feat(web): checkpoint web app init

- frontend (Vite/React) + server (Hono/Drizzle) scaffold under web/
- eeschema WASM embind kicadOpenFile hook + programmatic open-flow
- skip KiCad first-run setup wizard by seeding default config in preRun
- dev: auto-sync output/ WASM artifacts into tests/apps/kicad via link-wasm

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

web/apps/server/src/app.ts

@@ -0,0 +1,32 @@
+import cors from "@fastify/cors";
+import multipart from "@fastify/multipart";
+import Fastify, { type FastifyInstance } from "fastify";
+import { env } from "./env.js";
+import { apiPlugin } from "./routes/api.js";
+import { fileRoutes } from "./routes/files.js";
+
+export async function buildApp(): Promise<FastifyInstance> {
+  const app = Fastify({
+    logger: true,
+    // Project files (whole KiCad trees) and zips can be large.
+    bodyLimit: 1024 * 1024 * 1024,
+  });
+
+  await app.register(cors, {
+    origin: env.CORS_ORIGIN === "*" ? true : env.CORS_ORIGIN.split(","),
+  });
+
+  await app.register(multipart, {
+    limits: {
+      fileSize: 1024 * 1024 * 1024, // 1 GiB per file
+      files: 5000, // a KiCad project can have many lib files
+    },
+  });
+
+  app.get("/health", async () => ({ ok: true }));
+
+  await app.register(apiPlugin);
+  await app.register(fileRoutes);
+
+  return app;
+}