diff --git a/packages/server/src/server/dictation/dictation-local-replay.local.e2e.test.ts b/packages/server/src/server/dictation/dictation-local-replay.local.e2e.test.ts
new file mode 100644
index 0000000000..fda29ee3d7
--- /dev/null
+++ b/packages/server/src/server/dictation/dictation-local-replay.local.e2e.test.ts
@@ -0,0 +1,86 @@
+import { existsSync, readFileSync } from "node:fs";
+import { homedir } from "node:os";
+import path from "node:path";
+import pino from "pino";
+import { expect, test } from "vitest";
+import {
+  DictationStreamManager,
+  type DictationStreamOutboundMessage,
+} from "./dictation-stream-manager.js";
+import {
+  LocalSpeechWorkerClient,
+  WorkerBackedSpeechToTextProvider,
+} from "../speech/providers/local/worker-client.js";
+import { parsePcm16MonoWav } from "../test-utils/dictation-e2e.js";
+
+const modelsDir =
+  process.env.PASEO_LOCAL_MODELS_DIR ?? path.join(homedir(), ".paseo", "models", "local-speech");
+const enabled =
+  process.env.PASEO_LOCAL_REPLAY_REPRO === "1" &&
+  existsSync(
+    path.join(modelsDir, "sherpa-onnx-nemo-parakeet-tdt-0.6b-v2-int8", "encoder.int8.onnx"),
+  );
+
+// Opt-in diagnostic: actual native inference, no downloaded models or fake worker.
+test.skipIf(!enabled)(
+  "replays 806 retained PCM chunks without timing out local speech requests",
+  async () => {
+    const logger = pino({ level: "silent" });
+    const worker = new LocalSpeechWorkerClient({
+      logger,
+      config: {
+        modelsDir,
+        voiceSttModel: "parakeet-tdt-0.6b-v2-int8",
+        dictationSttModel: "parakeet-tdt-0.6b-v2-int8",
+        voiceTtsModel: "kokoro-en-v0_19",
+      },
+    });
+    let settle!: (message: DictationStreamOutboundMessage) => void;
+    const outcome = new Promise<DictationStreamOutboundMessage>((resolve) => {
+      settle = resolve;
+    });
+    const manager = new DictationStreamManager({
+      logger,
+      sessionId: "local-replay-repro",
+      stt: new WorkerBackedSpeechToTextProvider(worker, "dictationStt"),
+      emit: (message) => {
+        if (message.type === "dictation_stream_final" || message.type === "dictation_stream_error")
+          settle(message);
+      },
+    });
+    const format = "audio/pcm;rate=16000;bits=16";
+    try {
+      const fixture = parsePcm16MonoWav(
+        readFileSync(
+          new URL("../../../../app/e2e/support/fixtures/recording.wav", import.meta.url),
+        ),
+      );
+      expect(fixture.sampleRate).toBe(16000);
+      const audio = Buffer.alloc(25_776_660);
+      for (let offset = 0; offset < audio.length; offset += fixture.pcm16.length) {
+        fixture.pcm16.copy(audio, offset, 0, Math.min(fixture.pcm16.length, audio.length - offset));
+      }
+      await manager.handleStart("buffered-recording", format);
+      let seq = 0;
+      for (let offset = 0; offset < audio.length; offset += 32_000) {
+        await manager.handleChunk({
+          dictationId: "buffered-recording",
+          seq: seq++,
+          audioBase64: audio
+            .subarray(offset, Math.min(audio.length, offset + 32_000))
+            .toString("base64"),
+          format,
+        });
+      }
+      expect(seq).toBe(806);
+      await manager.handleFinish("buffered-recording", seq - 1);
+      const result = await outcome;
+      console.log("Local replay outcome", result);
+      expect(result.type).toBe("dictation_stream_final");
+    } finally {
+      manager.cleanupAll();
+      worker.shutdown();
+    }
+  },
+  120_000,
+);