chore: update marketing site links to official jenkinsci repo

Point all GitHub and download links to the official plugin home:
- GitHub links → jenkinsci/forgeai-pipeline-intelligence-plugin
- Download / release links → plugins.jenkins.io/forgeai-pipeline-intelligence
- Update hero badge and Quick Start step 1 to reference the update center

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: saurabh-oss

docs/index.html

@@ -423,9 +423,9 @@
     <li><a href="#providers">Providers</a></li>
     <li><a href="#comparison">Why ForgeAI</a></li>
     <li><a href="#quickstart">Quick Start</a></li>
-    <li><a href="https://github.com/saurabh-oss/forgeai-pipeline-intelligence" target="_blank">GitHub</a></li>
+    <li><a href="https://github.com/jenkinsci/forgeai-pipeline-intelligence-plugin" target="_blank">GitHub</a></li>
   </ul>
-  <a href="https://github.com/saurabh-oss/forgeai-pipeline-intelligence/releases" class="nav-cta" target="_blank">Download .hpi</a>
+  <a href="https://plugins.jenkins.io/forgeai-pipeline-intelligence/" class="nav-cta" target="_blank">Plugin Site</a>
 </div>
 </nav>
 
@@ -434,14 +434,14 @@
   <div class="hero-bg"></div>
   <div class="hero-grid"></div>
   <div class="hero-content">
-    <div class="hero-badge"><span class="dot"></span> Open Source &middot; MIT License &middot; v1.0</div>
+    <div class="hero-badge"><span class="dot"></span> Open Source &middot; MIT License &middot; Now on Jenkins Update Center</div>
     <h1>AI-powered <em>pipeline intelligence</em> for Jenkins</h1>
     <p class="hero-sub">
       8 specialized analyzers for code review, vulnerability scanning,
       architecture drift detection, and release readiness — directly in your CI/CD pipeline.
     </p>
     <div class="hero-actions">
-      <a href="https://github.com/saurabh-oss/forgeai-pipeline-intelligence" class="btn-primary" target="_blank">View on GitHub</a>
+      <a href="https://github.com/jenkinsci/forgeai-pipeline-intelligence-plugin" class="btn-primary" target="_blank">View on GitHub</a>
       <a href="#quickstart" class="btn-secondary">Quick Start Guide</a>
     </div>
 
@@ -729,8 +729,8 @@ <h3>Release Readiness</h3>
     <div class="install-step">
       <span class="step-num">1</span>
       <h3>Install the plugin</h3>
-      <p>Download the <code>.hpi</code> from GitHub Releases and upload via Manage Jenkins &rarr; Plugins &rarr; Advanced.</p>
-      <code>mvn clean package -DskipTests</code>
+      <p>Search for <strong>ForgeAI Pipeline Intelligence</strong> in Manage Jenkins &rarr; Plugins &rarr; Available, or download the <code>.hpi</code> from the plugin site.</p>
+      <code>plugins.jenkins.io/forgeai-pipeline-intelligence</code>
     </div>
     <div class="install-step">
       <span class="step-num">2</span>
@@ -783,8 +783,8 @@ <h3>Add to your pipeline</h3>
     <div class="section-title">Start forging smarter pipelines today</div>
     <p style="color:var(--text-secondary);margin-bottom:2rem;font-size:1.05rem">Open source. MIT License. Free forever.</p>
     <div class="hero-actions" style="justify-content:center">
-      <a href="https://github.com/saurabh-oss/forgeai-pipeline-intelligence" class="btn-primary" target="_blank">Star on GitHub</a>
-      <a href="https://github.com/saurabh-oss/forgeai-pipeline-intelligence/releases" class="btn-secondary" target="_blank">Download Latest Release</a>
+      <a href="https://github.com/jenkinsci/forgeai-pipeline-intelligence-plugin" class="btn-primary" target="_blank">Star on GitHub</a>
+      <a href="https://plugins.jenkins.io/forgeai-pipeline-intelligence/" class="btn-secondary" target="_blank">Install from Update Center</a>
     </div>
   </div>
 </div>
@@ -794,8 +794,9 @@ <h3>Add to your pipeline</h3>
 <footer>
 <div class="container">
   <p>
-    ForgeAI Pipeline Intelligence &middot; <a href="https://github.com/saurabh-oss/forgeai-pipeline-intelligence">GitHub</a> &middot;
-    <a href="https://github.com/saurabh-oss/forgeai-pipeline-intelligence/blob/main/LICENSE">MIT License</a> &middot;
+    ForgeAI Pipeline Intelligence &middot; <a href="https://github.com/jenkinsci/forgeai-pipeline-intelligence-plugin">GitHub</a> &middot;
+    <a href="https://plugins.jenkins.io/forgeai-pipeline-intelligence/">Plugin Site</a> &middot;
+    <a href="https://github.com/jenkinsci/forgeai-pipeline-intelligence-plugin/blob/main/LICENSE">MIT License</a> &middot;
     Built with <span style="color:var(--accent)">&hearts;</span> and Claude
   </p>
 </div>