chore: bump pipecat version and fix tests (#263)

* chore: bump pipecat version and fix tests

* chore: add github workflow to run tests

* fix: install reqirements.dev.txt in test script

* fix: fix api-test action

* feat: add integration test

* test: add integration tests

* test: add test for function call mute strategy

api/services/filesystem/null.py

@@ -0,0 +1,50 @@
+from typing import Any, BinaryIO, Dict, NoReturn, Optional
+
+from .base import BaseFileSystem
+
+
+class NullFileSystem(BaseFileSystem):
+    """No-op filesystem used when storage is not configured (e.g. tests).
+
+    Every operation raises so that any test that exercises storage fails
+    loudly instead of silently succeeding against a stub.
+    """
+
+    def _fail(self, op: str) -> NoReturn:
+        raise RuntimeError(
+            f"NullFileSystem.{op} called — storage is not configured. "
+            "Set ENVIRONMENT to a non-test value or inject a real filesystem fixture."
+        )
+
+    async def acreate_file(self, file_path: str, content: BinaryIO) -> bool:
+        self._fail("acreate_file")
+
+    async def aupload_file(self, local_path: str, destination_path: str) -> bool:
+        self._fail("aupload_file")
+
+    async def aget_signed_url(
+        self,
+        file_path: str,
+        expiration: int = 3600,
+        force_inline: bool = False,
+        use_internal_endpoint: bool = False,
+    ) -> Optional[str]:
+        self._fail("aget_signed_url")
+
+    async def aget_file_metadata(self, file_path: str) -> Optional[Dict[str, Any]]:
+        self._fail("aget_file_metadata")
+
+    async def aget_presigned_put_url(
+        self,
+        file_path: str,
+        expiration: int = 900,
+        content_type: str = "text/csv",
+        max_size: int = 10_485_760,
+    ) -> Optional[str]:
+        self._fail("aget_presigned_put_url")
+
+    async def adownload_file(self, source_path: str, local_path: str) -> bool:
+        self._fail("adownload_file")
+
+    async def acopy_file(self, source_path: str, destination_path: str) -> bool:
+        self._fail("acopy_file")