fix(release): enforce Android version parity (#141)

Adds a deterministic metadata guard before CI and F-Droid builds so generated release artifacts cannot silently inherit stale Gradle versions.\n\nPlan: https://github.com/dzianisv/opencode-mobile/issues/95#issuecomment-5047827673

Co-authored-by: engineer <engineer@gray-knight-m1.local>

scripts/check-version-parity.mjs

@@ -0,0 +1,31 @@
+import { readFile } from "node:fs/promises";
+
+const app = JSON.parse(await readFile("app.json", "utf8"));
+const pkg = JSON.parse(await readFile("package.json", "utf8"));
+const gradle = await readFile("android/app/build.gradle", "utf8");
+
+const name = gradle.match(/^\s*versionName\s+"([^"]+)"/m)?.[1];
+const code = Number(gradle.match(/^\s*versionCode\s+(\d+)/m)?.[1]);
+const expectedName = app.expo.version;
+const expectedCode = app.expo.android.versionCode;
+
+const errors = [];
+
+if (pkg.version !== expectedName) {
+  errors.push(`package.json version ${pkg.version} != app.json version ${expectedName}`);
+}
+
+if (name !== expectedName) {
+  errors.push(`Gradle versionName ${name ?? "missing"} != app.json version ${expectedName}`);
+}
+
+if (code !== expectedCode) {
+  errors.push(`Gradle versionCode ${Number.isNaN(code) ? "missing" : code} != app.json versionCode ${expectedCode}`);
+}
+
+if (errors.length) {
+  console.error(errors.join("\n"));
+  process.exitCode = 1;
+} else {
+  console.log(`Version metadata aligned: ${expectedName} (${expectedCode})`);
+}