starknet_os: os resources test - library call

[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
• starknet_os: os resources test - measure linear factor, add deploy #14134
• starknet_os: os resources test - library call #14129 👈 (View in Graphite)
• 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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• Started at 2026-05-24T06:50:41Z
• Started at 2026-05-29T14:04:52Z

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PR Summary

Medium Risk
Changes consensus-relevant syscall gas and OS program hashes for 0.14.4; incorrect values could break fee accounting or client proving compatibility.

Overview
Adds LibraryCall to the OS resources regression harness so its overhead is measured end-to-end instead of being skipped.

The measurement contract now invokes library_call_syscall during __execute__, and LibraryCall is removed from the unmeasurable syscall list. Calibrated costs land in 0.14.4 versioned constants (874 OS steps, down from 879) and in Cairo OS constants (LIBRARY_CALL_GAS_COST 88660, down from 89160). Rebuilt Starknet OS artifacts update program_hash.json and the third allowed virtual OS program hash to match the new virtual_os build.

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[Yoni-Starkware]

@Yoni-Starkware reviewed 5 files and all commit messages, and made 1 comment.
Reviewable status: 5 of 6 files reviewed, 1 unresolved discussion (waiting on dorimedini-starkware).

[Yoni-Starkware]

@Yoni-Starkware made 1 comment.
Reviewable status: 5 of 6 files reviewed, 1 unresolved discussion (waiting on dorimedini-starkware).