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src/types/index.ts

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+export type FrameId = 'none' | 'polaroid' | 'classic-white' | 'cinematic';
+
+export interface ColorAdjustments {
+  exposure: number; // -10 to +10 (mapped to matrix multiplier or offset)
+  contrast: number; // -10 to +10
+  saturation: number; // -10 to +10
+  temperature: number; // 2500 to 10000 (Kelvin)
+  tint: number; // -10 to +10
+  highlight: number; // -10 to +10 (Highlight contrast adjustment)
+  shadow: number; // -10 to +10 (Shadow contrast adjustment)
+  denoise: number; // 0 to 10 (mapped to blur sigma)
+  clarity: number; // -10 to +10 (mapped to matrix convolution / bloom)
+  grain: number; // 0 to 10 (mapped to noise turbulence opacity/scale)
+  colorChrome: 'none' | 'weak' | 'strong'; // Chrome effect
+}
+
+export interface Recipe {
+  id: string;
+  name: string;
+  isCustom?: boolean;
+  baseFilter: 'classic-neg' | 'provia' | 'velvia' | 'monochrome' | 'none';
+  adjustments: ColorAdjustments;
+  frameId?: FrameId; // e.g. 'none', 'polaroid', 'classic-white', 'cinematic'
+  useGeotag: boolean;
+}
+
+export interface GPSInfo {
+  latitude: number;
+  longitude: number;
+  locality?: string;
+  country?: string;
+  timestamp: number;
+}