feat: skip posts older than 24h on first run

- Add MAX_POST_AGE_HOURS config (default 24)
- Filter posts by taken_at timestamp
- Stop fetching when hitting old posts (Instagram returns newest first)
- .env: MAX_POST_AGE_HOURS=24

config.py

@@ -12,6 +12,7 @@ class Config:
     download_dir: str = os.getenv("DOWNLOAD_DIR", "/data/downloads")
     session_file: str = os.getenv("SESSION_FILE", "/data/session")
     max_media_size_mb: int = int(os.getenv("MAX_MEDIA_SIZE_MB", "50"))
+    max_post_age_hours: int = int(os.getenv("MAX_POST_AGE_HOURS", "24"))
 
     def validate(self) -> list[str]:
         errors = []

instagram_monitor.py

@@ -1,7 +1,7 @@
 import json
 import random
 import time
-from datetime import datetime
+from datetime import datetime, timedelta, timezone
 from pathlib import Path
 from typing import AsyncIterator
 
@@ -191,11 +191,23 @@ class InstagramMonitor:
             data = resp.json()
             items = data.get("items", [])
             posts = []
+            cutoff = datetime.now(timezone.utc) - timedelta(hours=config.max_post_age_hours)
+
             for item in items:
                 media_id = str(item.get("pk", item.get("id", "")))
                 if media_id in self._state:
                     break
+
+                # Filter by date
+                taken_at = item.get("taken_at", 0)
+                if taken_at:
+                    post_time = datetime.fromtimestamp(taken_at, tz=timezone.utc)
+                    if post_time < cutoff:
+                        logger.debug(f"Skipping old post {media_id} from {post_time.isoformat()}")
+                        break
+
                 posts.append(item)
+
             return list(reversed(posts))
         except Exception as e:
             logger.error(f"Error fetching posts for {user_pk}: {e}")