feat: added contributing

Author: Rieranthony

CONTRIBUTING.md

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+# Contributing to Origami Chat
+
+👋 Hey there — thanks for your interest in Origami Chat!
+
+This project is still in its **early development phase**, and we’re currently focused on building a solid, secure, and scalable foundation before accepting external contributions.
+
+---
+
+## 🚧 Pull Requests
+
+We’re **not accepting public pull requests just yet**.
+
+Why?
+
+- The core architecture is still evolving rapidly.
+- Interfaces, abstractions, and structure may change week-to-week.
+- We want to avoid wasting your time on PRs that might get rewritten or rejected due to architectural shifts.
+
+Once the foundation is stable, we’ll **open contributions with clear scopes, issues, and guidance**.
+
+---
+
+## ✅ What You _Can_ Do Right Now
+
+- **Star the repo** to support the project.
+- **Open issues** to report bugs, suggest features, or discuss implementation ideas.
+- **Help shape the roadmap** — we read every issue and discussion.
+- **Share feedback** on the API, SDK structure, or early docs.
+- **Join the waitlist or early access** once announced.
+
+---
+
+## 🛡️ Our Commitment
+
+When we open contributions, we’ll make it worth your time:
+
+- Clear contribution guidelines
+- Well-documented code
+- Modular architecture
+- Respect for your effort
+
+---
+
+## 📬 Contact
+
+Have something important, urgent, or security-related?
+
+📧 **anthony@origami.chat**
+
+---
+
+Thanks again — we’re building Origami Chat for developers like you, and we can’t wait to open the doors soon.
+
+— Anthony, founder of Origami Chat