Add complete community documentation

- README.md: Product overview + issue tracker landing
- SECURITY.md: Responsible disclosure policy
- CODE_OF_CONDUCT.md: Community guidelines
- CONTRIBUTING.md: How to contribute
- SUPPORT.md: Comprehensive support guide
- Issue templates: Bug, feature, support, docs, security

All references updated to evercatch.dev domain.

CODE_OF_CONDUCT.md

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+# Code of Conduct
+
+## Our Pledge
+
+We are committed to providing a welcoming, inclusive, and harassment-free experience for everyone, regardless of age, body size, disability, ethnicity, gender identity and expression, level of experience, nationality, personal appearance, race, religion, or sexual identity and orientation.
+
+## Our Standards
+
+### ✅ Expected Behavior
+
+- Be respectful and professional
+- Use welcoming and inclusive language
+- Accept constructive feedback gracefully
+- Focus on what's best for the community
+- Show empathy towards others
+- Help others when you can
+
+### ❌ Unacceptable Behavior
+
+- Harassment, discrimination, or hate speech
+- Trolling, insulting, or inflammatory comments
+- Personal or political attacks
+- Publishing others' private information
+- Spam or excessive self-promotion
+- Any conduct that would be inappropriate in a professional setting
+
+## Scope
+
+This Code of Conduct applies to:
+
+- Issue tracker discussions
+- Pull request comments
+- Community forums
+- Email communications
+- Social media interactions
+- Any Evercatch community space
+
+## Enforcement
+
+### Reporting
+
+If you experience or witness unacceptable behavior:
+
+**Email:** [conduct@evercatch.dev](mailto:conduct@evercatch.dev)
+
+Include:
+- Description of the incident
+- Date and time
+- Links to evidence (if applicable)
+- Your contact information
+
+### Response
+
+We will:
+
+1. **Acknowledge** - Respond within 24 hours
+2. **Investigate** - Review the incident
+3. **Act** - Take appropriate action
+4. **Follow-up** - Update you on the outcome
+
+### Consequences
+
+Violations may result in:
+
+- **Warning** - First offense, minor violation
+- **Temporary Ban** - Repeated violations
+- **Permanent Ban** - Severe or repeated violations
+- **Legal Action** - For threats, harassment, or illegal activity
+
+## Attribution
+
+This Code of Conduct is adapted from the [Contributor Covenant](https://www.contributor-covenant.org/), version 2.1.
+
+## Questions?
+
+Email [conduct@evercatch.dev](mailto:conduct@evercatch.dev)
+
+---
+
+**Thank you for helping make Evercatch a welcoming community!** ❤️