App, cmds, lib: Fix Any returns from typed functions

Add type annotations and casts to functions that were returning Any
where a specific type was declared, satisfying the new warn_return_any
mypy rule.

Fixes:
- log.py: get_caller_pos return type via cast
- AsyncRunner.py: cast T for fut.result()
- util.py: cast for getattr result, str() for args.username
- FileContext.py: verbose_default bool annotation
- SSHClient.py: cast SSHClient for dynamic import
- lib/App.py: cast ArgumentParser, add return types to inner funcs
- pm/rpm.py, dpkg.py: cast Iterable[Package]
- App.py: cast for self.args.func(), add return types to inner funcs
- BaseCmdPkgRelations.py: cast str for args.delimiter

Assisted-by: unsloth/Qwen3.6-35B-A3B-GGUF:IQ4_NL and pi.dev 0.81.1
Signed-off-by: Jan Lindemann <jan@janware.com>

src/python/jw/pkg/cmds/posix/CmdTar.py

@@ -5,7 +5,7 @@ from typing import TYPE_CHECKING, override
 from .Cmd import Cmd, Parent
 
 if TYPE_CHECKING:
-    from argparse import ArgumentParser
+    from argparse import ArgumentParser, Namespace
 
 class CmdTar(Cmd):  # export
 
@@ -14,7 +14,7 @@ class CmdTar(Cmd):  # export
         self.load_subcommands()
 
     @override
-    async def _run(self, args):
+    async def _run(self, args: Namespace) -> None:
         import sys
 
         # Missing subcommand

src/python/jw/pkg/cmds/posix/tar/Cmd.py

@@ -1,7 +1,7 @@
 from __future__ import annotations
 
 from contextlib import asynccontextmanager
-from typing import override, TYPE_CHECKING
+from typing import Any, override, TYPE_CHECKING
 
 from ....CmdBase import CmdBase as Base
 from ....lib.FileContext import FileContext
@@ -20,7 +20,7 @@ class Cmd(Base):  # export
         self.__tar_io: None = None
 
     @asynccontextmanager
-    async def ctx(self, **kwargs) -> AsyncIterator[TarIo]:
+    async def ctx(self, **kwargs: Any) -> AsyncIterator[TarIo]:
         async with TarIo.create(src = self.app.args.archive_path, **kwargs) as ret:
             ret.src.add_proc_filter(
                 FileContext.Direction.In, ProcFilterGpg(ec = self.app.exec_context)