Include AI usage policy in application guidelines (#12)

Co-authored-by: Subhramit Basu <subhramit.bb@live.in>

Author: koppor

_posts/2025-12-24-application.md

@@ -27,10 +27,18 @@ For a successful application to JabRef, provide below information and make sure
 Please ensure that you include everything mentioned at [Elements of a Quality Proposal](https://google.github.io/gsocguides/student/writing-a-proposal#elements-of-a-quality-proposal).
 In the following a higher-level structure is given.
 
-Most importantly, your proposal should make the impression that you know what you are talking about and that you have the sufficient knowledge, interest and energy to finish the project.
+## AI usage
+
+See JabRef's [AI_USAGE_POLICY.md](https://github.com/JabRef/jabref/blob/main/AI_USAGE_POLICY.md) for the expectations we have from candidates regarding AI usage.
+We only consider candidates who can think and take decisions organically, in spirit of Software Engineering as a holistic process and not just "programming". Thus, interested candidates are expected to adhere to the policy.
+If a proposal is predominantly generated by AI, it will be rejected.
+
+All in all, your proposal should reflect that you know what you are talking about and that you have the sufficient knowledge, interest and energy to both work on the project and finish it.
 
 ## Personal Information
 
+Include following personal information:
+
 - Full Name
 - Email and GitHub username
 - Your first language
@@ -76,6 +84,8 @@ What cool things would be demonstrated?
 
 ## Biographical information
 
+Include following information:
+
 - Background
 - Do you have any other commitments during GSoC? Exams, jobs, vacation, ...
 - Did you participate in GSoC or any other project before?