quite a lot of things

internal/api/handlers.go

@@ -0,0 +1,28 @@
+package api
+
+import (
+	"billit/internal/database"
+	"net/http"
+
+	"github.com/labstack/echo/v4"
+)
+
+// Handlers holds dependencies for API handlers
+type Handlers struct {
+	db database.Service
+}
+
+// NewHandlers creates API handlers with db access
+func NewHandlers(db database.Service) *Handlers {
+	return &Handlers{db: db}
+}
+
+// HealthHandler returns the health status
+func (h *Handlers) HealthHandler(c echo.Context) error {
+	return c.JSON(http.StatusOK, h.db.Health())
+}
+
+// Note: Product and Invoice API endpoints are disabled.
+// All operations go through the authenticated web UI.
+// To re-enable API access, add API authentication and update these handlers
+// to accept userID from authenticated API requests.