fix(beta): sync v0.6.11 stability fixes

[taosu0216]

Summary

• backport the eight stability fixes released on main in v0.6.11
• preserve the beta branch workflow implementation and 0.7.0-beta.1 package versions
• restore the 0.6.11 migration manifest so beta upgrades retain stable release history

Included fixes

• Pi subagents inherit the parent model and support max thinking
• Codex channel failures surface correctly and completed turns obey idle timeout
• polyrepo Git discovery is bounded
• Python hooks decode stdin as UTF-8
• platform detection uses Trellis-owned configuration files
• CI compiles every tracked Python script on Python 3.9 and runs basedpyright

Deliberately excluded

• the main-only workflow feature and its revert
• the stable 0.6.11 package version bump
• docs-site and marketplace pointer changes

Validation

• pnpm build
• pnpm lint
• pnpm typecheck
• pnpm --filter @mindfoldhq/trellis lint:py
• all tracked Python files compile under Python 3.9 via uv
• TRELLIS_DISABLE_HOOKS=0 pnpm test (2,040 passed, 1 existing skip)

[coderabbitai]

Important

Review skipped

Auto reviews are disabled on base/target branches other than the default branch.

Please check the settings in the CodeRabbit UI or the .coderabbit.yaml file in this repository. To trigger a single review, invoke the @coderabbitai review command.

⚙️ Run configuration

Configuration used: defaults

Review profile: CHILL

Plan: Pro Plus

Run ID: e8c80a83-107d-460c-8331-1da077f99b77

You can disable this status message by setting the reviews.review_status to false in the CodeRabbit configuration file.

Use the checkbox below for a quick retry:

• 🔍 Trigger review

---

Thanks for using CodeRabbit! It's free for OSS, and your support helps us grow. If you like it, consider giving us a shout-out.

❤️ Share

• X
• Mastodon
• Reddit
• LinkedIn

_{Comment @coderabbitai help to get the list of available commands.}