download success toast)
- 665 (Empty States -- empty enrollments section shows appropriate message)

*Deferred to final PR -- requires backend changes:
- 585, 586: Chart renders but shows empty state until new GET /api/users/{id}/attendance-trend endpoint provides weekly attendance data (attendance records exist with dates in program_class_event_attendance, just need a weekly aggregation query)
- 590: Schedule column renders "-" until schedule field is added to ResidentProgramOverview backend response

Screenshot(s)

PR Resident Profile

Redesign Resident Profile

Additional context

- `engagement-utils.ts` exports `getEngagementIndicator()` as a shared utility -- reusable by PR 3 for completed programs
- `schedule?: string` added to `ResidentProgramOverview` type in preparation for backend field
- Chart component is fully functional and will render data once the backend endpoint is wired in