Show git commit hash as version in Slack header

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

slack_reporter.py

@@ -1,9 +1,21 @@
 import json
+import subprocess
 import requests
 import config
 from datetime import datetime, timedelta, date
 
 
+def _git_version() -> str:
+    try:
+        return subprocess.check_output(
+            ["git", "rev-parse", "--short", "HEAD"],
+            stderr=subprocess.DEVNULL,
+            text=True,
+        ).strip()
+    except Exception:
+        return "unknown"
+
+
 ALERT_LOSS_EUR = 200    # pérdida absoluta > 200€ → alerta
 ALERT_MARGIN_PCT = -50  # margen % < -50% → alerta
 TOP_N = 5               # campañas a mostrar en rankings
@@ -214,11 +226,12 @@ def build_and_send(collected: list, dry_run: bool, prev_month_metricas: dict = N
 
     # ── Construir bloques ─────────────────────────────────────────────────────
     mode = "🔵 DRY RUN" if dry_run else "⚡ PRODUCCIÓN"
+    version = _git_version()
 
     blocks = [
         {
             "type": "header",
-            "text": {"type": "plain_text", "text": f"LEADS OPTIMIZER — {now.strftime('%d/%m/%Y %H:%M')}  {mode}"},
+            "text": {"type": "plain_text", "text": f"LEADS OPTIMIZER v{version} — {now.strftime('%d/%m/%Y %H:%M')}  {mode}"},
         },
         {
             "type": "section",