🏛️ Multi-Sig Governance: Quorum Threshold Checker for WASM Upgrades (Issue #595) - #660
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Sadeequ merged 4 commits intoJul 27, 2026
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Add N-of-M multi-sig authorization for WASM bytecode upgrades: - GovernanceConfig with configurable quorum_threshold stored in instance storage - verify_upgrade_quorum() checks collected signature weight against threshold - propose_upgrade() validates quorum at proposal time, stores signer list - execute_upgrade() re-verifies quorum at execution time (prevents signer-removal race) - Emit GV_UPG_PROPOSED event on proposal registration - Clean up governance proposal record on cancel/execute
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Summary\n- Implements weighted N-of-M multi-sig authorization for WASM upgrades.\n- Tracks signer weights and quorum threshold in storage.\n- Aborts upgrade if collected signature weight is below the configured threshold.\n- Emits GV_UPG_PRO (GovernanceUpgradeProposedEvent) when a proposal is registered.\n- Adds public APIs: set_multisig_config, get_multisig_config, set_signer_weight, get_signer_weight.\n\nTesting & Notes\n- Proposal and execution both re-validate quorum (legacy count-based + new weight-based).\n- Admin has default weight 1 if not explicitly set.\n- Duplicate signer entries are deduplicated; weight arithmetic uses checked_add().\n\n Closes #595