feat: Implement organization branding, course pacing, and display upcoming deadlines in the experience portal.

services/cms-service/migrations/20251230000001_course_pacing_and_dates.sql

@@ -0,0 +1,8 @@
+-- Phase 5: Course Pacing and Dates
+
+-- Add pacing_mode to courses
+ALTER TABLE courses ADD COLUMN IF NOT EXISTS pacing_mode VARCHAR(50) NOT NULL DEFAULT 'self_paced';
+
+-- Add due_date and important_date_type to lessons
+ALTER TABLE lessons ADD COLUMN IF NOT EXISTS due_date TIMESTAMPTZ;
+ALTER TABLE lessons ADD COLUMN IF NOT EXISTS important_date_type VARCHAR(50);