fix: proxy cloud web read-only API

scripts/dev-artifact-publish.mjs

@@ -308,6 +308,13 @@ const environment = process.env.HWLAB_ENVIRONMENT || "dev";
 const runtimeKind = process.env.HWLAB_ARTIFACT_KIND || "health-placeholder";
 const entrypoint = process.env.HWLAB_SERVICE_ENTRYPOINT || "";
 const port = Number.parseInt(process.env.PORT || process.env.HWLAB_PORT || "8080", 10);
+const cloudApiBaseUrl = process.env.HWLAB_API_BASE_URL || "";
+const readOnlyRpcMethods = new Set([
+  "system.health",
+  "cloud.adapter.describe",
+  "audit.event.query",
+  "evidence.record.query"
+]);
 
 function sendJson(response, statusCode, body) {
   const payload = JSON.stringify(body, null, 2);
@@ -340,6 +347,76 @@ function runNodeEntrypoint(file) {
   });
 }
 
+async function readRequestBody(request) {
+  let body = "";
+  for await (const chunk of request) {
+    body += chunk;
+  }
+  return body;
+}
+
+function copyHeaders(headers) {
+  const result = {};
+  for (const [key, value] of Object.entries(headers)) {
+    if (value === undefined) continue;
+    result[key] = value;
+  }
+  return result;
+}
+
+async function proxyCloudApi(request, response, url) {
+  if (!cloudApiBaseUrl) {
+    sendJson(response, 503, {
+      error: "cloud_api_base_url_missing",
+      serviceId,
+      path: url.pathname
+    });
+    return;
+  }
+
+  let body = "";
+  if (request.method !== "GET") {
+    body = await readRequestBody(request);
+  }
+
+  if (url.pathname === "/json-rpc") {
+    try {
+      const envelope = body ? JSON.parse(body) : {};
+      if (!readOnlyRpcMethods.has(envelope.method)) {
+        sendJson(response, 403, {
+          error: "readonly_rpc_required",
+          serviceId,
+          method: envelope.method || null
+        });
+        return;
+      }
+    } catch (error) {
+      sendJson(response, 400, {
+        error: "invalid_json",
+        serviceId,
+        reason: error.message
+      });
+      return;
+    }
+  }
+
+  const target = new URL(url.pathname + url.search, cloudApiBaseUrl);
+  const upstream = await fetch(target, {
+    method: request.method,
+    headers: {
+      accept: request.headers.accept || "application/json",
+      "content-type": request.headers["content-type"] || "application/json"
+    },
+    body: request.method === "GET" ? undefined : body
+  });
+  const payload = Buffer.from(await upstream.arrayBuffer());
+  response.writeHead(upstream.status, {
+    ...copyHeaders(Object.fromEntries(upstream.headers.entries())),
+    "content-length": payload.length
+  });
+  response.end(payload);
+}
+
 async function serveCloudWeb() {
   const roots = ["/app/web/hwlab-cloud-web/dist", "/app/web/hwlab-cloud-web"];
   const server = createServer(async (request, response) => {
@@ -349,6 +426,14 @@ async function serveCloudWeb() {
       return;
     }
 
+    if (
+      (request.method === "GET" && (url.pathname === "/v1" || url.pathname.startsWith("/v1/"))) ||
+      (request.method === "POST" && url.pathname === "/json-rpc")
+    ) {
+      await proxyCloudApi(request, response, url);
+      return;
+    }
+
     const relativePath = url.pathname === "/" ? "index.html" : url.pathname.slice(1);
     for (const root of roots) {
       const candidate = path.resolve(root, relativePath);

web/hwlab-cloud-web/scripts/check.mjs

@@ -19,7 +19,8 @@ for (const file of requiredFiles) {
 
 const html = fs.readFileSync(path.resolve(rootDir, "index.html"), "utf8");
 const app = fs.readFileSync(path.resolve(rootDir, "app.mjs"), "utf8");
-const frontendSource = `${html}\n${app}`;
+const artifactPublisher = fs.readFileSync(path.resolve(repoRoot, "scripts/dev-artifact-publish.mjs"), "utf8");
+const frontendSource = `${html}\n${app}\n${artifactPublisher}`;
 
 assert.match(html, /HWLAB DEV Console/);
 assert.match(html, /M3 Diagnostics Console/);
@@ -48,6 +49,13 @@ assert.match(app, /callRpc\("system\.health"\)/);
 assert.match(app, /callRpc\("cloud\.adapter\.describe"\)/);
 assert.match(app, /callRpc\("audit\.event\.query"/);
 assert.match(app, /callRpc\("evidence\.record\.query"/);
+assert.match(artifactPublisher, /HWLAB_API_BASE_URL/);
+assert.match(artifactPublisher, /readOnlyRpcMethods/);
+assert.match(artifactPublisher, /"system\.health"/);
+assert.match(artifactPublisher, /"cloud\.adapter\.describe"/);
+assert.match(artifactPublisher, /"audit\.event\.query"/);
+assert.match(artifactPublisher, /"evidence\.record\.query"/);
+assert.match(artifactPublisher, /readonly_rpc_required/);
 assert.match(app, /degraded/);
 assert.match(app, /runtime\.serviceRoute\.join\(" -> "\)/);
 assert.doesNotMatch(app, /callRpc\("hardware\./);