Revert "Implement path-based secret loading"

This reverts commit 8ea8c7195f.

app/server/web/agent.ts

@@ -10,16 +10,12 @@ import { HostInfo } from '~/types';
 import log from '~/utils/log';
 
 export async function loadAgentSocket(
-	authkey: string | null,
+	authkey: string,
 	path: string,
 	ttl: number,
 ) {
-	if (authkey === null || authkey.length === 0) {
-		log.warn(
-			'agent',
-			'Agent authkey is not configured or is empty, agent support will be disabled.',
-		);
-		return undefined;
+	if (authkey.length === 0) {
+		return;
 	}
 
 	try {