[UroojFatima-052]

Refs #415

Phase 4: removes skillware.cli from the mypy overrides and fixes the 3 errors that surfaced. Typing only, no behavior change.

Changes

• cli.py (_resolve_pytest_targets): the second searched: List[Path] = [] drops its annotation, since searched is already declared with that type in the earlier skill_id branch of the same function (no-redef).
• cli.py (config submenu): child_nav: Optional[Union[int, str]] = None. cmd_addressbook_interactive returns int | str, while the other submenus return Optional[str], so mypy rejected the assignment. This one wasn't in the issue list; it showed up once the override was removed. child_nav is only compared against _NAV_EXIT, which works for all three types.
• cli.py (_lerp_rgb): returns an explicit 3-element tuple instead of tuple(... for i in range(3)), so the return type is Tuple[int, int, int] rather than Tuple[int, ...]. Same values.
• pyproject.toml: cli was the last module in [[tool.mypy.overrides]], and mypy rejects an override with an empty module list, so the whole block is removed here. Phase 5 then only needs to enable check_untyped_defs and disallow_incomplete_defs.
• CHANGELOG.md: Unreleased entry.

Verification

• mypy skillware: Success, no issues in 25 files (no overrides)
• black --check / flake8 on cli.py: clean
• pytest tests/test_cli.py: 138 passed

[rosspeili]

LGTM! @UroojFatima-052, thanks a lot. Merging as is.