docs: add script to generate llm.txt

[Laffery]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/NG-ZORRO/ng-zorro-antd/blob/master/CONTRIBUTING.md#commit
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Documentation content changes
• Application (the showcase website) / infrastructure changes
• Other... Please describe:

What is the current behavior?

Issue Number: N/A

What is the new behavior?

Add a script to generate llm.txt for ng-zorro-antd, inspired by https://github.com/ant-design/ant-design/blob/master/scripts/generate-llms.ts, which will be executed automatically by npm run start or npm run build.

The generated files are available with url

• https://ng.ant.design/llms.txt
• https://ng.ant.design/llms-full.txt

Does this PR introduce a breaking change?

• Yes
• No

Other information

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.12%. Comparing base (a1b16a9) to head (cc32c47).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #9281      +/-   ##
==========================================
+ Coverage   92.08%   92.12%   +0.04%     
==========================================
  Files         561      561              
  Lines       19627    19627              
  Branches     3106     3106              
==========================================
+ Hits        18074    18082       +8     
+ Misses       1214     1206       -8     
  Partials      339      339              

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[Copilot]

Pull Request Overview

This PR adds a script to generate LLM-friendly documentation files (llms.txt and llms-full.txt) for the ng-zorro-antd project, inspired by the Ant Design implementation. The script extracts documentation content from markdown files and formats it for consumption by Large Language Models.

• Adds a new generateLLms function that processes documentation markdown files
• Integrates the LLM generation into the site build process
• Configures build assets to include the generated LLM files

Reviewed Changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated no comments.

File	Description
scripts/generate-llms.ts	Core script that processes markdown files and generates LLM-friendly documentation
scripts/gulp/tasks/site.ts	Integrates LLM generation into the site initialization task
package.json	Adds tsx dependency and llms npm script for standalone execution
angular.json	Includes generated LLM files in the build assets

Comments suppressed due to low confidence (4)

scripts/generate-llms.ts:14

• The function name 'generateLLms' uses inconsistent capitalization. It should be 'generateLLMs' to properly capitalize the acronym.

export async function generateLLms(): Promise<void> {

scripts/generate-llms.ts:93

• The function call 'generateLLms()' uses inconsistent capitalization. It should be 'generateLLMs()' to match the corrected function name.

    await generateLLms();

scripts/gulp/tasks/site.ts:14

• The import 'generateLLms' uses inconsistent capitalization. It should be 'generateLLMs' to properly capitalize the acronym.

import { generateLLms } from '../../generate-llms';

scripts/gulp/tasks/site.ts:54

• The function call 'generateLLms()' uses inconsistent capitalization. It should be 'generateLLMs()' to match the corrected function name.

  await generateLLms();

[HyperLife1119]

LGTM