Add properties pdfVersion and header to PDDocument

[MaximPlusov]

Summary by CodeRabbit

• New Features
  • PDF documents now expose their PDF version and header information.

[coderabbitai]

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No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Advanced

Run ID: 9add7f00-6146-4bf4-82a3-27df26aa8361

📥 Commits

Reviewing files that changed from the base of the PR and between 7da3e57 and 3ef032a.

📒 Files selected for processing (1)

• src/main/java/PDLayer.mdl

Included review availability: Your plan provides up to 1 included review per hour; 0 remain after this review.

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📝 Walkthrough

Walkthrough

PDDocument adds pdfVersion and header string properties.

Changes

PDDocument PDF metadata

Layer / File(s)	Summary
Add PDF metadata properties src/main/java/PDLayer.mdl	PDDocument declares pdfVersion and header as string properties.

Priority: ⬇️ Low

Estimated code review effort: 1 (Trivial) | ~4 minutes

Change: Feature

Merge Risk: ⚪ Minimal · up to 3ef03

No actionable merge-blocking issue is established for this model change. Downstream implementations may still need to supply the new values.

Architecture Summary

Architecture risk: 🔵 Low · up to 3ef03

The change affects 1 system.

Changed systems: src

Architecture concerns
No architecture-level concerns identified.

Review details

Systems and components

• observed — src (service) was modified; 1 changed file maps to changed impact.

Before / after behavior

• observed — Modified behavior in src/main/java/PDLayer.mdl: PDDocument adds the pdfVersion and header string properties, documented as the PDF version based on the file header and catalog Version entry and the PDF header content, respectively.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main change: adding the pdfVersion and header properties to PDDocument.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Commit to this branch
• Create a new PR

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