feat: cinematic seasonal atmosphere presets (spring/summer/autumn/winter) - enhances existing light with season tints, sun glow, fog veil

src/types/index.ts

@@ -1,5 +1,10 @@
 export type FrameId = 'none' | 'polaroid' | 'classic-white' | 'cinematic';
 
+// Cinematic seasonal atmosphere grade. Not a fake re-light: it reads the
+// photo's EXISTING exposure — warm tint + soft glow on areas already lit,
+// cool tint in shade, plus a seasonal atmospheric haze/fog veil.
+export type CinemaSeason = 'spring' | 'summer' | 'autumn' | 'winter';
+
 export interface ColorAdjustments {
   exposure: number; // -10 to +10 (mapped to matrix multiplier or offset)
   contrast: number; // -10 to +10
@@ -25,6 +30,7 @@ export interface Recipe {
   baseFilter: 'classic-neg' | 'provia' | 'velvia' | 'monochrome' | 'none';
   adjustments: ColorAdjustments;
   frameId?: FrameId; // e.g. 'none', 'polaroid', 'classic-white', 'cinematic'
+  cinema?: CinemaSeason | null; // seasonal atmosphere grade (optional)
   useGeotag: boolean;
 }