Add code ownership script for per-section contributor analysis

[joshuacolvin0]

Co-Authored-By: Claude Opus 4.6 noreply@anthropic.com

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 29.35%. Comparing base (f9004e9) to head (cb62036).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4475      +/-   ##
==========================================
- Coverage   32.92%   29.35%   -3.57%     
==========================================
  Files         493      493              
  Lines       58294    58294              
==========================================
- Hits        19193    17115    -2078     
- Misses      35768    38090    +2322     
+ Partials     3333     3089     -244     

[github-actions]

❌ 52 Tests Failed:

Tests completed	Failed	Passed	Skipped
4240	52	4188	0

View the top 3 failed tests by shortest run time

TestBatchPosterDelayBufferDisabled

Stack Traces | -0.000s run time

... [CONTENT TRUNCATED: Keeping last 20 lines]
TRACE[03-06|01:13:57.109] Removing unpayable queued transactions   count=0
TRACE[03-06|01:13:57.109] Promoting queued transactions            count=1
DEBUG[03-06|01:13:57.109] Served eth_unsubscribe                   reqid=395  duration="11.772µs"
TRACE[03-06|01:13:57.108] Handled RPC response                     reqid=1304 duration="1.122µs"
TRACE[03-06|01:13:57.108] Handled RPC response                     reqid=1030 duration="1.212µs"
TRACE[03-06|01:13:57.108] Handled RPC response                     reqid=5877 duration="1.253µs"
WARN [03-06|01:13:57.108] Served eth_getTransactionReceipt         reqid=7    duration="15.59µs"    err="transaction indexing is in progress"    errdata="\"transaction indexing is in progress\""
TRACE[03-06|01:13:57.109] Handled RPC response                     reqid=395  duration="2.354µs"
TRACE[03-06|01:13:57.109] Handled RPC response                     reqid=7    duration="1.053µs"
TRACE[03-06|01:13:57.108] Inserting block without sethead          hash=cae9ab..444dab                   number=30
DEBUG[03-06|01:13:57.107] Served eth_getTransactionReceipt         reqid=27   duration="238.533µs"
DEBUG[03-06|01:13:57.109] Pushed sync data from consensus to execution synced=true  maxMessageCount=24  updatedAt=2026-03-06T01:13:57+0000 hasProgressMap=false
DEBUG[03-06|01:13:57.108] Served eth_maxPriorityFeePerGas          reqid=267  duration="112.459µs"
TRACE[03-06|01:13:57.109] Handled RPC response                     reqid=27   duration="1.623µs"
DEBUG[03-06|01:13:57.107] Served eth_getBlockByHash                reqid=2141 duration="59.572µs"
TRACE[03-06|01:13:57.109] Handled RPC response                     reqid=3045 duration="1.864µs"
TRACE[03-06|01:13:57.109] Handled RPC response                     reqid=363  duration="1.223µs"
DEBUG[03-06|01:13:57.109] Reinjecting stale transactions           count=0
DEBUG[03-06|01:13:57.109] Executing EVM call finished              runtime="160.712µs"
DEBUG[03-06|01:13:57.109] Served eth_call                          reqid=1032 duration="206.497µs"

TestBatchPosterPostsReportOnlyBatchAfterMaxEmptyBatchDelay

Stack Traces | -0.000s run time

... [CONTENT TRUNCATED: Keeping last 20 lines]
TRACE[03-06|01:13:54.646] Handled RPC response                     reqid=4300 duration="2.584µs"
DEBUG[03-06|01:13:54.644] Served eth_blockNumber                   reqid=2790 duration="25.628µs"
INFO [03-06|01:13:54.647] Updated payload                          id=0x03e64ba846d7d7b4 number=16  hash=48cc84..eac1ce                   txs=1   withdrawals=0 gas=4,235,498  fees=4.235498e-06   root=120419..7263f0 elapsed=1.067ms
TRACE[03-06|01:13:54.647] Engine API request received              method=NewPayload                    number=16  hash=48cc84..eac1ce
INFO [03-06|01:13:54.647] Stopping work on payload                 id=0x03e64ba846d7d7b4 reason=delivery
DEBUG[03-06|01:13:54.647] Finality not supported, not pushing finality data to execution
DEBUG[03-06|01:13:54.647] Finality not supported, not pushing finality data to execution
TRACE[03-06|01:13:54.647] Inserting block without sethead          hash=48cc84..eac1ce                   number=16
DEBUG[03-06|01:13:54.647] Executing EVM call finished              runtime="212.149µs"
DEBUG[03-06|01:13:54.647] Served eth_call                          reqid=651  duration="275.948µs"
TRACE[03-06|01:13:54.647] Handled RPC response                     reqid=1168 duration="1.553µs"
TRACE[03-06|01:13:54.644] Handled RPC response                     reqid=31   duration="2.765µs"
DEBUG[03-06|01:13:54.647] Served eth_getTransactionCount           reqid=475  duration="74.459µs"
DEBUG[03-06|01:13:54.647] Finality not supported, not pushing finality data to execution
DEBUG[03-06|01:13:54.647] Served eth_maxPriorityFeePerGas          reqid=652  duration="436.897µs"
DEBUG[03-06|01:13:54.644] Served eth_call                          reqid=1112 duration=3.553166ms
TRACE[03-06|01:13:54.644] Handled RPC response                     reqid=1965 duration="1.844µs"
TRACE[03-06|01:13:54.647] Handled RPC response                     reqid=1966 duration="6.101µs"
DEBUG[03-06|01:13:54.647] Pushed sync data from consensus to execution synced=true  maxMessageCount=25  updatedAt=2026-03-06T01:13:54+0000 hasProgressMap=false
DEBUG[03-06|01:13:54.642] RPC server shutting down

TestBlockValidatorSimpleOnchainUpgradeArbOs

Stack Traces | -0.000s run time

=== RUN   TestBlockValidatorSimpleOnchainUpgradeArbOs
=== PAUSE TestBlockValidatorSimpleOnchainUpgradeArbOs

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