• 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 - library call #14129
• starknet_os: initial test, measure call contract resources #14128
• blockifier_test_utils: add option to deploy from zero in test accounts #14258
• starknet_os_flow_tests: helper function to declare explicit classes #14257
• starknet_os: os resources test - create fixed deployable account #14173
• main

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PR Summary

Medium Risk
Touches fee/gas constants, versioned OS resource tables, and OS program hash—changes affect billing and proving compatibility, though scope is test harness and constant alignment.

Overview
Adds MetaTxV0 to the OS syscall resource regression harness so its constant and calldata-linear costs are measured like Deploy.

The measuring account contract now invokes meta_tx_v0_syscall twice (empty vs one-element calldata). MetaTxV0 is removed from the unmeasurable syscall list and registered with linear factor 1. The stable deploy target’s __execute__ (and related entry points) take variable Span<felt252> so the inner meta-tx call can exercise calldata scaling; its Sierra/CASM artifacts are regenerated. Deploy syscall salts in the test contract change from 3 to 1 for deterministic addresses.

OS constants and blockifier 0.14.4 versioned constants are bumped: META_TX_V0_GAS_COST 167950 → 168550, MetaTxV0 constant n_steps 1301 → 1307, and program_hash.json OS hash updates. meta_tx syscall tests refresh expected VM steps and gas. Inner-call subtraction in the OS resources test zeroes n_memory_holes on deducted inner resources until the logger supports holes.

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Artifacts upload workflows:

• Started at 2026-06-07T07:40:26Z
• Started at 2026-06-07T07:50:08Z