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

templates/starter-cloudflare/seed/seed.json

@@ -0,0 +1,232 @@
+{
+	"$schema": "https://emdashcms.com/seed.schema.json",
+	"version": "1",
+	"meta": {
+		"name": "Starter",
+		"description": "A minimal EmDash starter with posts and pages",
+		"author": "EmDash"
+	},
+	"settings": {
+		"title": "My Site",
+		"tagline": "Built with EmDash"
+	},
+	"collections": [
+		{
+			"slug": "posts",
+			"label": "Posts",
+			"labelSingular": "Post",
+			"supports": ["drafts", "revisions", "search", "seo"],
+			"fields": [
+				{
+					"slug": "title",
+					"label": "Title",
+					"type": "string",
+					"required": true,
+					"searchable": true
+				},
+				{
+					"slug": "featured_image",
+					"label": "Featured Image",
+					"type": "image"
+				},
+				{
+					"slug": "content",
+					"label": "Content",
+					"type": "portableText",
+					"searchable": true
+				},
+				{
+					"slug": "excerpt",
+					"label": "Excerpt",
+					"type": "text"
+				}
+			]
+		},
+		{
+			"slug": "pages",
+			"label": "Pages",
+			"labelSingular": "Page",
+			"supports": ["drafts", "revisions", "search"],
+			"fields": [
+				{
+					"slug": "title",
+					"label": "Title",
+					"type": "string",
+					"required": true,
+					"searchable": true
+				},
+				{
+					"slug": "content",
+					"label": "Content",
+					"type": "portableText",
+					"searchable": true
+				}
+			]
+		}
+	],
+	"taxonomies": [
+		{
+			"name": "category",
+			"label": "Categories",
+			"labelSingular": "Category",
+			"hierarchical": true,
+			"collections": ["posts"],
+			"terms": [
+				{
+					"slug": "general",
+					"label": "General"
+				},
+				{
+					"slug": "updates",
+					"label": "Updates"
+				}
+			]
+		},
+		{
+			"name": "tag",
+			"label": "Tags",
+			"labelSingular": "Tag",
+			"hierarchical": false,
+			"collections": ["posts"],
+			"terms": [
+				{
+					"slug": "starter",
+					"label": "Starter"
+				},
+				{
+					"slug": "example",
+					"label": "Example"
+				}
+			]
+		}
+	],
+	"menus": [
+		{
+			"name": "primary",
+			"label": "Primary Navigation",
+			"items": [
+				{
+					"type": "custom",
+					"label": "Home",
+					"url": "/"
+				},
+				{
+					"type": "custom",
+					"label": "Posts",
+					"url": "/posts"
+				},
+				{
+					"type": "custom",
+					"label": "About",
+					"url": "/about"
+				}
+			]
+		}
+	],
+	"widgetAreas": [
+		{
+			"name": "sidebar",
+			"label": "Sidebar",
+			"description": "Sidebar widget area",
+			"widgets": [
+				{
+					"type": "component",
+					"componentId": "core:search",
+					"title": "Search"
+				},
+				{
+					"type": "component",
+					"componentId": "core:categories",
+					"title": "Categories"
+				},
+				{
+					"type": "component",
+					"componentId": "core:recent-posts",
+					"title": "Recent Posts",
+					"settings": {
+						"count": 5
+					}
+				}
+			]
+		}
+	],
+	"content": {
+		"pages": [
+			{
+				"id": "about",
+				"slug": "about",
+				"status": "published",
+				"data": {
+					"title": "About",
+					"content": [
+						{
+							"_type": "block",
+							"style": "normal",
+							"children": [
+								{
+									"_type": "span",
+									"text": "This is the about page. Edit it in the admin panel or replace this template with your own design.",
+									"_key": "k1"
+								}
+							],
+							"_key": "k0"
+						}
+					]
+				}
+			}
+		],
+		"posts": [
+			{
+				"id": "post-1",
+				"slug": "welcome",
+				"status": "published",
+				"data": {
+					"title": "Welcome",
+					"excerpt": "Your first post. Replace this with your own content.",
+					"content": [
+						{
+							"_type": "block",
+							"style": "normal",
+							"children": [
+								{
+									"_type": "span",
+									"text": "This is a starter post. The templates in this project show the basic patterns for querying and rendering EmDash content. Replace them with your own design.",
+									"_key": "k1"
+								}
+							],
+							"_key": "k0"
+						},
+						{
+							"_type": "block",
+							"style": "h2",
+							"children": [
+								{
+									"_type": "span",
+									"text": "What to do next",
+									"_key": "k3"
+								}
+							],
+							"_key": "k2"
+						},
+						{
+							"_type": "block",
+							"style": "normal",
+							"children": [
+								{
+									"_type": "span",
+									"text": "Open the admin panel to add content, or edit the Astro pages in src/pages to change how content is displayed.",
+									"_key": "k5"
+								}
+							],
+							"_key": "k4"
+						}
+					]
+				},
+				"taxonomies": {
+					"category": ["general"],
+					"tag": ["starter", "example"]
+				}
+			}
+		]
+	}
+}