Update deployment script and documentation

- Add S3 bucket support with fallback to ice-puremichigan-lol
- Update deployment script to handle both S3 and local file copying
- Support custom S3 bucket via S3_BUCKET_NAME environment variable
- Update HTTPS clone URL in README and deploy.sh
- Improve CLAUDE.md with single test execution instructions
- Update deployment paths to use /opt/icewatch

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

README.md

@@ -27,7 +27,7 @@ A community-driven web application for tracking winter road conditions and icy h
 
 1. **Clone the repository:**
    ```bash
-   git clone git@git.deco.sh:deco/ice.git
+   git clone https://git.deco.sh/deco/ice.git
    cd ice
    ```