fix(logging): configure stdlib logging and structlog integration

- Add stdlib logging.basicConfig before structlog setup
- Switch structlog to stdlib-backed logger factory
- Fix import ordering in state_manager

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

app/services/state_manager.py

@@ -1,7 +1,7 @@
 """Session state orchestration for TrialPath Streamlit app."""
 
-import structlog
 import streamlit as st
+import structlog
 
 logger = structlog.get_logger("trialpath.journey")
 

streamlit_app.py

@@ -3,23 +3,35 @@
 Entrypoint: multipage Streamlit app with st.navigation.
 """
 
+import logging  # noqa: E402
+import sys  # noqa: E402
+
 from dotenv import load_dotenv
 
 load_dotenv()
 
+# Configure stdlib logging FIRST so all loggers (pipeline, services) are captured
+logging.basicConfig(
+    level=logging.INFO,
+    format="%(asctime)s %(levelname)s %(name)s: %(message)s",
+    stream=sys.stderr,
+    force=True,
+)
+
 import structlog  # noqa: E402
 
 structlog.configure(
     processors=[
+        structlog.stdlib.add_log_level,
+        structlog.stdlib.add_logger_name,
         structlog.processors.TimeStamper(fmt="iso"),
-        structlog.processors.add_log_level,
         structlog.processors.StackInfoRenderer(),
         structlog.processors.format_exc_info,
         structlog.processors.JSONRenderer(),
     ],
-    wrapper_class=structlog.BoundLogger,
+    wrapper_class=structlog.stdlib.BoundLogger,
     context_class=dict,
-    logger_factory=structlog.PrintLoggerFactory(),
+    logger_factory=structlog.stdlib.LoggerFactory(),
     cache_logger_on_first_use=True,
 )