concept-synthesis — From Raw Stubs to Intellectual Map Convention: see conventions/quality.md for back-link enforcement and quote-fidelity requirements. Convention: see brain-filing-rules.md — output files under per the primary-subject rule. What this solves Many ingestion pipelines (signal-detector, idea-ingest, voice-note-ingest) create a concept page for every idea mentioned. Over months this produces: - Thousands of stub pages, many duplicates or near-duplicates - Timeline entries that repeat the same source across multiple concept pages - No synthesis — just "the user mentioned X on this…