Per-token trajectory stories for the CBAI sprint's Q3: how emotion-concept
representations evolve across a story's tokens. One shard per story from the
companion corpus (emotion-combined-stories-gemma-4-31b-it), extracted with a
teacher-forced forward pass through google/gemma-4-31b-it (bf16, RIGHT
padding — post-dates the padding-side instrument fix, project TREE Q1.H3.E4).