fix(#42): PEC and CDR now warn users they are placeholder implementations - #93
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…ions PEC and CDR methods returned results without indicating they are placeholders, misleading users into trusting inaccurate values. PEC returned raw_values[0] with no error cancellation, and CDR applied simple linear extrapolation rather than true Clifford data regression. Fix: Add placeholder=True field to MitigationResult. PEC and CDR results now set placeholder=True and emit UserWarning explaining the limitations. ZNE results remain placeholder=False with no warning. All 316 tests pass.
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Bug Fix
PEC and CDR mitigation methods returned results without indicating they are placeholders, misleading users into trusting inaccurate values.
Changes:
All 316 tests pass.