infra: add logging wrapping

Resolves issues with gcp cloud logging quirks such as field names

go/internal/db/postgres.go

@@ -2,9 +2,10 @@ package db
 
 import (
 	"context"
-	"log/slog"
 	"os"
 
+	"github.com/flowy-live/llink/internal/utils/flog"
+
 	"github.com/jackc/pgx/v5/pgxpool"
 )
 
@@ -21,24 +22,24 @@ func Pool() *pgxpool.Pool {
 func Init() {
 	connString := os.Getenv("LLINK_POSTGRES_CONNECTION_URL")
 	if connString == "" {
-		slog.Error("must provide LLINK_POSTGRES_CONNECTION_URL in env")
+		flog.Error("must provide LLINK_POSTGRES_CONNECTION_URL in env")
 		os.Exit(1)
 	}
 
 	dbpool, err := pgxpool.New(context.Background(), connString)
 	if err != nil {
-		slog.Error("unable to create connection pool", "error", err)
+		flog.Error("unable to create connection pool", "error", err)
 		os.Exit(1)
 	}
 
 	var greeting string
 	err = dbpool.QueryRow(context.Background(), "select 'Hello, world!'").Scan(&greeting)
 	if err != nil {
-		slog.Error("queryRow failed", "error", err)
+		flog.Error("queryRow failed", "error", err)
 		os.Exit(1)
 	}
 
-	slog.Info("successfully connected to database", "greeting", greeting)
+	flog.Info("successfully connected to database", "greeting", greeting)
 
 	db = dbpool
 }