Add CYD browser flasher with Next.js, i18n, and Web Serial install.

Replace the starter app with a public/local flasher that discovers sibling firmwares, supports en/zh, and documents HTTPS deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

app/api/firmware/[project]/[variant]/[file]/route.ts

@@ -0,0 +1,37 @@
+import fs from "fs";
+import path from "path";
+import { NextResponse } from "next/server";
+import { REQUIRED_BINS, resolveFirmwareDir } from "@/lib/firmware";
+
+export const dynamic = "force-dynamic";
+
+type Params = {
+  params: Promise<{ project: string; variant: string; file: string }>;
+};
+
+export async function GET(_req: Request, { params }: Params) {
+  const { project, variant, file } = await params;
+  if (!(REQUIRED_BINS as readonly string[]).includes(file)) {
+    return NextResponse.json({ error: "invalid file" }, { status: 400 });
+  }
+
+  const dir = resolveFirmwareDir(project, variant);
+  if (!dir) {
+    return NextResponse.json({ error: "not found" }, { status: 404 });
+  }
+
+  const abs = path.join(dir, file);
+  if (!fs.existsSync(abs)) {
+    return NextResponse.json({ error: "not found" }, { status: 404 });
+  }
+
+  const buf = fs.readFileSync(abs);
+  return new NextResponse(buf, {
+    headers: {
+      "Content-Type": "application/octet-stream",
+      "Content-Length": String(buf.length),
+      "Cache-Control": "no-store",
+      "Content-Disposition": `attachment; filename="${file}"`,
+    },
+  });
+}

app/api/firmware/[project]/[variant]/manifest.json/route.ts

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+import { NextResponse } from "next/server";
+import {
+  FLASH_PARTS,
+  readFirmwareMeta,
+  resolveFirmwareDir,
+} from "@/lib/firmware";
+
+export const dynamic = "force-dynamic";
+
+type Params = { params: Promise<{ project: string; variant: string }> };
+
+export async function GET(_req: Request, { params }: Params) {
+  const { project, variant } = await params;
+  const dir = resolveFirmwareDir(project, variant);
+  if (!dir) {
+    return NextResponse.json({ error: "firmware not found" }, { status: 404 });
+  }
+
+  const meta = readFirmwareMeta(dir);
+  const name = meta.name || `${project} (${variant})`;
+  const version =
+    [meta.date, meta.git].filter(Boolean).join(" / ") || "local";
+
+  const base = `/api/firmware/${encodeURIComponent(project)}/${encodeURIComponent(variant)}`;
+  return NextResponse.json({
+    name,
+    version,
+    new_install_prompt_erase: true,
+    builds: [
+      {
+        chipFamily: "ESP32",
+        parts: FLASH_PARTS.map((p) => ({
+          path: `${base}/${p.file}`,
+          offset: p.offset,
+        })),
+      },
+    ],
+  });
+}

app/api/firmware/route.ts

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+import { NextResponse } from "next/server";
+import { discoverFirmware } from "@/lib/firmware";
+
+export const dynamic = "force-dynamic";
+
+export async function GET() {
+  const firmwares = discoverFirmware();
+  return NextResponse.json({
+    chipFamily: "ESP32",
+    count: firmwares.length,
+    firmwares,
+  });
+}