feat: add NER annotation step and integrate into pipeline

core/config/annotation_config.py

@@ -0,0 +1,29 @@
+from pydantic import BaseModel
+
+class NERConfig(BaseModel):
+    """NER annotation configuration"""
+
+    model_name: str = "drc_names_ner"
+    retry_attempts: int = 3
+
+
+class LLMConfig(BaseModel):
+    """LLM annotation configuration"""
+
+    model_name: str = "mistral:7b"
+    requests_per_minute: int = 60
+    requests_per_second: int = 2
+    retry_attempts: int = 3
+    timeout_seconds: int = 30
+    max_concurrent_requests: int = 2
+    enable_rate_limiting: bool = False
+
+
+class AnnotationConfig(BaseModel):
+    """Base class for annotation configurations"""
+
+    llm: LLMConfig = LLMConfig()
+    ner: NERConfig = NERConfig()
+
+    class Config:
+        arbitrary_types_allowed = True