fix(#47): 'adaptive' mitigation no longer silently becomes 'zne' - #99
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OptimizerConfig defaults mitigation='adaptive' but QCompiler.optimize() converted it to 'zne' before passing to AdaptiveErrorMitigation, making the 'adaptive' option unreachable from the pipeline. Fix: Make AdaptiveErrorMitigation.create_plan() accept 'adaptive' as a method. Internally, 'adaptive' resolves to ZNE with adaptive shot allocation. The MitigationPlan.method field preserves 'adaptive', and MitigationResult.method reflects the original method. Remove the silent conversion in transpiler.py.
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Fixes the silent conversion of
mitigation='adaptive'to'zne'in QCompiler.optimize(). Now AdaptiveErrorMitigation accepts 'adaptive' as a first-class method that resolves to ZNE with adaptive shot allocation. MitigationPlan and MitigationResult preserve the original method string. 3 regression tests added. All 344 tests pass.