feat: Introduce AI code hinting, enforce single-tenant organization model, and add a Code Lab block component.

services/cms-service/migrations/20260111000005_crud_functions.sql

@@ -211,18 +211,12 @@ CREATE OR REPLACE FUNCTION fn_register_user(
     p_password_hash VARCHAR(255),
     p_full_name VARCHAR(255),
     p_role VARCHAR(50),
-    p_org_name VARCHAR(255)
+    p_org_name VARCHAR(255) -- Preserved for signature compatibility but ignored
 ) RETURNS SETOF users AS $$
 DECLARE
-    v_org_id UUID;
+    v_org_id UUID := '00000000-0000-0000-0000-000000000001';
 BEGIN
-    -- Find or create organization
-    INSERT INTO organizations (name) 
-    VALUES (p_org_name) 
-    ON CONFLICT (name) DO UPDATE SET name = EXCLUDED.name 
-    RETURNING id INTO v_org_id;
-
-    -- Create user
+    -- Create user in default organization
     RETURN QUERY
     INSERT INTO users (email, password_hash, full_name, role, organization_id)
     VALUES (p_email, p_password_hash, p_full_name, p_role, v_org_id)

services/cms-service/migrations/20260309000001_enforce_single_tenant_org_name.sql

@@ -0,0 +1,29 @@
+-- Migration: Enforce single-tenant and update organization name
+-- This migration updates fn_register_user to always use the default organization ID (0...1)
+-- but allows updating its name during the initial registration.
+
+CREATE OR REPLACE FUNCTION fn_register_user(
+    p_email VARCHAR(255),
+    p_password_hash VARCHAR(255),
+    p_full_name VARCHAR(255),
+    p_role VARCHAR(50),
+    p_org_name VARCHAR(255) DEFAULT NULL
+) RETURNS SETOF users AS $$
+DECLARE
+    v_org_id UUID := '00000000-0000-0000-0000-000000000001';
+BEGIN
+    -- Update the default organization name if a custom name is provided
+    IF p_org_name IS NOT NULL AND p_org_name <> '' AND p_org_name <> 'Default Organization' AND p_org_name <> 'Organización por Defecto' THEN
+        UPDATE organizations 
+        SET name = p_org_name, 
+            updated_at = NOW() 
+        WHERE id = v_org_id;
+    END IF;
+
+    -- Create user and assign to the default organization
+    RETURN QUERY
+    INSERT INTO users (email, password_hash, full_name, role, organization_id)
+    VALUES (p_email, p_password_hash, p_full_name, p_role, v_org_id)
+    RETURNING *;
+END;
+$$ LANGUAGE plpgsql;