chore: remove shadow policy machinery (ADR-0013 step 10)

Deletes shadowPolicies map, getShadowPolicies, setPolicyActive from
recommender.ts; removes /api/admin/policies routes from admin.ts; removes
getPolicies, togglePolicy, PolicyInfo from admin api.ts; removes the
policy toggle section from the ops page.

168 API tests pass.

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

apps/admin/src/app/ops/page.tsx

@@ -1,32 +1,17 @@
 'use client';
 
-import { useEffect, useState } from 'react';
+import { useState } from 'react';
 import { AdminShell } from '@/components/AdminShell';
-import { getPolicies, togglePolicy, replaySignal, PolicyInfo } from '@/lib/api';
+import { replaySignal } from '@/lib/api';
 
 const VALID_SUBJECTS = ['signals.tip.served', 'signals.tip.feedback', 'signals.task.synced'];
 
 export default function OpsPage() {
-  const [policies, setPolicies] = useState<PolicyInfo[]>([]);
   const [replaySubject, setReplaySubject] = useState(VALID_SUBJECTS[0]);
   const [replayPayload, setReplayPayload] = useState('{\n  "userId": "",\n  "tipId": ""\n}');
   const [msg, setMsg] = useState('');
   const [error, setError] = useState('');
 
-  useEffect(() => {
-    getPolicies().then((r) => setPolicies(r.policies)).catch(() => {});
-  }, []);
-
-  const handleToggle = async (name: string, active: boolean) => {
-    try {
-      await togglePolicy(name, active);
-      setPolicies((prev) => prev.map((p) => p.name === name ? { ...p, active } : p));
-      setMsg(`Policy "${name}" ${active ? 'enabled' : 'disabled'}.`);
-    } catch (e: any) {
-      setError(e.message);
-    }
-  };
-
   const handleReplay = async () => {
     let payload: Record<string, unknown>;
     try {
@@ -50,36 +35,14 @@ export default function OpsPage() {
         <div>
           <h1 className="text-xl font-semibold">Ops</h1>
           <p className="text-sm text-gray-500 mt-1">
-            Live system controls — toggle shadow recommendation policies, replay past signals
-            for backfill or debugging, and find per-user actions (token revoke, bandit reset)
-            on the <a href="/users" className="text-indigo-400 hover:underline">Users page</a>.
+            Live system controls — replay past signals for backfill or debugging, and find
+            per-user actions (token revoke) on the{' '}
+            <a href="/users" className="text-indigo-400 hover:underline">Users page</a>.
           </p>
         </div>
         {msg && <p className="text-green-400 text-sm">{msg}</p>}
         {error && <p className="text-red-400 text-sm">{error}</p>}
 
-        {/* Policy toggles */}
-        <section className="space-y-3">
-          <h2 className="text-base font-medium text-gray-300">Policies</h2>
-          {policies.length === 0 ? (
-            <p className="text-gray-500 text-sm">No shadow policies registered. Shadow policies can be added to the recommender source.</p>
-          ) : (
-            <div className="space-y-2">
-              {policies.map((p) => (
-                <div key={p.name} className="flex items-center justify-between bg-gray-900 border border-gray-800 rounded p-3">
-                  <span className="text-sm text-gray-300 font-mono">{p.name}</span>
-                  <button
-                    onClick={() => handleToggle(p.name, !p.active)}
-                    className={`px-3 py-1 rounded text-xs ${p.active ? 'bg-green-800 text-green-200' : 'bg-gray-800 text-gray-400'}`}
-                  >
-                    {p.active ? 'Active' : 'Disabled'}
-                  </button>
-                </div>
-              ))}
-            </div>
-          )}
-        </section>
-
         {/* Replay signal */}
         <section className="space-y-3">
           <h2 className="text-base font-medium text-gray-300">Replay signal</h2>

apps/admin/src/lib/api.ts

@@ -91,10 +91,6 @@ export interface HealthStatus {
   services: { name: string; status: string; latencyMs: number }[];
 }
 
-export interface PolicyInfo {
-  name: string;
-  active: boolean;
-}
 
 export interface SavedQuery {
   id: string;
@@ -223,16 +219,6 @@ export function getHealth() {
   return apiFetch<HealthStatus>('/admin/health');
 }
 
-export function getPolicies() {
-  return apiFetch<{ policies: PolicyInfo[] }>('/admin/policies');
-}
-
-export function togglePolicy(name: string, active: boolean) {
-  return apiFetch<{ ok: boolean }>(`/admin/policies/${name}/toggle`, {
-    method: 'POST',
-    body: JSON.stringify({ active }),
-  });
-}
 
 export function replaySignal(subject: string, payload: Record<string, unknown>) {
   return apiFetch<{ ok: boolean }>('/admin/replay-signal', {