Done! I've written a haiku about autumn to `./output/haiku.md` with:

✓ **5-7-5 syllable structure** verified
✓ **Kigo (seasonal reference):** "crimson leaves" evokes autumn's visual signature
✓ **Juxtaposition/insight:** The collision between visual beauty (colored leaves) and sonic silence (birds departing), ending with the paradox of an empty sky that "waits"—suggesting the transience central to wabi-sabi aesthetics

The haiku meditates on autumn as a moment of threshold between seasons, where endings and beginnings coexist in silence.