feat: run twice daily (every 12 hours) - morning and evening posts

app.py

@@ -155,8 +155,8 @@ if __name__ == "__main__":
         else:
             # quick DNS resolution check to avoid noisy stack traces when DNS fails
             # Retry DNS resolution a few times with exponential backoff to handle transient name-resolution blips
-            dns_attempts = int(os.getenv("FB_DNS_RETRY_ATTEMPTS", "3"))
-            dns_backoff_base = int(os.getenv("FB_DNS_BACKOFF_BASE", "1"))
+            dns_attempts = int(os.getenv("FB_DNS_RETRY_ATTEMPTS", "5"))
+            dns_backoff_base = int(os.getenv("FB_DNS_BACKOFF_BASE", "2"))
             dns_ok = False
             last_dns_exc = None
             for attempt in range(1, dns_attempts + 1):
@@ -292,9 +292,14 @@ if __name__ == "__main__":
     if run_daily:
         logger.info("RUN_DAILY_REPLICATE enabled — validating tokens before starting background job")
         force_run = os.getenv("FORCE_RUN_DAILY", "false").lower() in ("1", "true", "yes")
-        if validate_tokens() or force_run:
+        skip_initial_validation = os.getenv("SKIP_INITIAL_VALIDATION", "false").lower() in ("1", "true", "yes")
+        if validate_tokens() or force_run or skip_initial_validation:
             def _bg():
-                interval_hours = int(os.getenv("DAILY_INTERVAL_HOURS", "24"))
+                interval_hours = int(os.getenv("DAILY_INTERVAL_HOURS", "12"))
+                startup_delay = int(os.getenv("SCHEDULER_STARTUP_DELAY", "30"))
+                if startup_delay > 0:
+                    logger.info("Delaying first scheduled run by %s seconds to allow Space networking to stabilize", startup_delay)
+                    time.sleep(startup_delay)
                 while True:
                     try:
                         logger.info("Starting scheduled daily generate_and_post run")