starknet_os: resources test - l1 handler

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• starknet_os: resources test - l1 handler #14417 👈 (View in Graphite)
• starknet_os: resources test - deploy account #14416
• starknet_os: resources test - declare #14415
• starknet_os: os resources test - invoke tx constant factor #14146 : 1 other dependent PR (#14147 )
• starknet_os: os resources test - extract setup_test_builder #14145
• starknet_os: os resources test - add secp syscalls #14144 : 1 other dependent PR (#14255 )
• starknet_os: os resources test - add send_message_to_l1 #14143 : 1 other dependent PR (#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
• 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
Changes versioned OS resource constants used for L1 handler gas accounting; incorrect values would skew fees/limits even though the change is test-driven measurement.

Overview
Extends the OS execute_txs_inner resource regression test to cover L1 handler transactions (removing the prior TODO), using the same pattern as invoke/deploy: two minimal handler txs with different calldata lengths to derive constant OS overhead and an unscaled calldata linear factor.

The measured L1Handler constant n_steps in blockifier_versioned_constants_0_14_4.json is updated 1315 → 1329, with the 0.14.3→0.14.4 constants diff regression file adjusted accordingly. test_l1_handler expected total L2 gas snapshots are bumped by 1400 (KZG and non-KZG) to match the revised OS resource accounting.

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Reviewable status: 0 of 4 files reviewed, 1 unresolved discussion (waiting on Yoni-Starkware).