Change default tool from opencode to claude in ralph.sh

[Miyamura80]

Summary

Updated the default tool in the ralph.sh script from "opencode" to "claude".

Changes

• Changed the default TOOL variable from "opencode" to "claude" in scripts/ralph.sh

Testing

• Tests pass (make test)
• Linting passes (make ci)

Related Issues

Closes #

https://claude.ai/code/session_018BqUdtzmwxWCwi98naYiNA

[greptile-apps]

Greptile Summary

Updated the default tool in ralph.sh from "opencode" to "claude". This is a straightforward configuration change that aligns the script's default behavior with the project's tooling preference.

• Changed TOOL variable default from "opencode" to "claude" on line 8
• No logic changes, validation, or error handling affected
• The script still supports all three tools (opencode, amp, claude) via the --tool flag

Confidence Score: 5/5

• This PR is safe to merge with minimal risk
• The change is a simple one-line configuration update that changes a default value. The logic is unchanged, all validation remains in place, and the script still supports all three tools via command-line flags.
• No files require special attention

Important Files Changed

Filename	Overview
scripts/ralph.sh	Changed default tool from opencode to claude - straightforward configuration change with no logic issues

_{Last reviewed commit: a9fb9ed}