feat: added auto duplicated issue and pr detector

[Abhinandankaushik]

Summary

This PR adds an automated mechanism to detect and handle duplicate issues and pull requests in the repository through the CI/CD workflow.

Problem

Currently, duplicate issues and pull requests are frequently created, which leads to:

• Redundant discussions
• Repeated work
• Increased maintenance overhead for maintainers

There was no automated system in place to proactively detect and flag such duplicates.

What this PR does

This PR introduces an automated duplicate detection mechanism that:

• Scans newly created issues and pull requests for similarity with existing ones.
• Compares them based on title, description, and labels.
• Automatically applies a possible-duplicate label to suspected duplicates.
• Posts a bot comment suggesting related existing issues with relevant links.
• Provides configurable behavior to optionally close an issue if an exact match is found.

Alternatives considered

The following alternatives were considered but rejected:

• Manual review by maintainers → Does not scale and increases workload.
• GitHub issue templates only → Helpful but does not prevent duplicate submissions.
• Strict issue submission rules → Too restrictive and may discourage contributions.

Additional context

• This feature is especially useful for large repositories with frequent contributions.
• Implemented using GitHub Actions with existing issue similarity tools / custom scripts.
• Similar functionality exists in repositories such as Kubernetes and TensorFlow.

Checklist

• Implemented automated duplicate detection in CI/CD
• Added labeling for suspected duplicates
• Added bot comment with related issue links
• Made auto-close behavior configurable

Fixed issue : #400

[Copilot]

Pull request overview

This PR introduces a GitHub Actions-based automation to detect potentially duplicate issues and pull requests and then label/comment (and optionally close on “exact matches”) to reduce duplicate reports in the repo.

Changes:

• Added a new CI workflow plus a Python-based duplicate detection script and YAML configuration.
• Added contributor documentation noting the duplicate detection behavior.
• Added/updated various site/i18n content files and a .gitattributes file for line-ending normalization.

Reviewed changes

Copilot reviewed 11 out of 15 changed files in this pull request and generated 11 comments.

Show a summary per file

File	Description
.github/workflows/duplicate-detector.yml	New workflow to run duplicate detection on issue/PR open/reopen events.
.github/scripts/detect-duplicates.py	Implements similarity-based duplicate detection and applies labels/comments (optional close).
.github/scripts/requirements.txt	Python dependencies for the workflow.
.github/duplicate-detector-config.yml	Configures thresholds, labels, and other behavior for the detector.
CONTRIBUTING.md	Documents that automated duplicate detection is used.
.gitattributes	Enforces consistent line endings and marks binaries.
i18n/en-US/docusaurus-theme-classic/navbar.json	Adds English i18n strings for navbar.
i18n/en-US/docusaurus-theme-classic/footer.json	Adds English i18n strings for footer.
i18n/en-US/docusaurus-plugin-content-docs/current.json	Adds docs i18n strings for the current version.
i18n/en-US/docusaurus-plugin-content-blog/options.json	Adds blog i18n strings.
i18n/en-US/docusaurus-plugin-content-blog/authors.yml	Adds blog author metadata.
i18n/en-US/docusaurus-plugin-content-docs/current/.keep	Adds placeholder file to keep directory in git.
src/pages/home/css/tailwind.css	Formatting/normalization changes.
src/hooks/useAOS.tsx	Formatting/normalization changes.
src/constants/index.ts	Formatting/normalization changes.

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[Copilot]

Pull request overview

Copilot reviewed 11 out of 15 changed files in this pull request and generated 5 comments.

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[Abhinandankaushik]

hey @chaokunyang
please review this pr and let me know if any changes are required or not.
Thank's