chore: add .gitattributes for cross-platform CRLF handling

[getappz]

• Enforce LF for Rust source, Cargo.toml, shell scripts
• Binary lock files
• Closes ponytail PR audit ticket [ponytail#537] CRLF handling + version from Cargo.toml, not hardcoded #69

Summary by CodeRabbit

• Chores
  • Added repository line-ending rules to keep text files consistent across platforms.
  • Ensured shell scripts and Rust-related files use LF endings.
  • Marked lock files as binary to avoid unwanted normalization.

[coderabbitai]

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ℹ️ Recent review info

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Run ID: b0db007b-ef22-4385-bea8-c9dd7a697ec8

📥 Commits

Reviewing files that changed from the base of the PR and between 7af46db and f2f6de3.

📒 Files selected for processing (1)

• .gitattributes

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📝 Walkthrough

Walkthrough

A new .gitattributes file is added to configure repository-wide text handling: auto-detection of text files, enforced LF line endings for shell scripts and Rust source files, and binary treatment for lock files.

Changes

Line-ending normalization

Layer / File(s)	Summary
Add .gitattributes config .gitattributes	Adds text auto-detection, forces LF for *.sh and Rust files (*.rs, Cargo.toml, Cargo.lock), and marks *.lock files as binary.

Estimated code review effort: 1 (Trivial) | ~2 minutes

Possibly related issues

• [ponytail#537] CRLF handling + version from Cargo.toml, not hardcoded #69: Both changes modify .gitattributes to address line-ending/CRLF normalization concerns.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is missing the required Summary, Test plan, and reviewer notes sections.	Add the template sections with a brief summary, the cargo test/clippy/fmt plan, and notes on risk areas and backward compatibility.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly describes the main change: adding .gitattributes to control line endings.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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)

• Create PR with unit tests
• Commit unit tests in branch fix/crlf-cargo-version

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