Add IndexNow service configuration files for SEO integration

[Copilot]

This PR adds the necessary files to integrate IndexNow API service for improved search engine indexing of the repository's GitHub Pages site.

Changes

Three new files have been added to the repository root:

1. 828d838e26364808beb0bc20c6a0f1c7.txt - IndexNow API key verification file

   • Contains the unique key 828d838e26364808beb0bc20c6a0f1c7
   • Required by search engines to verify domain ownership

2. sitemap.xml - XML sitemap for the GitHub Pages site

   • Lists the main repository URLs including recent challenge pages
   • Follows the standard sitemaps.org schema format
   • Includes August 26 2025 and September 9 2025 challenge pages

3. request.txt - IndexNow API request template

   • Contains a properly formatted HTTP POST request to api.indexnow.org
   • References the key file at the correct location
   • URL list matches the sitemap.xml entries exactly

Purpose

IndexNow is a protocol that allows websites to instantly notify search engines (Bing, Yandex, etc.) about new or updated content, rather than waiting for search engines to discover changes through regular crawling. This improves the discoverability and indexing speed of the SlothBytes Weekly Challenges content.

The request.txt file can be used as a template for making IndexNow API requests whenever new content is published to the repository.

Original prompt

Add 828d838e26364808beb0bc20c6a0f1c7.txt with content 828d838e26364808beb0bc20c6a0f1c7
for indexNow service and also in a request.txt file, make an indexnow request POST /IndexNow HTTP/1.1
Content-Type: application/json; charset=utf-8
Host: api.indexnow.org
{
"host": "www.example.org",
"key": "828d838e26364808beb0bc20c6a0f1c7",
"keyLocation": "https://www.example.org/828d838e26364808beb0bc20c6a0f1c7.txt",
"urlList": [
"https://www.example.org/url1",
"https://www.example.org/folder/url2",
"https://www.example.org/url3"
]
} which matches sitemap.xml

---

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[SabhyaAggarwal]

@copilot 
Meta Description tag missing

• 1 instance found
  How to fix?
  What is the issue about?
  Search engines may use the description provided in the tag in the search engine results page (SERP). A well-written description that pertains to the content of the page and that is relevant to the searcher's intent can help you increase traffic since it can help improve the click-through rate of your page in search.
  How to fix?
  Add a description to the section of the page source: .

[Copilot]

@copilot 
Meta Description tag missing

• 1 instance found
  ...

I don't see any HTML files in the repository currently - it only contains Python/Rust code and README files. To add a meta description tag, I would need to create an index.html file or configure GitHub Pages with a _config.yml file.

Could you clarify:

1. Should I create an index.html file with meta description tags?
2. Or should I set up Jekyll configuration for GitHub Pages?
3. What description would you like for the meta tag?

The sitemap I created references GitHub Pages URLs, but there are no HTML files yet to add meta tags to.