Emdash source with visual editor image upload fix

Fixes:
1. media.ts: wrap placeholder generation in try-catch
2. toolbar.ts: check r.ok, display error message in popover

packages/admin/scripts/copy-locales.js

@@ -0,0 +1,18 @@
+/**
+ * Copy compiled locale catalogs (.mjs) from src/locales to dist/locales.
+ * Run after `lingui compile` to include catalogs in the published package.
+ */
+import { readdirSync, mkdirSync, copyFileSync } from "node:fs";
+import { dirname, join } from "node:path";
+import { fileURLToPath } from "node:url";
+
+const __dirname = dirname(fileURLToPath(import.meta.url));
+const srcDir = join(__dirname, "..", "src", "locales");
+const distDir = join(__dirname, "..", "dist", "locales");
+
+for (const entry of readdirSync(srcDir, { withFileTypes: true })) {
+	if (!entry.isDirectory()) continue;
+	const destDir = join(distDir, entry.name);
+	mkdirSync(destDir, { recursive: true });
+	copyFileSync(join(srcDir, entry.name, "messages.mjs"), join(destDir, "messages.mjs"));
+}