fix: entrypoint seed check handles empty databases

Check for content entries, not just file existence. If data.db
exists but has no content, still run seed to populate.

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

entrypoint.sh

@@ -1,10 +1,11 @@
 #!/bin/sh
-# Only seed on first launch (when data.db doesn't exist)
-if [ ! -f data.db ]; then
-  echo "Database missing, running emdash init & seed..."
+# Only seed on first launch (when data.db doesn't exist or is empty)
+# Check if content table has any entries
+if [ ! -f data.db ] || ! sqlite3 data.db "SELECT COUNT(*) FROM content" 2>/dev/null | grep -q "^[1-9]"; then
+  echo "Database missing or empty, running emdash init & seed..."
   pnpm exec emdash init
   pnpm exec emdash seed
 else
-  echo "Database exists, starting normally..."
+  echo "Database exists with content, starting normally..."
 fi
 exec node ./dist/server/entry.mjs