chore: point repo URLs to solana-foundation org

[dev-jodee]

Summary

• Repo moved from solana-program to solana-foundation GitHub org; swap solana-program/subscriptions → solana-foundation/subscriptions across 10 files
• Updated: Cargo.toml repository, clients/typescript/package.json (homepage/repo/bugs), docs, README, SECURITY.md, audit compare links, release.yml REPO_URL, and on-chain security_txt! URLs in program/src/lib.rs
• Left untouched: ecosystem @solana-program/* npm deps, the solana-program/program-metadata reference (different repo), and dynamic ${{ github.repository }} workflow refs (self-correct)

Test Plan

• grep -rn 'solana-program/subscriptions' . → 0 matches (excluding vendored/generated)
• just build && just integration-test — string-only change, must still pass
• on-chain security_txt URL only takes effect on next program deploy/upgrade

Follow-up ops (out of this PR, human)

• npm trusted publisher (@solana/subscriptions, published) → re-point to new org
• crates.io trusted publisher (subscriptions) → verify/re-point
• Doppler service-identity OIDC trust subject → update to new repo path
• Vercel GitHub App → re-authorize on solana-foundation org (site stays live, git auto-deploy disconnects until reconnected)
• re-run just verify-mainnet if program is mainnet-verified

[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	41	3517	17050	5448	0.000005001	0.000005217	0.000007724
create_plan	97	3436	9449	4769	0.000005001	0.000005190	0.000007384
create_recurring_delegation	29	3555	8055	4798	0.000005001	0.000005191	0.000007399
delete_plan	9	359	359	359	0.000005000	0.000005014	0.000005179
init_subscription_authority	173	4772	21226	9993	0.000005002	0.000005399	0.000009996
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	14009	7851	0.000005002	0.000005314	0.000008925
transfer_fixed	9	5476	12840	7697	0.000005002	0.000005307	0.000008848
transfer_recurring	19	5591	11591	7540	0.000005002	0.000005301	0.000008770
transfer_subscription	10	5799	10338	6893	0.000005002	0.000005275	0.000008446
update_plan	22	424	503	477	0.000005000	0.000005019	0.000005238

Generated: 2026-06-02