feat(admin): bot management (list, verify, create, delete)

- Add a Bots admin tab: list/search bots with a dedicated read query
  (users.is_bot, excluded from the accounts list), showing owner and
  system-vs-user type
- Create system bots from the admin via a new bot.create command that
  reuses the existing bot provisioning flow; the token is shown once
- Delete user-created bots via a new bot.delete command backed by a
  dedicated Postgres DeleteBotAccount (revokes sessions, purges private
  state, releases username, drops the bots row, tombstones the user);
  system service bots are rejected
- Verified badge toggling reuses the existing set-verified command
- All write paths go through the dry-run/confirm + audit command pipeline
- Rebuild dist bundle

cmd/telesrv-admin/web/src/pages/Routes.tsx

@@ -3,6 +3,8 @@ import { AccountDetailPage } from "./AccountDetailPage";
 import { AccountsPage } from "./AccountsPage";
 import { ChannelDetailPage } from "./ChannelDetailPage";
 import { ChannelsPage } from "./ChannelsPage";
+import { BotDetailPage } from "./BotDetailPage";
+import { BotsPage } from "./BotsPage";
 import { Dashboard } from "./Dashboard";
 import { GroupMessageDetailPage } from "./GroupMessageDetailPage";
 import { GroupMessagesPage } from "./GroupMessagesPage";
@@ -13,17 +15,24 @@ import { GiftsPage } from "./GiftsPage";
 export function Routes({ route, navigate }: { route: RouteState; navigate: Navigate }) {
   const accountID = route.path.match(/^\/accounts\/(\d+)$/)?.[1];
   const channelID = route.path.match(/^\/channels\/(\d+)$/)?.[1];
+  const botID = route.path.match(/^\/bots\/(\d+)$/)?.[1];
   if (accountID) {
     return <AccountDetailPage id={Number(accountID)} navigate={navigate} />;
   }
   if (channelID) {
     return <ChannelDetailPage id={Number(channelID)} navigate={navigate} />;
   }
+  if (botID) {
+    return <BotDetailPage id={Number(botID)} navigate={navigate} />;
+  }
   if (route.path === "/accounts") {
     return <AccountsPage navigate={navigate} />;
   }
   if (route.path === "/channels") {
     return <ChannelsPage navigate={navigate} />;
+  }
+  if (route.path === "/bots") {
+    return <BotsPage navigate={navigate} />;
   }
 	if (route.path === "/gifts") {
 		return <GiftsPage />;