Summary

Sync the packages/opencode tool slice toward the upstream v1.4.11 shape for PR2.

• remove retired filetime and list tool paths
• align read, write, edit, glob, grep, skill, and registry wiring with upstream behavior
• preserve the fork-only trash tool and restore its guardrails and tests
• add regression coverage for ripgrep exit handling, env sanitization, grep abort and invalid regex handling, legacy list rendering fallback, and trash permission flow

Why

Issue #27 tracks the broader multi-PR graft from upstream opencode v1.4.6 to v1.4.11.
This PR only lands the opencode-tool slice, including the local trash tool difference that PawWork keeps on purpose.

Related Issue

Part of #27

How To Verify

cd packages/opencode
bun run test:ci
cd ..
git diff --check

Screenshots or Recordings

N/A, no visible UI changes.

Checklist

• I ran the relevant verification steps
• I tested visible changes manually when needed
• I am targeting the dev branch