feat: Implement video play count tracking, refactor user update API, add missing CMS delete functions, and update database transaction handling.

services/cms-service/migrations/20260116000011_add_delete_functions.sql

@@ -0,0 +1,32 @@
+-- Migration: Add missing delete functions
+-- Adds fn_delete_module and fn_delete_lesson which were missing from the CRUD migration
+
+CREATE OR REPLACE FUNCTION fn_delete_module(
+    p_id UUID,
+    p_organization_id UUID
+) RETURNS BOOLEAN AS $$
+DECLARE
+    v_deleted_count INTEGER;
+BEGIN
+    DELETE FROM modules 
+    WHERE id = p_id AND organization_id = p_organization_id;
+    
+    GET DIAGNOSTICS v_deleted_count = ROW_COUNT;
+    RETURN v_deleted_count > 0;
+END;
+$$ LANGUAGE plpgsql;
+
+CREATE OR REPLACE FUNCTION fn_delete_lesson(
+    p_id UUID,
+    p_organization_id UUID
+) RETURNS BOOLEAN AS $$
+DECLARE
+    v_deleted_count INTEGER;
+BEGIN
+    DELETE FROM lessons 
+    WHERE id = p_id AND organization_id = p_organization_id;
+    
+    GET DIAGNOSTICS v_deleted_count = ROW_COUNT;
+    RETURN v_deleted_count > 0;
+END;
+$$ LANGUAGE plpgsql;