Add Radar to Observability subcategory (#4740)

* Add Radar to Observability subcategory

Radar is an open-source Kubernetes visibility tool with topology
visualization, event timeline, Helm management, and built-in MCP
server for AI tools.

Signed-off-by: Nadav Erell <nadaverell@gmail.com>

* Update Radar logo: larger icon, tighter layout

Signed-off-by: Nadav Erell <nadaverell@gmail.com>

---------

Signed-off-by: Nadav Erell <nadaverell@gmail.com>

Author: nadaverell

hosted_logos/radar.svg

@@ -11451,6 +11451,14 @@ landscape:
             logo: quickwit.png
             twitter: https://twitter.com/quickwit_inc
             crunchbase: https://www.crunchbase.com/organization/quickwit-inc
+          - item:
+            name: Radar
+            description: >-
+              Open-source Kubernetes visibility tool with topology visualization, event timeline, Helm management, and built-in MCP server for AI tools.
+            homepage_url: https://github.com/skyhook-io/radar
+            repo_url: https://github.com/skyhook-io/radar
+            logo: radar.svg
+            crunchbase: https://www.crunchbase.com/organization/skyhook-io
           - item:
             name: Replex
             description: >-