fix(code-mode): preserve recursive schema types with pctx 0.4.1

[lifeizhou-ap]

Summary

Upgrade pctx_code_mode to 0.4.1, which safely supports recursive schemas.

This removes Goose’s temporary schema sanitizer from #10469. Schemas now pass directly to pctx, preserving recursive TypeScript types instead of replacing references with {}.

Also updates the pctx API usage and strengthens the recursive-schema regression test.

Testing

• Recursive-schema regression test passes
• Manually verified with a local MCP server:
  • Goose does not crash
  • Code Mode generates the recursive RetainOutputAny type

Related Issues

• Follow-up to goose serve crashes with SIGABRT — unbounded recursion in pctx_codegen schema processing when MCP server returns outputSchema #10256 and fix(acp): break self-referential $ref cycles before Code Mode schema #10469
• Upstream fix: fix: preserve recursive schema refs during type generation portofcontext/pctx#113

[michaelneale]

nice one.

@lifeizhou-ap would be curious how this impact binary size with new version of pctx

[lifeizhou-ap]

Hi @michaelneale,

We have not introduced any new crates in this PR, and the pctx packages are only about 1.9 KB larger in total.

Is there a particular binary-size impact you're concerned about? It would be helpful to understand so we can investigate it.

Otherwise, we can compare equivalent canary binaries afterward.