feat: close application architecture gaps

packages/cli/src/check.ts

@@ -2,6 +2,7 @@ import { readFileSync } from "node:fs";
 import { resolve } from "node:path";
 import { runBuild } from "./build.ts";
 import { runTypecheck } from "./types.ts";
+import { assertReachability } from "./reachability.ts";
 
 async function runScript(root: string, name: string): Promise<void> {
   const child = Bun.spawn(["bun", "run", name], {
@@ -20,6 +21,7 @@ export async function runCheck(appRoot: string): Promise<void> {
   const manifest = JSON.parse(readFileSync(resolve(root, "package.json"), "utf8")) as {
     scripts?: Record<string, string>;
   };
+  assertReachability(root);
   await runBuild(root);
   if (manifest.scripts?.typecheck) await runScript(root, "typecheck");
   else if (!(await runTypecheck(root))) throw new Error("WRN-CHECK: application typecheck failed");