feat: Convert HTML documentation to markdown and add web format

- Convert all HTML documentation files to markdown format in /docs folder
- Add markdown links to HTML documentation pages
- Update all aitbc.io references to aitbc.bubuit.net
- Create HTML web format versions of key documentation files
- Update documentation index to show both HTML and web format options
- Add flowchart documentation explaining CLI job submission process

website/docs/coordinator-api.html

@@ -300,6 +300,11 @@
 
             <!-- Overview -->
             <section class="content-section">
+                <div class="alert alert-info" style="margin-bottom: 2rem;">
+                    <strong>📚 Also available in Markdown:</strong> 
+                    <a href="https://gitea.bubuit.net/oib/aitbc/src/branch/main/docs/coordinator-api.md" target="_blank" style="color: inherit; text-decoration: underline;">View this documentation in markdown format</a> for easier contribution and version control.
+                </div>
+                
                 <h2>Overview</h2>
                 <p>The Coordinator API is the central orchestration layer that manages job distribution between clients and miners in the AITBC network. It handles job submissions, miner registrations, and tracks all computation receipts.</p>