Start on live transcription and python sidecar (faster-whisper)

tests/models.test.ts

@@ -6,6 +6,7 @@ import {
   estimateDefaultDownloadBytes,
   estimateDownloadBytes,
   formatModelSize,
+  getFasterWhisperModel,
   getModel,
   resolveDefaultDtype,
 } from "../src/lib/models";
@@ -59,6 +60,21 @@ describe("MODELS catalog", () => {
     expect(getModel(DEFAULT_MODEL_ID)).toBeDefined();
     expect(getModel("onnx-community/whisper-nonexistent")).toBeUndefined();
   });
+
+  test("every model maps to a faster-whisper name for the server engine (D-013)", () => {
+    for (const model of MODELS) {
+      // The onnx-community ids and faster-whisper's aliases share the same
+      // size suffix ("tiny.en", …, "large-v3-turbo"); keeping them aligned is
+      // what lets one catalog drive both engines.
+      expect(model.fasterWhisperModel).toBe(
+        model.id.replace("onnx-community/whisper-", ""),
+      );
+    }
+    expect(getFasterWhisperModel(DEFAULT_MODEL_ID)).toBe("tiny.en");
+    // Unknown ids stay undefined so /api/transcribe can answer 400 instead of
+    // forwarding arbitrary strings to the sidecar.
+    expect(getFasterWhisperModel("someone/some-model")).toBeUndefined();
+  });
 });
 
 describe("resolveDefaultDtype", () => {