Cluster Corpus by Theme Workflow Output Heuristics - Cohesion : ≥5 posts, shared centroid, clear register. - Cohesion : 3-4 posts or mixed register. - Cohesion : cluster exists but coherence is weak. - Reject any cluster with <3 posts (below the 3-post floor for real sections). Guardrails 1. Read full post bodies. Titles are marketing; bodies are the beat. 2. Do not force every post into a cluster. Outliers are legitimate. 3. If 30% of corpus doesn't cluster coherently (all cohesion low), emit "corpus too heterogeneous" → Curator abandons section proposals this run. 4. Include rejected cluste…