fix: retry FB token validation and add FORCE_RUN_DAILY override

app.py

@@ -97,12 +97,25 @@ if __name__ == "__main__":
             logger.error("Facebook token or page id missing")
             ok = False
         else:
-            try:
-                r = requests.get(f"https://graph.facebook.com/me?access_token={fb_token}", timeout=10)
-                if r.status_code != 200:
-                    logger.warning("Facebook token validation returned %s: %s", r.status_code, r.text)
-                    ok = False
-            except Exception:
+            # Retry DNS / network transient errors a few times before failing
+            import time as _time
+            _tries = 3
+            _ok = False
+            for _i in range(_tries):
+                try:
+                    r = requests.get(f"https://graph.facebook.com/me?access_token={fb_token}", timeout=10)
+                    if r.status_code == 200:
+                        _ok = True
+                        break
+                    else:
+                        logger.warning("Facebook token validation returned %s: %s", r.status_code, r.text)
+                        # non-200 likely token issue — no retry
+                        break
+                except Exception:
+                    logger.warning("Facebook token validation attempt %s failed, retrying...", _i + 1)
+                    _time.sleep(2)
+                    continue
+            if not _ok:
                 logger.exception("Facebook token validation failed")
                 ok = False
 
@@ -128,7 +141,8 @@ if __name__ == "__main__":
     run_daily = os.getenv("RUN_DAILY_REPLICATE", "true").lower() in ("1", "true", "yes")
     if run_daily:
         logger.info("RUN_DAILY_REPLICATE enabled — validating tokens before starting background job")
-        if validate_tokens():
+        force_run = os.getenv("FORCE_RUN_DAILY", "false").lower() in ("1", "true", "yes")
+        if validate_tokens() or force_run:
             def _bg():
                 interval_hours = int(os.getenv("DAILY_INTERVAL_HOURS", "24"))
                 while True:
@@ -158,7 +172,7 @@ Ultra-realistic photography style, fine-art cinematic composition, calming mood,
             t.start()
             logger.info("Started background daily generate_and_post thread")
         else:
-            logger.error("Token validation failed — daily job will not start")
+            logger.error("Token validation failed — daily job will not start (set FORCE_RUN_DAILY=true to override)")
 
     # Optionally run one immediate generation on startup (headless/autostart)
     run_on_start = os.getenv("RUN_ON_START", "false").lower() in ("1", "true", "yes")