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/blockchain-node.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/blockchain-node.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 AITBC Blockchain Node is the core infrastructure component that maintains the distributed ledger. It implements a hybrid Proof-of-Authority/Proof-of-Stake consensus mechanism with fast finality and supports high throughput for AI workload transactions.</p>