Simplify main-features page and clean up getting-started prerequisites

- Replace embedded videos and usage examples with link to home.robusta.dev
- Add signup link to Next Steps on main-features
- Remove "Robusta UI sink enabled" prerequisite from getting-started
- Link Robusta SaaS account prerequisite to signup page

https://claude.ai/code/session_0184fwhrjC4ELrYQBMCbyhfS

Author: claude

docs/configuration/holmesgpt/getting-started.rst

@@ -9,8 +9,7 @@ Prerequisites
 .. raw:: html
 
    <div style="margin: 20px 0; padding: 15px; background-color: #fff3e0; border-left: 4px solid #ff9800;">
-   ✓ Robusta SaaS account (free or paid)<br>
-   ✓ Robusta UI sink enabled<br>
+   ✓ <a href="https://platform.robusta.dev/signup">Robusta SaaS account</a> (free or paid)<br>
    ✓ Robusta version 0.22.0 or higher
    </div>
 

docs/configuration/holmesgpt/main-features.rst

@@ -6,55 +6,12 @@ Robusta integrates `HolmesGPT <https://github.com/robusta-dev/holmesgpt>`_ to pr
 See HolmesGPT in Action
 -----------------------
 
-.. tab-set::
-
-   .. tab-item:: AWS Troubleshooting
-
-      .. raw:: html
-
-         <div style="position: relative; padding-bottom: 56.25%; height: 0;">
-            <iframe src="https://www.loom.com/embed/2e5e3a259a5c41018914c9abd8429f00"
-                    frameborder="0"
-                    webkitallowfullscreen
-                    mozallowfullscreen
-                    allowfullscreen
-                    style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;">
-            </iframe>
-         </div>
-
-   .. tab-item:: CPU Spike Investigation
-
-      .. raw:: html
-
-         <div style="position: relative; padding-bottom: 56.25%; height: 0;">
-            <iframe src="https://www.loom.com/embed/b63f0eba0fd74750929f37c16b3fca3b"
-                    frameborder="0"
-                    webkitallowfullscreen
-                    mozallowfullscreen
-                    allowfullscreen
-                    style="position: absolute; top: 0; left: 0; width: 100%; height: 100%;">
-            </iframe>
-         </div>
-
-How to Use It
--------------
-
-**In Robusta UI**
-   Click the ``Root Cause`` tab on any alert to see the AI investigation.
-
-   .. image:: /images/ai-root-causeanalysis.png
-       :width: 600px
-
-**Via @holmes in Slack**
-   Ask natural language questions about your clusters:
-
-   * ``@holmes what apps are crashing in prod-cluster?``
-   * ``@holmes why is my alert firing on staging?``
-   * ``@holmes investigate high memory usage in dev-cluster``
+See demos and up-to-date videos on the `Robusta homepage <https://home.robusta.dev/>`_.
 
 Next Steps
 ----------
 
+* `Sign up for Robusta <https://platform.robusta.dev/signup>`_ - Get started with the full platform
 * :doc:`getting-started` - Set up HolmesGPT in 5 minutes
 * `Available Data Sources <https://holmesgpt.dev/data-sources/builtin-toolsets/>`_ - See all supported integrations (use Robusta Helm Chart configuration method)
 * `Helm Configuration Reference <https://holmesgpt.dev/reference/helm-configuration/>`_ - Advanced HolmesGPT settings for Robusta deployments