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>

test-node-modules/typescript

@@ -0,0 +1 @@
+.pnpm/typescript@6.0.0-beta/node_modules/typescript