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

pnpm-workspace.yaml

@@ -0,0 +1,64 @@
+packages:
+  - packages/*
+  - packages/plugins/*
+  - demos/*
+  - templates/*
+  - packages/blocks/playground
+  - e2e/fixture
+  - fixtures/*
+  - docs
+  - i18n
+  - infra/blog-demo
+  - infra/cache-demo
+  - infra/perf-monitor
+
+catalog:
+  "@arethetypeswrong/cli": ^0.18.2
+  "@astrojs/check": ^0.9.7
+  "@astrojs/cloudflare": ^13.1.7
+  "@astrojs/node": ^10.0.0
+  "@astrojs/react": ^5.0.0
+  "@cloudflare/workers-types": ^4.20260305.1
+  "@lingui/babel-plugin-lingui-macro": ^5.9.4
+  "@lingui/cli": ^5.9.4
+  "@lingui/conf": ^5.9.4
+  "@lingui/core": ^5.9.4
+  "@lingui/macro": ^5.9.4
+  "@lingui/react": ^5.9.4
+  "@iconify-json/ph": ^1.2.2
+  "@oslojs/crypto": ^1.0.1
+  "@oslojs/encoding": ^1.1.0
+  "@oslojs/webauthn": ^1.0.0
+  "@phosphor-icons/react": ^2.1.10
+  "@tanstack/react-query": 5.90.21
+  "@tanstack/react-router": 1.163.2
+  "@tiptap/core": ^3.20.0
+  "@tiptap/extension-character-count": ^3.20.0
+  "@tiptap/extension-drag-handle": ^3.20.0
+  "@tiptap/extension-drag-handle-react": ^3.20.0
+  "@tiptap/extension-dropcursor": ^3.20.0
+  "@tiptap/extension-focus": ^3.20.0
+  "@tiptap/extension-image": ^3.20.0
+  "@tiptap/extension-link": ^3.20.0
+  "@tiptap/extension-node-range": ^3.20.0
+  "@tiptap/extension-placeholder": ^3.20.0
+  "@tiptap/extension-text-align": ^3.20.0
+  "@tiptap/extension-typography": ^3.20.0
+  "@tiptap/extension-underline": ^3.20.0
+  "@tiptap/pm": ^3.20.0
+  "@tiptap/react": ^3.20.0
+  "@tiptap/starter-kit": ^3.20.0
+  "@tiptap/suggestion": ^3.20.0
+  "@types/node": 24.10.13
+  "@types/react": 19.2.14
+  "@types/react-dom": 19.2.3
+  astro: ^6.0.1
+  astro-iconset: ^0.0.4
+  better-sqlite3: ^12.8.0
+  publint: 0.3.17
+  react: 19.2.4
+  react-dom: 19.2.4
+  tsdown: 0.20.3
+  typescript: ^5.9.3
+  vitest: ^4.0.18
+  wrangler: ^4.80.0