Substrate stable2603-4, remove old pallet-contracts support.

[Neopallium]

changelog

other

• Changed the ExistentialDeposit of all runtimes to lowest non-zero value.
• Update to Substrate stable2603-4 release.
• Remove support for the old Ink! Smart Contracts (pallet_contracts). Smart contracts should now use the Revive pallet.

data migration

• Fix version check in Relayer migration.

[Copilot]

Pull request overview

This PR updates the Polymesh node to the polymesh-v8-stable2603-4 polkadot-sdk branch and removes legacy pallet-contracts / polymesh-contracts support across runtimes, chain specs, weights, and integration testing infrastructure.

Changes:

• Bump polkadot-sdk dependency branches to polymesh-v8-stable2603-4.
• Remove the polymesh-contracts pallet, its chain extension, benchmarks, and associated runtime/config/weights/genesis wiring.
• Adjust runtimes/configs/tests to reflect the removal (including ED changes and related cleanup).

Reviewed changes

Copilot reviewed 40 out of 49 changed files in this pull request and generated 3 comments.

Show a summary per file

File	Description
Cargo.toml	Updates polkadot-sdk branches and removes pallets/contracts + polymesh-contracts workspace/deps.
src/data/contracts_call_whitelist.txt	Removes legacy informational whitelist mapping (file deleted).
src/data/contracts_call_whitelist.json	Removes legacy contracts call whitelist data (file deleted).
src/chain_spec/ci_runtime.rs	Drops polymeshContracts genesis config entry/import.
src/chain_spec/common.rs	Removes polymesh_contracts_genesis_config + whitelist/wasm helpers and related imports.
src/chain_spec/develop_runtime.rs	Drops polymeshContracts genesis config entry/import.
src/chain_spec/mainnet_runtime.rs	Drops polymeshContracts genesis config entry/import.
src/chain_spec/testnet_runtime.rs	Drops polymeshContracts genesis config entry/import.
pallets/contracts/Cargo.toml	Removes the polymesh-contracts pallet crate manifest (file deleted).
pallets/contracts/src/benchmarking.rs	Removes polymesh-contracts benchmarking code (file deleted).
pallets/contracts/src/chain_extension.rs	Removes Polymesh contracts chain extension implementation (file deleted).
pallets/contracts/src/lib.rs	Removes polymesh-contracts pallet implementation (file deleted).
pallets/relayer/src/lib.rs	Fixes relayer migration guard to run only when on-chain version is behind in-code version.
pallets/runtime/common/src/runtime.rs	Removes pallet-contracts / polymesh-contracts runtime config + runtime API wiring; keeps pallet_revive.
pallets/runtime/develop/Cargo.toml	Removes pallet-contracts / polymesh-contracts deps and benchmark/std feature wiring.
pallets/runtime/develop/src/runtime.rs	Removes contracts-related parameter types and bench entries; cleans up ED benchmark constant.
pallets/runtime/mainnet/Cargo.toml	Removes pallet-contracts / polymesh-contracts deps and benchmark/std feature wiring.
pallets/runtime/mainnet/src/runtime.rs	Removes contracts-related parameter types and sets ED to 1u128.
pallets/runtime/testnet/Cargo.toml	Removes pallet-contracts / polymesh-contracts deps and benchmark/std feature wiring.
pallets/runtime/testnet/src/runtime.rs	Removes contracts-related parameter types and sets ED to 1u128.
pallets/runtime/tests/Cargo.toml	Removes pallet-contracts / polymesh-contracts deps and std feature wiring for the tests runtime.
pallets/runtime/tests/src/lib.rs	Removes contracts_test module from the runtime tests crate.
pallets/runtime/tests/src/storage.rs	Removes contracts pallets from the test runtime and removes contracts-specific parameter types; adjusts ED.
pallets/weights/Cargo.toml	Removes pallet-contracts / polymesh-contracts deps and std feature wiring from the weights crate.
pallets/weights/src/lib.rs	Removes module exports for contracts weight files.
pallets/weights/src/pallet_contracts.rs	Removes autogenerated weights for pallet_contracts (file deleted).
pallets/weights/src/polymesh_contracts.rs	Removes autogenerated weights for polymesh_contracts (file deleted).
integration/contracts/rust-toolchain.toml	Removes contracts-specific Rust toolchain pin (file deleted).
integration/contracts/call_runtime-tester/.gitignore	Removes contract test project ignore file (file deleted).
integration/contracts/call_runtime-tester/Cargo.toml	Removes contract test project manifest (file deleted).
integration/contracts/call_runtime-tester/lib.rs	Removes contract test project source (file deleted).
integration/contracts/contract-revert/.gitignore	Removes contract revert test project ignore file (file deleted).
integration/contracts/contract-revert/Cargo.lock	Removes contract revert test project lockfile (file deleted).
integration/contracts/contract-revert/Cargo.toml	Removes contract revert test project manifest (file deleted).
integration/contracts/contract-revert/lib.rs	Removes contract revert test project source (file deleted).
integration/src/lib.rs	Removes helper for reading Contracts::Instantiated event (contract deployment helper).
integration/tests/contract_permissions.rs	Removes integration test for contract permissions/identity swapping (file deleted).
integration/tests/contract_revert.contract	Removes compiled contract bundle used by integration tests (file deleted).
integration/tests/contract_revert.json	Removes contract metadata used by integration tests (file deleted).
integration/tests/contract_revert.rs	Removes integration test for reverted constructor behavior (file deleted).

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