chore(types): type ui_schema and version_policy, drop their mypy over…

[UroojFatima-052]

Refs #415

Phase 1: removes skillware.core.ui_schema and skillware.version_policy from [[tool.mypy.overrides]] and fixes the 4 errors that surfaced. Typing only, no behavior change.

Changes

• ui_schema.py:84: normalize_fixture_samples returns dict(sample) so the list matches its List[JsonObject] return type. Fixture samples are JSON objects, so this is a same-content copy.
• version_policy.py:68, 108: cast(Any, dist.metadata).get(...). PackageMetadata declares no .get on Python 3.10 (the configured python_version), while the runtime object has it. I kept .get rather than switching to ["Name"], since on newer Pythons a missing key there raises instead of returning None.
• version_policy.py:77: cast("os.PathLike[str]", dist.locate_file(...)). I avoided str(...) so a non-filesystem locate_file result still raises and falls through to the existing except, as it does today.
• pyproject.toml: both modules dropped from the overrides list.
• CHANGELOG.md: Unreleased entry.

Verification

• mypy skillware: Success, no issues in 23 files
• black --check / flake8 on both files: clean
• pytest tests/test_version_policy.py tests/test_card_ui_schema.py: 45 passed

[rosspeili]

Thanks for tackling p1 so cleanly, @UroojFatima-052!

The typing fixes look great:

One quick thing before we merge: We cut release v0.5.8 yesterday, so the changelog diff currently slots this entry into the 0.5.8 section instead of [Unreleased]. Could you please rebase on latest main and move your entry under the top ## [Unreleased] -> ### Changed header?

Once that's rebased, this is ready to merge and you're good to take on phase 2!

[UroojFatima-052]

Hey @rosspeili,, Rebased on latest main and moved the entry under [Unreleased] -> ### Changed.

I'll start on phase 2 next.

[rosspeili]

LGTM @UroojFatima-052, merging as is. Thanks for this clean slice. Will keep #415 open until your last slice, which can close the issue. <3