fix double protocol in webhook URL construction

PORTAL_HOST was set with protocol already included, causing URLs like
https://https//... Strip any existing protocol from PORTAL_HOST before
constructing webhookBase. Fixed in portal, devices, and payouts routes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/routes/devices.routes.js

@@ -560,7 +560,8 @@ router.post("/:id/renew", async (req, res) => {
     );
 
     // Initiate Snippe payment to tenant's phone
-    const webhookBase = `${process.env.PORTAL_SCHEME || "http"}://${process.env.PORTAL_HOST}`;
+    const host = (process.env.PORTAL_HOST || '').replace(/^https?:\/\//, '');
+    const webhookBase = `${process.env.PORTAL_SCHEME || "http"}://${host}`;
     try {
       await snippe.createPayment({
         reference,

src/routes/payouts.routes.js

@@ -66,7 +66,8 @@ router.post('/', async (req, res) => {
     );
 
     const payoutId  = result.insertId;
-    const webhookBase = `${process.env.PORTAL_SCHEME || 'http'}://${process.env.PORTAL_HOST}`;
+    const host = (process.env.PORTAL_HOST || '').replace(/^https?:\/\//, '');
+    const webhookBase = `${process.env.PORTAL_SCHEME || 'http'}://${host}`;
 
     // Call Snippe disbursement
     try {

src/routes/portal.routes.js

@@ -168,7 +168,8 @@ router.post('/:siteId/purchase', purchaseLimiter, async (req, res) => {
       [reference, device.client_id, device.id, plan.id, phone, plan.price, device.commission_rate]
     );
 
-    const webhookBase = `${process.env.PORTAL_SCHEME || 'http'}://${process.env.PORTAL_HOST}`;
+    const host = (process.env.PORTAL_HOST || '').replace(/^https?:\/\//, '');
+    const webhookBase = `${process.env.PORTAL_SCHEME || 'http'}://${host}`;
     try {
       await snippe.createPayment({
         reference,