# Summary n008: CryoSleep remaining NA and spend mix

Added CryoSleep NA→True when spend=0 plus LuxuryShare and FoodShopShare in features.py; LightGBM unchanged. Official validation score 0.81886 (n=1739, sem=0.00924) vs parent 0.8166 (Δ+0.00226, within no_change band). Worker quick-set: 0.80748 vs untouched parent 0.80417 (+0.00331).

- official score: 0.8189 (delta vs parent 0.0023, vs best 0.00115)
- verdict: no_change
- commit: fc997188
- claim check: consistent — Handoff correctly states official validation was not measured by the worker. Quick numbers (parent 0.80417, shipped 0.80748, cryo-only 0.80562, shares-only 0.80722) match the progress log. Official harness score is 0.81886 vs parent 0.8166—no conflicting official claim.

## Git log
```
fc99718 Fill remaining CryoSleep NA as True on zero spend; add luxury and food spend shares.
```
```
src/features.py | 38 ++++++++++++++++++++++++++++++++------
 1 file changed, 32 insertions(+), 6 deletions(-)
```