Update complexity analyzer config

Score thresholds for complexity tier classification. All values must satisfy 0 < simple_medium < medium_complex < complex_reasoning < 1.

Editable keyword lists used by the complexity analyzer. Only the four user-facing dimensions are exposed; reasoning_keywords entries drive the reasoning tier override. Matching is normalized to lowercase and duplicates are removed on save.

Score thresholds for complexity tier classification. All values must satisfy 0 < simple_medium < medium_complex < complex_reasoning < 1.

Editable keyword lists used by the complexity analyzer. Only the four user-facing dimensions are exposed; reasoning_keywords entries drive the reasoning tier override. Matching is normalized to lowercase and duplicates are removed on save.