warp-core: derive Eq for EdgeRecord (remove edge_record_eq helper)

[flyingrobots]

Follow-up cleanup:

• Derive PartialEq + Eq on EdgeRecord.
• Replace edge_record_eq(a, b) helper usage in tick_patch with idiomatic a == b / a != b.
• Delete the now-unused helper.

Rationale: avoid drift between helper-based equality and the struct definition; keep comparisons single-source-of-truth.

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🔗 Similar Issues

Related Issues

• warp-core: edge reverse index for tick patch replay #152
• WarpTickPatchV1 delta patches + commit hash v2 #149

🔗 Related PRs

#153 - warp-core: policy_id plumbing + edge replay index [closed]

👤 Suggested Assignees

• flyingrobots

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