chore: gitignore backtest_results output dir

[chizy7]

Engine's --backtest-output writes here; shouldn't be committed.

Summary by CodeRabbit

• Chores
  • Updated version control configuration to exclude backtest_results/ directory from tracking.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro

Run ID: 24ec09d6-e1db-46ed-b5bc-36c696c5c7c5

📥 Commits

Reviewing files that changed from the base of the PR and between d47d944 and 22ed7b0.

📒 Files selected for processing (1)

• .gitignore

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📝 Walkthrough

Walkthrough

The .gitignore file was modified to exclude the backtest_results/ directory from version control, preventing the directory and its contents from being tracked in the repository.

Changes

Cohort / File(s)	Summary
Version Control Configuration .gitignore	Added backtest_results/ directory to ignore patterns, preventing test results from being tracked in version control.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

🐰 A hop, a skip, some results to keep,
Hidden away where directories sleep,
Backtest numbers tucked out of sight,
Git ignores them—all clean and tight! ✨

🚥 Pre-merge checks | ✅ 2 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Description check	⚠️ Warning	The description is minimal and lacks the required template structure with Description, Type of Change, Areas Changed, Testing, and other sections.	Expand the description to follow the repository template, including Type of Change (Refactoring), Areas Changed selection, and Testing confirmation.

✅ Passed checks (2 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and concisely describes the main change: adding backtest_results directory to .gitignore, which matches the changeset exactly.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

_{✏️ Tip: You can configure your own custom pre-merge checks in the settings.}

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch chore/gitignore-backtest-results

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