core/tools: narrow list[object] for batch command argv typing

basedpyright treated bare list elements as Unknown after isinstance(list);
cast to list[object] so prek basedpyright exits clean.

src/plyngent/tools/danger.py

@@ -84,9 +84,7 @@ def _indent_block(text: str, *, prefix: str = "  ") -> str:
     """Indent every line of *text* (for multi-line -c bodies in confirm prompts)."""
     if not text:
         return prefix
-    return "\n".join(
-        prefix + line if line else prefix.rstrip() for line in text.splitlines()
-    )
+    return "\n".join(prefix + line if line else prefix.rstrip() for line in text.splitlines())
 
 
 def _format_argv_for_confirm(argv: Sequence[str], *, code: str | None) -> str:
@@ -198,7 +196,7 @@ def _batch_step_argv(item: object) -> list[str] | None:
     if not isinstance(command, list) or not command:
         return None
     argv: list[str] = []
-    for part in command:
+    for part in cast("list[object]", command):
         if not isinstance(part, str):
             return None
         argv.append(part)

src/plyngent/tools/process/run_command_batch.py

@@ -57,8 +57,9 @@ def _parse_step(raw: object, index: int) -> dict[str, Any]:
     if not isinstance(command, list) or not command:
         msg = f"commands[{index}].command must be a non-empty argv list"
         raise WorkspaceError(msg)
-    argv = [part for part in command if isinstance(part, str)]
-    if len(argv) != len(command):
+    command_parts = cast("list[object]", command)
+    argv = [part for part in command_parts if isinstance(part, str)]
+    if len(argv) != len(command_parts):
         msg = f"commands[{index}].command must be a list of strings"
         raise WorkspaceError(msg)
     cwd = data.get("cwd")