Add execution logging to logs/ directory

Each run saves a timestamped log file (logs/YYYYMMDD_HHMMSS.log)
with full output. logs/ is gitignored.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

.gitignore

@@ -1,3 +1,4 @@
 .env
 __pycache__/
 *.pyc
+logs/

run.py

@@ -1,5 +1,6 @@
 import sys
 import io
+import os
 sys.stdout = io.TextIOWrapper(sys.stdout.buffer, encoding="utf-8", line_buffering=True)
 
 from airtable_client import AirtableClient
@@ -11,6 +12,26 @@ import config
 from datetime import datetime
 
 
+class Tee:
+    """Escribe simultáneamente en consola y en archivo de log."""
+    def __init__(self, filepath):
+        os.makedirs(os.path.dirname(filepath), exist_ok=True)
+        self._file = open(filepath, "w", encoding="utf-8")
+        self._stdout = sys.stdout
+
+    def write(self, data):
+        self._stdout.write(data)
+        self._file.write(data)
+
+    def flush(self):
+        self._stdout.flush()
+        if not self._file.closed:
+            self._file.flush()
+
+    def close(self):
+        self._file.close()
+
+
 ICONOS = {
     "PAUSAR": "⛔",
     "SPRINT": "🚀",
@@ -115,4 +136,12 @@ def run():
 
 
 if __name__ == "__main__":
+    timestamp = datetime.now().strftime("%Y%m%d_%H%M%S")
+    log_path = os.path.join("logs", f"{timestamp}.log")
+    tee = Tee(log_path)
+    sys.stdout = tee
+    try:
         run()
+    finally:
+        tee.close()
+        print(f"\nLog guardado en: {log_path}", file=tee._stdout)