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/plugins/embeds/src/index.ts

@@ -0,0 +1,183 @@
+/**
+ * Embeds Plugin for EmDash CMS
+ *
+ * Provides Portable Text block types for embedding external content:
+ * - YouTube videos
+ * - Vimeo videos
+ * - Twitter/X tweets
+ * - Bluesky posts
+ * - Mastodon posts
+ * - Link previews (Open Graph)
+ * - GitHub Gists
+ *
+ * Uses astro-embed components for high-performance, privacy-respecting embeds.
+ *
+ * @example
+ * ```typescript
+ * // live.config.ts
+ * import { embedsPlugin } from "@emdash-cms/plugin-embeds";
+ *
+ * export default defineConfig({
+ *   plugins: [embedsPlugin()],
+ * });
+ * ```
+ *
+ * Embed components are automatically registered with PortableText when
+ * the plugin is enabled. No manual component wiring needed!
+ *
+ * If you need to customize rendering, you can still override specific types:
+ *
+ * @example
+ * ```astro
+ * <PortableText
+ *   value={content}
+ *   components={{
+ *     types: {
+ *       youtube: MyCustomYouTube, // Override just this one
+ *     },
+ *   }}
+ * />
+ * ```
+ */
+
+import type { Element } from "@emdash-cms/blocks";
+import type { PluginDescriptor, ResolvedPlugin } from "emdash";
+import { definePlugin } from "emdash";
+
+import { EMBED_BLOCK_TYPES } from "./schemas.js";
+
+/** Rich metadata for each embed block type */
+const EMBED_BLOCK_META: Record<
+	string,
+	{
+		label: string;
+		icon?: string;
+		description?: string;
+		placeholder?: string;
+		fields?: Element[];
+	}
+> = {
+	youtube: {
+		label: "YouTube Video",
+		icon: "video",
+		placeholder: "Paste YouTube URL...",
+		fields: [
+			{
+				type: "text_input",
+				action_id: "id",
+				label: "YouTube URL",
+				placeholder: "https://youtube.com/watch?v=...",
+			},
+			{ type: "text_input", action_id: "title", label: "Title" },
+			{ type: "text_input", action_id: "poster", label: "Poster Image URL" },
+			{
+				type: "text_input",
+				action_id: "params",
+				label: "Player Parameters",
+				placeholder: "start=57&end=75",
+			},
+		],
+	},
+	vimeo: {
+		label: "Vimeo Video",
+		icon: "video",
+		placeholder: "Paste Vimeo URL...",
+		fields: [
+			{
+				type: "text_input",
+				action_id: "id",
+				label: "Vimeo URL",
+				placeholder: "https://vimeo.com/...",
+			},
+			{ type: "text_input", action_id: "poster", label: "Poster Image URL" },
+			{ type: "text_input", action_id: "params", label: "Player Parameters" },
+		],
+	},
+	tweet: { label: "Tweet (X)", icon: "link", placeholder: "Paste tweet URL..." },
+	bluesky: { label: "Bluesky Post", icon: "link", placeholder: "Paste Bluesky post URL..." },
+	mastodon: { label: "Mastodon Post", icon: "link", placeholder: "Paste Mastodon post URL..." },
+	linkPreview: {
+		label: "Link Preview",
+		icon: "link-external",
+		placeholder: "Paste any URL...",
+	},
+	gist: {
+		label: "GitHub Gist",
+		icon: "code",
+		placeholder: "Paste Gist URL...",
+		fields: [
+			{
+				type: "text_input",
+				action_id: "id",
+				label: "Gist URL",
+				placeholder: "https://gist.github.com/.../...",
+			},
+			{
+				type: "text_input",
+				action_id: "file",
+				label: "Specific File",
+				placeholder: "Optional: filename to show",
+			},
+		],
+	},
+};
+
+export interface EmbedsPluginOptions {
+	/**
+	 * Which embed types to enable.
+	 * Defaults to all types.
+	 */
+	types?: Array<(typeof EMBED_BLOCK_TYPES)[number]>;
+}
+
+/**
+ * Create the embeds plugin descriptor
+ */
+export function embedsPlugin(
+	options: EmbedsPluginOptions = {},
+): PluginDescriptor<EmbedsPluginOptions> {
+	return {
+		id: "embeds",
+		version: "0.0.1",
+		entrypoint: "@emdash-cms/plugin-embeds",
+		componentsEntry: "@emdash-cms/plugin-embeds/astro",
+		options,
+	};
+}
+
+/**
+ * Create the embeds plugin
+ */
+export function createPlugin(options: EmbedsPluginOptions = {}): ResolvedPlugin {
+	const _enabledTypes = options.types ?? [...EMBED_BLOCK_TYPES];
+
+	return definePlugin({
+		id: "embeds",
+		version: "0.0.1",
+
+		// This plugin only provides block types - no server-side capabilities needed
+		capabilities: [],
+
+		admin: {
+			portableTextBlocks: _enabledTypes.map((type) => {
+				const meta = EMBED_BLOCK_META[type];
+				return {
+					type,
+					label: meta?.label ?? type,
+					icon: meta?.icon,
+					description: meta?.description,
+					placeholder: meta?.placeholder,
+					fields: meta?.fields,
+				};
+			}),
+		},
+	});
+}
+
+// Re-export schemas for consumers who need them
+export * from "./schemas.js";
+
+export default createPlugin;
+
+// Re-export the enabled types for the plugin to use
+export { EMBED_BLOCK_TYPES };