Run Reddit and X searches in parallel, fix timeout handling

- Refactor run_research() to use ThreadPoolExecutor for parallel execution
- Reddit timeout/crash no longer blocks X search from running
- Add catch for ConnectionResetError/OSError in http.py
- Per-item error handling in Reddit enrichment (one failure doesn't crash all)
- Increase API timeouts from 60/90/120 to 90/120/180 seconds
- Add ClawdBot setup example to README

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

scripts/lib/openai_reddit.py

@@ -110,8 +110,8 @@ def search_reddit(
         "Content-Type": "application/json",
     }
 
-    # Adjust timeout based on depth
-    timeout = 60 if depth == "quick" else 90 if depth == "default" else 120
+    # Adjust timeout based on depth (generous for OpenAI web_search which can be slow)
+    timeout = 90 if depth == "quick" else 120 if depth == "default" else 180
 
     # Note: allowed_domains accepts base domain, not subdomains
     # We rely on prompt to filter out developers.reddit.com, etc.