fix: align weight range -10/10/0.01 across BarInput defaults, MixCard and StyleMixerPanel

ui/src/components/BarInput.tsx

@@ -27,9 +27,9 @@ interface Props {
 export default function BarInput({
   value,
   onChange,
-  min = 0,
-  max = 1,
-  step = 0.05,
+  min = -10,
+  max = 10,
+  step = 0.01,
   pixelsPerStep = 2,
   width = 72,
   decimals = 2,

ui/src/components/MixCard.tsx

@@ -359,9 +359,9 @@ export default function MixCard({ mix, styles, isActive, isDirty, onActivate, on
               <BarInput
                 value={entry.weight}
                 onChange={(v) => updateEntry(i, { weight: v })}
-                min={0}
-                max={1}
-                step={0.05}
+                min={-10}
+                max={10}
+                step={0.01}
                 width={64}
               />
 

ui/src/components/StyleMixerPanel.tsx

@@ -291,9 +291,9 @@ export default function StyleMixerPanel() {
                           <BarInput
                             value={entry.weight}
                             onChange={(v) => updateCurrentMixEntry(entry.style_id, { weight: v }, { silent: true })}
-                            min={0}
-                            max={1}
-                            step={0.05}
+                            min={-10}
+                            max={10}
+                            step={0.01}
                             width="100%"
                           />
                         </div>