add custom workflow controls

Signed-off-by: Ender Demirkaya <enderd@uber.com>

Author: demirkayaender

blog/2026-01-13-cadence-in-2025/ new-history-page.png

@@ -93,15 +93,15 @@ Another area we have been focusing on was user education. This is needed for bot
 
 ## Cadence Web v4
 
-![multi-cluster-comparison.png](../2025-04-11-announcing-cadence-web-v4/multi-cluster-comparison.png)
+![cadence-web-v4.png](./cadence-web-v4.png)
 
 Earlier in the year, we released [cadence-web v4](https://cadenceworkflow.io/blog/2025/04/11/2025-04-11-announcing-cadence-web-v4/announcing-cadence-web-v4). It was a complete rewrite from the previous version. We migrated from Vue.js to React, completely redesigned the UI, added multi environment support, and improved the performance significantly. 
 
 With the new changes, extending cadence-web became much simpler as you can see with the changes mentioned below. 
 
 ## New History Page
 
-![new-history.png](./new-history.png)
+![new-history-page.png](./new-history-page.png)
 Meet the new Workflow History page in the Cadence UI! It offers significant enhancements in performance, visibility, and navigation. Key improvements include much faster loading, color-coded events, and a new navigation bar, making it much simpler to locate workflow failures and stuck activities.
 
 ## Workflow Actions in Cadence-Web
@@ -123,6 +123,13 @@ There’s a codelab and the tutorial video available for this feature if you’d
 ![visibility-autocomplete.png](./visibility-autocomplete.png)
 Cadence provides a simple SQL language to filter and list workflows. However, it’s quite possible to forget about the keywords and the syntax. In the past, you would need to visit our wikis to remember what they were to complete your query. Now we provide an autocomplete directly in the query field to help you remember\!
 
+## Custom Workflow Controls
+
+![custom-workflow-controls.png](./custom-workflow-controls.png)
+A very common case for some domains is to have separate documentation for their domains and workflows where the documentation describes what workflow to start or signal. Then the user would copy paste the command and run against CLI. This could be for triggering a large data pipeline, training a new AI model, starting an experiment with new parameters, starting an oncall diagnostics, executing a runbook action. You decide. Cadence will allow you to take these actions directly from your documentation. 
+
+Currently this is supported in workflow queries but this will be extended to other areas. It’s the familiar markdown format with an extension to support adding custom start and signal buttons. It’s implemented in a secure way as it doesn’t allow running javascript code inside the markdown doc. Be on the lookout for the codelab for this feature!
+
 ## What's Coming in 2026?
 
 Thanks to past investments in building a solid foundation for Cadence, we are switching our focus to the following areas: