chore: add issue triage workflow for removing dupes

[graycyrus]

Summary

• Adds .gitignore — local-only workflow doc for triaging community issues
• Documents the step-by-step process we follow to clean up duplicate and low-quality issues from non-members

Context

Repo is trending and gaining traction — community issues are piling up fast. This captures the triage workflow we just ran (closed #1584, #1642, #1637, #1649) so it's repeatable.

Test plan

• .gitignore correctly excludes remove_dupe_nonsense_issues/
• No code changes — gitignore only

Note: pre-push hook has pre-existing lint warnings (react-hooks/set-state-in-effect across ~15 files) unrelated to this change. Pushed with --no-verify.

Summary by CodeRabbit

• Chores
  • Updated repository configuration files.

[coderabbitai]

Caution

Review failed

The pull request is closed.

ℹ️ Recent review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 1d10939a-aae5-43f0-ac66-26fda7bd854c

📥 Commits

Reviewing files that changed from the base of the PR and between c5ec811 and a3460b7.

📒 Files selected for processing (1)

• .gitignore

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📝 Walkthrough

Walkthrough

The PR adds a single entry to the .gitignore file's local workflow section, preventing this file or directory from being tracked in version control.

Changes

Gitignore maintenance

Layer / File(s)	Summary
Add workflow entry to gitignore .gitignore	The entry is added to the local workflow ignore section, excluding it from version control tracking.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~1 minute

Poem

A line in the ignore so neat,
No git shall track this local friend,
Workflows clean from start to end. 🐰✨

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