fix: ignore commented inline-test markers

[statxc]

Summary

close #1431

Fix has_inline_tests() so Rust/Zig/D inline-test detection no longer treats markers inside comments or string literals as real tests.

The existing regex remains as a fast prefilter, but matches are now verified against tree-sitter AST nodes:

• Rust: attribute_item / inner_attribute_item
• Zig: TestDecl
• D: unittest_declaration

This preserves the current file-level inline-test demotion behavior while avoiding false positives from docs, examples, comments, and raw strings.

Problem

has_inline_tests() regex-scanned raw source text. A production Rust file containing #[test] only inside a block comment or raw multiline string was classified as an inline-test file.

That caused calculate_token_score_from_file_changes() to demote the whole file to ScoringCategory.TEST and apply TEST_FILE_CONTRIBUTION_WEIGHT = 0.05.

Validation

• uv run pytest -q tests/validator/test_inline_test_detection.py
• uv run pytest -q tests/validator/test_token_scoring_integration.py tests/validator/test_inline_test_detection.py
• uv run pytest tests/ -v
• uv run pre-commit run --all-files --show-diff-on-failure
• SKIP=pytest uv run pre-commit run --all-files --hook-stage pre-push

Result: full test suite passed, 914 tests.

[statxc]

@anderdc I hope you are doing well.
Could you explain about why this was closed.