fix(dev-server): invalidate WRN cache by content

packages/dev-server/src/pipeline.ts

@@ -119,17 +119,21 @@ function compileWireToTs(file: string, version = 0): string {
   const cacheDir = compileCacheDir ?? join(dirname(file), ".wrnexus");
   const name = basename(file).replace(/\.wrn$/, "");
   const suffix = version ? `-hmr-${version}` : "";
-  const out = join(cacheDir, `${name}-${hashPath(file)}${suffix}.wrn.ts`);
+  const source = readFileSync(file, "utf8");
+  // Include the source contents in the cache identity. Package managers, git
+  // checkouts, archive extraction, and linked dependencies can all replace a
+  // file while preserving (or moving backwards) its mtime. An mtime-only cache
+  // then serves an older compiled component even across a clean build.
+  const out = join(cacheDir, `${name}-${hashPath(file)}-${hashPath(source)}${suffix}.wrn.ts`);
 
-  // Skip recompiling when the on-disk cache is already newer than the source
-  // (e.g. reused across dev restarts) — avoids a read + compile + write.
+  // The content hash makes this safe even when source timestamps are preserved.
   try {
-    if (statSync(out).mtimeMs >= statSync(file).mtimeMs) return out;
+    if (statSync(out).isFile()) return out;
   } catch {
     /* cache missing → compile below */
   }
 
-  const code = compileWireFile(readFileSync(file, "utf8"), file);
+  const code = compileWireFile(source, file);
   mkdirSync(cacheDir, { recursive: true });
   writeFileSync(out, code, "utf8");
   return out;