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/portfolio/.gitignore

@@ -0,0 +1,23 @@
+# build output
+dist/
+
+# dependencies
+node_modules/
+
+# astro
+.astro/
+
+# local data
+data.db
+data.db-journal
+uploads/
+
+# logs
+npm-debug.log*
+
+# environment variables
+.env
+.env.local
+
+# macOS
+.DS_Store