[Docs] Create README for independent fork

[randomm]

Problem

The current README is inherited from upstream OpenCode and doesn't reflect our independent fork's purpose, installation, or goals.

Requirements

Content to include:

1. Project identity - Name (oclite?), purpose, relationship to upstream
2. Attribution - Credit to upstream OpenCode (MIT license requirement)
3. Goals/Philosophy - Opinionated, remory-integrated, agentic workflow focused
4. Installation
   • Clone and build locally (bun run build)
   • Future: GitHub Releases with binaries
5. Configuration - Key differences from upstream
6. Distribution - GitHub-only for now (no npm, VS Code marketplace, etc.)
7. Contributing - Our contribution guidelines (if accepting)
8. License - MIT (same as upstream)

Attribution example:

Based on [OpenCode](https://github.com/anomalyco/opencode) by Anomaly Co (MIT License)

Out of Scope

• Third-party publishing (npm, Homebrew, AUR)
• VS Code extension docs
• Desktop app docs

Acceptance Criteria

• README reflects our fork's identity
• Clear installation instructions
• Upstream attribution included
• Old upstream-specific content removed