Native deploy, upgrade, and Squads multisig integration#68

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L0STE wants to merge 38 commits intomasterfrom

feat/multisig-deploy

Commits on Mar 21, 2026

Commits on Mar 22, 2026

feat: add --upgrade flag to deploy command (wiring only)
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feat: add set_upgrade_authority shell-out for multisig authority transfer
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feat: add program_exists_on_chain RPC check
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refactor: restructure deploy into 4 code paths (deploy/upgrade × direct/multisig)
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feat: resolve cluster shorthands (devnet, testnet, localnet, mainnet-beta) to RPC URLs
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fix: correct VaultTransaction offsets, resolve cluster URL consistently, fix clippy
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docs: add native deploy with priority fees design spec
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docs: add native deploy implementation plan
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refactor: extract rpc.rs from multisig.rs
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feat: add priority fee, confirm_transaction, rent exemption RPC helpers
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refactor: extract bpf_loader.rs constants and PDA from multisig.rs
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feat: add BPF Loader instruction builders and ComputeBudget instruction
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feat: add native buffer upload, deploy, upgrade, and authority orchestrators
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refactor: replace multisig shell-outs with native bpf_loader calls, add priority fee
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feat: native deploy/upgrade with priority fees and pre-deploy validation
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fix: add HTTP timeouts, retry logic, tx confirmation, and proper error returns
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