Fix SQLite database path to match emdash init location

The emdash CLI creates the database at ./data.db relative to the
workspace root (/app/emdash/data.db), but the Astro config was
pointing to ./storage/data.db. This caused getEmDashEntry() to
return null since the database used at runtime was empty.

Change db.ts to use file:./data.db instead of file:./storage/data.db

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

src/lib/db.ts

@@ -12,8 +12,8 @@ export function getDatabaseConfig() {
 	const url = process.env.DATABASE_URL;
 
 	if (!url) {
-		// Default to SQLite
-		return sqlite({ url: "file:./storage/data.db" });
+		// Default to SQLite - matches where emdash init creates the database
+		return sqlite({ url: "file:./data.db" });
 	}
 
 	if (url.startsWith("file:")) {
@@ -28,5 +28,5 @@ export function getDatabaseConfig() {
 
 	// Fallback to SQLite
 	console.warn(`Unknown DATABASE_URL protocol, falling back to SQLite`);
-	return sqlite({ url: "file:./storage/data.db" });
+	return sqlite({ url: "file:./data.db" });
 }