[codex] Keep inline top section title fragments together

[gyx09212214-prog]

Summary

• Keep inline top-section title fragments together when a parent element's full text already matches a top section and its direct children are inline text tags.
• Add regression coverage for the MSFT PART I. FINANCIAL INFORMATION split described in Singular Visual Line Should Be Identified as a Single TextElement #78.
• Preserve the existing behavior for block containers that include a top-section title plus body text.

Why this matters

Financial filing parsers should keep section headers as coherent semantic elements. Splitting PART I. FINANCIAL INFORMATION breaks downstream section navigation, table association, and agent retrieval over 10-Q filings.

Refs #78.

Validation

• python -m py_compile sec_parser/processing_steps/individual_semantic_element_extractor/single_element_checks/top_section_title_check.py tests/unit/processing_steps/individual_semantic_element_extractor/single_element_checks/test_top_level_section_title_check.py
• Direct TopSectionTitleCheck inline/block tests passed with dependency stubs.
• git diff --check

Note: full pytest was not run locally because this environment does not have pytest installed.

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 7 complexity · 0 duplication

Metric	Results
Complexity	7
Duplication	0

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