fix: fix LANGCHAIN_TRACING for LANGSMITH monitoring

.env.example

@@ -16,7 +16,7 @@ TAVILY_API_KEY=your_tavily_api_key_here
 # Sign up: https://smith.langchain.com
 # Free tier: 5K traces/month
 LANGSMITH_API_KEY=your_langsmith_key_here
-LANGCHAIN_TRACING_V2=true
+LANGCHAIN_TRACING=true
 LANGCHAIN_PROJECT=market-intelligence-prod
 LANGCHAIN_ENDPOINT=https://api.smith.langchain.com
 

conftest.py

@@ -15,5 +15,5 @@ def mock_env(monkeypatch):
     monkeypatch.setenv("OPENROUTER_API_KEY", "sk-mock-key")
     monkeypatch.setenv("TAVILY_API_KEY", "tvly-mock-key")
     monkeypatch.setenv("LANGSMITH_API_KEY", "lsv2-mock-key")
-    monkeypatch.setenv("LANGCHAIN_TRACING_V2", "false")
+    monkeypatch.setenv("LANGCHAIN_TRACING", "false")
     monkeypatch.setenv("LANGCHAIN_PROJECT", "test-project")

docker-compose.yml

@@ -10,7 +10,7 @@ services:
       - OPENROUTER_API_KEY=${OPENROUTER_API_KEY}
       - TAVILY_API_KEY=${TAVILY_API_KEY}
       - LANGSMITH_API_KEY=${LANGSMITH_API_KEY:-}
-      - LANGCHAIN_TRACING_V2=${LANGCHAIN_TRACING_V2:-false}
+      - LANGCHAIN_TRACING=${LANGCHAIN_TRACING:-false}
       - LANGCHAIN_PROJECT=${LANGCHAIN_PROJECT:-agentic-market-research}
       - DEFAULT_MODEL=${DEFAULT_MODEL:-x-ai/grok-4.1-fast:free}
       - MAX_COST_PER_RUN=${MAX_COST_PER_RUN:2.0}

docs/WORKFLOW.md

@@ -114,7 +114,7 @@ Environment variables (`.env`):
 ```bash
 DEFAULT_MODEL=x-ai/grok-4.1-fast:free
 MAX_COST_PER_RUN=2.0
-LANGCHAIN_TRACING_V2=true
+LANGCHAIN_TRACING=true
 ```
 
 ## Observability
@@ -125,7 +125,7 @@ LangSmith integration provides:
 - Cost tracking per call
 - Performance bottleneck identification
 
-Enable: Set `LANGCHAIN_TRACING_V2=true` in `.env`
+Enable: Set `LANGCHAIN_TRACING=true` in `.env`
 
 Dashboard: https://smith.langchain.com
 

src/utils/config.py

@@ -24,7 +24,7 @@ class Settings(BaseSettings):
     langsmith_api_key: str | None = Field(
         None, description="LangSmith API key for tracing"
     )
-    langchain_tracing_v2: bool = Field(True, description="Enable LangChain tracing")
+    langchain_tracing: bool = Field(True, description="Enable LangChain tracing")
     langchain_project: str = Field(
         "market-intelligence-prod", description="LangSmith project name"
     )