Summary

• Bumps @j178/prek catalog to ^0.3.11, which ships j178/prek#1979 + j178/prek#1982 (Android/Termux launcher support).
• Removes the pre-commit Python fallback from gtb prepare. It existed only because prek's binary couldn't load on Bionic; with the launcher fix it does.
• Adds a new "Termux/Android setup" section in the root README that consolidates the existing turbo-unavailable callout with a new note about UV_LIBC=none. The UV_LIBC workaround handles a separate uv-on-Bionic quirk: prek's bundled uv aborts during managed-Python discovery because Bionic isn't recognized as glibc or musl, so uv needs to be told to fall back to system Python. j178 confirmed in #51 that the fall-through is plausibly a uv bug, not a prek one — filing upstream is optional given the workaround.

Closes #51.

Test plan

• pnpm -C packages/cli typecheck:ts
• pnpm -C packages/cli lint:eslint
• pnpm -C packages/cli test:vitest:fast — 194/194, including the 4 prepare.test.ts cases
• Root pnpm lint:eslint (covers root README + workspace files)
• pnpm exec prek install-hooks on Termux with UV_LIBC=none — succeeds end-to-end (Python venvs created, hooks installed)
• pnpm exec prek run check-added-large-files on Termux with UV_LIBC=none — Python hook executes and passes
• Full pnpm build on a non-Termux runner — Termux OOMs the full turbo pipeline, so the heavy build/slow/e2e tiers need to be validated by CI

Notes

• The cross-spawn import was removed from prepare.ts since the only call site (the unset of core.hooksPath before pre-commit fallback) is gone. cross-spawn stays in the cli package — still used by pack-npm.ts and lib/process.ts.

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