Fix split app build entrypoints

scripts/run-build.mjs

@@ -0,0 +1,62 @@
+#!/usr/bin/env node
+
+/**
+ * Runs a Tauri app build from the app directory so relative config paths and
+ * beforeBuildCommand entries resolve consistently.
+ */
+
+import { spawnSync } from "child_process";
+import path from "path";
+import { fileURLToPath } from "url";
+
+const __dirname = path.dirname(fileURLToPath(import.meta.url));
+const rootDir = path.join(__dirname, "..");
+
+const [appName = "client", ...additionalArgs] = process.argv.slice(2);
+const appConfigs = {
+  client: {
+    appDir: "crates-tauri/yaak-app-client",
+    tauriConfig: "tauri.conf.json",
+  },
+  proxy: {
+    appDir: "crates-tauri/yaak-app-proxy",
+    tauriConfig: "tauri.conf.json",
+  },
+};
+
+const appConfig = appConfigs[appName];
+if (appConfig == null) {
+  console.error(`Unknown Tauri app "${appName}"`);
+  process.exit(1);
+}
+
+// Normalize extra `--config` path args to absolute paths from repo root so
+// callers can keep passing root-relative config files.
+const normalizedAdditionalArgs = [];
+for (let i = 0; i < additionalArgs.length; i++) {
+  const arg = additionalArgs[i];
+  if (arg === "--config" && i + 1 < additionalArgs.length) {
+    const value = additionalArgs[i + 1];
+    const isInlineJson = value.trimStart().startsWith("{");
+    normalizedAdditionalArgs.push("--config");
+    normalizedAdditionalArgs.push(
+      !isInlineJson && !path.isAbsolute(value) ? path.join(rootDir, value) : value,
+    );
+    i++;
+    continue;
+  }
+  normalizedAdditionalArgs.push(arg);
+}
+
+const tauriJs = path.join(rootDir, "node_modules", "@tauri-apps", "cli", "tauri.js");
+const result = spawnSync(
+  process.execPath,
+  [tauriJs, "build", "--config", appConfig.tauriConfig, ...normalizedAdditionalArgs],
+  {
+    cwd: path.join(rootDir, appConfig.appDir),
+    stdio: "inherit",
+    env: process.env,
+  },
+);
+
+process.exit(result.status || 0);