Add consolidated CI pipeline with cached deps and tests

scripts/run-unit-tests.mjs

@@ -0,0 +1,76 @@
+import { spawn } from "node:child_process";
+import { readdir, readFile } from "node:fs/promises";
+import { fileURLToPath } from "node:url";
+import path from "node:path";
+
+const rootDir = path.dirname(fileURLToPath(new URL("../package.json", import.meta.url)));
+const testsDir = path.join(rootDir, "tests");
+const testFiles = [];
+
+async function collectTests(dir) {
+  const entries = await readdir(dir, { withFileTypes: true });
+
+  for (const entry of entries) {
+    if (entry.name.startsWith(".")) {
+      continue;
+    }
+
+    const fullPath = path.join(dir, entry.name);
+
+    if (entry.isDirectory()) {
+      if (entry.name === "visual") {
+        continue;
+      }
+
+      await collectTests(fullPath);
+      continue;
+    }
+
+    if (entry.isFile() && entry.name.endsWith(".test.mjs")) {
+      const content = await readFile(fullPath, "utf8");
+      if (content.includes("node:test")) {
+        testFiles.push(fullPath);
+      }
+    }
+  }
+}
+
+await collectTests(testsDir);
+
+testFiles.sort((a, b) => a.localeCompare(b));
+
+if (testFiles.length === 0) {
+  console.log("No unit tests found.");
+  process.exit(0);
+}
+
+for (const testFile of testFiles) {
+  const relativePath = path.relative(rootDir, testFile);
+  console.log(`\n→ Running ${relativePath}`);
+
+  await new Promise((resolve, reject) => {
+    const child = spawn(process.execPath, [testFile], {
+      stdio: "inherit",
+    });
+
+    child.on("close", (code, signal) => {
+      if (signal) {
+        reject(new Error(`${relativePath} exited with signal ${signal}`));
+        return;
+      }
+
+      if (code !== 0) {
+        reject(new Error(`${relativePath} failed with exit code ${code}`));
+        return;
+      }
+
+      resolve();
+    });
+
+    child.on("error", (error) => {
+      reject(error);
+    });
+  });
+}
+
+console.log("\n✔ All unit tests passed");