fix(calibrate_response_mapper): honor output_pattern when set

[cmgzn]

Problem

CalibrateResponseMapper.parse_output() ignores the output_pattern parameter entirely. The parent class CalibrateQAMapper uses self.output_pattern for regex extraction, but CalibrateResponseMapper overrides parse_output to always return raw_output.strip(), making the parameter a no-op.

Before fix: User sets output_pattern: 'Answer:\\s*(.*)'', gets back full raw text 'Answer: my calibrated response'.

After fix: Regex is applied, correctly extracts 'my calibrated response'.

Fix

When the user provides a custom output_pattern (different from DEFAULT_OUTPUT_PATTERN), apply regex matching. Fall back to the original strip behavior if no custom pattern is set or if regex doesn't match.

Test

mapper = CalibrateResponseMapper(output_pattern=r'Answer:\\s*(.*)')
# Before: parse_output('Answer: foo') → (None, 'Answer: foo')  # BUG
# After:  parse_output('Answer: foo') → (None, 'foo')          # FIXED
# Default behavior (no custom pattern) unchanged

[gemini-code-assist]

Caution

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