feat: add Tieba browser adapters in TypeScript

[Astro-Han]

Description

Add Baidu Tieba browser adapters in TypeScript and document them.

Related issue: #547

Type of Change

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

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

npm run typecheck
npx vitest run --project adapter src/clis/tieba/utils.test.ts src/clis/tieba/commands.test.ts
npm run dev -- validate
npm run build
npx vitest run --project e2e tests/e2e/browser-public.test.ts -t 'tieba'

Result:
- adapter tests: 16 passed
- tieba e2e: 12 passed | 9 skipped