feat: CRUD UI — race form, detail fields, edit/delete actions

- RaceDetailsPage: show all non-null fields (officialUrl, startTime, clusterSchedule, bibPickup)

- RaceDetailsPage: add edit link and delete button with confirmation banner

- RaceFormPage: universal create/edit form with validation, auto-generated id for new races

- Router: add /races/new and /races/:raceId/edit routes

- AppLayout: add navigation link to create new race

- CSS: buttons (primary/secondary/danger), form fields, confirm banner, responsive layout

Made-with: Cursor

frontend/src/pages/RaceDetailsPage.tsx

@@ -1,6 +1,6 @@
-import { useEffect, useMemo, useState } from "react";
-import { Link, useParams } from "react-router-dom";
-import { ApiError, getRaceById } from "../api";
+import { useCallback, useEffect, useMemo, useState } from "react";
+import { Link, useNavigate, useParams } from "react-router-dom";
+import { ApiError, deleteRace, getRaceById } from "../api";
 import {
   formatDistance,
   formatRaceDate,
@@ -17,11 +17,44 @@ function getErrorMessage(error: unknown): string {
   return "Не удалось загрузить карточку старта.";
 }
 
+function DetailItem(props: { label: string; value: string | null | undefined }): JSX.Element | null {
+  const text = props.value?.trim();
+  if (!text) {
+    return null;
+  }
+  return (
+    <div className="race-details-meta__item">
+      <dt className="race-details-meta__key">{props.label}</dt>
+      <dd className="race-details-meta__value">{text}</dd>
+    </div>
+  );
+}
+
+function DetailLink(props: { label: string; url: string | null | undefined }): JSX.Element | null {
+  const href = props.url?.trim();
+  if (!href) {
+    return null;
+  }
+  return (
+    <div className="race-details-meta__item">
+      <dt className="race-details-meta__key">{props.label}</dt>
+      <dd className="race-details-meta__value">
+        <a href={href} target="_blank" rel="noopener noreferrer" className="race-details-meta__link">
+          {href}
+        </a>
+      </dd>
+    </div>
+  );
+}
+
 export function RaceDetailsPage(): JSX.Element {
   const { raceId } = useParams<{ raceId: string }>();
+  const navigate = useNavigate();
   const [race, setRace] = useState<Race | null>(null);
   const [isLoading, setIsLoading] = useState<boolean>(true);
   const [errorMessage, setErrorMessage] = useState<string | null>(null);
+  const [isDeleting, setIsDeleting] = useState<boolean>(false);
+  const [showDeleteConfirm, setShowDeleteConfirm] = useState<boolean>(false);
 
   useEffect(() => {
     let isMounted = true;
@@ -65,6 +98,22 @@ export function RaceDetailsPage(): JSX.Element {
     return getPaceLabel(race.finishTime, race.distanceKm);
   }, [race]);
 
+  const handleDelete = useCallback(async () => {
+    if (!raceId) {
+      return;
+    }
+    setIsDeleting(true);
+    try {
+      await deleteRace(raceId);
+      navigate("/races", { replace: true });
+    } catch (error) {
+      setErrorMessage(error instanceof ApiError ? error.message : "Не удалось удалить старт.");
+      setShowDeleteConfirm(false);
+    } finally {
+      setIsDeleting(false);
+    }
+  }, [raceId, navigate]);
+
   if (isLoading) {
     return (
       <section className="page page--race-details" aria-busy="true">
@@ -100,6 +149,43 @@ export function RaceDetailsPage(): JSX.Element {
         <span className={getRaceStatusClassName(race.status)}>{getRaceStatusLabel(race.status)}</span>
       </div>
 
+      <div className="race-details-actions">
+        <Link className="btn btn--primary" to={`/races/${race.id}/edit`}>
+          Редактировать
+        </Link>
+        <button
+          className="btn btn--danger"
+          type="button"
+          onClick={() => setShowDeleteConfirm(true)}
+        >
+          Удалить
+        </button>
+      </div>
+
+      {showDeleteConfirm ? (
+        <div className="confirm-banner" role="alertdialog" aria-label="Подтверждение удаления">
+          <p className="confirm-banner__text">Удалить «{race.title}»? Это действие необратимо.</p>
+          <div className="confirm-banner__actions">
+            <button
+              className="btn btn--danger"
+              type="button"
+              disabled={isDeleting}
+              onClick={handleDelete}
+            >
+              {isDeleting ? "Удаляем…" : "Да, удалить"}
+            </button>
+            <button
+              className="btn btn--secondary"
+              type="button"
+              disabled={isDeleting}
+              onClick={() => setShowDeleteConfirm(false)}
+            >
+              Отмена
+            </button>
+          </div>
+        </div>
+      ) : null}
+
       <div className="race-details-grid">
         <article className="race-details-card">
           <h2 className="race-details-card__title">Основная информация</h2>
@@ -116,11 +202,16 @@ export function RaceDetailsPage(): JSX.Element {
               <dt className="race-details-meta__key">Статус</dt>
               <dd className="race-details-meta__value">{getRaceStatusLabel(race.status)}</dd>
             </div>
+            <DetailLink label="Сайт организатора" url={race.officialUrl} />
+            <DetailItem label="Время старта" value={race.startTime} />
+            <DetailItem label="Расписание кластеров" value={race.clusterSchedule} />
+            <DetailItem label="Выдача номеров" value={race.bibPickup} />
+            <DetailItem label="Стартовый номер" value={race.bibNumber} />
           </dl>
         </article>
 
         <article className="race-details-card">
-          <h2 className="race-details-card__title">Completed-метрики</h2>
+          <h2 className="race-details-card__title">Результаты</h2>
           {isCompleted ? (
             <dl className="race-details-meta">
               <div className="race-details-meta__item">
@@ -131,16 +222,7 @@ export function RaceDetailsPage(): JSX.Element {
                 <dt className="race-details-meta__key">Темп</dt>
                 <dd className="race-details-meta__value">{paceLabel ?? "не удалось вычислить"}</dd>
               </div>
-              <div className="race-details-meta__item">
-                <dt className="race-details-meta__key">Место</dt>
-                <dd className="race-details-meta__value">
-                  {race.finishPlace?.trim() ? race.finishPlace : "не указано"}
-                </dd>
-              </div>
-              <div className="race-details-meta__item">
-                <dt className="race-details-meta__key">Стартовый номер</dt>
-                <dd className="race-details-meta__value">{race.bibNumber ?? "не указан"}</dd>
-              </div>
+              <DetailItem label="Место" value={race.finishPlace} />
             </dl>
           ) : (
             <p className="race-details-card__empty">

frontend/src/pages/RaceFormPage.tsx

@@ -0,0 +1,421 @@
+import { useCallback, useEffect, useState } from "react";
+import { Link, useNavigate, useParams } from "react-router-dom";
+import { ApiError, createRace, getRaceById, updateRace } from "../api";
+import type { CreateRacePayload, Race, RaceStatus, UpdateRacePayload } from "../api";
+
+function slugify(text: string): string {
+  return text
+    .toLowerCase()
+    .replace(/[«»"]/g, "")
+    .replace(/[^a-zа-яё0-9]+/gi, "-")
+    .replace(/(^-|-$)/g, "")
+    .substring(0, 60);
+}
+
+function generateId(date: string, title: string): string {
+  return `${date}-${slugify(title)}`;
+}
+
+const STATUS_OPTIONS: { value: string; label: string }[] = [
+  { value: "", label: "Не указан" },
+  { value: "planned", label: "Планирую" },
+  { value: "registered", label: "Зарегистрирован" },
+  { value: "completed", label: "Пробежал" },
+];
+
+interface FormData {
+  date: string;
+  title: string;
+  distanceKm: string;
+  status: string;
+  officialUrl: string;
+  startTime: string;
+  clusterSchedule: string;
+  bibPickup: string;
+  bibNumber: string;
+  finishTime: string;
+  finishPlace: string;
+  notes: string;
+}
+
+const EMPTY_FORM: FormData = {
+  date: "",
+  title: "",
+  distanceKm: "",
+  status: "planned",
+  officialUrl: "",
+  startTime: "",
+  clusterSchedule: "",
+  bibPickup: "",
+  bibNumber: "",
+  finishTime: "",
+  finishPlace: "",
+  notes: "",
+};
+
+function raceToFormData(race: Race): FormData {
+  return {
+    date: race.date,
+    title: race.title,
+    distanceKm: String(race.distanceKm),
+    status: race.status ?? "",
+    officialUrl: race.officialUrl ?? "",
+    startTime: race.startTime ?? "",
+    clusterSchedule: race.clusterSchedule ?? "",
+    bibPickup: race.bibPickup ?? "",
+    bibNumber: race.bibNumber ?? "",
+    finishTime: race.finishTime ?? "",
+    finishPlace: race.finishPlace ?? "",
+    notes: race.notes ?? "",
+  };
+}
+
+function emptyToNull(value: string): string | null {
+  const trimmed = value.trim();
+  return trimmed === "" ? null : trimmed;
+}
+
+function validateForm(form: FormData): string[] {
+  const errors: string[] = [];
+  if (!form.date.trim()) {
+    errors.push("Дата обязательна.");
+  }
+  if (!form.title.trim()) {
+    errors.push("Название обязательно.");
+  }
+  const km = parseFloat(form.distanceKm);
+  if (Number.isNaN(km) || km <= 0) {
+    errors.push("Дистанция должна быть положительным числом.");
+  }
+  return errors;
+}
+
+export function RaceFormPage(): JSX.Element {
+  const { raceId } = useParams<{ raceId: string }>();
+  const navigate = useNavigate();
+  const isEditMode = Boolean(raceId);
+
+  const [form, setForm] = useState<FormData>(EMPTY_FORM);
+  const [isLoading, setIsLoading] = useState<boolean>(isEditMode);
+  const [isSaving, setIsSaving] = useState<boolean>(false);
+  const [errorMessage, setErrorMessage] = useState<string | null>(null);
+  const [validationErrors, setValidationErrors] = useState<string[]>([]);
+
+  useEffect(() => {
+    if (!raceId) {
+      return;
+    }
+
+    let isMounted = true;
+
+    async function loadRace(): Promise<void> {
+      try {
+        const race = await getRaceById(raceId!);
+        if (!isMounted) {
+          return;
+        }
+        setForm(raceToFormData(race));
+        setErrorMessage(null);
+      } catch (error) {
+        if (!isMounted) {
+          return;
+        }
+        setErrorMessage(error instanceof ApiError ? error.message : "Не удалось загрузить данные старта.");
+      } finally {
+        if (isMounted) {
+          setIsLoading(false);
+        }
+      }
+    }
+
+    void loadRace();
+    return () => {
+      isMounted = false;
+    };
+  }, [raceId]);
+
+  const handleChange = useCallback(
+    (event: React.ChangeEvent<HTMLInputElement | HTMLSelectElement | HTMLTextAreaElement>) => {
+      const { name, value } = event.target;
+      setForm((prev) => ({ ...prev, [name]: value }));
+    },
+    [],
+  );
+
+  const handleSubmit = useCallback(
+    async (event: React.FormEvent) => {
+      event.preventDefault();
+      setErrorMessage(null);
+
+      const errors = validateForm(form);
+      setValidationErrors(errors);
+      if (errors.length > 0) {
+        return;
+      }
+
+      setIsSaving(true);
+
+      try {
+        const statusValue: RaceStatus | null =
+          form.status === "planned" || form.status === "registered" || form.status === "completed"
+            ? form.status
+            : null;
+
+        if (isEditMode && raceId) {
+          const payload: UpdateRacePayload = {
+            date: form.date.trim(),
+            title: form.title.trim(),
+            distanceKm: parseFloat(form.distanceKm),
+            status: statusValue,
+            officialUrl: emptyToNull(form.officialUrl),
+            startTime: emptyToNull(form.startTime),
+            clusterSchedule: emptyToNull(form.clusterSchedule),
+            bibPickup: emptyToNull(form.bibPickup),
+            bibNumber: emptyToNull(form.bibNumber),
+            finishTime: emptyToNull(form.finishTime),
+            finishPlace: emptyToNull(form.finishPlace),
+            notes: emptyToNull(form.notes),
+          };
+
+          await updateRace(raceId, payload);
+          navigate(`/races/${raceId}`);
+        } else {
+          const id = generateId(form.date.trim(), form.title.trim());
+          const payload: CreateRacePayload = {
+            id,
+            date: form.date.trim(),
+            title: form.title.trim(),
+            distanceKm: parseFloat(form.distanceKm),
+            status: statusValue,
+            officialUrl: emptyToNull(form.officialUrl),
+            startTime: emptyToNull(form.startTime),
+            clusterSchedule: emptyToNull(form.clusterSchedule),
+            bibPickup: emptyToNull(form.bibPickup),
+            bibNumber: emptyToNull(form.bibNumber),
+            finishTime: emptyToNull(form.finishTime),
+            finishPlace: emptyToNull(form.finishPlace),
+            notes: emptyToNull(form.notes),
+          };
+
+          const created = await createRace(payload);
+          navigate(`/races/${created.id}`);
+        }
+      } catch (error) {
+        if (error instanceof ApiError) {
+          setErrorMessage(error.details.length > 0 ? error.details.join("; ") : error.message);
+        } else {
+          setErrorMessage("Произошла ошибка при сохранении.");
+        }
+      } finally {
+        setIsSaving(false);
+      }
+    },
+    [form, isEditMode, raceId, navigate],
+  );
+
+  const pageTitle = isEditMode ? "Редактирование старта" : "Новый старт";
+
+  if (isLoading) {
+    return (
+      <section className="page page--race-form" aria-busy="true">
+        <h1 className="page__title">{pageTitle}</h1>
+        <p className="page__subtitle">Загружаем данные...</p>
+      </section>
+    );
+  }
+
+  return (
+    <section className="page page--race-form">
+      <h1 className="page__title">{pageTitle}</h1>
+
+      {errorMessage ? (
+        <p className="page__subtitle page__subtitle--error" role="alert">{errorMessage}</p>
+      ) : null}
+
+      {validationErrors.length > 0 ? (
+        <ul className="form-errors" role="alert">
+          {validationErrors.map((msg) => (
+            <li key={msg} className="form-errors__item">{msg}</li>
+          ))}
+        </ul>
+      ) : null}
+
+      <form className="race-form" onSubmit={handleSubmit} noValidate>
+        <fieldset className="race-form__group">
+          <legend className="race-form__legend">Основная информация</legend>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Дата *</span>
+            <input
+              className="race-form__input"
+              type="date"
+              name="date"
+              value={form.date}
+              onChange={handleChange}
+              required
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Название *</span>
+            <input
+              className="race-form__input"
+              type="text"
+              name="title"
+              value={form.title}
+              onChange={handleChange}
+              required
+              placeholder="Казанский марафон"
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Дистанция, км *</span>
+            <input
+              className="race-form__input"
+              type="number"
+              name="distanceKm"
+              value={form.distanceKm}
+              onChange={handleChange}
+              required
+              min="0.1"
+              step="0.001"
+              placeholder="21.1"
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Статус</span>
+            <select
+              className="race-form__input"
+              name="status"
+              value={form.status}
+              onChange={handleChange}
+            >
+              {STATUS_OPTIONS.map((opt) => (
+                <option key={opt.value} value={opt.value}>{opt.label}</option>
+              ))}
+            </select>
+          </label>
+        </fieldset>
+
+        <fieldset className="race-form__group">
+          <legend className="race-form__legend">Организация</legend>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Сайт организатора</span>
+            <input
+              className="race-form__input"
+              type="url"
+              name="officialUrl"
+              value={form.officialUrl}
+              onChange={handleChange}
+              placeholder="https://example.com"
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Время старта</span>
+            <input
+              className="race-form__input"
+              type="text"
+              name="startTime"
+              value={form.startTime}
+              onChange={handleChange}
+              placeholder="09:30"
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Расписание кластеров</span>
+            <input
+              className="race-form__input"
+              type="text"
+              name="clusterSchedule"
+              value={form.clusterSchedule}
+              onChange={handleChange}
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Выдача номеров</span>
+            <input
+              className="race-form__input"
+              type="text"
+              name="bibPickup"
+              value={form.bibPickup}
+              onChange={handleChange}
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Стартовый номер</span>
+            <input
+              className="race-form__input"
+              type="text"
+              name="bibNumber"
+              value={form.bibNumber}
+              onChange={handleChange}
+              placeholder="1234"
+            />
+          </label>
+        </fieldset>
+
+        <fieldset className="race-form__group">
+          <legend className="race-form__legend">Результаты</legend>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Финишное время</span>
+            <input
+              className="race-form__input"
+              type="text"
+              name="finishTime"
+              value={form.finishTime}
+              onChange={handleChange}
+              placeholder="1:45:30"
+            />
+          </label>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Место на финише</span>
+            <input
+              className="race-form__input"
+              type="text"
+              name="finishPlace"
+              value={form.finishPlace}
+              onChange={handleChange}
+              placeholder="12/340"
+            />
+          </label>
+        </fieldset>
+
+        <fieldset className="race-form__group">
+          <legend className="race-form__legend">Дополнительно</legend>
+
+          <label className="race-form__field">
+            <span className="race-form__label">Заметки</span>
+            <textarea
+              className="race-form__input race-form__input--textarea"
+              name="notes"
+              value={form.notes}
+              onChange={handleChange}
+              rows={4}
+            />
+          </label>
+        </fieldset>
+
+        <div className="race-form__actions">
+          <button className="btn btn--primary" type="submit" disabled={isSaving}>
+            {isSaving ? "Сохраняем…" : isEditMode ? "Сохранить" : "Создать"}
+          </button>
+          <Link
+            className="btn btn--secondary"
+            to={isEditMode && raceId ? `/races/${raceId}` : "/races"}
+          >
+            Отмена
+          </Link>
+        </div>
+      </form>
+    </section>
+  );
+}