fix add missing files

server/internal/api/router.go

@@ -2,11 +2,33 @@ package api
 
 import (
 	"net/http"
+	"os"
+	"path/filepath"
 
 	"github.com/go-chi/chi/v5"
 	"github.com/go-chi/chi/v5/middleware"
 )
 
+const webBuildDir = "./web/build"
+
+// spaHandler serves static files from dir and falls back to index.html for
+// any path that does not match an existing file on disk. This supports
+// SvelteKit (adapter-static, fallback: "index.html") running as a SPA.
+func spaHandler(dir string) http.HandlerFunc {
+	fs := http.FileServer(http.Dir(dir))
+	return func(w http.ResponseWriter, r *http.Request) {
+		// Resolve the requested path inside the build directory.
+		abs := filepath.Join(dir, filepath.Clean("/"+r.URL.Path))
+		if info, err := os.Stat(abs); err == nil && !info.IsDir() {
+			// File exists — serve it normally (assets, icons, _app/*, …).
+			fs.ServeHTTP(w, r)
+			return
+		}
+		// No matching file found: serve the SPA entry point.
+		http.ServeFile(w, r, filepath.Join(dir, "index.html"))
+	}
+}
+
 func NewRouter(h *Handler) http.Handler {
 	r := chi.NewRouter()
 	r.Use(middleware.Logger)
@@ -29,7 +51,7 @@ func NewRouter(h *Handler) http.Handler {
 		})
 	})
 
-	r.Handle("/*", http.FileServer(http.Dir("./web/dist")))
+	r.Handle("/*", spaHandler(webBuildDir))
 
 	return r
 }