feat: expose status field on POST /memory + persist_llm_candidates script

The API endpoint now passes the request's status field through to
create_memory() so external scripts can create candidate memories
directly without going through the extract endpoint. Default remains
'active' for backward compatibility.

persist_llm_candidates.py reads a saved extractor eval baseline
JSON (e.g. the Day 4 LLM run) and POSTs each candidate to Dalidou
with status=candidate. Safe to re-run — duplicate content returns
400 which the script counts as 'skipped'.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

src/atocore/api/routes.py

@@ -141,6 +141,7 @@ class MemoryCreateRequest(BaseModel):
     content: str
     project: str = ""
     confidence: float = 1.0
+    status: str = "active"
 
 
 class MemoryUpdateRequest(BaseModel):
@@ -344,6 +345,7 @@ def api_create_memory(req: MemoryCreateRequest) -> dict:
             content=req.content,
             project=req.project,
             confidence=req.confidence,
+            status=req.status,
         )
     except ValueError as e:
         raise HTTPException(status_code=400, detail=str(e))