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

e2e/fixture/astro.config.mjs

@@ -0,0 +1,40 @@
+/**
+ * Minimal Astro config for Playwright e2e tests.
+ *
+ * Uses env vars for the database path and optional marketplace URL
+ * so each test run gets an isolated database.
+ */
+import node from "@astrojs/node";
+import react from "@astrojs/react";
+import { colorPlugin } from "@emdash-cms/plugin-color";
+import { defineConfig } from "astro/config";
+import emdash from "emdash/astro";
+import { sqlite } from "emdash/db";
+
+const dbUrl = process.env.EMDASH_TEST_DB || "file:./test.db";
+const marketplaceUrl = process.env.EMDASH_MARKETPLACE_URL || undefined;
+
+export default defineConfig({
+	output: "server",
+	adapter: node({ mode: "standalone" }),
+	integrations: [
+		react(),
+		emdash({
+			database: sqlite({ url: dbUrl }),
+			plugins: [colorPlugin()],
+			marketplace: marketplaceUrl,
+			sandboxRunner: marketplaceUrl ? "./noop-sandbox.mjs" : undefined,
+		}),
+	],
+	i18n: {
+		defaultLocale: "en",
+		locales: ["en", "fr", "es"],
+		fallback: { fr: "en", es: "en" },
+	},
+	devToolbar: { enabled: false },
+	vite: {
+		server: {
+			fs: { strict: false },
+		},
+	},
+});