fix: soft factor scores use 0-1 scale matching the scoring engine

LOW=0.30 / MEDIUM=0.55 / HIGH=0.85 — previously 3/5/8 which clamped
every soft factor to 100 regardless of level chosen.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/pages/supply/NewListing.tsx

@@ -50,7 +50,7 @@ const LEVEL_OPTIONS = [
 ]
 
 const LEVEL_TO_SCORE: Record<string, number | undefined> = {
-  LOW: 3, MEDIUM: 5, HIGH: 8, '': undefined,
+  LOW: 0.30, MEDIUM: 0.55, HIGH: 0.85, '': undefined,
 }
 
 const FIT_OUT_OPTIONS = [