Istanza unica (lock), avvio automatico tramite LuZa.app, elenco dispositivi audio immediato su macOS, riuso delle porte del server remoto

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

avatar/remote.py

@@ -175,11 +175,11 @@ class RemoteServer:
         runner = web.AppRunner(app)
         self._loop.run_until_complete(runner.setup())
         try:
-            self._loop.run_until_complete(web.TCPSite(runner, "0.0.0.0", HTTPS_PORT, ssl_context=ctx).start())
+            self._loop.run_until_complete(web.TCPSite(runner, "0.0.0.0", HTTPS_PORT, ssl_context=ctx, reuse_address=True).start())
-            self._loop.run_until_complete(web.TCPSite(runner, "0.0.0.0", HTTP_PORT).start())   # solo CA e reindirizzo
+            self._loop.run_until_complete(web.TCPSite(runner, "0.0.0.0", HTTP_PORT, reuse_address=True).start())   # solo CA e reindirizzo
         except Exception as err:
             self.error = str(err)
-            self.log(f"ERR: Accesso remoto — porta occupata? {err}")
+            self.log(f"ERR: Accesso remoto non avviato: porta {HTTPS_PORT} occupata (c'è un'altra LuZa aperta?). {err}")
             return
         self.log(f"SYS: Accesso remoto pronto su https://{self.ip}:{HTTPS_PORT} (CA: http://{self.ip}:{HTTP_PORT}/ca.crt)")
         try:

core/audio_devices.py

@@ -271,6 +271,9 @@ def _query() -> dict[str, list[str]]:
             apis = []
 
         preferred = _PREFERRED_APIS.get(platform.system(), ())
+        # Su macOS Core Audio non mente: aprire un flusso di prova su ogni dispositivo (Bluetooth, AirPlay, schermi)
+        # costa secondi ciascuno e blocca l'interfaccia. Le prove servono solo per le API fasulle di Windows/Linux.
+        fast = platform.system() == "Darwin"
 
         def _collect(api_filter, kind) -> list[tuple[int, str]]:
             """(index, name) for named, non-pseudo devices on one side that can
@@ -287,7 +290,7 @@ def _query() -> dict[str, list[str]]:
                     api = apis[dev["hostapi"]].lower() if dev.get("hostapi", -1) < len(apis) else ""
                     if api_filter not in api:
                         continue
-                if not _usable(idx, kind):
+                if not fast and not _usable(idx, kind):
                     continue
                 seen.add(name)
                 found.append((idx, name))
@@ -303,7 +306,7 @@ def _query() -> dict[str, list[str]]:
                 if not found:
                     continue
                 # One probe per API per direction, cached, on this thread.
-                if not _transport_works(found[0][0], kind, (api_filter, kind)):
+                if not fast and not _transport_works(found[0][0], kind, (api_filter, kind)):
                     continue
                 _chosen_api[kind] = api_filter
                 out[kind] = [_display_name(n, devices) for _i, n in found]

main.py

@@ -33,7 +33,30 @@ def ensure_identity_file() -> None:
         f.write_text(json.dumps(data, indent=4, ensure_ascii=False), encoding="utf-8")
 
 
+def _single_instance() -> bool:
+    """Blocco esclusivo su data/luza.lock: una seconda LuZa (avvio automatico + avvio manuale) esce subito."""
+    import fcntl
+    from avatar.settings import DATA_DIR
+    DATA_DIR.mkdir(parents=True, exist_ok=True)
+    global _lock_file
+    _lock_file = open(DATA_DIR / "luza.lock", "w")
+    try:
+        fcntl.flock(_lock_file, fcntl.LOCK_EX | fcntl.LOCK_NB)
+        _lock_file.write(str(__import__("os").getpid())); _lock_file.flush()
+        return True
+    except OSError:
+        return False
+
+
 def main() -> None:
+    if "--smoke" not in sys.argv and not _single_instance():
+        print("LuZa è già in esecuzione: questa seconda istanza si chiude.")
+        try:
+            import subprocess
+            subprocess.run(["osascript", "-e", 'display notification "LuZa è già aperta." with title "LuZa"'], timeout=5)
+        except Exception:
+            pass
+        return
     ensure_identity_file()
     settings = Settings()
     try:
@@ -57,6 +80,11 @@ def main() -> None:
     ui.on_wake_toggle = assistant.on_wake_toggle
     ui.on_wake_manual = assistant.on_wake_manual
     ui.wake_get_state = assistant.wake_get_state
+    try:
+        from core import audio_devices
+        audio_devices.prefetch()   # elenco dispositivi audio pronto prima che si apra la finestra
+    except Exception:
+        pass
     from avatar.plugins import registry
     from core import confirm
     confirm.bind(ui.show_confirm, ui.hide_confirm, ui.write_log)

ui.py

@@ -4691,8 +4691,9 @@ class MainWindow(QMainWindow):
                         '<plist version="1.0"><dict>\n'
                         '  <key>Label</key><string>it.luza.assistente</string>\n'
                         '  <key>ProgramArguments</key><array>\n'
-                        f'    <string>{sys.executable}</string>\n'
+                        + ('    <string>/usr/bin/open</string>\n    <string>-a</string>\n    <string>/Applications/LuZa.app</string>\n'
-                        f'    <string>{script}</string>\n'
+                           if Path("/Applications/LuZa.app").exists() else
+                           f'    <string>{sys.executable}</string>\n    <string>{script}</string>\n') +
                         '  </array>\n'
                         '  <key>RunAtLoad</key><true/>\n'
                         '</dict></plist>\n'