feat: searchable select dropdowns + updated levels

- Replace native select with custom searchable dropdown
- Search matches word starts (type 'а' finds 'Анна' or 'Мария Андреева')
- Search input shows for lists with 4+ options
- Updated levels: Начинающий/Без опыта, Продвинутый

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

src/app/admin/_components/FormField.tsx

@@ -1,4 +1,4 @@
-import { useRef, useEffect } from "react";
+import { useRef, useEffect, useState } from "react";
 
 interface InputFieldProps {
   label: string;
@@ -94,25 +94,87 @@ export function SelectField({
   options,
   placeholder,
 }: SelectFieldProps) {
+  const [open, setOpen] = useState(false);
+  const [search, setSearch] = useState("");
+  const containerRef = useRef<HTMLDivElement>(null);
+  const inputRef = useRef<HTMLInputElement>(null);
+
+  const selectedLabel = options.find((o) => o.value === value)?.label || "";
+  const filtered = search
+    ? options.filter((o) => {
+        const q = search.toLowerCase();
+        // Match any word that starts with the search query
+        return o.label.toLowerCase().split(/\s+/).some((word) => word.startsWith(q));
+      })
+    : options;
+
+  // Close on outside click
+  useEffect(() => {
+    if (!open) return;
+    function handle(e: MouseEvent) {
+      if (containerRef.current && !containerRef.current.contains(e.target as Node)) {
+        setOpen(false);
+        setSearch("");
+      }
+    }
+    document.addEventListener("mousedown", handle);
+    return () => document.removeEventListener("mousedown", handle);
+  }, [open]);
+
   return (
-    <div>
+    <div ref={containerRef} className="relative">
       <label className="block text-sm text-neutral-400 mb-1.5">{label}</label>
-      <select
-        value={value}
-        onChange={(e) => onChange(e.target.value)}
-        className="w-full rounded-lg border border-white/10 bg-neutral-800 px-4 py-2.5 text-white outline-none focus:border-gold transition-colors"
+      <button
+        type="button"
+        onClick={() => {
+          setOpen(!open);
+          setSearch("");
+          setTimeout(() => inputRef.current?.focus(), 0);
+        }}
+        className={`w-full rounded-lg border bg-neutral-800 px-4 py-2.5 text-left outline-none transition-colors ${
+          open ? "border-gold" : "border-white/10"
+        } ${value ? "text-white" : "text-neutral-500"}`}
       >
-        {placeholder && (
-          <option value="" disabled>
-            {placeholder}
-          </option>
-        )}
-        {options.map((opt) => (
-          <option key={opt.value} value={opt.value}>
-            {opt.label}
-          </option>
-        ))}
-      </select>
+        {selectedLabel || placeholder || "Выберите..."}
+      </button>
+
+      {open && (
+        <div className="absolute z-50 mt-1 w-full rounded-lg border border-white/10 bg-neutral-800 shadow-xl overflow-hidden">
+          {options.length > 3 && (
+            <div className="p-1.5">
+              <input
+                ref={inputRef}
+                type="text"
+                value={search}
+                onChange={(e) => setSearch(e.target.value)}
+                placeholder="Поиск..."
+                className="w-full rounded-md border border-white/10 bg-neutral-900 px-3 py-1.5 text-sm text-white outline-none focus:border-gold/50 placeholder:text-neutral-600"
+              />
+            </div>
+          )}
+          <div className="max-h-48 overflow-y-auto">
+            {filtered.length === 0 && (
+              <div className="px-4 py-2 text-sm text-neutral-500">Ничего не найдено</div>
+            )}
+            {filtered.map((opt) => (
+              <button
+                key={opt.value}
+                type="button"
+                onClick={() => {
+                  onChange(opt.value);
+                  setOpen(false);
+                  setSearch("");
+                }}
+                className={`w-full px-4 py-2 text-left text-sm transition-colors hover:bg-white/5 ${
+                  opt.value === value ? "text-gold bg-gold/5" : "text-white"
+                }`}
+              >
+                {opt.label}
+              </button>
+            ))}
+          </div>
+        </div>
+      )}
     </div>
   );
 }

src/app/admin/schedule/page.tsx

@@ -27,7 +27,7 @@ const DAY_ORDER: Record<string, number> = Object.fromEntries(
 
 const LEVELS = [
   { value: "", label: "Без уровня" },
-  { value: "Начинающий", label: "Начинающий" },
+  { value: "Начинающий/Без опыта", label: "Начинающий/Без опыта" },
   { value: "Продвинутый", label: "Продвинутый" },
 ];