Description

Provide a one-liner shell installer that detects OS and architecture, downloads the correct binary from GitHub Releases, and places it in /usr/local/bin.

curl -sSL https://raw.githubusercontent.com/vmvarela/sql-pipe/master/install.sh | sh

Acceptance Criteria

• install.sh at repo root detects uname -s and uname -m to pick the right binary
• Supports: Linux x86_64, Linux aarch64, macOS x86_64, macOS aarch64
• Prints a clear error for unsupported platforms
• Verifies SHA256 checksum after download
• Defaults to /usr/local/bin, respects INSTALL_DIR env var override
• Documented in README under Installation section

Notes

• Fallback installation method while official package managers gain traction
• Keep it POSIX sh-compatible (no bashisms)