feat(cli): support local code directives

[kadymov]

Summary

• add OSS CLI support for local {% code %} directives in HTML and md2md builds
• support relative/input-root paths, lang, numeric and marker ranges, and keep-indents
• keep fenced examples and jsonpath directives unchanged for compatibility
• report invalid ranges and inaccessible files as build errors with safe placeholders
• add focused unit and integration coverage

Testing

• npm test — 2008 passed, 1 skipped
• npm run typecheck
• npm run lint
• npm run build
• npx vitest run -c vitest.integration.config.ts tests/e2e/code-includer.spec.ts
• built the documentation repository with the locally built CLI

Related

• DOCSTOOLS-6666
• Встраивание файлов из внешних источников ({% include-code %}) #2207
• feat(build): include code from external sources #2209 (external Git/HTTP sources remain out of scope)
• Documentation: docs(syntax): document local code directives docs#347

[sonarqubecloud]

Quality Gate passed

Issues
3 New issues
0 Accepted issues

Measures
0 Security Hotspots
82.3% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud