chore: initial commit with Phase 0 setup

packages/mcp-server/src/proxy.ts

@@ -0,0 +1,26 @@
+export async function proxyToBackend(
+  endpoint: string,
+  payload: any,
+  baseUrl?: string,
+  apiKey?: string
+) {
+  if (!baseUrl) throw new Error("API_BASE_URL is not configured.");
+  
+  const url = `${baseUrl.replace(/\/$/, "")}${endpoint}`;
+  
+  const response = await fetch(url, {
+    method: "POST",
+    headers: {
+      "Content-Type": "application/json",
+      "Authorization": `Bearer ${apiKey || ""}`,
+    },
+    body: JSON.stringify(payload),
+  });
+
+  if (!response.ok) {
+    const text = await response.text();
+    throw new Error(`Backend error (${response.status}): ${text}`);
+  }
+
+  return response.json();
+}