feat: ✨ Standardize currency system to HAVE token with Wei-based units

[stiiifff]

Summary

This PR modernizes DataHaven's currency system by standardizing all three runtimes (mainnet, stagenet, testnet) to use Ethereum-compatible Wei-based units with HAVE as the native token name.

Key Changes

🔄 Currency Unit Standardization

• Migrated from decimal-based to Wei-based system (18 decimals)
• Wei units: WEI → KILOWEI → MEGAWEI → GIGAWEI
• HAVE units: MICROHAVE → MILLIHAVE → HAVE → KILOHAVE
• Zero Existential Deposit: Enables dust account support with insecure_zero_ed feature

🏷️ Token Naming

• UNIT → HAVE: Native token renamed to reflect DataHaven branding
• Consistent terminology: All constants, comments, and documentation updated
• Supply factors preserved: Mainnet (100x), Stagenet/Testnet (1x)

⚖️ Block Weights & Gas Configuration

• Solochain-optimized: Updated MAX_POV_SIZE and block weight parameters
• EVM compatibility: Fixed GasLimitPovSizeRatio (u32 → u64) and storage growth ratios
• Proper fee structure: Aligned with Ethereum standards

🧪 Test Updates

• Treasury tests fixed: Updated to handle zero existential deposit behavior
• All tests passing: Currency references updated across all runtime tests
• Storage hub parameters: Updated to use HAVE token terminology

Breaking Changes

⚠️ Currency precision changed from 12 to 18 decimals

• Applications using currency constants must update to new HAVE-based naming
• ExistentialDeposit now 0 (was previously enforced minimum balance)

Runtime Coverage

• ✅ Mainnet runtime (supply factor: 100)
• ✅ Stagenet runtime (supply factor: 1)
• ✅ Testnet runtime (supply factor: 1)
• ✅ Storage hub parameters (runtime params updated)

Technical Details

Fee Structure

pub const TRANSACTION_BYTE_FEE: Balance = 1 * GIGAWEI * SUPPLY_FACTOR;
pub const STORAGE_BYTE_FEE: Balance = 100 * MICROHAVE * SUPPLY_FACTOR;
pub const WEIGHT_FEE: Balance = 50 * KILOWEI * SUPPLY_FACTOR / 4;

Block Configuration

pub const MAXIMUM_BLOCK_WEIGHT: Weight = Weight::from_parts(
    WEIGHT_REF_TIME_PER_SECOND.saturating_mul(2),
    MAX_POV_SIZE as u64,
);

Test Plan

• All runtime builds compile successfully
• All unit tests pass across three runtimes
• Treasury fee handling verified with zero existential deposit
• Storage hub parameter compatibility confirmed
• EVM gas limit calculations validated

Files Modified

27 files changed, 728 insertions(+), 342 deletions(-)

• Runtime lib.rs files (currency module definitions)
• Cargo.toml files (insecure_zero_ed feature)
• Configuration modules (block weights, gas limits)
• Test suites (currency constant references)
• Storage hub runtime parameters

---

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features

  • Introduced a unified currency module with HAVE units (18 decimals), fees, and a deposit helper.
  • Adopted dynamic block weight/length configuration (5 MB blocks) and re-exported gas-to-weight constants.

• Improvements

  • Switched all runtimes and pricing parameters from UNIT/NANO_UNIT to HAVE/GIGAWEI.
  • Updated deposits, fees, and rewards to HAVE-based values across modules (including StorageHub and Snowbridge).
  • Made existential deposit runtime-configurable; enabled zero-ED mode on selected networks.
  • Updated metadata hash and token metadata to reference HAVE (symbol wHAVE, 18 decimals).

[stiiifff]

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Walkthrough

Refactors runtimes to a HAVE-based currency unit system, replaces static existential-deposit constants with parameterized Get types, introduces centralized currency modules and dynamic BlockWeights, updates EVM/gas/fees wiring, adjusts metadata-hash denominations, and migrates tests and configs across mainnet, stagenet, and testnet to the new units and weight model.

Changes

Cohort / File(s)	Summary
Existential Deposit & balances features operator/node/src/command.rs	Replace constant EXISTENTIAL_DEPOSIT with ExistentialDeposit::get() in stagenet benchmark extrinsic path.
Balances feature flag (insecure_zero_ed) operator/runtime/mainnet/Cargo.toml, operator/runtime/stagenet/Cargo.toml, operator/runtime/testnet/Cargo.toml	Enable pallet-balances feature insecure_zero_ed for all networks.
Wasm metadata hash denomination operator/runtime/mainnet/build.rs, operator/runtime/stagenet/build.rs, operator/runtime/testnet/build.rs	Change enable_metadata_hash args from ("UNIT", 12) to ("HAVE", 18) under std+metadata-hash.
Mainnet runtime core config operator/runtime/mainnet/src/lib.rs, operator/runtime/mainnet/src/configs/mod.rs	Add currency module, expose WEIGHT_PER_GAS, define weight/length constants, parameterize ExistentialDeposit, introduce BlockWeights::get(), update HAVE-based fees/units, adjust imports/exports and time constants.
Mainnet tests update operator/runtime/mainnet/tests/common.rs, .../tests/lib.rs, .../tests/native_token_transfer.rs, .../tests/treasury.rs	Switch UNIT/MILLI_UNIT to HAVE/MILLIHAVE; use ExistentialDeposit::get(); update asset metadata (symbol), balances, fees, and assertions; add dead_code allows.
Stagenet runtime core config operator/runtime/stagenet/src/lib.rs, operator/runtime/stagenet/src/configs/mod.rs	Add currency module and weight constants; parameterize ExistentialDeposit; introduce BlockWeights::get(); update HAVE-based economic params, GasLimitPovSizeRatio type u64, EVM wiring.
Stagenet storage-hub params operator/runtime/stagenet/src/configs/runtime_params.rs, operator/runtime/stagenet/src/configs/storagehub/mod.rs	Rename units to HAVE/GIGAWEI; update deposit/pricing constants and docs; replace UNIT multipliers with HAVE.
Stagenet tests update operator/runtime/stagenet/tests/common.rs, .../tests/lib.rs, .../tests/native_token_transfer.rs, .../tests/treasury.rs	Migrate tests to HAVE/MILLIHAVE; use ExistentialDeposit::get(); update metadata (symbol), balances, fees, and assertions; add dead_code allows.
Testnet runtime core config operator/runtime/testnet/src/lib.rs, operator/runtime/testnet/src/configs/mod.rs	Add currency module, expose WEIGHT_PER_GAS, add weight constants and BlockWeights::get(); parameterize ExistentialDeposit; add additional public helpers/types and EVM/Snowbridge wiring; HAVE-based pricing.
Testnet tests update operator/runtime/testnet/tests/common.rs, .../tests/lib.rs, .../tests/native_token_transfer.rs, .../tests/treasury.rs	Replace UNIT with HAVE across balances/fees; use ExistentialDeposit::get(); update metadata (symbol/decimals), assertions, and fee handling; add dead_code allows.

Sequence Diagram(s)

sequenceDiagram
  autonumber
  actor User
  participant Extrinsic
  participant Runtime
  participant Currency as currency module
  participant Weights as BlockWeights
  participant Balances
  participant EVM
  participant Treasury

  User->>Extrinsic: Submit transaction
  Extrinsic->>Runtime: Dispatch call
  Runtime->>Weights: BlockWeights::get()
  Runtime->>Currency: WEIGHT_PER_GAS, fees, units (HAVE)
  alt EVM call
    Runtime->>EVM: Gas price via TransactionPaymentAsGasPrice
    EVM->>Treasury: Base fee portion
  else Substrate call
    Runtime->>Balances: Charge fee (WeightToFee using MILLIHAVE)
    Balances->>Treasury: Fees/tips per DealWithFees
  end
  Runtime->>Balances: Check ExistentialDeposit::get()
  Runtime-->>User: Apply result

Loading

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~45 minutes

Poem

A hare taps keys with nimble cheer,
Swapping UNITs for HAVEs this year.
Weights now dance, deposits “Get!”,
Gas and fees are neatly set.
Blocks grow strong, the tests all pass—
Thump-thump! I sign it with my paw and glass. 🥕🐇

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Review profile: CHILL
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📥 Commits

Reviewing files that changed from the base of the PR and between 1f0cd6d and 9812381.

📒 Files selected for processing (27)

• operator/node/src/command.rs (1 hunks)
• operator/runtime/mainnet/Cargo.toml (1 hunks)
• operator/runtime/mainnet/build.rs (1 hunks)
• operator/runtime/mainnet/src/configs/mod.rs (9 hunks)
• operator/runtime/mainnet/src/lib.rs (4 hunks)
• operator/runtime/mainnet/tests/common.rs (6 hunks)
• operator/runtime/mainnet/tests/lib.rs (2 hunks)
• operator/runtime/mainnet/tests/native_token_transfer.rs (4 hunks)
• operator/runtime/mainnet/tests/treasury.rs (10 hunks)
• operator/runtime/stagenet/Cargo.toml (1 hunks)
• operator/runtime/stagenet/build.rs (1 hunks)
• operator/runtime/stagenet/src/configs/mod.rs (9 hunks)
• operator/runtime/stagenet/src/configs/runtime_params.rs (6 hunks)
• operator/runtime/stagenet/src/configs/storagehub/mod.rs (5 hunks)
• operator/runtime/stagenet/src/lib.rs (7 hunks)
• operator/runtime/stagenet/tests/common.rs (6 hunks)
• operator/runtime/stagenet/tests/lib.rs (2 hunks)
• operator/runtime/stagenet/tests/native_token_transfer.rs (4 hunks)
• operator/runtime/stagenet/tests/treasury.rs (10 hunks)
• operator/runtime/testnet/Cargo.toml (1 hunks)
• operator/runtime/testnet/build.rs (1 hunks)
• operator/runtime/testnet/src/configs/mod.rs (9 hunks)
• operator/runtime/testnet/src/lib.rs (4 hunks)
• operator/runtime/testnet/tests/common.rs (6 hunks)
• operator/runtime/testnet/tests/lib.rs (2 hunks)
• operator/runtime/testnet/tests/native_token_transfer.rs (4 hunks)
• operator/runtime/testnet/tests/treasury.rs (11 hunks)

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[ahmadkaouk]

There seems to be an issue with the benchmarks of the pallet balances after this change

[stiiifff]

@ahmadkaouk Good catch. I will create a separate ticket for this. It will be fixed by paritytech/polkadot-sdk#7379 when we upgrade to Polkadot SDK stable2503.