Add Groq transcription support

tests/test_groq.py

@@ -0,0 +1,37 @@
+import json
+import pathlib
+import tempfile
+import unittest
+from unittest import mock
+
+import api
+import config
+import settings_ui
+
+
+class GroqCompatibilityTests(unittest.TestCase):
+    def test_old_config_gains_groq_defaults(self):
+        with tempfile.TemporaryDirectory() as directory:
+            path = pathlib.Path(directory) / "config.json"
+            path.write_text(json.dumps({"transcribe_provider": "openai"}), encoding="utf-8")
+            with mock.patch.object(config, "CONFIG_FILE", path):
+                conf = config.Config()
+        self.assertEqual(conf["groq_base_url"], api.GROQ_URL)
+        self.assertEqual(conf["groq_transcribe_model"], "whisper-large-v3-turbo")
+
+    def test_groq_target_and_timestamp_model(self):
+        with mock.patch.object(config.Config, "load"):
+            conf = config.Config()
+        conf["transcribe_provider"] = "groq"
+        conf["groq_api_key"] = "test-key"
+        target = conf.transcribe_target()
+        self.assertEqual(target.provider, "groq")
+        self.assertEqual(target.base_url, api.GROQ_URL)
+        self.assertEqual(api.timestamp_model(target.provider, target.model), target.model)
+
+    def test_groq_is_available_in_settings(self):
+        self.assertIn(("Groq", "groq"), settings_ui.TRANSCRIBE_PROVIDERS)
+
+
+if __name__ == "__main__":
+    unittest.main()