Add offline mode feature

src/password_manager/config_manager.py

@@ -41,6 +41,7 @@ class ConfigManager:
             logger.info("Config file not found; returning defaults")
             return {
                 "relays": list(DEFAULT_NOSTR_RELAYS),
+                "offline_mode": False,
                 "pin_hash": "",
                 "password_hash": "",
                 "inactivity_timeout": INACTIVITY_TIMEOUT,
@@ -61,6 +62,7 @@ class ConfigManager:
                 raise ValueError("Config data must be a dictionary")
             # Ensure defaults for missing keys
             data.setdefault("relays", list(DEFAULT_NOSTR_RELAYS))
+            data.setdefault("offline_mode", False)
             data.setdefault("pin_hash", "")
             data.setdefault("password_hash", "")
             data.setdefault("inactivity_timeout", INACTIVITY_TIMEOUT)
@@ -196,11 +198,22 @@ class ConfigManager:
         config["secret_mode_enabled"] = bool(enabled)
         self.save_config(config)
 
+    def set_offline_mode(self, enabled: bool) -> None:
+        """Persist the offline mode toggle."""
+        config = self.load_config(require_pin=False)
+        config["offline_mode"] = bool(enabled)
+        self.save_config(config)
+
     def get_secret_mode_enabled(self) -> bool:
         """Retrieve whether secret mode is enabled."""
         config = self.load_config(require_pin=False)
         return bool(config.get("secret_mode_enabled", False))
 
+    def get_offline_mode(self) -> bool:
+        """Retrieve the offline mode setting."""
+        config = self.load_config(require_pin=False)
+        return bool(config.get("offline_mode", False))
+
     def set_clipboard_clear_delay(self, delay: int) -> None:
         """Persist clipboard clear timeout in seconds."""
         if delay <= 0:

src/password_manager/manager.py

@@ -135,6 +135,7 @@ class PasswordManager:
         self.inactivity_timeout: float = INACTIVITY_TIMEOUT
         self.secret_mode_enabled: bool = False
         self.clipboard_clear_delay: int = 45
+        self.offline_mode: bool = False
         self.profile_stack: list[tuple[str, Path, str]] = []
         self.last_unlock_duration: float | None = None
 
@@ -982,17 +983,19 @@ class PasswordManager:
             # Load relay configuration and initialize NostrClient
             config = self.config_manager.load_config()
             relay_list = config.get("relays", list(DEFAULT_RELAYS))
+            self.offline_mode = bool(config.get("offline_mode", False))
             self.inactivity_timeout = config.get(
                 "inactivity_timeout", INACTIVITY_TIMEOUT
             )
             self.secret_mode_enabled = bool(config.get("secret_mode_enabled", False))
             self.clipboard_clear_delay = int(config.get("clipboard_clear_delay", 45))
-
-            print("Connecting to relays...")
+            if not self.offline_mode:
+                print("Connecting to relays...")
             self.nostr_client = NostrClient(
                 encryption_manager=self.encryption_manager,
                 fingerprint=self.current_fingerprint,
                 relays=relay_list,
+                offline_mode=self.offline_mode,
                 parent_seed=getattr(self, "parent_seed", None),
             )
 
@@ -1028,6 +1031,8 @@ class PasswordManager:
 
     def start_background_sync(self) -> None:
         """Launch a thread to synchronize the vault without blocking the UI."""
+        if getattr(self, "offline_mode", False):
+            return
         if (
             hasattr(self, "_sync_thread")
             and self._sync_thread
@@ -3312,6 +3317,8 @@ class PasswordManager:
     def sync_vault(self, alt_summary: str | None = None) -> str | None:
         """Publish the current vault contents to Nostr."""
         try:
+            if getattr(self, "offline_mode", False):
+                return None
             encrypted = self.get_encrypted_data()
             if not encrypted:
                 return None