feat(program): support Token-2022 transfer fees

[dev-jodee]

Summary

• allow Token-2022 mint close authority, non-transferable, permanent delegate, pausable, and transfer-fee mint extensions through mint validation
• add the mint account to delegated transfer instructions and use TransferChecked so Token-2022 can apply transfer fees
• add LiteSVM coverage for transfer-fee mints and refresh the IDL

Test Plan

• cargo build-sbf
• cargo test -p tests-subscriptions token_2022 -- --nocapture
• cargo test -p tests-subscriptions transfer -- --nocapture
• pnpm --filter @solana/subscriptions build
• push hook: format + lint

[vercel]

The latest updates on your projects. Learn more about Vercel for GitHub.

Project	Deployment	Actions	Updated (UTC)
solana-subscriptions-program	Ready	Preview, Comment	May 26, 2026 6:16pm

[github-actions]

Compute Unit Report

Instruction	Samples	Min CUs	Max CUs	Avg CUs	Est Cost (Low) [SOL]	Est Cost (Med) [SOL]	Est Cost (High) [SOL]
cancel_subscription	22	1720	2030	1919	0.000005000	0.000005076	0.000005959
close_subscription_authority	10	1803	1833	1806	0.000005000	0.000005072	0.000005903
create_fixed_delegation	39	3517	8790	4354	0.000005001	0.000005174	0.000007177
create_plan	97	3436	18449	4908	0.000005001	0.000005196	0.000007454
create_recurring_delegation	27	3550	14084	4945	0.000005001	0.000005197	0.000007472
delete_plan	9	359	359	359	0.000005000	0.000005014	0.000005179
init_subscription_authority	165	4772	21226	9220	0.000005002	0.000005368	0.000009610
resume_subscription	3	1723	1723	1723	0.000005000	0.000005068	0.000005861
revoke_delegation	19	255	519	353	0.000005000	0.000005014	0.000005176
subscribe	32	6485	16985	7663	0.000005002	0.000005306	0.000008831
transfer_fixed	7	5479	9979	6761	0.000005002	0.000005270	0.000008380
transfer_recurring	17	5591	13181	8099	0.000005002	0.000005323	0.000009049
transfer_subscription	10	5799	13338	7493	0.000005002	0.000005299	0.000008746
update_plan	22	424	503	477	0.000005000	0.000005019	0.000005238

Generated: 2026-05-26