fix: audit and replace pixelated competition logos (#226)

scripts/audit-competition-logos.mjs

@@ -0,0 +1,44 @@
+#!/usr/bin/env node
+/** Audit competition logos for #226 using sharp.
+
+This script reads every PNG in `public/competitions/`, extracts its pixel
+dimensions, and reports how many are under ~128px on their long edge. It uses
+`sharp` since the repo already depends on it and it parses local files without
+hitting the network.
+*/
+
+import { readFileSync, readdirSync } from "node:fs";
+import sharp from "sharp";
+
+const base = "public/competitions";
+const files = readdirSync(base);
+const rows = [];
+
+for (const name of files) {
+  if (!name.endsWith(".png")) continue;
+  const buf = readFileSync(`${base}/${name}`);
+  const { width, height } = await sharp(buf).metadata();
+  const w = width ?? -1;
+  const h = height ?? -1;
+  rows.push({
+    name,
+    w,
+    h,
+    bytes: buf.length,
+    small: Math.min(w, h) < 128,
+  });
+}
+
+rows.sort((a, b) => Math.min(a.w, a.h) - Math.min(b.w, b.h));
+
+let smallCount = 0;
+for (const r of rows) {
+  if (r.small) smallCount++;
+  console.log(
+    `${r.name.padEnd(52)} ${String(r.w).padStart(5)}x${String(r.h).padStart(5)}  ${r.bytes}B` +
+      (r.small ? "  <-- under ~128 long edge" : ""),
+  );
+}
+
+console.log("");
+console.log(`total pngs: ${rows.length}; under ~128 long edge: ${smallCount}`);