Bump version to 0.1.2; update logging paths and enhance CLI with version command

tests/test_routes.py

@@ -5,6 +5,7 @@ import logging
 from botocore.exceptions import ClientError
 from fastapi.testclient import TestClient
 
+from nexus_claude_api.errors import NexusClaudeError
 from nexus_claude_api.config import Settings
 from nexus_claude_api.nexus_client import _map_client_error
 from nexus_claude_api.server import create_app
@@ -52,6 +53,21 @@ class AccessDeniedNexusClient:
         )
 
 
+class StreamErrorNexusClient:
+    def converse_stream(self, request: dict, *, correlation_id: str | None = None):
+        assert correlation_id
+
+        def events():
+            yield {"contentBlockDelta": {"contentBlockIndex": 0, "delta": {"text": "Hi"}}}
+            raise NexusClaudeError(
+                "stream failed",
+                status_code=502,
+                error_type="api_error",
+            )
+
+        return events()
+
+
 def client(nexus_client: object | None = None) -> TestClient:
     settings = Settings.from_values(api_key="test", require_api_key=False)
     return TestClient(
@@ -183,6 +199,26 @@ def test_messages_stream() -> None:
     assert "event: message_stop" in body
 
 
+def test_messages_stream_returns_sse_error_when_stream_iteration_fails() -> None:
+    with client(StreamErrorNexusClient()).stream(
+        "POST",
+        "/v1/messages",
+        json={
+            "model": "claude-opus-4.6",
+            "messages": [{"role": "user", "content": "Hello"}],
+            "max_tokens": 32,
+            "stream": True,
+        },
+    ) as response:
+        body = response.read().decode("utf-8")
+
+    assert response.status_code == 200
+    assert "event: content_block_delta" in body
+    assert "event: error" in body
+    assert "stream failed" in body
+    assert "correlation_id" in body
+
+
 def test_count_tokens() -> None:
     response = client().post(
         "/v1/messages/count_tokens",