Support multiple agent systems

Adds support for Claude, etc. Improves the wizard and includes instructions on how to get SSH keys set up for cloning the relevant repositories.

v0.4.0

Merge skill templates into the logic-explorer agent prompt. Remove unused .opencode/skills/ infrastructure.

v0.3.0

Use OpenCode agent permission system for read-only enforcement instead of non-existent --read-only flag

v0.2.0

Interactive setup wizard — repo URLs are now prompted during first run instead of hardcoded

v0.1.0

Initial release of qasa-opencode CLI tool