Reduce Huginn to Eve DSL projection

src/cli.ts

@@ -0,0 +1,23 @@
+#!/usr/bin/env node
+import { readFile } from "node:fs/promises";
+import { inspectCultCacheBytes } from "cultcache-ts/inspection";
+
+import { buildHuginnEveDsl } from "./huginn-eve-dsl";
+
+async function main(args: string[]): Promise<void> {
+  const filePath = args[0];
+  if (!filePath || args.includes("--help") || args.includes("-h")) {
+    process.stderr.write("Usage: huginn <state.cc|state.msgpack|state.mpack>\n");
+    process.exitCode = filePath ? 0 : 1;
+    return;
+  }
+
+  const bytes = await readFile(filePath);
+  const inspection = inspectCultCacheBytes(filePath, bytes);
+  process.stdout.write(`${buildHuginnEveDsl(inspection)}\n`);
+}
+
+void main(process.argv.slice(2)).catch((error: unknown) => {
+  process.stderr.write(`${error instanceof Error ? error.message : String(error)}\n`);
+  process.exitCode = 1;
+});