update to support postgresql and add godocs

go.mod

@@ -5,6 +5,7 @@ go 1.25.0
 require (
 	github.com/a-h/templ v0.3.977
 	github.com/go-co-op/gocron/v2 v2.19.0
+	github.com/jackc/pgx/v5 v5.8.0
 	github.com/jmoiron/sqlx v1.4.0
 	github.com/joho/godotenv v1.5.1
 	github.com/pressly/goose/v3 v3.26.0
@@ -17,6 +18,9 @@ require (
 require (
 	github.com/dustin/go-humanize v1.0.1 // indirect
 	github.com/google/uuid v1.6.0 // indirect
+	github.com/jackc/pgpassfile v1.0.0 // indirect
+	github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
+	github.com/jackc/puddle/v2 v2.2.2 // indirect
 	github.com/jonboulle/clockwork v0.5.0 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
 	github.com/mfridman/interpolate v0.0.2 // indirect