Scaffold and Phase 0-1

src/config.ts

@@ -0,0 +1,30 @@
+import { config as loadEnv } from "dotenv";
+import { z } from "zod";
+
+loadEnv();
+
+const schema = z.object({
+  NODE_ENV: z.enum(["development", "production", "test"]).default("production"),
+  PORT: z.coerce.number().int().positive().default(8811),
+  LOG_LEVEL: z.enum(["debug", "info", "warn", "error"]).default("info"),
+  GATEWAY_VERSION: z.string().default("0.1.0"),
+  ENABLED_PLUGINS: z.string().default(""),
+  AGENT_TOKENS: z.string().default(""),
+  PLUGINS_DIR: z.string().default("./dist/plugins"),
+});
+
+const parsed = schema.safeParse(process.env);
+if (!parsed.success) {
+  // Boot-time validation failure: print and exit. Never let a misconfigured
+  // gateway start up partially.
+  console.error("Invalid environment configuration:", parsed.error.format());
+  process.exit(1);
+}
+
+export const env = parsed.data;
+
+export const enabledPlugins = env.ENABLED_PLUGINS
+  ? env.ENABLED_PLUGINS.split(",")
+      .map((s) => s.trim())
+      .filter(Boolean)
+  : [];