fix(auth): register magic_link event type + use admin productId for enterprise IdP

- Register 'auth.magic_link_requested' in @bytelyst/events PlatformEventSchemas
- Remove any-cast from magic-link/routes.ts — now properly typed
- Enterprise IdP creation uses admin's JWT productId instead of hardcoded 'smartauth'
- All 53 auth tests passing

packages/events/src/types.ts

@@ -67,6 +67,13 @@ export const PlatformEventSchemas = {
     secondaryUserId: z.string(),
     productId: z.string(),
   }),
+  'auth.magic_link_requested': z.object({
+    userId: z.string(),
+    email: z.string(),
+    token: z.string(),
+    productId: z.string(),
+    expiresAt: z.string(),
+  }),
 
   // Subscription events
   'subscription.created': z.object({

services/platform-service/src/modules/auth/enterprise/routes.ts

@@ -53,10 +53,11 @@ export async function enterpriseRoutes(app: FastifyInstance) {
     }
 
     const now = new Date().toISOString();
+    const adminProductId = payload.productId ?? 'smartauth';
     const doc: EnterpriseIdpDoc = {
       id: `idp_${data.orgId}_${data.protocol}_${randomUUID().slice(0, 6)}`,
       orgId: data.orgId,
-      productId: 'smartauth',
+      productId: adminProductId,
       protocol: data.protocol,
       name: data.name,
       emailDomains: data.emailDomains.map(d => d.toLowerCase()),

services/platform-service/src/modules/auth/magic-link/routes.ts

@@ -49,8 +49,7 @@ export async function magicLinkRoutes(app: FastifyInstance) {
       await repo.create(doc);
 
       // Emit event for delivery module to send email
-      // eslint-disable-next-line @typescript-eslint/no-explicit-any
-      (bus as any).emit('auth.magic_link_requested', {
+      await bus.emit('auth.magic_link_requested', {
         userId: user.id,
         email: user.email,
         token,