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

src/nexus_claude_api/routes/messages.py

@@ -2,7 +2,8 @@ from __future__ import annotations
 
 import logging
 import uuid
-from typing import Annotated
+from collections.abc import Iterable, Iterator
+from typing import Annotated, Any
 
 from fastapi import APIRouter, Depends, Request
 from fastapi.responses import JSONResponse, Response, StreamingResponse
@@ -60,6 +61,46 @@ def normalize_legacy_system_messages(raw: object) -> object:
     return normalized
 
 
+def anthropic_sse_stream(
+    stream: Iterable[dict[str, Any]],
+    *,
+    model: str,
+    correlation_id: str,
+) -> Iterator[str]:
+    try:
+        for event in bedrock_stream_to_anthropic_events(stream, model=model):
+            yield sse_frame(event)
+    except NexusClaudeError as exc:
+        yield sse_frame(
+            {
+                "type": "error",
+                "error": {
+                    "type": exc.error_type,
+                    "message": f"{exc.message} [correlation_id={correlation_id}]",
+                    "correlation_id": correlation_id,
+                },
+            }
+        )
+    except Exception:
+        logger.exception(
+            "anthropic_messages_stream_error correlation_id=%s",
+            correlation_id,
+        )
+        yield sse_frame(
+            {
+                "type": "error",
+                "error": {
+                    "type": "api_error",
+                    "message": (
+                        "Unexpected error while streaming response "
+                        f"[correlation_id={correlation_id}]"
+                    ),
+                    "correlation_id": correlation_id,
+                },
+            }
+        )
+
+
 @router.post("/v1/messages", response_model=None)
 async def create_message(
     request: Request,
@@ -85,12 +126,10 @@ async def create_message(
                 correlation_id=correlation_id,
             )
             return StreamingResponse(
-                (
-                    sse_frame(event)
-                    for event in bedrock_stream_to_anthropic_events(
-                        stream,
-                        model=payload.model,
-                    )
+                anthropic_sse_stream(
+                    stream,
+                    model=payload.model,
+                    correlation_id=correlation_id,
                 ),
                 media_type="text/event-stream",
             )