web: accent the brand and add the studio's quick gestures

- the brand "Cam", the avatar and the signed-in name follow the theme accent
- double-click a slider track resets that parameter; double-click the photo
  toggles 1:1 and the whole photo on the stage
- `*`, or a recipe chip dragged onto the star, files the look under FAVORITED
- RESET under CREATE clears the draft form, and the button now sits under a
  rule at the foot of the column

docker/frontend/src/ui/RecipeCreatePanel.tsx

@@ -58,10 +58,14 @@ export function RecipeCreatePanel({
   onPreview,
   onSave,
   onExport,
+  resetToken = 0,
 }: {
   currentBase?: BaseFilter;
   current?: ColorAdjustments | null;
   signedIn: boolean;
+  // Bumped by the RESET chip above the form: the draft drops back to the state
+  // the form opened with.
+  resetToken?: number;
   onPreview: (draft: Pick<Recipe, 'baseFilter' | 'adjustments'>) => void;
   onSave: (draft: RecipeDraft) => void;
   onExport: (draft: RecipeDraft) => void;
@@ -155,6 +159,17 @@ export function RecipeCreatePanel({
     return { name: name.trim() || 'NEW RECIPE', baseFilter: sim, adjustments, frameId: 'none', useGeotag: true };
   };
 
+  // RESET clears the draft: back to the seed simulation, its standard values and
+  // an empty name. The form previews live, so the photo follows it home.
+  useEffect(() => {
+    if (resetToken === 0) return;
+    selectSim(seedBase);
+    setName('');
+    setWbRed(String(seedAdj.wbRed ?? 0));
+    setWbBlue(String(seedAdj.wbBlue ?? 0));
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, [resetToken]);
+
   // Realtime: every knob applies to the photo on screen as it is typed, so the
   // effect of the recipe is visible before saving it. Opening the tab is not an
   // edit — the first run (the seeded values) is skipped.