[30388f42] Infrastructure Hardening & Final Touches: Stabilized Lead Engine (Nginx routing, manager.py, Dockerfile fixes), restored known-good Nginx configs, and ensured all recent fixes are committed. System is ready for migration.

- Fixed Nginx proxy for /feedback/ and /lead/ routes.
- Restored manager.py to use persistent SQLite DB and corrected test lead triggers.
- Refined Dockerfile for lead-engine to ensure clean dependency installs.
- Applied latest API configs (.env) to lead-engine and duckdns services.
- Updated documentation (GEMINI.md, readme.md, RELOCATION.md, lead-engine/README.md) to reflect final state and lessons learned.
- Committed all pending changes to main branch.

lead-engine/trading_twins/debug_calendar.py

@@ -0,0 +1,91 @@
+# lead-engine/trading_twins/debug_calendar.py
+import os
+import requests
+import json
+from datetime import datetime, timedelta
+from zoneinfo import ZoneInfo
+from threading import Thread, Lock
+import uvicorn
+from fastapi import FastAPI, Response, BackgroundTasks
+import msal
+
+# --- Zeitzonen-Konfiguration ---
+TZ_BERLIN = ZoneInfo("Europe/Berlin")
+
+# --- Konfiguration ---
+# Credentials für die Kalender-Lese-App (e.melcer)
+CAL_APPID = os.getenv("CAL_APPID")
+CAL_SECRET = os.getenv("CAL_SECRET")
+CAL_TENNANT_ID = os.getenv("CAL_TENNANT_ID")
+TARGET_EMAIL = "e.melcer@robo-planet.de"
+
+GRAPH_API_ENDPOINT = "https://graph.microsoft.com/v1.0"
+
+def get_access_token(client_id, client_secret, tenant_id):
+    if not all([client_id, client_secret, tenant_id]):
+        print("❌ Credentials missing in .env for Calendar Access")
+        return None
+    authority = f"https://login.microsoftonline.com/{tenant_id}"
+    app = msal.ConfidentialClientApplication(client_id=client_id, authority=authority, client_credential=client_secret)
+    # Scopes for Calendar.Read
+    scopes = ["https://graph.microsoft.com/.default"]
+    result = app.acquire_token_silent(scopes, account=None)
+    if not result:
+        result = app.acquire_token_for_client(scopes=scopes)
+    if "access_token" in result:
+        print("✅ Successfully acquired Access Token for Calendar.")
+        return result["access_token"]
+    else:
+        print(f"❌ Failed to acquire Access Token: {result.get('error_description')}")
+        return None
+
+def check_calendar_availability():
+    print(f"--- Checking Calendar for {TARGET_EMAIL} ---")
+    token = get_access_token(CAL_APPID, CAL_SECRET, CAL_TENNANT_ID)
+    if not token:
+        print("❌ Cannot proceed without Access Token.")
+        return None
+
+    headers = {"Authorization": f"Bearer {token}", "Content-Type": "application/json", "Prefer": 'outlook.timezone="Europe/Berlin"'}
+    
+    # Get next 5 events starting from now
+    start_time = datetime.now(TZ_BERLIN).replace(minute=0, second=0, microsecond=0)
+    if start_time.hour >= 17: start_time += timedelta(days=1); start_time = start_time.replace(hour=8)
+    end_time = start_time + timedelta(days=3)
+
+    payload = {
+        "schedules": [TARGET_EMAIL],
+        "startTime": {"dateTime": start_time.isoformat(), "timeZone": "Europe/Berlin"},
+        "endTime": {"dateTime": end_time.isoformat(), "timeZone": "Europe/Berlin"},
+        "availabilityViewInterval": 60 # Check availability in 1-hour blocks
+    }
+    
+    url = f"{GRAPH_API_ENDPOINT}/users/{TARGET_EMAIL}/calendarView?startDateTime={start_time.isoformat()}&endDateTime={end_time.isoformat()}&$top=5"
+    
+    try:
+        response = requests.get(url, headers=headers)
+        if response.status_code == 200:
+            events = response.json().get("value", [])
+            if not events:
+                print("✅ API call successful, but no upcoming events found.")
+                return []
+
+            print("\n--- Next 5 Upcoming Events ---")
+            for event in events:
+                subject = event.get('subject', 'No Subject')
+                start = event.get('start', {}).get('dateTime')
+                if start:
+                    dt_obj = datetime.fromisoformat(start.replace('Z', '+00:00')).astimezone(TZ_BERLIN)
+                    start_formatted = dt_obj.strftime('%A, %d.%m.%Y um %H:%M Uhr')
+                else: start_formatted = "N/A"
+                print(f"🗓️  {subject} -> {start_formatted}")
+            return events
+        else:
+            print(f"❌ HTTP Error: {response.status_code} - {response.text}")
+            return None
+    except Exception as e:
+        print(f"❌ An unexpected error occurred: {e}")
+        return None
+
+if __name__ == "__main__":
+    check_calendar_availability()