Wrong order / negative duration when parsing cross-year date ranges like "from November 15 to January 5"

Wrong order / negative duration when parsing cross-year date ranges like "from November 15 to January 5": a task in MiMo-V2.6-RL-oss: Agentic RL Environments (MiMo RL release). I'm using the date-time recognizer to parse free-form date ranges. When the user writes a range without explicit years…