fix: update branch name from master to main in CONTRIBUTING.md

[mesutoezdil]

The default branch is main, not master. Updated the contributor workflow section to reflect this.

Summary by CodeRabbit

• Documentation
  • Updated contributor guidance to recommend creating topic branches from main instead of master.
  • Added an “Issue and PR Lifecycle” section defining response expectations (including a two-week follow-up window) and closing behavior when there’s no reply.
  • Clarified that issues and pull requests can be reopened or resubmitted later if still relevant, to help keep the backlog focused.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: c95a98c8-c4d5-494b-93da-8214b7676283

📥 Commits

Reviewing files that changed from the base of the PR and between 2759317 and f3a9550.

📒 Files selected for processing (1)

• CONTRIBUTING.md

✅ Files skipped from review due to trivial changes (1)

• CONTRIBUTING.md

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📝 Walkthrough

Walkthrough

Updates CONTRIBUTING.md to change the topic-branch base from master to main and adds a new "Issue and PR Lifecycle" section describing a two-week response deadline, automatic closure policy, and reopening guidance.

Changes

Contributing Docs Updates

Layer / File(s)	Summary
Branch rename and lifecycle policy CONTRIBUTING.md	Changes the topic-branch base from master to main; adds an "Issue and PR Lifecycle" subsection with a two-week response deadline, automatic closure after no response, and note about reopening/resubmitting.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Poem

A rabbit hops from "master" to "main,"
New lifecycle rules keep the backlog sane.
Two weeks to respond or the issue may close,
But reopen it later if relevance grows.
🐇✨ Clean trails ahead on the contribution lane!

🚥 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 accurately reflects the branch-name update in CONTRIBUTING.md and is clearly related to the main change.
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

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_{Comment @coderabbitai help to get the list of available commands.}

[archlitchi]

/lgtm

[hami-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: archlitchi, mesutoezdil

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