starknet_os: os resources test - add meta tx

[dorimedini-starkware]

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[dorimedini-starkware]

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• starknet_os: os resources test - add send_message_to_l1 #14143 : 2 dependent PRs (#14144 , #14153 )
• starknet_os: os resources test - add replace_class #14142
• starknet_os: os resources test - support virtual builtins, add sha256 #14141
• starknet_os: define sha256 batch resources constants #14140
• starknet_os: os resources test - add keccak #14139
• starknet_os: os resources test - add 3 more syscalls #14138
• starknet_os: os resources test - remove all fee transfer syscalls #14137
• starknet_os: os resources test - add emit event #14136
• starknet_os: os resources test - add meta tx #14135 👈 (View in Graphite)
• starknet_os: os resources test - measure linear factor, add deploy #14134
• starknet_os: os resources test - create fixed deployable account #14173
• starknet_os: os resources test - library call #14129
• starknet_os: initial test, measure call contract resources #14128
• blockifier_test_utils: add OS resources measurement contract #14126 : 1 other dependent PR (#14127 )
• blockifier: regenerate VC JSONs #14133
• blockifier: raw VC to_string_pretty #14132
• blockifier: raw VC deterministic map order #14131
• blockifier: raw VC serde equivalence test #14130
• main

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[reviewable-StarkWare]

This change is 

[cursor]

PR Summary

Medium Risk
Touches fee/gas constants and versioned OS resource tables used for transaction charging and OS compatibility; changes are test-driven calibration rather than new protocol logic.

Overview
Adds MetaTxV0 to the OS syscall resource regression path: the measurement contract now invokes meta_tx_v0_syscall twice (base and calldata-linear cases), with a zero class-hash early return so nested __execute__ from the syscall does not recurse into other syscalls.

Measured MetaTxV0 OS overhead in blockifier_versioned_constants_0_14_3.json is updated (higher constant steps and Pedersen builtins). OS Cairo META_TX_V0_GAS_COST rises from 167950 to 186850, and program_hash.json reflects a rebuilt OS program.

The flow test drops MetaTxV0 from unmeasurable syscalls, extends invoke calldata for extra_args, and zeros memory holes on subtracted inner-call resources so meta-tx inner execution does not break OsLogger-based subtraction.

^{Reviewed by Cursor Bugbot for commit f30d4c1. Bugbot is set up for automated code reviews on this repo. Configure here.}

[Yoni-Starkware]

@Yoni-Starkware reviewed 1 file and all commit messages, and made 1 comment.
Reviewable status: 1 of 5 files reviewed, 1 unresolved discussion (waiting on dorimedini-starkware).

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crates/blockifier_test_utils/resources/feature_contracts/cairo1/os_resources_test_contract.cairo line 69 at r1 (raw file):

            calldata: array![0, 0, 0, 0].span(),
            signature: array![].span(),
        )

Call the const contract instead, so you could have a base cost without arguments (same comment as the deploy syscall)

Code quote:

        // meta_tx_v0 syscall - base.
        meta_tx_v0_syscall(
            address: self_address,
            entry_point_selector: EXECUTE_FUNCTION_SELECTOR,
            // class hash, address, deployable class hash, extra args len.
            calldata: array![0, 0, 0, 0].span(),
            signature: array![].span(),
        )