diff --git a/apps/loopover-miner-ui/src/vite-chat-action-plugins.test.ts b/apps/loopover-miner-ui/src/vite-chat-action-plugins.test.ts
new file mode 100644
index 0000000000..8571eb2b7f
--- /dev/null
+++ b/apps/loopover-miner-ui/src/vite-chat-action-plugins.test.ts
@@ -0,0 +1,24 @@
+import { describe, expect, it } from "vitest";
+
+import { chatDiscoverAttemptActionsPlugin } from "../vite-chat-discover-attempt-actions";
+import { chatGovernorActionsPlugin } from "../vite-chat-governor-actions";
+
+// #7228: the app's documented persistent-service path (README + systemd/loopover-miner-ui.service.example) runs
+// `npm run build && npm run preview`, and `vite preview` fires ONLY `configurePreviewServer`, never
+// `configureServer`. These two chat-action plugins used to implement `configureServer` alone, so their governor
+// and discover/attempt actions were silently unregistered in production — unlike every sibling vite-*-api.ts
+// plugin, which registers for both hooks. Lock in that both plugins now wire both hooks.
+describe("chat-action vite plugins register for dev AND preview servers (#7228)", () => {
+  const cases = [
+    ["chatGovernorActionsPlugin", chatGovernorActionsPlugin],
+    ["chatDiscoverAttemptActionsPlugin", chatDiscoverAttemptActionsPlugin],
+  ] as const;
+
+  for (const [label, factory] of cases) {
+    it(`${label} implements both configureServer and configurePreviewServer`, () => {
+      const plugin = factory();
+      expect(plugin.configureServer).toBeTypeOf("function");
+      expect(plugin.configurePreviewServer).toBeTypeOf("function");
+    });
+  }
+});
diff --git a/apps/loopover-miner-ui/vite-chat-discover-attempt-actions.ts b/apps/loopover-miner-ui/vite-chat-discover-attempt-actions.ts
index a9f3a08f7e..aba38e3b53 100644
--- a/apps/loopover-miner-ui/vite-chat-discover-attempt-actions.ts
+++ b/apps/loopover-miner-ui/vite-chat-discover-attempt-actions.ts
@@ -6,12 +6,21 @@ import type { Plugin } from "vite";
 // vite-chat-governor-actions.ts).
 
 export function chatDiscoverAttemptActionsPlugin(): Plugin {
+  // Register on BOTH dev (`configureServer`) and preview (`configurePreviewServer`) start — `vite preview` (the
+  // persistent-service path in this app's README and systemd unit) only runs the preview hook, so without it
+  // these actions were silently missing in production, unlike every sibling vite-*-api.ts plugin (#7228).
+  const register = () => {
+    void import("./src/lib/chat-discover-attempt-actions").then((mod) => {
+      mod.registerDiscoverAttemptChatActions();
+    });
+  };
   return {
     name: "loopover-miner-chat-discover-attempt-actions",
     configureServer() {
-      void import("./src/lib/chat-discover-attempt-actions").then((mod) => {
-        mod.registerDiscoverAttemptChatActions();
-      });
+      register();
+    },
+    configurePreviewServer() {
+      register();
     },
   };
 }
diff --git a/apps/loopover-miner-ui/vite-chat-governor-actions.ts b/apps/loopover-miner-ui/vite-chat-governor-actions.ts
index 6b2e3cf8ab..90a18802c8 100644
--- a/apps/loopover-miner-ui/vite-chat-governor-actions.ts
+++ b/apps/loopover-miner-ui/vite-chat-governor-actions.ts
@@ -5,12 +5,22 @@ import type { Plugin } from "vite";
 // buttons. No new /api/governor/* route is added here.
 
 export function chatGovernorActionsPlugin(): Plugin {
+  // Register into the shared registry on BOTH dev (`configureServer`) and preview (`configurePreviewServer`)
+  // start. `vite preview` — the persistent-service path in this app's README and systemd unit — only runs the
+  // preview hook, so without it these actions were silently missing in production, unlike every sibling
+  // vite-*-api.ts plugin (which registers for both) (#7228).
+  const register = () => {
+    void import("./src/lib/chat-governor-actions").then((mod) => {
+      mod.registerGovernorChatActions();
+    });
+  };
   return {
     name: "loopover-miner-chat-governor-actions",
     configureServer() {
-      void import("./src/lib/chat-governor-actions").then((mod) => {
-        mod.registerGovernorChatActions();
-      });
+      register();
+    },
+    configurePreviewServer() {
+      register();
     },
   };
 }