Ck 7vn/class detail roster

[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

PR 2 of 4 — Introduces the refactored class detail page with the shell layout and first two tabs: Roster and Enrollment History.

Class Detail Shell (index.tsx):

• Full page layout with breadcrumb navigation, ClassHeader with stat cards (attendance rate, enrollment, capacity, sessions, completion)
• Header actions: Edit Class (modal), Take Attendance (modal), Delete Class (dropdown, disabled when residents enrolled)
• Tab container wired for Roster and Enrollment History (remaining tabs added in PRs 3-4)

ClassHeader + Modals (6 files):

• ClassHeader.tsx: class title, status badge, program link, instructor, schedule info, stat cards with attendance metrics
• ChangeClassStatusModal.tsx: activate/complete/archive class with confirmation
• DeleteClassModal.tsx: delete class with safety check
• EditClassModal.tsx: full class edit form (name, instructor, room, capacity, schedule, dates)
• TakeAttendanceModal.tsx: quick attendance launcher with event selection

Roster Tab (5 files):

• RosterTab.tsx: resident list with search, status filter, enroll/unenroll/graduate actions
• EnrollResidentsModal.tsx: search and enroll residents with debounced lookup
• UnenrollResidentModal.tsx: unenroll with confirmation
• ChangeEnrollmentStatusModal.tsx: change enrollment status with reason
• BulkGraduateModal.tsx: graduate multiple residents at once

Enrollment History Tab (1 file):

• EnrollmentHistoryTab.tsx: historical enrollment records with date, status, and resident info

Routing + ClassesPage (2 files):

• program-routes.tsx: adds /program-classes/:class_id/detail route
• ClassesPage.tsx: integrates TakeAttendanceModal for quick attendance from the classes list

[corypride]

Just a couple things https://drive.google.com/file/d/1UEnxc1mO04ty1fJ4lhysw3TDm7gklBxU/view?usp=sharing

[CK-7vn]

@corypride Awesome, those changes were made, you will see in the Edit Class modal I've included Credit Hours, i think that could potentially be a valuable field to keep editable. Courses and programs can lose and gain credit hours throughout their lifetime so you will see that discrepancy in this PR. Also, we have historically and do currently have "Paused" as a class status value, so that is included in this PR, but it is not included/in the prototype, I'm unsure on if it is the plan to remove the paused option (my assumption would be no) but it's included needless to say.

[corypride]

Few small things here.

[corypride]

Good Work Sir!