Fix formatting, linting, and logic errors from codebase scan

- Apply black formatting to 17 files.
- Fix F821 undefined name errors in:
  - src/main.py: Add missing `queue` import.
  - src/seedpass/core/encryption.py: Fix `JSONDecodeError` reference.
  - src/utils/__init__.py: Fix exception variable scope in fallback code.
  - src/utils/key_derivation.py: Add `TYPE_CHECKING` imports.
  - src/seedpass/core/config_manager.py: Add `TYPE_CHECKING` imports.
- Initialize torch environment and TODO file.

Co-authored-by: PR0M3TH3AN <[email protected]>

src/utils/__init__.py

@@ -40,14 +40,15 @@ from .atomic_write import atomic_write
 try:  # pragma: no cover - exercised when dependency missing
     from .clipboard import ClipboardUnavailableError, copy_to_clipboard
 except Exception as exc:  # pragma: no cover - executed only if pyperclip missing
+    _error_msg = str(exc)
 
     class ClipboardUnavailableError(RuntimeError):
         """Stub exception when clipboard support is unavailable."""
 
     def copy_to_clipboard(*_args, **_kwargs):
         """Stub when clipboard support is unavailable."""
-        logger.warning("Clipboard support unavailable: %s", exc)
-        raise ClipboardUnavailableError(str(exc))
+        logger.warning("Clipboard support unavailable: %s", _error_msg)
+        raise ClipboardUnavailableError(_error_msg)
 
 
 __all__ = [

src/utils/color_scheme.py

@@ -2,7 +2,6 @@
 
 from termcolor import colored
 
-
 # ANSI escape for 256-color orange (color code 208)
 _ORANGE = "\033[38;5;208m"
 _RESET = "\033[0m"

src/utils/key_derivation.py

@@ -21,7 +21,7 @@ import hmac
 import time
 from dataclasses import dataclass, field
 from enum import Enum
-from typing import Optional, Union, Dict, Any
+from typing import Optional, Union, Dict, Any, TYPE_CHECKING
 
 from bip_utils import Bip39SeedGenerator
 from local_bip85 import BIP85
@@ -46,6 +46,9 @@ DEFAULT_ENCRYPTION_MODE = EncryptionMode.SEED_ONLY
 # Purpose constant for TOTP secret derivation using BIP85
 TOTP_PURPOSE = 39
 
+if TYPE_CHECKING:
+    from seedpass.core.config_manager import ConfigManager
+
 
 @dataclass
 class KdfConfig:

src/utils/seed_prompt.py

@@ -17,7 +17,6 @@ except ImportError:  # pragma: no cover - POSIX only
 from utils.terminal_utils import clear_screen
 from utils.logging_utils import pause_console_logging, resume_console_logging
 
-
 DEFAULT_MAX_ATTEMPTS = 5