feat: enhance curation engine with robust retries, detailed logging, and branch-specific workflows

src/state_manager.py

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+import os
+import json
+from datetime import datetime
+from src.config import MADRID_TZ
+from src.logger import log_event
+
+STATE_FILE = "src/memory/state.json"
+
+def load_state() -> dict:
+    default_state = {
+        "last_processed_tweet_date": "2024-10-01T00:00:00"
+    }
+    if os.path.exists(STATE_FILE):
+        try:
+            with open(STATE_FILE, 'r') as f:
+                return json.load(f)
+        except Exception as e:
+            log_event(f"[!] Error cargando state.json: {e}")
+    return default_state
+
+def save_state(last_date: datetime):
+    state = load_state()
+    state["last_processed_tweet_date"] = last_date.isoformat()
+    
+    os.makedirs(os.path.dirname(STATE_FILE), exist_ok=True)
+    try:
+        with open(STATE_FILE, 'w') as f:
+            json.dump(state, f, indent=2)
+        log_event(f"[*] Estado guardado: última fecha procesada {last_date.date()}")
+    except Exception as e:
+        log_event(f"[!] Error guardando state.json: {e}")
+
+def get_last_date() -> datetime:
+    state = load_state()
+    date_str = state.get("last_processed_tweet_date")
+    return datetime.fromisoformat(date_str).replace(tzinfo=MADRID_TZ)