feat(trae-cn): add desktop adapter

[JasonYang0104]

Description

Add a Trae CN desktop adapter, modeled after the existing Cursor desktop adapter pattern: OpenCLI connects to the running Electron app through a Chrome DevTools Protocol endpoint and drives the active workbench target.

The adapter supports task creation, prompt sending, ask/read/export flows, model inspection/selection, activity watching, target discovery, screenshots/dumps, and explicit approval handling for visible Trae CN permission prompts.

Related issue: N/A

Type of Change

• 🐛 Bug fix
• ✨ New feature
• 🌐 New site adapter
• 📝 Documentation
• ♻️ Refactor
• 🔧 CI / build / tooling

What this PR does

• Adds clis/trae-cn/* with 15 desktop commands: activity, approve, ask, dump, export, model, new, read, screenshot, select-model, send, setup, status, targets, and watch.
• Registers Trae CN as a built-in Electron app on CDP port 39240.
• Documents Trae CN under docs/adapters/desktop/trae-cn.md and updates the adapter index, sidebar, README command tables, and generated manifest.
• Keeps live app/login state out of CI: the adapter test suite uses DOM and command mocks rather than requiring a real Trae CN session.

Approval behavior

ask and watch default to --auto-approve true for visible Trae CN terminal/delete confirmation UI, matching the intended unattended local-agent workflow. The default approval kinds are terminal,delete; keep is intentionally opt-in only.

Safety controls included here:

• --auto-approve false disables automatic approval during ask/watch.
• --approve-kinds supports terminal, delete, keep, and all; default remains terminal,delete.
• opencli trae-cn approve --dry-run true detects matching visible prompts without clicking.
• Unknown prompts are not clicked.

Checklist

• I ran the checks relevant to this PR
• I updated tests or docs if needed
• I included output or screenshots when useful

Documentation (if adding/modifying an adapter)

• Added doc page under docs/adapters/ (if new adapter)
• Updated docs/adapters/index.md table (if new adapter)
• Updated sidebar in docs/.vitepress/config.mts (if new adapter)
• Updated README.md / README.zh-CN.md when command discoverability changed
• Used positional args for the command's primary subject unless a named flag is clearly better
• Normalized expected adapter failures to CliError subclasses instead of raw Error

Screenshots / Output

Local validation:

npm run build-manifest
npx vitest run --project adapter clis/trae-cn/trae-cn.test.js
npm run typecheck
npm run build
npm run check:silent-column-drop
npm run check:typed-error-lint
git diff --check

Additional PR-gate validation run locally:

bash scripts/check-doc-coverage.sh --strict
npm run docs:build
OPENCLI_CONFIG_DIR=$(mktemp -d) npx vitest run --project unit --project extension --reporter=verbose --shard=1/2
npx vitest run --project unit --project extension --reporter=verbose --shard=2/2
OPENCLI_CONFIG_DIR=$(mktemp -d) bun vitest run --project unit --reporter=verbose
npm audit --omit=dev --audit-level=high
npx vitest run --project adapter --reporter=verbose

Results summary:

• Trae CN focused adapter tests: 1 passed, 18 passed.
• Full adapter project: 363 passed, 3438 passed.
• Unit/extension PR shards: shard 1 40 passed, 791 passed; shard 2 39 passed, 422 passed, 1 skipped.
• Bun unit project: 77 passed, 1139 passed, 1 skipped.
• Doc coverage: 156/156 adapters documented.
• Security audit: found 0 vulnerabilities.

Live Trae CN smoke test was not run because http://127.0.0.1:39240/json was not listening locally at PR time. This is intentionally not a CI dependency because it requires a locally running and logged-in Trae CN app.