Add fully functional standalone CLI (no Calibre required)

.gitignore

@@ -6,4 +6,19 @@
 
 # Cache
 /DeDRM_plugin/__pycache__
-/DeDRM_plugin/standalone/__pycache__
+/DeDRM_plugin/standalone/__pycache__
+**/__pycache__
+
+# Generated build artifacts — never committed, rebuilt on demand by dedrm.py
+DeDRM_plugin.zip
+DeDRM_tools.zip
+DeDRM_plugin_build_tmp/
+
+# User key config written by standalone CLI on first successful decryption
+dedrm.json
+
+# AI agent working files
+.claude/
+
+# Generated HTML from markdown plan docs
+*.html

DeDRM_plugin/__calibre_compat_code.py

@@ -17,5 +17,58 @@
 if "calibre" in sys.modules:
     # Explicitly set the package identifier so we are allowed to import stuff ...
     __package__ = "calibre_plugins.dedrm"
+else:
+    # Standalone mode: make relative imports (from .utilities import ...) work
+    # without Calibre by installing a meta_path hook that maps dedrm.X -> X.
+    import types as _types
+
+    _dedrm_pkg_name = "dedrm"
+
+    class _DeDRMFinder:
+        """Acts as both finder and loader.
+        Intercepts 'import dedrm.X' and redirects it to the flat module 'X',
+        so that relative imports (from .utilities import ...) work standalone."""
+
+        def find_spec(self, fullname, path, target=None):
+            import importlib.util as _ilu
+            if fullname == _dedrm_pkg_name or fullname.startswith(_dedrm_pkg_name + "."):
+                return _ilu.spec_from_loader(fullname, loader=self,
+                                             is_package=(fullname == _dedrm_pkg_name))
+            return None
+
+        def create_module(self, spec):
+            if spec.name == _dedrm_pkg_name:
+                return sys.modules[_dedrm_pkg_name]
+            # For dedrm.X: import X as a top-level module first, then reuse it
+            subname = spec.name[len(_dedrm_pkg_name) + 1:]
+            if subname not in sys.modules:
+                import importlib as _il
+                _il.import_module(subname)
+            # Return a fresh module; exec_module will copy attrs from top-level
+            import types as _t
+            return _t.ModuleType(spec.name)
+
+        def exec_module(self, module):
+            if module.__name__ == _dedrm_pkg_name:
+                return  # stub package — nothing to execute
+            subname = module.__name__[len(_dedrm_pkg_name) + 1:]
+            if subname in sys.modules:
+                _skip = {'__name__', '__spec__', '__loader__',
+                         '__package__', '__file__', '__cached__', '__builtins__'}
+                for _k, _v in sys.modules[subname].__dict__.items():
+                    if _k not in _skip:
+                        module.__dict__[_k] = _v
+
+    if _dedrm_pkg_name not in sys.modules:
+        _dedrm_pkg = _types.ModuleType(_dedrm_pkg_name)
+        _dedrm_pkg.__path__ = []
+        _dedrm_pkg.__package__ = _dedrm_pkg_name
+        _dedrm_pkg.__spec__ = None
+        sys.modules[_dedrm_pkg_name] = _dedrm_pkg
+
+    if not any(type(f).__name__ == "_DeDRMFinder" for f in sys.meta_path):
+        sys.meta_path.append(_DeDRMFinder())
+
+    __package__ = _dedrm_pkg_name
 
 #@@CALIBRE_COMPAT_CODE_END@@

DeDRM_plugin/prefs.py

@@ -17,7 +17,13 @@
 except:
     from standalone.jsonconfig import JSONConfig
 
-from __init__ import PLUGIN_NAME
+try:
+    from __version__ import PLUGIN_NAME
+except ImportError:
+    try:
+        from __init__ import PLUGIN_NAME  # type: ignore
+    except ImportError:
+        PLUGIN_NAME = "DeDRM"  # standalone fallback
 
 class DeDRM_Prefs():
     def __init__(self, json_path=None):

DeDRM_plugin/standalone/__init__.py

@@ -178,10 +178,10 @@ def execute_action(action, filenames, params):
 
     elif action == "remove_drm":
         if not os.path.isfile(os.path.abspath(config_file_path)):
-            print("Config file missing ...")
-        
+            print("Config file not found — will use defaults and auto-discover keys.")
+
         from standalone.remove_drm import perform_action
-        perform_action(params, filenames)
+        sys.exit(perform_action(params, filenames))
 
     elif action == "config":
         import prefs