Stream Optimizer

Analyzes a minds stream or focus items and returns a structured pruning list that reduces cognitive load by identifying stale, low-salience, or stagnant entries. Accepts a single input stream_json, a string containing a JSON array of items with key, text, salience, and age fields that must be parsed as authoritative source data. The tools output must strictly validate against the system-provided structured output schema that is auto-produced and not supplied here.