LLM_OPTS.maxTokens 8192 → 1600, LLM_REFINE 6144 → 1800, Step 4 master draft 8192 → 1600. Added explicit word-count constraint to STEP4_MASTER_DRAFT prompt: HARD LIMIT 800-1100 words. Root cause: no token ceiling → fo-blog-v6 produced 4000-5000w articles. Generated-by label updated to fo-blog-engine-v6-length-fix.