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/cloudflare/tests/do-config.test.ts

@@ -0,0 +1,35 @@
+import { describe, it, expect } from "vitest";
+
+import { previewDatabase, playgroundDatabase } from "../src/index.js";
+
+describe("previewDatabase()", () => {
+	it("returns a sqlite DatabaseDescriptor with the DO entrypoint", () => {
+		const result = previewDatabase({ binding: "PREVIEW_DB" });
+		expect(result).toEqual({
+			entrypoint: "@emdash-cms/cloudflare/db/do",
+			config: { binding: "PREVIEW_DB" },
+			type: "sqlite",
+		});
+	});
+
+	it("passes binding through to config", () => {
+		const result = previewDatabase({ binding: "MY_PREVIEW" });
+		expect(result.config).toEqual({ binding: "MY_PREVIEW" });
+	});
+});
+
+describe("playgroundDatabase()", () => {
+	it("returns a sqlite DatabaseDescriptor with the playground entrypoint", () => {
+		const result = playgroundDatabase({ binding: "PLAYGROUND_DB" });
+		expect(result).toEqual({
+			entrypoint: "@emdash-cms/cloudflare/db/playground",
+			config: { binding: "PLAYGROUND_DB" },
+			type: "sqlite",
+		});
+	});
+
+	it("passes binding through to config", () => {
+		const result = playgroundDatabase({ binding: "MY_PLAYGROUND" });
+		expect(result.config).toEqual({ binding: "MY_PLAYGROUND" });
+	});
+});