ci: use shared npm-publish action

[dev-jodee]

Summary

• Replace the inline pack / tarball-guard / npm publish steps in publish-typescript.yml with the shared npm-publish composite action, mirroring how publish-rust.yml uses the shared cargo-publish action
• The workflow still checks out, installs, generates clients, and builds; the action handles resolve → pack → validate → version-check → publish, and feeds version/tag back to the tag/release steps
• Net: -93/+18 lines in the workflow, no behavior change to tagging or release creation

Test Plan

• Dry-run dispatched from a hotfix/* branch (temporary 0.3.1 bump, since reverted) passed end-to-end: resolve @solana/subscriptions@0.3.1 (tag: latest) → pack → tarball validation → npm publish --dry-run listing dist/index.{js,cjs,d.ts,d.cts} + maps + package.json + LICENSE + README.md; tag/release correctly skipped on dry-run
• Caught and fixed a pipefail bug in the action's tarball validation during testing

Action ref

• Pinned to solana-developers/github-actions/npm-publish@279ffba919ebb53b40c1f7e3b98783888942f666 (merge commit of feat(npm-publish): add npm publish action solana-developers/github-actions#16), matching the bare-SHA pin style used for cargo-publish in publish-rust.yml

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Project	Deployment	Actions	Updated (UTC)
solana-subscriptions-program	Ready	Preview, Comment	Jun 1, 2026 9:11pm

[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	13290	5302	0.000005001	0.000005212	0.000007651
create_plan	97	3436	16936	5464	0.000005001	0.000005218	0.000007732
create_recurring_delegation	29	3553	11055	5160	0.000005001	0.000005206	0.000007580
delete_plan	9	359	359	359	0.000005000	0.000005014	0.000005179
init_subscription_authority	173	6226	21226	9421	0.000005002	0.000005376	0.000009710
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	7944	0.000005002	0.000005317	0.000008972
transfer_fixed	9	5479	9966	7364	0.000005002	0.000005294	0.000008682
transfer_recurring	19	5591	11684	8329	0.000005002	0.000005333	0.000009164
transfer_subscription	10	5838	16299	7493	0.000005002	0.000005299	0.000008746
update_plan	22	424	503	477	0.000005000	0.000005019	0.000005238

Generated: 2026-06-01