New /difficulty endpoint returns word difficulty scores (0.0-1.0). New /rhyme endpoint uses CMU phoneme tail matching to find rhyming words, sorted by frequency. Adds cmu_tail column migration with batch population at startup, and index for efficient reverse lookups. Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
16 KiB
16 KiB