feat: add wallpaper types and animation metadata

AnimationType, WallpaperConfig, uniform definitions,
and animation tier metadata (free/premium/pro).

src/types/wallpaper.ts

@@ -0,0 +1,79 @@
+export type AnimationType =
+  | "ken-burns"
+  | "color-shift"
+  | "particles"
+  | "vignette-pulse"
+  | "glitch"
+  | "depth-parallax";
+
+export type ParticlePreset = "snow" | "rain" | "bokeh" | "dust" | "fireflies";
+
+export interface AnimationUniforms {
+  intensity: number;
+  speed: number;
+  direction: number; // 0-360 degrees
+  scale: number;
+  [key: string]: number;
+}
+
+export interface WallpaperConfig {
+  id: string;
+  sourceUri: string;
+  depthMapUri?: string;
+  animation: AnimationType;
+  uniforms: AnimationUniforms;
+  particlePreset?: ParticlePreset;
+  fps: number;
+  createdAt: string;
+  updatedAt: string;
+}
+
+export interface WallpaperPreview {
+  id: string;
+  thumbnailUri: string;
+  animation: AnimationType;
+  config: WallpaperConfig;
+}
+
+export const DEFAULT_UNIFORMS: AnimationUniforms = {
+  intensity: 0.5,
+  speed: 0.3,
+  direction: 0,
+  scale: 1.0,
+};
+
+export const ANIMATION_META: Record<
+  AnimationType,
+  { label: string; description: string; tier: "free" | "premium" | "pro" }
+> = {
+  "ken-burns": {
+    label: "Ken Burns",
+    description: "Zoom lent et panoramique doux",
+    tier: "free",
+  },
+  "color-shift": {
+    label: "Color Shift",
+    description: "Variation cyclique teinte/saturation",
+    tier: "free",
+  },
+  particles: {
+    label: "Particules",
+    description: "Overlay animé de particules",
+    tier: "free",
+  },
+  "vignette-pulse": {
+    label: "Vignette",
+    description: "Vignette dynamique oscillante",
+    tier: "premium",
+  },
+  glitch: {
+    label: "Glitch",
+    description: "Décalage RGB avec noise",
+    tier: "premium",
+  },
+  "depth-parallax": {
+    label: "Parallax 3D",
+    description: "Effet de profondeur via depth map IA",
+    tier: "pro",
+  },
+};