Claude Code: add auto-restart loop to entrypoint.sh and explicit startup prints

- entrypoint.sh: wrap uvicorn in while loop for auto-restart on crashes
- entrypoint.sh: add timestamped logging for each restart attempt
- app.py: add explicit print() statements for pre-startup visibility

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

app.py

@@ -10,6 +10,15 @@ import logging
 from fastapi import FastAPI, status as http_status
 from fastapi.responses import JSONResponse
 
+# EXPLICIT PRE-STARTUP PRINTS (visible in container logs)
+print(">>> " + "="*50)
+print(">>> CAIN: Python app.py loading...")
+print(">>> " + "="*50)
+print(">>> CAIN: Python version:", sys.version.split()[0])
+print(">>> CAIN: Working directory:", os.getcwd())
+print(">>> CAIN: PORT =", os.environ.get('PORT', '7860'))
+print(">>> " + "="*50)
+
 # Configure logging to stdout for container visibility
 logging.basicConfig(
     level=logging.INFO,

entrypoint.sh

@@ -1,8 +1,6 @@
 #!/bin/bash
 # Entrypoint for HuggingClaw - Cain
-# Provides explicit logging for startup sequence debugging
-
-set -e
+# Provides explicit logging and auto-restart on crashes
 
 echo "=========================================="
 echo "Cain Starting..."
@@ -34,8 +32,22 @@ ls -la /app/*.py 2>/dev/null || echo "  (no .py files in /app root)"
 
 echo ""
 echo "=========================================="
-echo "Starting uvicorn..."
+echo "Starting uvicorn with auto-restart on crash..."
 echo "=========================================="
 
-# Start uvicorn with explicit host/port
-exec uvicorn app:app --host 0.0.0.0 --port "${PORT:-7860}"
+# Auto-restart loop: if uvicorn crashes, wait 2s and restart
+while true; do
+    echo "[$(date -u +"%Y-%m-%dT%H:%M:%SZ")] Starting uvicorn on 0.0.0.0:${PORT:-7860}..."
+    uvicorn app:app --host 0.0.0.0 --port "${PORT:-7860}"
+    EXIT_CODE=$?
+
+    echo "[$(date -u +"%Y-%m-%dT%H:%M:%SZ")] uvicorn exited with code: $EXIT_CODE"
+
+    if [ $EXIT_CODE -eq 0 ]; then
+        echo "[$(date -u +"%Y-%m-%dT%H:%M:%SZ")] Clean exit, not restarting"
+        break
+    fi
+
+    echo "[$(date -u +"%Y-%m-%dT%H:%M:%SZ")] Crash detected! Restarting in 2 seconds..."
+    sleep 2
+done