feat(ui): PolicySelector antd Select mode='multiple' \u2192 shadcn Popover chip-list

- Reuses the established multi-select-with-search popover pattern.
- Preserves policyVersionRef helper and getPolicyOptionEntries export
  (used by other policy files).
- Disabled placeholder ('premium feature') and loading placeholder
  ('Loading policies\u2026') both surface inside the trigger.

Gates: TS \u2713 | Build \u2713.

Co-authored-by: yuneng-jiang <yuneng-berri@users.noreply.github.com>

ui/litellm-dashboard/src/components/policies/PolicySelector.tsx

@@ -1,18 +1,26 @@
-import React, { useEffect, useState } from "react";
-import { Select } from "antd";
+import React, { useEffect, useMemo, useState } from "react";
+import { Badge } from "@/components/ui/badge";
+import { Input } from "@/components/ui/input";
+import {
+  Popover,
+  PopoverContent,
+  PopoverTrigger,
+} from "@/components/ui/popover";
+import { X } from "lucide-react";
+import { cn } from "@/lib/utils";
 import { Policy } from "./types";
 import { getPoliciesList } from "../networking";
 
 /** Prefix for policy version IDs in request body; must match backend POLICY_VERSION_ID_PREFIX. */
 export const POLICY_VERSION_ID_PREFIX = "policy_";
 
-/** Build the value sent in the request body: policy_<uuid> so backend executes this exact version. */
 export function policyVersionRef(policyId: string): string {
   return `${POLICY_VERSION_ID_PREFIX}${policyId}`;
 }
 
-/** Build select options from policies (filter non-draft, label with name/version/status). */
-export function getPolicyOptionEntries(policies: Policy[]): { value: string; label: string }[] {
+export function getPolicyOptionEntries(
+  policies: Policy[],
+): { value: string; label: string }[] {
   return policies
     .filter((policy) => (policy.version_status ?? "draft") !== "draft")
     .map((policy) => {
@@ -39,7 +47,6 @@ interface PolicySelectorProps {
   className?: string;
   accessToken: string;
   disabled?: boolean;
-  /** Called after policies are loaded; use to build value→label map for display elsewhere. */
   onPoliciesLoaded?: (policies: Policy[]) => void;
 }
 
@@ -53,6 +60,8 @@ const PolicySelector: React.FC<PolicySelectorProps> = ({
 }) => {
   const [policies, setPolicies] = useState<Policy[]>([]);
   const [loading, setLoading] = useState(false);
+  const [open, setOpen] = useState(false);
+  const [query, setQuery] = useState("");
 
   useEffect(() => {
     const fetchPolicies = async () => {
@@ -75,31 +84,100 @@ const PolicySelector: React.FC<PolicySelectorProps> = ({
     fetchPolicies();
   }, [accessToken, onPoliciesLoaded]);
 
-  const handlePolicyChange = (selectedValues: string[]) => {
-    onChange(selectedValues);
-  };
+  const options = useMemo(
+    () => getPolicyOptionEntries(policies),
+    [policies],
+  );
+
+  const selected = value ?? [];
+  const filteredOptions = useMemo(
+    () =>
+      options
+        .filter((o) => !selected.includes(o.value))
+        .filter((o) =>
+          query ? o.label.toLowerCase().includes(query.toLowerCase()) : true,
+        ),
+    [options, selected, query],
+  );
+
+  const labelFor = (v: string) =>
+    options.find((o) => o.value === v)?.label ?? v;
+
+  const placeholder = disabled
+    ? "Setting policies is a premium feature."
+    : loading
+      ? "Loading policies…"
+      : "Select policies (production or published versions)";
 
   return (
-    <div>
-      <Select
-        mode="multiple"
-        disabled={disabled}
-        placeholder={
-          disabled
-            ? "Setting policies is a premium feature."
-            : "Select policies (production or published versions)"
-        }
-        onChange={handlePolicyChange}
-        value={value}
-        loading={loading}
-        className={className}
-        allowClear
-        options={getPolicyOptionEntries(policies)}
-        optionFilterProp="label"
-        showSearch
-        style={{ width: "100%" }}
-      />
-    </div>
+    <Popover open={open} onOpenChange={setOpen}>
+      <PopoverTrigger asChild>
+        <button
+          type="button"
+          disabled={disabled || loading}
+          className={cn(
+            "min-h-9 w-full flex flex-wrap items-center gap-1 rounded-md border border-input bg-background px-2 py-1 text-sm text-left disabled:opacity-50",
+            className,
+          )}
+        >
+          {selected.length === 0 ? (
+            <span className="text-muted-foreground px-1">{placeholder}</span>
+          ) : (
+            selected.map((v) => (
+              <Badge
+                key={v}
+                variant="secondary"
+                className="gap-1 inline-flex items-center"
+              >
+                {labelFor(v)}
+                <span
+                  role="button"
+                  tabIndex={0}
+                  onClick={(e) => {
+                    e.stopPropagation();
+                    onChange(selected.filter((s) => s !== v));
+                  }}
+                  className="inline-flex items-center"
+                  aria-label={`Remove ${labelFor(v)}`}
+                >
+                  <X size={12} />
+                </span>
+              </Badge>
+            ))
+          )}
+        </button>
+      </PopoverTrigger>
+      <PopoverContent
+        align="start"
+        className="w-[var(--radix-popover-trigger-width)] p-2"
+      >
+        <Input
+          autoFocus
+          placeholder="Search policies…"
+          value={query}
+          onChange={(e) => setQuery(e.target.value)}
+          className="h-8 mb-2"
+        />
+        <div className="max-h-60 overflow-y-auto">
+          {filteredOptions.length === 0 ? (
+            <div className="py-2 px-3 text-sm text-muted-foreground">
+              No matches
+            </div>
+          ) : (
+            filteredOptions.map((opt) => (
+              <button
+                key={opt.value}
+                type="button"
+                className="w-full text-left px-2 py-1.5 text-sm rounded hover:bg-accent"
+                onClick={() => onChange([...selected, opt.value])}
+              >
+                {opt.label}
+              </button>
+            ))
+          )}
+        </div>
+      </PopoverContent>
+    </Popover>
   );
 };