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/lib/util.py

@@ -5,7 +5,7 @@ import os
 import sys
 
 from enum import Enum, auto
-from typing import TYPE_CHECKING, Iterable, TypeVar
+from typing import TYPE_CHECKING, Any, Iterable, TypeVar, cast
 
 from .base import Input, InputMode, Result
 from .log import DEBUG, ERR, log
@@ -23,7 +23,7 @@ class AskpassKey(Enum):
     Username = auto()
     Password = auto()
 
-def pretty_cmd(cmd: list[str] | None = None, wd = None):
+def pretty_cmd(cmd: list[str] | None = None, wd: str | None = None) -> str:
     if cmd is None:
         cmd = sys.argv
     tokens = [cmd[0]]
@@ -38,11 +38,11 @@ def pretty_cmd(cmd: list[str] | None = None, wd = None):
 
 # See ExecContext.run() for what this function does
 async def run_cmd(
-    *args,
+    *args: Any,
     ec: ExecContext | None = None,
     verbose: bool | None = None,
     cmd_input: Input = InputMode.NonInteractive,
-    **kwargs,
+    **kwargs: Any,
 ) -> Result:
     if verbose is None:
         verbose = False if ec is None else ec.verbose_default
@@ -56,12 +56,12 @@ async def run_cmd(
 
 async def run_curl(
     args: list[str],
-    wd = None,
-    throw = None,
-    verbose = None,
-    cmd_input = InputMode.NonInteractive,
+    wd: str | None = None,
+    throw: bool | None = None,
+    verbose: bool | None = None,
+    cmd_input: Input = InputMode.NonInteractive,
     ec: ExecContext | None = None,
-    decode = False,
+    decode: bool = False,
 ) -> Result:
     if verbose is None:
         verbose = False if ec is None else ec.verbose_default
@@ -76,7 +76,7 @@ async def run_curl(
 async def run_curl_into(
     expected_type: type[T],
     args: list[str],
-    **kwargs,
+    **kwargs: Any,
 ) -> T:
     result = await run_curl(args, **kwargs)
     stdout = result.stdout_str
@@ -139,11 +139,11 @@ async def run_askpass(
 
 async def run_sudo(
     cmd: list[str],
-    *args,
+    *args: Any,
     interactive: bool = True,
     ec: ExecContext | None = None,
-    **kwargs,
-):
+    **kwargs: Any,
+) -> Result:
     if ec is None:
         from .ec.Local import Local
 
@@ -152,10 +152,10 @@ async def run_sudo(
 
 async def get(
     uri: str | Uri,
-    *args,
+    *args: Any,
     ctx: FileContext | None = None,
     content_filter: ProcFilter | list[ProcFilter] | ProcPipeline | None = None,
-    **kwargs,
+    **kwargs: Any,
 ) -> Result:
     uri = Uri.pimp(uri)
     if ctx is None or uri.id != ctx.uri.id:
@@ -172,7 +172,7 @@ async def copy(
     owner: str | None = None,
     group: str | None = None,
     mode: int | None = None,
-    throw = True,
+    throw: bool = True,
 ) -> Exception | str | list[str]:
     if not isinstance(src_uri, str):
         ret: list[str] = []
@@ -225,7 +225,7 @@ async def get_username(  # export
                     f'Username mismatch: called with --username="{args.username}", '
                     f'URL has user name "{url_user}"'
                 )
-            return args.username
+            return str(args.username)
     if url_user is not None:
         return url_user
     return await run_askpass(askpass_env, AskpassKey.Username, ec = ec)
@@ -244,7 +244,7 @@ async def get_password(  # export
     if args is not None and hasattr(args, 'password'):
         # use getattr(), because we don't necessarily want to have insecure
         # --password among options
-        ret = getattr(args, 'password')
+        ret = cast('str | None', getattr(args, 'password'))
         if ret is not None:
             return ret
     if url is not None: