add CONTRIBUTING.md

.github/ISSUE_TEMPLATE/bug_report.md

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+---
+name: "Bug report"
+about: Report a bug or unexpected behavior in rust-rpxy
+title: "[Bug] "
+labels: bug
+assignees: ""
+---
+
+## Describe the bug
+
+A clear and concise description of what the bug is.
+
+---
+
+## To Reproduce
+
+Steps to reproduce the behavior:
+
+1. Go to '...'
+2. Run '...'
+3. See error
+
+---
+
+## Expected behavior
+
+What did you expect to happen?
+
+---
+
+## Environment
+
+- rust-rpxy version:
+- OS:
+- Rust version:
+- Configuration file (sanitized if necessary):
+
+---
+
+## Additional context
+
+Add any other context about the problem here.
+
+---
+
+## Important notes
+
+- Please provide sufficient detail (logs, configs, reproduction steps). Issues without this may be closed as incomplete.
+- This project is maintained on a best-effort basis.
+- This project is primarily driven by the code owner's personal interests, not by commercial demand or contractual obligations.

.github/ISSUE_TEMPLATE/config.yml

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+blank_issues_enabled: false
+contact_links:
+  - name: Security reports
+    url: ../../security/advisories/new
+    about: Please report security vulnerabilities via GitHub's private vulnerability reporting. Do not open public issues for security problems.

.github/ISSUE_TEMPLATE/feature_request.md

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+---
+name: "Feature request"
+about: Suggest an idea for rust-rpxy
+title: "[Feature] "
+labels: enhancement
+assignees: ""
+---
+
+## Feature description
+
+A clear and concise description of the feature you are requesting.
+(What do you want to happen?)
+
+---
+
+## Motivation
+
+Why is this feature important for your use case?
+(Please describe the problem you are facing, not only the desired solution.)
+
+---
+
+## Alternatives considered
+
+Have you considered any alternatives or workarounds?
+(Please describe what you tried, e.g., configuration changes, external tools, or client-side modifications.)
+
+---
+
+## Your contribution
+
+Would you be willing to:
+
+- [ ] Submit a Pull Request implementing this feature
+- [ ] Sponsor the development (via GitHub Sponsors / other)
+
+---
+
+## Important notes
+
+- Features that cause compatibility issues or are out of project scope may be declined.
+- This project is maintained on a best-effort basis. Requests without contributions (PR or sponsorship) may not be prioritized.
+- This project is primarily driven by the code owner's personal interests, not by commercial demand or contractual obligations.

.github/ISSUE_TEMPLATE/question.md

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+---
+name: "Question"
+about: Ask a question about using rust-rpxy
+title: "[Question] "
+labels: question
+assignees: ""
+---
+
+## Your question
+
+Clearly describe your question.
+
+---
+
+## Context
+
+Why are you asking this? Please describe your environment or situation briefly.
+
+---
+
+## Important notes
+
+- Before opening a Question issue, please also consider using **GitHub Discussions** if your question is more open-ended, opinion-based, or community-related.
+- Questions may not always be answered immediately.
+- Please check the documentation and existing issues before opening a new one.
+- This project is maintained on a best-effort basis.
+- This project is primarily driven by the code owner's personal interests, not by commercial demand or contractual obligations.

.github/ISSUE_TEMPLATE/security.md

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+# Security Policy
+
+## Supported Versions
+
+Only the latest release of rust-rpxy is actively maintained.
+Older versions may not receive security updates.
+
+## Reporting a Vulnerability
+
+If you believe you have found a security vulnerability in rust-rpxy:
+
+- Please use **[GitHub's Private vulnerability reporting](../../security/advisories/new)** feature.
+- Do **not** create a public Issue for security problems.
+
+We will review the report as soon as possible and get back to you.
+Please allow a reasonable amount of time for investigation and fixes.
+
+## Notes
+
+- This project is primarily maintained based on the code owner's personal interests, not on commercial demand.
+- Reports are handled on a best-effort basis.
+- If you need guaranteed response times or dedicated support, please consider sponsoring or maintaining your own fork.

CONTRIBUTING.md

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+# Contributing to rust-rpxy
+
+Thank you for your interest in contributing to rust-rpxy!
+This project is maintained primarily based on the code owner's personal interests.
+It is not backed by any commercial contract or SLA. Contributions are therefore handled on a **best-effort basis**.
+
+---
+
+## Ways to contribute
+
+### 1. Reporting issues
+
+- Use the appropriate Issue template (Bug, Feature request, or Question).
+- For questions, please also consider using **GitHub Discussions** instead of Issues.
+- Please provide as much detail as possible (logs, configs, environment) to make the report useful.
+
+### 2. Suggesting new features
+
+- Feature requests should explain **why** the feature is needed and what alternatives exist.
+- Unclear or vague requests may be closed without action.
+- Features that introduce compatibility problems or are outside the project scope are unlikely to be accepted.
+- If the feature is critical for your environment, please consider:
+  - Implementing it in your own fork, or
+  - Sponsoring its development.
+
+### 3. Submitting code (Pull Requests)
+
+- Contributions are welcome! Please:
+  - Ensure code is formatted with `cargo fmt`.
+  - Run tests with `cargo test` and confirm they pass.
+  - Keep commits clean and focused.
+- Large changes should be discussed in an Issue or Discussion before a PR is submitted.
+
+### 4. Documentation improvements
+
+- Fixing typos, clarifying explanations, and improving examples are always appreciated.
+
+### 5. Security reports
+
+- Do **not** open public Issues for security vulnerabilities.
+- Please report them via [GitHub's Private vulnerability reporting](../../security/advisories/new).
+- Reports are handled confidentially and on a best-effort basis.
+
+---
+
+## Code of Conduct
+
+Be respectful and constructive.
+Aggressive, entitled, or hostile communication may result in your Issue or PR being closed without further discussion.
+
+---
+
+## Final notes
+
+- This project exists because of personal research and interests of the maintainer.
+- Time and resources are limited. Contributions that come with clear motivation, good context, or sponsorship are far more likely to be accepted.
+- Thank you for understanding and for supporting rust-rpxy!

README.md

@@ -462,7 +462,6 @@ todo!
 
 If you discover a security vulnerability, **do not open a public Issue**.
 Please use [GitHub's Private vulnerability reporting](../../security/advisories/new) to notify the maintainers.
-Reports will be handled on a best-effort basis, as this project is maintained primarily based on the code owner's personal interests.
 
 ## Contributing