feat(cohorts): rename Programs to Cohorts with data migration (#694)

* feat(cohorts): rename Programs to Cohorts with data migration

- Add cohort database tables and Drizzle migration alongside legacy program tables
- Introduce migrate-programs-to-cohorts script to copy existing program data safely
- Rename API routes (/cohort), services, queries, validation, and error codes
- Rename dashboard feature module, routes (/cohorts), navigation, and translations
- Update docs, emails, and internal compliance cron endpoints for cohort terminology
- Keep legacy program tables in place for rollback until explicitly removed

Co-authored-by: Rotimi Best <rotimi-best@users.noreply.github.com>

* fix(db): restore migrate:answer-data script alongside cohort migration

Co-authored-by: Rotimi Best <rotimi-best@users.noreply.github.com>

* fix(db): cast program enums when migrating data to cohort tables

Co-authored-by: Rotimi Best <rotimi-best@users.noreply.github.com>

* fix(db): truncate cohort tables before program-to-cohort copy

Co-authored-by: Rotimi Best <rotimi-best@users.noreply.github.com>

* fix(db): report accurate row counts in programs-to-cohorts migration

Co-authored-by: Rotimi Best <rotimi-best@users.noreply.github.com>

---------

Co-authored-by: Cursor Agent <cursoragent@cursor.com>
Co-authored-by: Rotimi Best <rotimi-best@users.noreply.github.com>

packages/email/src/emails/cohort-goal-reminder.ts

@@ -4,12 +4,12 @@ import { defineEmail } from '../send';
 import { getDefaultTemplate } from '../templates';
 import { ZEmailBranding } from '../core/branding';
 
-export const programGoalReminderEmail = defineEmail({
-  id: 'programGoalReminder',
-  subject: 'Reminder: a program goal is due soon',
+export const cohortGoalReminderEmail = defineEmail({
+  id: 'cohortGoalReminder',
+  subject: 'Reminder: a cohort goal is due soon',
   schema: z.object({
     orgName: z.string().min(1),
-    programName: z.string().min(1),
+    cohortName: z.string().min(1),
     goalTitle: z.string().min(1),
     daysUntilDue: z.number().int(),
     completedCount: z.number().int(),
@@ -29,7 +29,7 @@ export const programGoalReminderEmail = defineEmail({
 
     const content = `
       <p>Hi there,</p>
-      <p>This is a reminder that the goal <strong>${fields.goalTitle}</strong> in your program <strong>${fields.programName}</strong> at ${fields.orgName} needs your attention.</p>
+      <p>This is a reminder that the goal <strong>${fields.goalTitle}</strong> in your program <strong>${fields.cohortName}</strong> at ${fields.orgName} needs your attention.</p>
       ${dueLine}
       <p>Your progress so far: <strong>${progress}</strong>.</p>
       <p><a href="${fields.loginUrl}">Open the LMS</a> to keep going.</p>

packages/email/src/emails/index.ts

@@ -20,8 +20,8 @@ export * from './teacher-student-buy-request';
 export * from './student-prove-payment';
 export * from './teacher-course-welcome';
 export * from './student-org-invite';
-export * from './student-program-welcome';
-export * from './program-goal-reminder';
+export * from './student-cohort-welcome';
+export * from './cohort-goal-reminder';
 export * from './quiz-assigned';
 export * from './session';
 export * from './submission-received';
@@ -38,8 +38,8 @@ import type { studentCourseCompletionEmail } from './student-course-completion';
 import type { studentCourseWelcomeEmail } from './student-course-welcome';
 import type { studentProvePaymentEmail } from './student-prove-payment';
 import type { studentOrgInviteEmail } from './student-org-invite';
-import type { studentProgramWelcomeEmail } from './student-program-welcome';
-import type { programGoalReminderEmail } from './program-goal-reminder';
+import type { studentCohortWelcomeEmail } from './student-cohort-welcome';
+import type { cohortGoalReminderEmail } from './cohort-goal-reminder';
 import type { quizAssignedEmail } from './quiz-assigned';
 import type { sessionReminderEmail, sessionUpdatedEmail } from './session';
 import type { submissionReceivedEmail } from './submission-received';
@@ -72,8 +72,8 @@ export type EmailSchemas = {
   studentProvePayment: typeof studentProvePaymentEmail.template.schema;
   teacherCourseWelcome: typeof teacherCourseWelcomeEmail.template.schema;
   studentOrgInvite: typeof studentOrgInviteEmail.template.schema;
-  studentProgramWelcome: typeof studentProgramWelcomeEmail.template.schema;
-  programGoalReminder: typeof programGoalReminderEmail.template.schema;
+  studentCohortWelcome: typeof studentCohortWelcomeEmail.template.schema;
+  cohortGoalReminder: typeof cohortGoalReminderEmail.template.schema;
   quizAssigned: typeof quizAssignedEmail.template.schema;
   sessionReminder: typeof sessionReminderEmail.template.schema;
   sessionUpdated: typeof sessionUpdatedEmail.template.schema;

packages/email/src/emails/student-cohort-welcome.ts

@@ -4,20 +4,20 @@ import { defineEmail } from '../send';
 import { getDefaultTemplate } from '../templates';
 import { ZEmailBranding } from '../core/branding';
 
-export const studentProgramWelcomeEmail = defineEmail({
-  id: 'studentProgramWelcome',
-  subject: 'You have access to a program — sign in to get started',
+export const studentCohortWelcomeEmail = defineEmail({
+  id: 'studentCohortWelcome',
+  subject: 'You have access to a cohort — sign in to get started',
   schema: z.object({
     orgName: z.string().min(1),
-    programName: z.string().min(1),
+    cohortName: z.string().min(1),
     loginUrl: z.string().min(1),
     branding: ZEmailBranding
   }),
   render: (fields) => {
     const content = `
       <p>Hi there,</p>
-      <p>You now have access to <strong>${fields.programName}</strong> in <strong>${fields.orgName}</strong>.</p>
-      <p><a href="${fields.loginUrl}">Sign in to the LMS</a> to open the program and start learning.</p>
+      <p>You now have access to <strong>${fields.cohortName}</strong> in <strong>${fields.orgName}</strong>.</p>
+      <p><a href="${fields.loginUrl}">Sign in to the LMS</a> to open the cohort and start learning.</p>
       <p>If you run into any issues, reach out to your instructor(s).</p>
       <p>Cheers,</p>
       <p>${fields.orgName}</p>