Initial commit: Fast Inventory app

Monorepo with Express + SQLite backend and Vite + React frontend.
Features: item CRUD, file uploads with thumbnails, soft delete,
item duplication with file copying, autocomplete inputs, stats dashboard.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

server/src/resize.ts

@@ -0,0 +1,42 @@
+import sharp from 'sharp';
+import { join, parse } from 'path';
+import { UPLOADS_DIR } from './middleware/upload.js';
+
+interface VariantSpec {
+  suffix: string;
+  maxDimension: number;
+}
+
+const VARIANTS: VariantSpec[] = [
+  { suffix: '_thumb', maxDimension: 300 },
+  { suffix: '_medium', maxDimension: 768 },
+  { suffix: '_large', maxDimension: 1920 },
+];
+
+const RESIZABLE_MIMES = new Set([
+  'image/jpeg', 'image/png', 'image/webp', 'image/heic',
+]);
+
+export function isResizable(mimeType: string): boolean {
+  return RESIZABLE_MIMES.has(mimeType);
+}
+
+export async function generateVariants(storedName: string): Promise<void> {
+  const { name, ext } = parse(storedName);
+  const sourcePath = join(UPLOADS_DIR, storedName);
+
+  for (const variant of VARIANTS) {
+    const outPath = join(UPLOADS_DIR, `${name}${variant.suffix}${ext}`);
+    await sharp(sourcePath)
+      .resize(variant.maxDimension, variant.maxDimension, {
+        fit: 'inside',
+        withoutEnlargement: true,
+      })
+      .toFile(outPath);
+  }
+}
+
+export function getVariantFilenames(storedName: string): string[] {
+  const { name, ext } = parse(storedName);
+  return VARIANTS.map(v => `${name}${v.suffix}${ext}`);
+}