Reduce release size

Switch to all pure go libraries to no longer depends on libc, allowing
us to use a static container image. Compress binary using UPX for an
addition 7MB

middleware/admin.go

@@ -2,6 +2,8 @@ package middleware
 
 import (
 	"database/sql"
+	"fmt"
+	"log/slog"
 	"time"
 
 	"github.com/gofiber/fiber/v3"
@@ -27,12 +29,18 @@ func AdminMiddleware(db *sql.DB) func(c fiber.Ctx) error {
 			WHERE session_id = ?
 		`, sessionToken).Scan(&session.SessionID, &session.ExpiresAt)
 		if err != nil {
-			return c.Next()
+			slog.Error("Failed to check session", "error", err)
+			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+				"message": fmt.Sprintf("Failed to check session: %v", err),
+			})
 		}
 
 		sessionExpiry, err := time.Parse("2006-01-02 15:04:05-07:00", session.ExpiresAt)
 		if err != nil {
-			return c.Next()
+			slog.Error("Failed to parse session expiry", "error", err)
+			return c.Status(fiber.StatusInternalServerError).JSON(fiber.Map{
+				"message": fmt.Sprintf("Failed to parse session expiry: %v", err),
+			})
 		}
 
 		if sessionExpiry.Before(time.Now()) {