feat: Implement LTI deep linking, live sessions, predictive analytics, and portfolios with associated UI and database migrations.

services/lms-service/migrations/20260218000002_lesson_dependencies_mirror.sql

@@ -0,0 +1,14 @@
+CREATE TABLE lesson_dependencies (
+    id UUID PRIMARY KEY DEFAULT gen_random_uuid(),
+    organization_id UUID NOT NULL REFERENCES organizations(id) ON DELETE CASCADE,
+    lesson_id UUID NOT NULL REFERENCES lessons(id) ON DELETE CASCADE,
+    prerequisite_lesson_id UUID NOT NULL REFERENCES lessons(id) ON DELETE CASCADE,
+    min_score_percentage DOUBLE PRECISION,
+    created_at TIMESTAMPTZ NOT NULL DEFAULT NOW(),
+    UNIQUE(lesson_id, prerequisite_lesson_id),
+    CHECK (lesson_id != prerequisite_lesson_id)
+);
+
+CREATE INDEX idx_lesson_dependencies_lesson_id ON lesson_dependencies(lesson_id);
+CREATE INDEX idx_lesson_dependencies_prerequisite_id ON lesson_dependencies(prerequisite_lesson_id);
+CREATE INDEX idx_lesson_dependencies_org_id ON lesson_dependencies(organization_id);