diff --git a/pyproject.toml b/pyproject.toml
index 6307071..2a52455 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -35,7 +35,7 @@ dependencies = [
 ]
 
 [project.optional-dependencies]
-test = ["pytest>=7.0", "pytest-asyncio>=0.21"]
+test = ["pytest>=7.0", "pytest-asyncio>=0.21", "datasets>=2.14", "librosa"]
 translation = ["nllw"]
 sentence_tokenizer = ["mosestokenizer", "wtpsplit"]
 mlx-whisper = [
@@ -52,6 +52,7 @@ voxtral-hf = [
     "mistral-common[audio]",
     "accelerate>=0.12",
 ]
+listen = ["sounddevice>=0.4.6"]
 cpu = ["torch>=2.0.0", "torchaudio>=2.0.0"]
 cu129 = [
     "torch>=2.0.0",
@@ -117,7 +118,18 @@ Homepage = "https://github.com/QuentinFuxa/WhisperLiveKit"
 
 [project.scripts]
 whisperlivekit-server = "whisperlivekit.basic_server:main"
-wlk = "whisperlivekit.basic_server:main"
+wlk = "whisperlivekit.cli:main"
+wlk-test = "whisperlivekit.test_client:main"
+
+[tool.ruff]
+target-version = "py311"
+line-length = 120
+exclude = [".git", "__pycache__", "build", "dist", ".eggs", ".claude", "scripts", "run_benchmark.py"]
+
+[tool.ruff.lint]
+select = ["E", "F", "W", "I"]
+ignore = ["E501", "E741"]
+per-file-ignores = {"whisperlivekit/whisper/*" = ["F401", "F841", "E731", "W"], "whisperlivekit/simul_whisper/mlx/*" = ["F401", "E731", "W"], "whisperlivekit/simul_whisper/mlx_encoder.py" = ["E731", "F821"], "whisperlivekit/silero_vad_iterator.py" = ["F401"]}
 
 [tool.setuptools]
 packages = [
diff --git a/whisperlivekit/__init__.py b/whisperlivekit/__init__.py
index 5e7e884..66c0e4b 100644
--- a/whisperlivekit/__init__.py
+++ b/whisperlivekit/__init__.py
@@ -1,13 +1,20 @@
 from .audio_processor import AudioProcessor
+from .config import WhisperLiveKitConfig
 from .core import TranscriptionEngine
 from .parse_args import parse_args
+from .test_client import TranscriptionResult, transcribe_audio
+from .test_harness import TestHarness, TestState
 from .web.web_interface import get_inline_ui_html, get_web_interface_html
 
 __all__ = [
+    "WhisperLiveKitConfig",
     "TranscriptionEngine",
     "AudioProcessor",
     "parse_args",
+    "transcribe_audio",
+    "TranscriptionResult",
+    "TestHarness",
+    "TestState",
     "get_web_interface_html",
     "get_inline_ui_html",
-    "download_simulstreaming_backend",
 ]
diff --git a/whisperlivekit/warmup.py b/whisperlivekit/warmup.py
index 0397fe4..1b3e157 100644
--- a/whisperlivekit/warmup.py
+++ b/whisperlivekit/warmup.py
@@ -11,7 +11,7 @@ def load_file(warmup_file=None, timeout=5):
     import librosa
 
     if warmup_file == "":
-        logger.info(f"Skipping warmup.")
+        logger.info("Skipping warmup.")
         return None
 
     # Download JFK sample if not already present
@@ -48,5 +48,9 @@ def warmup_asr(asr, warmup_file=None, timeout=5):
     if audio is None:
         logger.warning("Warmup file unavailable. Skipping ASR warmup.")
         return
-    asr.transcribe(audio)
-    logger.info("ASR model is warmed up.")
\ No newline at end of file
+    try:
+        asr.transcribe(audio)
+    except Exception as e:
+        logger.warning("Warmup transcription failed: %s", e)
+        return
+    logger.info("ASR model is warmed up.")