feat: add some funcs

src/main/paths.ts

@@ -41,6 +41,16 @@ class LauncherPaths {
     return join(this.root, 'settings.json')
   }
 
+  /** Dossier des logs du launcher (install/Java/packwiz/jeu). */
+  get logsDir(): string {
+    return this.ensure(join(this.root, 'logs'))
+  }
+
+  /** Fichier de log courant du launcher. */
+  get launcherLogFile(): string {
+    return join(this.logsDir, 'launcher.log')
+  }
+
   /** jar packwiz-installer-bootstrap embarqué dans les resources. */
   get packwizBootstrapJar(): string {
     // En prod, electron-builder copie resources/ via extraResources.