refactor: retire filtre courrier et lien Vision, prépare module licence Vision

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

web/includes/vision.php

@@ -0,0 +1,76 @@
+<?php
+/**
+ * vision.php — Intégration Vision (licence + config)
+ * CopyMail s'enregistre auprès de Vision et vérifie sa licence.
+ * À compléter avec l'endpoint et le format exact de l'API Vision.
+ */
+
+define('VISION_API_URL', 'https://vision.copydev.fr/api');
+define('VISION_APP_ID',  'copymail');
+
+function vision_check(): array {
+    $keyprog = cfg('vision_keyprog', '');
+    if (!$keyprog) {
+        return ['valid' => false, 'msg' => 'Clé Vision non configurée.'];
+    }
+
+    $payload = [
+        'app'      => VISION_APP_ID,
+        'keyprog'  => $keyprog,
+        'version'  => cfg('app_version', '1.0'),
+        'hostname' => cfg('hostname', gethostname()),
+        'ip'       => $_SERVER['SERVER_ADDR'] ?? '',
+    ];
+
+    $ctx = stream_context_create(['http' => [
+        'method'        => 'POST',
+        'header'        => "Content-Type: application/json\r\n",
+        'content'       => json_encode($payload),
+        'timeout'       => 5,
+        'ignore_errors' => true,
+    ]]);
+
+    $resp = @file_get_contents(VISION_API_URL . '/check', false, $ctx);
+    if ($resp === false) {
+        return ['valid' => true, 'msg' => 'Vision injoignable — mode dégradé.'];
+    }
+
+    $data = json_decode($resp, true);
+    return [
+        'valid'  => (bool)($data['valid'] ?? false),
+        'msg'    => $data['message'] ?? '',
+        'config' => $data['config'] ?? [],
+    ];
+}
+
+function vision_push_config(array $config): void {
+    // Applique la config reçue depuis Vision en BDD
+    foreach ($config as $key => $value) {
+        cfg_set($key, $value);
+    }
+}
+
+function vision_register(): bool {
+    $keyprog = cfg('vision_keyprog', '');
+    if (!$keyprog) return false;
+
+    $payload = [
+        'app'      => VISION_APP_ID,
+        'keyprog'  => $keyprog,
+        'hostname' => cfg('hostname', gethostname()),
+        'domain'   => cfg('domain', ''),
+        'version'  => cfg('app_version', '1.0'),
+        'accounts' => (int)db()->query('SELECT COUNT(*) FROM accounts WHERE active=1')->fetchColumn(),
+    ];
+
+    $ctx = stream_context_create(['http' => [
+        'method'        => 'POST',
+        'header'        => "Content-Type: application/json\r\n",
+        'content'       => json_encode($payload),
+        'timeout'       => 5,
+        'ignore_errors' => true,
+    ]]);
+
+    $resp = @file_get_contents(VISION_API_URL . '/register', false, $ctx);
+    return $resp !== false;
+}