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/tsconfig.json

@@ -0,0 +1,17 @@
+{
+	"compilerOptions": {
+		"target": "ES2024",
+		"module": "preserve",
+		"moduleResolution": "bundler",
+		"strict": true,
+		"noEmit": true,
+		"declaration": true,
+		"isolatedModules": true,
+		"skipLibCheck": true,
+		"esModuleInterop": true,
+		"noUncheckedIndexedAccess": true,
+		"noImplicitOverride": true,
+		"types": ["@cloudflare/workers-types", "astro/client"]
+	},
+	"include": ["src/**/*.ts", "tests/**/*.ts"]
+}