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[WIP] Fix midpoint algorithm edge cases for azpos lexicographic positioning - #1

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smiggleworth with Copilot wants to merge 6 commits into
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copilot/vscode1753362836612
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[WIP] Fix midpoint algorithm edge cases for azpos lexicographic positioning#1
smiggleworth with Copilot wants to merge 6 commits into
mainfrom
copilot/vscode1753362836612

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Copilot AI commented Jul 24, 2025

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  • Analyze failing tests and understand root cause
  • Identify that midpoint("az", "bz") fails due to recursion reaching invalid state midpoint("z", "z")
  • Identify that needsRebalance("aaaaaaaaaaaaaaaaaaaaaaaay", "aaaaaaaaaaaaaaaaaaaaaaaaz") expects true but returns false
  • Fix midpoint function to handle adjacent first characters without invalid recursion
  • Ensure needsRebalance correctly identifies edge cases where midpoint should fail
  • Test fixes to ensure all 36 tests pass
  • Verify no regressions in existing functionality

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