do not create application in shell handler

The main reason for having shell handler is to be able to fix if
something (e.g. migrations) goes wrong. In this way we need to reduce
actions inside this wrapper

src/ahriman/application/ahriman.py

@@ -904,8 +904,7 @@ def _set_service_shell_parser(root: SubParserAction) -> argparse.ArgumentParser:
         argparse.ArgumentParser: created argument parser
     """
     parser = root.add_parser("service-shell", aliases=["shell"], help="invoke python shell",
-                             description="drop into python shell while having created application",
-                             formatter_class=_formatter)
+                             description="drop into python shell", formatter_class=_formatter)
     parser.add_argument("code", help="instead of dropping into shell, just execute the specified code", nargs="?")
     parser.add_argument("-v", "--verbose", help=argparse.SUPPRESS, action="store_true")
     parser.set_defaults(handler=handlers.Shell, lock=None, report=False)

src/ahriman/application/handlers/shell.py

@@ -23,7 +23,6 @@ import sys
 
 from pathlib import Path
 
-from ahriman.application.application import Application
 from ahriman.application.handlers import Handler
 from ahriman.core.configuration import Configuration
 from ahriman.core.formatters import StringPrinter
@@ -47,14 +46,12 @@ class Shell(Handler):
             configuration(Configuration): configuration instance
             report(bool): force enable or disable reporting
         """
-        # pylint: disable=possibly-unused-variable
-        application = Application(architecture, configuration, report=report)
         if args.verbose:
             # licensed by https://creativecommons.org/licenses/by-sa/3.0
             path = Path(sys.prefix) / "share" / "ahriman" / "templates" / "shell"
             StringPrinter(path.read_text(encoding="utf8")).print(verbose=False)
-        # we only want to pass application instance inside
+        local_variables = {"architecture": architecture, "configuration": configuration}
         if args.code is None:
-            code.interact(local={"application": application})
+            code.interact(local=local_variables)
         else:
-            code.InteractiveConsole(locals={"application": application}).runcode(args.code)
+            code.InteractiveConsole(locals=local_variables).runcode(args.code)