v1.3.0

Changed

• The built-in model defaults move to the 5.5 generation: the utility tier
  runs on Claude Haiku 5.5 (eu.anthropic.claude-haiku-5-5) and the reasoning
  tier on Claude Sonnet 5.5 (eu.anthropic.claude-sonnet-5-5). Installs that
  set MEMRAIN_UTILITY_MODEL / MEMRAIN_FACTS_MODEL keep what they set. A
  fresh install needs model access to both 5.5 models in its Bedrock account;
  the IAM policy already allows them.