Initial build: SimpleScan Solo v0.1.0 - Freelancer receipt capture Chrome extension

src/types.ts

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+export interface Receipt {
+  id: string;
+  title: string;
+  amount: number;
+  currency: string;
+  category: TaxCategory;
+  date: string; // ISO date
+  vendor: string;
+  notes: string;
+  imageDataUrl?: string;
+  source: 'manual' | 'email' | 'upload' | 'camera';
+  createdAt: string;
+}
+
+export type TaxCategory =
+  | 'equipment'
+  | 'home_office'
+  | 'software'
+  | 'internet_phone'
+  | 'travel'
+  | 'meals'
+  | 'professional_services'
+  | 'marketing'
+  | 'education'
+  | 'other';
+
+export interface CategoryInfo {
+  id: TaxCategory;
+  label: string;
+  description: string;
+  icon: string;
+}
+
+export interface EmailReceiptHint {
+  subject: string;
+  sender: string;
+  date: string;
+  amount?: number;
+  currency?: string;
+  vendor?: string;
+}
+
+export interface AppSettings {
+  defaultCurrency: string;
+  taxYear: string;
+  ownerName: string;
+}
+
+export const DEFAULT_SETTINGS: AppSettings = {
+  defaultCurrency: 'USD',
+  taxYear: new Date().getFullYear().toString(),
+  ownerName: '',
+};