Add auto-deploy webhook handler

Handles GitHub push webhooks for all 8 repos.
Queues paths to /tmp/jarvis-deploy-queue.txt.
Root cron (/usr/local/bin/jarvis-deploy.sh) processes queue every minute.

public_html/webhook.php

@@ -0,0 +1,58 @@
+<?php
+/**
+ * GitHub Auto-Deploy Webhook
+ * Verifies GitHub HMAC signature, then queues the repo for git pull.
+ * A root cron job (/usr/local/bin/jarvis-deploy.sh) processes the queue every minute.
+ */
+
+define('WEBHOOK_SECRET', '8a8c50c83d37527bdef876f1736b654235724a1a475cb8e5');
+define('DEPLOY_QUEUE',   '/tmp/jarvis-deploy-queue.txt');
+define('DEPLOY_LOG',     '/home/jarvis.orbishosting.com/logs/deploy.log');
+
+header('Content-Type: application/json');
+
+$payload = file_get_contents('php://input');
+$sig     = $_SERVER['HTTP_X_HUB_SIGNATURE_256'] ?? '';
+$expected = 'sha256=' . hash_hmac('sha256', $payload, WEBHOOK_SECRET);
+
+if (!hash_equals($expected, $sig)) {
+    http_response_code(403);
+    echo json_encode(['error' => 'Invalid signature']);
+    exit;
+}
+
+$data  = json_decode($payload, true);
+$repo  = $data['repository']['name'] ?? '';
+$ref   = $data['ref'] ?? '';
+$pusher = $data['pusher']['name'] ?? 'unknown';
+
+// Only deploy on pushes to main
+if ($ref !== 'refs/heads/main') {
+    echo json_encode(['ok' => true, 'skipped' => "ref $ref is not main"]);
+    exit;
+}
+
+$repoMap = [
+    'jarvis'                 => '/home/jarvis.orbishosting.com',
+    'tomsjavajive'           => '/home/tomsjavajive.com/public_html',
+    'epictravelexpeditions'  => '/home/epictravelexpeditions.com/public_html',
+    'parkerslingshotrentals' => '/home/parkerslingshotrentals.com/public_html',
+    'orbishosting'           => '/home/orbishosting.com/public_html',
+    'orbis-hosting-portal'   => '/home/orbis.orbishosting.com/public_html',
+    'tomtomgames'            => '/home/tomtomgames.com/public_html',
+    'infra'                  => '/tmp/infra-current',
+];
+
+if (!isset($repoMap[$repo])) {
+    http_response_code(404);
+    echo json_encode(['error' => "Unknown repo: $repo"]);
+    exit;
+}
+
+$path = $repoMap[$repo];
+file_put_contents(DEPLOY_QUEUE, $path . "\n", FILE_APPEND | LOCK_EX);
+
+$msg = "[" . date('Y-m-d H:i:s') . "] Queued deploy: $repo by $pusher -> $path";
+file_put_contents(DEPLOY_LOG, $msg . "\n", FILE_APPEND | LOCK_EX);
+
+echo json_encode(['ok' => true, 'queued' => $repo, 'path' => $path]);