feat: add account editing functionality with UI modal and backend handler

internal/admin/handler.go

@@ -37,6 +37,7 @@ func RegisterRoutes(r chi.Router, h *Handler) {
 		pr.Post("/proxies/test", h.testProxy)
 		pr.Get("/accounts", h.listAccounts)
 		pr.Post("/accounts", h.addAccount)
+		pr.Put("/accounts/{identifier}", h.updateAccount)
 		pr.Delete("/accounts/{identifier}", h.deleteAccount)
 		pr.Put("/accounts/{identifier}/proxy", h.updateAccountProxy)
 		pr.Get("/queue/status", h.queueStatus)

internal/admin/handler_accounts_crud.go

@@ -116,6 +116,46 @@ func (h *Handler) addAccount(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, http.StatusOK, map[string]any{"success": true, "total_accounts": len(h.Store.Snapshot().Accounts)})
 }
 
+func (h *Handler) updateAccount(w http.ResponseWriter, r *http.Request) {
+	identifier := chi.URLParam(r, "identifier")
+	if decoded, err := url.PathUnescape(identifier); err == nil {
+		identifier = decoded
+	}
+
+	var req map[string]any
+	if err := json.NewDecoder(r.Body).Decode(&req); err != nil {
+		writeJSON(w, http.StatusBadRequest, map[string]any{"detail": "invalid json"})
+		return
+	}
+	name, nameOK := fieldStringOptional(req, "name")
+	remark, remarkOK := fieldStringOptional(req, "remark")
+
+	err := h.Store.Update(func(c *config.Config) error {
+		for i, acc := range c.Accounts {
+			if !accountMatchesIdentifier(acc, identifier) {
+				continue
+			}
+			if nameOK {
+				c.Accounts[i].Name = name
+			}
+			if remarkOK {
+				c.Accounts[i].Remark = remark
+			}
+			return nil
+		}
+		return newRequestError("账号不存在")
+	})
+	if err != nil {
+		if detail, ok := requestErrorDetail(err); ok {
+			writeJSON(w, http.StatusNotFound, map[string]any{"detail": detail})
+			return
+		}
+		writeJSON(w, http.StatusBadRequest, map[string]any{"detail": err.Error()})
+		return
+	}
+	writeJSON(w, http.StatusOK, map[string]any{"success": true, "total_accounts": len(h.Store.Snapshot().Accounts)})
+}
+
 func (h *Handler) deleteAccount(w http.ResponseWriter, r *http.Request) {
 	identifier := chi.URLParam(r, "identifier")
 	if decoded, err := url.PathUnescape(identifier); err == nil {

internal/admin/handler_accounts_crud_test.go

@@ -7,6 +7,8 @@ import (
 	"net/http/httptest"
 	"strings"
 	"testing"
+
+	"github.com/go-chi/chi/v5"
 )
 
 func TestListAccountsPageSizeCapIs5000(t *testing.T) {
@@ -51,3 +53,36 @@ func TestListAccountsPageSizeAbove5000ClampedTo5000(t *testing.T) {
 		t.Fatalf("expected page_size clamped to 5000, got %v", payload["page_size"])
 	}
 }
+
+func TestUpdateAccountMetadataPreservesCredentials(t *testing.T) {
+	h := newAdminTestHandler(t, `{
+		"accounts":[{"email":"u@example.com","name":"old name","remark":"old remark","password":"secret"}]
+	}`)
+
+	r := chi.NewRouter()
+	r.Put("/admin/accounts/{identifier}", h.updateAccount)
+
+	body := []byte(`{"name":"new name","remark":"new remark"}`)
+	req := httptest.NewRequest(http.MethodPut, "/admin/accounts/u@example.com", strings.NewReader(string(body)))
+	rec := httptest.NewRecorder()
+	r.ServeHTTP(rec, req)
+
+	if rec.Code != http.StatusOK {
+		t.Fatalf("unexpected status: %d body=%s", rec.Code, rec.Body.String())
+	}
+
+	snap := h.Store.Snapshot()
+	if len(snap.Accounts) != 1 {
+		t.Fatalf("unexpected accounts after update: %#v", snap.Accounts)
+	}
+	acc := snap.Accounts[0]
+	if acc.Email != "u@example.com" {
+		t.Fatalf("identifier changed unexpectedly: %#v", acc)
+	}
+	if acc.Name != "new name" || acc.Remark != "new remark" {
+		t.Fatalf("metadata update did not persist: %#v", acc)
+	}
+	if acc.Password != "secret" {
+		t.Fatalf("password should be preserved, got %#v", acc)
+	}
+}