diff --git a/server/admin/launcher.php b/server/admin/launcher.php
new file mode 100644
index 0000000..e3e9f85
--- /dev/null
+++ b/server/admin/launcher.php
@@ -0,0 +1,189 @@
+<?php
+declare(strict_types=1);
+require __DIR__ . '/lib/Auth.php';
+require __DIR__ . '/lib/Layout.php';
+
+use PSLauncher\Admin\Auth;
+use PSLauncher\Admin\Layout;
+
+Auth::requireLogin();
+$config = require __DIR__ . '/../api/config.php';
+
+$root         = dirname(__DIR__);
+$manifestPath = "$root/manifest/versions.json";
+$buildsDir    = "$root/builds";
+
+$message = null; $messageType = 'success';
+
+function loadManifest(string $path): array
+{
+    if (!is_file($path)) return ['schemaVersion' => 1, 'versions' => []];
+    return json_decode(file_get_contents($path), true) ?? [];
+}
+
+function saveManifest(string $path, array $manifest): void
+{
+    usort($manifest['versions'] ?? [], fn($a, $b) => version_compare($b['version'], $a['version']));
+    file_put_contents(
+        $path,
+        json_encode($manifest, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES) . "\n"
+    );
+}
+
+if ($_SERVER['REQUEST_METHOD'] === 'POST') {
+    Auth::checkCsrf();
+    $action = $_POST['action'] ?? '';
+    $manifest = loadManifest($manifestPath);
+
+    try {
+        if ($action === 'set_launcher') {
+            $lver  = trim($_POST['launcher_version'] ?? '');
+            $lmin  = trim($_POST['launcher_min_required'] ?? '');
+            if (!preg_match('/^\d+\.\d+\.\d+$/', $lver)) {
+                throw new Exception('Numéro de version launcher invalide (X.Y.Z attendu).');
+            }
+            if ($lmin !== '' && !preg_match('/^\d+\.\d+\.\d+$/', $lmin)) {
+                throw new Exception('Numéro de version "minRequired" invalide.');
+            }
+            $base = $config['base_url'] ?? 'https://asterionvr.com/PS_Launcher';
+            $manifest['launcher'] = [
+                'version'         => $lver,
+                'minRequired'     => $lmin !== '' ? $lmin : '0.5.0',
+                'download'        => [
+                    'url'       => "{$base}/builds/launcher/PSLauncher-{$lver}.exe",
+                    'sizeBytes' => 0,
+                    'sha256'    => 'REPLACE_AFTER_BUILD',
+                ],
+                'releaseNotesUrl' => null,
+            ];
+            saveManifest($manifestPath, $manifest);
+            $message = "Section launcher mise à jour (v{$lver}). Upload PSLauncher-{$lver}.exe dans builds/launcher/ puis clique « Hasher le launcher + signer ».";
+        }
+        elseif ($action === 'remove_launcher') {
+            unset($manifest['launcher']);
+            saveManifest($manifestPath, $manifest);
+            $message = "Section launcher retirée du manifest (auto-update désactivé).";
+        }
+        elseif ($action === 'sync_launcher') {
+            require_once "$root/tools/SignManifest.php";
+            $signer = new \PSLauncher\Tools\SignManifest($root);
+            $result = $signer->run('launcher');
+            $message = "Sortie du script (scope: launcher) :\n" . implode("\n", $result['log']);
+            if (!$result['ok']) $messageType = 'error';
+        }
+    } catch (Exception $e) {
+        $message = $e->getMessage();
+        $messageType = 'error';
+    }
+}
+
+$manifest = loadManifest($manifestPath);
+$launcher = $manifest['launcher'] ?? null;
+$launcherFiles = is_dir("$buildsDir/launcher")
+    ? array_map('basename', glob("$buildsDir/launcher/*.exe") ?: [])
+    : [];
+
+$launcherZipPresent = false;
+$launcherHashed = false;
+if ($launcher) {
+    $expectedFile = basename(parse_url($launcher['download']['url'] ?? '', PHP_URL_PATH) ?? '');
+    $launcherZipPresent = in_array($expectedFile, $launcherFiles, true);
+    $launcherHashed = !empty($launcher['download']['sha256'])
+        && !str_starts_with($launcher['download']['sha256'], 'REPLACE');
+}
+
+Layout::header('Launcher', 'launcher');
+?>
+<h1>Launcher — auto-update</h1>
+
+<?php Layout::flash($message, $messageType); ?>
+
+<div class="card">
+    <h2>État actuel</h2>
+    <?php if ($launcher): ?>
+        <p>
+            Version annoncée : <strong>v<?= htmlspecialchars($launcher['version']) ?></strong>
+            • minRequired : <code><?= htmlspecialchars($launcher['minRequired'] ?? '—') ?></code>
+            • Exe : <?= $launcherZipPresent
+                ? "<span class='badge badge-success'>présent</span>"
+                : "<span class='badge badge-warning'>absent</span>" ?>
+            • Hash : <?= $launcherHashed
+                ? "<span class='badge badge-success'>OK</span>"
+                : "<span class='badge badge-warning'>à calculer</span>" ?>
+            • Signature manifest : <?= empty($manifest['signature'])
+                ? "<span class='badge badge-warning'>NON SIGNÉ</span>"
+                : "<span class='badge badge-success'>SIGNÉ Ed25519</span>" ?>
+        </p>
+        <p class="muted">URL attendue de l'exe : <code><?= htmlspecialchars($launcher['download']['url']) ?></code></p>
+    <?php else: ?>
+        <p class="muted">Aucune version du launcher déclarée — l'auto-update est désactivé. Configure-la ci-dessous pour l'activer.</p>
+    <?php endif; ?>
+</div>
+
+<div class="card">
+    <h2>Workflow d'une nouvelle version du launcher</h2>
+    <ol class="muted">
+        <li>Remplis le formulaire <strong>Définir / mettre à jour</strong> ci-dessous (ex : <code>0.6.0</code>).</li>
+        <li>Sur ton poste : <code>dotnet publish src\PSLauncher.App -c Release</code> et <code>dotnet publish src\PSLauncher.Updater -c Release</code> (les exes sont copiés à la racine du repo).</li>
+        <li>Renomme la copie : <code>PSLauncher.exe → PSLauncher-X.Y.Z.exe</code>.</li>
+        <li>Upload via SFTP dans <code>www/PS_Launcher/builds/launcher/</code>.</li>
+        <li>Clique <strong>🔁 Hasher le launcher + signer</strong>.</li>
+        <li>Les launchers déjà déployés détecteront la nouvelle version au prochain « Vérifier les MAJ ».</li>
+    </ol>
+</div>
+
+<div class="card">
+    <h2>Définir / mettre à jour</h2>
+    <form method="post">
+        <?= Layout::csrfField() ?>
+        <input type="hidden" name="action" value="set_launcher">
+        <div class="row">
+            <div class="col field">
+                <label>Version launcher (X.Y.Z)</label>
+                <input type="text" name="launcher_version" placeholder="0.6.0"
+                       value="<?= htmlspecialchars($launcher['version'] ?? '') ?>" required pattern="\d+\.\d+\.\d+">
+            </div>
+            <div class="col field">
+                <label>Version minimale requise (X.Y.Z)</label>
+                <input type="text" name="launcher_min_required" placeholder="0.5.0"
+                       value="<?= htmlspecialchars($launcher['minRequired'] ?? '0.5.0') ?>" pattern="\d+\.\d+\.\d+">
+            </div>
+        </div>
+        <button class="btn btn-success" type="submit">Définir</button>
+    </form>
+
+    <form method="post" style="margin-top: 16px;">
+        <?= Layout::csrfField() ?>
+        <input type="hidden" name="action" value="sync_launcher">
+        <button class="btn btn-primary" type="submit">🔁 Hasher le launcher + signer</button>
+    </form>
+
+    <?php if ($launcher): ?>
+    <form method="post" style="margin-top: 16px;"
+          onsubmit="return confirm('Retirer la section launcher du manifest ? L\'auto-update sera désactivé.')">
+        <?= Layout::csrfField() ?>
+        <input type="hidden" name="action" value="remove_launcher">
+        <button class="btn btn-danger" type="submit">Retirer la section launcher</button>
+    </form>
+    <?php endif; ?>
+</div>
+
+<div class="card">
+    <h2>Exes présents dans builds/launcher/</h2>
+    <?php if (empty($launcherFiles)): ?>
+        <p class="muted">Aucun exe pour l'instant. Upload les binaires via SFTP dans <code>www/PS_Launcher/builds/launcher/</code>.</p>
+    <?php else: ?>
+        <table>
+            <thead><tr><th>Fichier</th><th>Taille</th></tr></thead>
+            <tbody>
+            <?php foreach ($launcherFiles as $f): ?>
+                <tr>
+                    <td><code><?= htmlspecialchars($f) ?></code></td>
+                    <td class="muted"><?= Layout::formatBytes(filesize("$buildsDir/launcher/$f")) ?></td>
+                </tr>
+            <?php endforeach; ?>
+            </tbody>
+        </table>
+    <?php endif; ?>
+</div>
+<?php Layout::footer();
diff --git a/server/admin/lib/Layout.php b/server/admin/lib/Layout.php
index 6ae81c9..c837e3d 100644
--- a/server/admin/lib/Layout.php
+++ b/server/admin/lib/Layout.php
@@ -38,6 +38,7 @@ HTML;
             'dashboard' => ['index.php',    'Dashboard'],
             'licenses'  => ['licenses.php', 'Licenses'],
             'versions'  => ['versions.php', 'Versions'],
+            'launcher'  => ['launcher.php', 'Launcher'],
             'audit'     => ['audit.php',    'Audit'],
         ];
         $links = '';
diff --git a/server/admin/versions.php b/server/admin/versions.php
index bf44fed..af3e3b0 100644
--- a/server/admin/versions.php
+++ b/server/admin/versions.php
@@ -132,41 +132,13 @@ if ($_SERVER['REQUEST_METHOD'] === 'POST') {
             saveManifest($manifestPath, $manifest);
             $message = "v{$version} retirée du manifest. Le ZIP reste dans builds/ (à supprimer en SFTP si voulu).";
         }
-        elseif ($action === 'set_launcher') {
-            $lver  = trim($_POST['launcher_version'] ?? '');
-            $lmin  = trim($_POST['launcher_min_required'] ?? '');
-            if (!preg_match('/^\d+\.\d+\.\d+$/', $lver)) {
-                throw new Exception('Numéro de version launcher invalide (X.Y.Z attendu).');
-            }
-            if ($lmin !== '' && !preg_match('/^\d+\.\d+\.\d+$/', $lmin)) {
-                throw new Exception('Numéro de version "minRequired" invalide.');
-            }
-            $base = $config['base_url'] ?? 'https://asterionvr.com/PS_Launcher';
-            $manifest['launcher'] = [
-                'version'         => $lver,
-                'minRequired'     => $lmin !== '' ? $lmin : '0.5.0',
-                'download'        => [
-                    'url'       => "{$base}/builds/launcher/PSLauncher-{$lver}.exe",
-                    'sizeBytes' => 0,
-                    'sha256'    => 'REPLACE_AFTER_BUILD',
-                ],
-                'releaseNotesUrl' => null,
-            ];
-            saveManifest($manifestPath, $manifest);
-            $message = "Section launcher mise à jour (v{$lver}). Upload PSLauncher-{$lver}.exe dans builds/launcher/ puis clique « Sync ».";
-        }
-        elseif ($action === 'remove_launcher') {
-            unset($manifest['launcher']);
-            saveManifest($manifestPath, $manifest);
-            $message = "Section launcher retirée du manifest (auto-update désactivé).";
-        }
-        elseif ($action === 'sync') {
-            // Appel direct à la classe — pas d'exec(), fonctionne même quand la fonction
-            // est désactivée par le mutualisé OVH.
+        elseif ($action === 'sync' || $action === 'sync_versions') {
             require_once "$root/tools/SignManifest.php";
             $signer = new \PSLauncher\Tools\SignManifest($root);
-            $result = $signer->run();
-            $message = "Sortie du script :\n" . implode("\n", $result['log']);
+            $scope = $action === 'sync_versions' ? 'versions' : 'all';
+            $result = $signer->run($scope);
+            $label = $scope === 'versions' ? 'versions Proserve' : 'manifest complet';
+            $message = "Sortie du script (scope: {$label}) :\n" . implode("\n", $result['log']);
             if (!$result['ok']) $messageType = 'error';
         }
     } catch (Exception $e) {
@@ -233,81 +205,6 @@ Layout::header('Versions', 'versions');
     </form>
 </div>
 
-<!-- Card LAUNCHER (auto-update du PSLauncher.exe lui-même) -->
-<div class="card">
-    <h2>Auto-update du launcher</h2>
-    <?php
-    $launcher = $manifest['launcher'] ?? null;
-    $launcherFiles = is_dir("$buildsDir/launcher") ? array_map('basename', glob("$buildsDir/launcher/*.exe") ?: []) : [];
-    $launcherZipPresent = false;
-    $launcherHashed = false;
-    if ($launcher) {
-        $expectedFile = basename(parse_url($launcher['download']['url'] ?? '', PHP_URL_PATH) ?? '');
-        $launcherZipPresent = in_array($expectedFile, $launcherFiles, true);
-        $launcherHashed = !empty($launcher['download']['sha256']) && !str_starts_with($launcher['download']['sha256'], 'REPLACE');
-    }
-    ?>
-    <?php if ($launcher): ?>
-        <p>
-            Version annoncée : <strong>v<?= htmlspecialchars($launcher['version']) ?></strong>
-            • minRequired : <code><?= htmlspecialchars($launcher['minRequired'] ?? '—') ?></code>
-            • Exe : <?= $launcherZipPresent
-                ? "<span class='badge badge-success'>présent</span>"
-                : "<span class='badge badge-warning'>absent</span>" ?>
-            • Hash : <?= $launcherHashed
-                ? "<span class='badge badge-success'>OK</span>"
-                : "<span class='badge badge-warning'>à calculer</span>" ?>
-        </p>
-        <p class="muted">URL attendue de l'exe : <code><?= htmlspecialchars($launcher['download']['url']) ?></code></p>
-    <?php else: ?>
-        <p class="muted">Section launcher absente du manifest — l'auto-update est désactivé. Configure-la ci-dessous pour l'activer.</p>
-    <?php endif; ?>
-
-    <h3 style="margin-top: 18px; font-size: 13px; color: var(--text-secondary); text-transform: uppercase;">Définir / mettre à jour</h3>
-    <form method="post">
-        <?= Layout::csrfField() ?>
-        <input type="hidden" name="action" value="set_launcher">
-        <div class="row">
-            <div class="col field">
-                <label>Version launcher (X.Y.Z)</label>
-                <input type="text" name="launcher_version" placeholder="0.6.0"
-                       value="<?= htmlspecialchars($launcher['version'] ?? '') ?>" required pattern="\d+\.\d+\.\d+">
-            </div>
-            <div class="col field">
-                <label>Version minimale requise (X.Y.Z)</label>
-                <input type="text" name="launcher_min_required" placeholder="0.5.0"
-                       value="<?= htmlspecialchars($launcher['minRequired'] ?? '0.5.0') ?>" pattern="\d+\.\d+\.\d+">
-            </div>
-        </div>
-        <button class="btn btn-success" type="submit">Définir</button>
-    </form>
-
-    <?php if ($launcher): ?>
-    <form method="post" style="margin-top: 12px;"
-          onsubmit="return confirm('Retirer la section launcher du manifest ? L\'auto-update sera désactivé.')">
-        <?= Layout::csrfField() ?>
-        <input type="hidden" name="action" value="remove_launcher">
-        <button class="btn btn-danger" type="submit">Retirer la section launcher</button>
-    </form>
-    <?php endif; ?>
-
-    <h3 style="margin-top: 18px; font-size: 13px; color: var(--text-secondary); text-transform: uppercase;">Workflow</h3>
-    <ol class="muted">
-        <li>Définis la version ci-dessus (ex : <code>0.6.0</code>).</li>
-        <li>Upload <code>PSLauncher-X.Y.Z.exe</code> via SFTP dans <code>www/PS_Launcher/builds/launcher/</code>.</li>
-        <li>Clique <strong>🔁 Sync (sign-manifest)</strong> dans le tableau du manifest ci-dessous — il hashera la section launcher en plus des versions Proserve.</li>
-    </ol>
-
-    <?php if (!empty($launcherFiles)): ?>
-    <h3 style="margin-top: 18px; font-size: 13px; color: var(--text-secondary); text-transform: uppercase;">Exes présents dans builds/launcher/</h3>
-    <ul class="muted">
-        <?php foreach ($launcherFiles as $f): ?>
-            <li><code><?= htmlspecialchars($f) ?></code> — <?= Layout::formatBytes(filesize("$buildsDir/launcher/$f")) ?></li>
-        <?php endforeach; ?>
-    </ul>
-    <?php endif; ?>
-</div>
-
 <div class="card">
     <div class="toolbar">
         <h2 style="margin: 0; flex: 1;">Manifest actuel</h2>
@@ -322,8 +219,8 @@ Layout::header('Versions', 'versions');
         </span>
         <form method="post" style="display:inline">
             <?= Layout::csrfField() ?>
-            <input type="hidden" name="action" value="sync">
-            <button class="btn btn-primary" type="submit">🔁 Sync (sign-manifest)</button>
+            <input type="hidden" name="action" value="sync_versions">
+            <button class="btn btn-primary" type="submit">🔁 Hasher les versions + signer</button>
         </form>
     </div>
 
diff --git a/server/tools/SignManifest.php b/server/tools/SignManifest.php
index ba88726..2bb7e92 100644
--- a/server/tools/SignManifest.php
+++ b/server/tools/SignManifest.php
@@ -26,13 +26,12 @@ final class SignManifest
     private function out(string $line): void { $this->log[] = $line; }
 
     /**
-     * Recompute sizes / sha256 for every version that has its ZIP uploaded,
-     * bump 'latest' to the highest signed version, then sign the manifest
-     * with the Ed25519 private key from config.php (if available).
+     * Recompute sizes / sha256 selon le scope, puis re-signe le manifest avec Ed25519.
      *
+     * @param string $scope 'all' (défaut) | 'versions' (ne touche que les Proserve) | 'launcher'
      * @return array{ok:bool, log:string[]}
      */
-    public function run(): array
+    public function run(string $scope = 'all'): array
     {
         if (!is_file($this->manifestPath)) {
             $this->out("Manifest introuvable : {$this->manifestPath}");
@@ -45,8 +44,11 @@ final class SignManifest
             return ['ok' => false, 'log' => $this->log];
         }
 
+        $doVersions = ($scope === 'all' || $scope === 'versions');
+        $doLauncher = ($scope === 'all' || $scope === 'launcher');
+
         $hashedVersions = [];
-        foreach ($manifest['versions'] as &$v) {
+        if ($doVersions) foreach ($manifest['versions'] as &$v) {
             $version = $v['version'] ?? '?';
             $url     = $v['download']['url'] ?? '';
             if ($url === '') {
@@ -84,7 +86,7 @@ final class SignManifest
 
         // Section launcher : si présente, on tente de hasher le PSLauncher-{ver}.exe
         // dans builds/launcher/. On ignore proprement si l'exe n'est pas là.
-        if (isset($manifest['launcher']) && is_array($manifest['launcher'])) {
+        if ($doLauncher && isset($manifest['launcher']) && is_array($manifest['launcher'])) {
             $launcher = &$manifest['launcher'];
             $lver = $launcher['version'] ?? '';
             $lurl = $launcher['download']['url'] ?? '';
@@ -110,7 +112,8 @@ final class SignManifest
         }
 
         // Bump auto de `latest` sur la plus haute version effectivement uploadée
-        if (!empty($hashedVersions)) {
+        // (uniquement si on a touché aux versions)
+        if ($doVersions && !empty($hashedVersions)) {
             usort($hashedVersions, 'version_compare');
             $newLatest = end($hashedVersions);
             if (($manifest['latest'] ?? null) !== $newLatest) {