Add METRICS-METHODOLOGY.md documenting the theoretical frameworks (SEQUAL, OntoClean, OOPS!, OntoQA, FCA, DSL principles) adapted for two-layer evaluation (LLM-Eval + deterministic aggregation) across five collection concerns: redundancy, coverage, coherence, consistency, and granularity balance. Extend INFRA-TASKS.md with assignment assessment (tasks 4-7), per-concept metrics (tasks 8-12), and collection-level metrics (tasks 13-19). Add roadmap/infospace-tooling/PLAN.md defining terminology (infospace, topic, discipline, entity, evaluation, viability) and a three-stage implementation plan: Stage 1 platform additions, Stage 2 infospace tooling layer, Stage 3 example revision. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>