Initial commit: EmDash blog template

Fixed index.astro: escaped curly braces in code display block
to prevent Astro parser misinterpreting them as expressions.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

tsconfig.json

@@ -0,0 +1,7 @@
+{
+	"extends": "astro/tsconfigs/base",
+	"compilerOptions": {
+		"types": ["node"]
+	},
+	"include": ["src", ".astro/types.d.ts", "emdash-env.d.ts"]
+}