[D] Extracting time-aware commitment signals from conversation history — implementation approaches?

Working on a system that saves key context from multi-model conversations (across GPT, Gemini, Grok, Deepseek, Claude) to a persistent. The memory layer is working - the interesting problem I'm now looking at is extracting "commitments" from unstructured conversation and attaching temporal context to them. The goal is session-triggered proactive recall: when a user logs in, the system surfaces relevant unresolved commitments from previous sessions without being prompted.