test: add 5 version consistency tests

Validates semver, >= 1.0.0, CHANGELOG entry, MIT LICENSE, and
marketing directory exists.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mcp-tool-shop

test/version.test.mjs

@@ -0,0 +1,40 @@
+import { describe, it } from "node:test";
+import assert from "node:assert/strict";
+import { readFileSync, existsSync } from "node:fs";
+import { join, dirname } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const ROOT = join(__dirname, "..");
+
+const pkg = JSON.parse(readFileSync(join(ROOT, "package.json"), "utf-8"));
+const changelog = readFileSync(join(ROOT, "CHANGELOG.md"), "utf-8");
+
+describe("version consistency", () => {
+  it("version is valid semver", () => {
+    const parts = pkg.version.split(".");
+    assert.ok(parts.length >= 3, `Expected semver, got ${pkg.version}`);
+    assert.ok(parts.slice(0, 3).every((p) => /^\d+$/.test(p)));
+  });
+
+  it("version is >= 1.0.0", () => {
+    const major = Number(pkg.version.split(".")[0]);
+    assert.ok(major >= 1, `Expected major >= 1, got ${major}`);
+  });
+
+  it("CHANGELOG contains current version", () => {
+    assert.ok(
+      changelog.includes(`[${pkg.version}]`),
+      `CHANGELOG missing [${pkg.version}]`,
+    );
+  });
+
+  it("LICENSE exists and is MIT", () => {
+    const license = readFileSync(join(ROOT, "LICENSE"), "utf-8");
+    assert.ok(license.includes("MIT"));
+  });
+
+  it("marketing directory exists", () => {
+    assert.ok(existsSync(join(ROOT, "marketing")));
+  });
+});