fix: wire SGP_CLIENT_BASE_URL and silence openai-agents tracer in templates

Two tracing pitfalls hit when running the openai-agents templates against a
non-default SGP environment with a LiteLLM proxy key:

1. SGPTracingProcessorConfig hardcoded sgp_base_url=None so traces always went
   to the SDK default (api.egp.scale.com) regardless of SGP_CLIENT_BASE_URL.
   Wired the env var through for sync-openai-agents and temporal-openai-agents.
   sync-langgraph and default-langgraph already had this; no change there.

2. The openai-agents SDK's native tracer ships traces to api.openai.com using
   OPENAI_API_KEY. When OPENAI_API_KEY is a LiteLLM proxy key the SDK errors
   with 401 on every request. Calling set_tracing_disabled(True) at module
   load silences that exporter; SGP traces still flow through the Agentex
   tracing manager.

Also added SGP_CLIENT_BASE_URL to every .env.example.j2 so users see the knob
when they copy .env.example to .env.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: danielmillerp

src/agentex/lib/cli/templates/default-langgraph/.env.example.j2

@@ -10,3 +10,4 @@ LITELLM_API_KEY=
 # SGP Configuration (optional - for tracing)
 # SGP_API_KEY=
 # SGP_ACCOUNT_ID=
+# SGP_CLIENT_BASE_URL=

src/agentex/lib/cli/templates/default/.env.example.j2

@@ -10,3 +10,4 @@ LITELLM_API_KEY=
 # SGP Configuration (optional - for tracing)
 # SGP_API_KEY=
 # SGP_ACCOUNT_ID=
+# SGP_CLIENT_BASE_URL=

src/agentex/lib/cli/templates/sync-langgraph/.env.example.j2

@@ -10,3 +10,4 @@ LITELLM_API_KEY=
 # SGP Configuration (optional - for tracing)
 # SGP_API_KEY=
 # SGP_ACCOUNT_ID=
+# SGP_CLIENT_BASE_URL=

src/agentex/lib/cli/templates/sync-openai-agents/.env.example.j2

@@ -10,3 +10,4 @@ LITELLM_API_KEY=
 # SGP Configuration (optional - for tracing)
 # SGP_API_KEY=
 # SGP_ACCOUNT_ID=
+# SGP_CLIENT_BASE_URL=

src/agentex/lib/cli/templates/sync-openai-agents/project/acp.py.j2

@@ -13,7 +13,12 @@ from agentex.types.task_message_update import TaskMessageUpdate, StreamTaskMessa
 from agentex.types.task_message_content import TaskMessageContent
 from agentex.types.text_content import TextContent
 from agentex.lib.utils.logging import make_logger
-from agents import Agent, Runner, RunConfig, function_tool
+from agents import Agent, Runner, RunConfig, function_tool, set_tracing_disabled
+
+# Disable the openai-agents SDK's native tracer so it doesn't ship traces to
+# api.openai.com using OPENAI_API_KEY (which may be a LiteLLM proxy key).
+# SGP tracing below still runs via the Agentex tracing manager.
+set_tracing_disabled(True)
 
 
 logger = make_logger(__name__)
@@ -25,12 +30,14 @@ if _litellm_key:
 
 SGP_API_KEY = os.environ.get("SGP_API_KEY", "")
 SGP_ACCOUNT_ID = os.environ.get("SGP_ACCOUNT_ID", "")
+SGP_CLIENT_BASE_URL = os.environ.get("SGP_CLIENT_BASE_URL", "")
 
 if SGP_API_KEY and SGP_ACCOUNT_ID:
     add_tracing_processor_config(
         SGPTracingProcessorConfig(
             sgp_api_key=SGP_API_KEY,
             sgp_account_id=SGP_ACCOUNT_ID,
+            sgp_base_url=SGP_CLIENT_BASE_URL,
         )
     )
 

src/agentex/lib/cli/templates/sync/.env.example.j2

@@ -10,3 +10,4 @@ LITELLM_API_KEY=
 # SGP Configuration (optional - for tracing)
 # SGP_API_KEY=
 # SGP_ACCOUNT_ID=
+# SGP_CLIENT_BASE_URL=

src/agentex/lib/cli/templates/temporal-openai-agents/.env.example.j2

@@ -10,3 +10,4 @@ LITELLM_API_KEY=
 # SGP Configuration (optional - for tracing)
 # SGP_API_KEY=
 # SGP_ACCOUNT_ID=
+# SGP_CLIENT_BASE_URL=

src/agentex/lib/cli/templates/temporal-openai-agents/project/workflow.py.j2

@@ -10,7 +10,13 @@ from agentex.lib.core.temporal.types.workflow import SignalName
 from agentex.lib.utils.logging import make_logger
 from agentex.types.text_content import TextContent
 from agentex.lib.environment_variables import EnvironmentVariables
-from agents import Agent, Runner
+from agents import Agent, Runner, set_tracing_disabled
+
+# Disable the openai-agents SDK's native tracer so it doesn't ship traces to
+# api.openai.com using OPENAI_API_KEY (which may be a LiteLLM proxy key).
+# SGP tracing below still runs via the Agentex tracing manager.
+set_tracing_disabled(True)
+
 from agentex.lib.core.temporal.plugins.openai_agents.hooks.hooks import TemporalStreamingHooks
 from pydantic import BaseModel
 from typing import List, Dict, Any
@@ -39,6 +45,7 @@ add_tracing_processor_config(
     SGPTracingProcessorConfig(
         sgp_api_key=os.environ.get("SGP_API_KEY", ""),
         sgp_account_id=os.environ.get("SGP_ACCOUNT_ID", ""),
+        sgp_base_url=os.environ.get("SGP_CLIENT_BASE_URL", ""),
     )
 )
 

src/agentex/lib/cli/templates/temporal/.env.example.j2

@@ -10,3 +10,4 @@ LITELLM_API_KEY=
 # SGP Configuration (optional - for tracing)
 # SGP_API_KEY=
 # SGP_ACCOUNT_ID=
+# SGP_CLIENT_BASE_URL=