v0.37.0 — Portuguese/Spanish AI-cliche dictionaries, contrast connectors kept

Portuguese and Spanish

• New Portuguese AI-cliche list (openers, hedges, stock phrases; keys keep
  their preposition so government is preserved) and extended Spanish list.
  Benchmark edits per article: pt 6 → 17, es 14 → 18.

All languages

• Contrastive connectors are never dropped ("However", "Однако",
  "No entanto") — only replaced by another contrastive connector; dropping them
  lost meaning. Additive/concluding connectors may still be dropped.
• Spanish colloquial "Total," removed from replacements.