Update dependencies to resolve max out tokens issue

[nsimmons]

Summary

Fix for #65, and alternate solution from #75

@anthropic-ai/claude-agent-sdk 0.1.0 gem has a hard limit of 32k output tokens. This limit means that setting CLAUDE_CODE_MAX_OUTPUT_TOKENS to > 32k has no impact. Upgrading to the latest version solves this issue as that limitation has been removed.

Changes

• Upgraded @anthropic-ai/claude-agent-sdk 0.1.0 and dependent zod gems to latest versions.
• Modified src/ai/claude-executor.ts to pass CLAUDE_CODE_MAX_OUTPUT_TOKENS in the way newest version of claude agent SDK expects.

Test Plan

• Set CLAUDE_CODE_MAX_OUTPUT_TOKENS to 64k
• Run ./shannon start on a repo that generates a pre-recon output that is larger than 32k
• Verify deliverable is created without any output token errors

I understand you're not accepting external PRs. I have found this tool very useful and wanted to do what I can to suggest improvements even if they are not accepted. If it helps you resolve an issue faster then I have done my part to contribute back.

[keygraphVarun]

Thanks for digging into this and for the detailed write-up!

Upgrading the Claude Agent SDK has been a priority for us for a while, but it comes with a number of breaking changes, so we have been taking the time to do it carefully. We have a preliminary version interally and are still testing it - we should be pushing it later this week, which will fix this issue.

[nsimmons]

That's great news, thanks for the update.