Require GSoC applicants to complete onboarding by March 16

src/blog/gsoc-2026.md

@@ -6,19 +6,24 @@
 
 # Typelevel Summer of Code 2026
 
+@:style(bulma-notification bulma-is-danger bulma-is-light)
+  Due to overwhelming participation in GSoC 2026, we are only able to consider proposals from applicants who **complete our [onboarding process][onboarding] by Monday, March 16th**.
+  If you missed this deadline, we appreciate your interest and hope you will apply next year!
+@:@
+
 We are pleased to announce that Typelevel is a Mentoring Organization for [Google Summer of Code 2026][GSoC]! If you are a student, this is a wonderful opportunity to spend your summer working on Scala open source projects with mentorship from Typelevel maintainers, while earning a stipend. You can learn more about what the experience is like in [this blog post][feral-blog] by our 2024 contributor Ching Hian Chew.
 
 Please check out [our project ideas and mentors][ideas] spanning serverless, build tooling, frontend/UIs, systems programming, web assembly, and more. Furthermore, if you have an idea of your own, we would love to hear it: Typelevel members have a wide range of interests and a special fondness for building “at the cutting edge of some incredibly bizarre stuff.”
 
-We look forward to welcoming you to the Typelevel community and we hope that participating in this program will be the beginning of your open source journey. [Applications open on March 16!][apply] Until then, [get started] by [watching our intro presentation][intro] and [making your first contribution][onboard].
+We look forward to welcoming you to the Typelevel community and we hope that participating in this program will be the beginning of your open source journey. [Applications open on March 16!][apply] Until then, [get started] by [watching our intro presentation][intro] and [making your first contribution][onboarding].
 
 [GSoC]: https://summerofcode.withgoogle.com/
 [feral-blog]: gsoc24-going-feral-on-the-cloud.md
 [ideas]: /gsoc/ideas.md
 [apply]: https://summerofcode.withgoogle.com/get-started
 [get started]: /gsoc/README.md#getting-started
 [intro]: https://www.youtube.com/watch?v=oOk9-HQZhRk
-[onboard]: https://github.com/typelevel/gsoc-onboarding
+[onboarding]: https://github.com/typelevel/gsoc-onboarding
 
 ## 2025 recap
 

src/gsoc/README.md

@@ -10,19 +10,24 @@ We work together to develop projects that apply functional programming to challe
 Our community culture embraces curiosity and mentoring and we don’t shy away from experimenting with new and exciting ideas.
 Most of all, we love to make programming joyful and social.
 
+@:style(bulma-notification bulma-is-danger bulma-is-light)
+  Due to overwhelming participation in GSoC 2026, we are only able to consider proposals from applicants who **complete our [onboarding process][onboarding] by Monday, March 16th**.
+  If you missed this deadline, we appreciate your interest and hope you will apply next year!
+@:@
+
 ## Getting Started
 
 We are excited to be a Mentoring Organization in [Google Summer of Code 2026][GSoC]! If you are interested to join Typelevel as a GSoC Contributor, here are some ways to get started:
 
-* Make your first contribution to our [onboarding repository].
+* Make your first contribution to our [onboarding repository][onboarding].
 * Join our [Discord server][invite] and introduce yourself in the [#summer-of-code][invite] channel.
 * Subscribe to the [Google Group][group] for announcements.
 * Check the [calendar] for upcoming events and [videos of past events][videos].
 
 We cannot wait to meet you!
 You can also reach us at gsoc@typelevel.org with any questions.
 
-[onboarding repository]: https://github.com/typelevel/gsoc-onboarding
+[onboarding]: https://github.com/typelevel/gsoc-onboarding
 [group]: https://groups.google.com/a/typelevel.org/g/gsoc-applicants
 [GSoC]: https://summerofcode.withgoogle.com/
 [invite]: https://discord.gg/382Z3w8QTj