rename testFlowHaltIfEnsureRequirementNotMet to actual coverage

[thedavidmeister]

Summary

testFlowHaltIfEnsureRequirementNotMet mocks eval2 to revert with a generic string. It pins generic interpreter-revert propagation, not the ensure opcode in isolation — any interpreter revert (out-of-gas, stack underflow, runtime opcode error, failed ensure) takes the same path through flow().

Renamed to testFlowRevertPropagatesFromInterpreter and replaced the misleading NatSpec line with one that names the actual coverage.

Closes #423.

Test plan

• renamed test passes

🤖 Generated with Claude Code

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📥 Commits

Reviewing files that changed from the base of the PR and between ceaea3c and b625105.

📒 Files selected for processing (1)

• test/src/concrete/Flow.transfer.t.sol

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch 2026-05-07-issue-423-rename-ensure-test

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