Initial commit: server-monitor v1 (Python)

Kompletter Neustart als Python-Projekt.
Portiert von zfs-monitor Bash v3, saubere Architektur:
- config.py: TOML-Config mit dataclasses
- state.py: zentrales State-Management (JSON statt Einzeldateien)
- notify.py: Telegram + Persistent Alerting als wiederverwendbare Klasse
- checks/zfs.py: ZFS Pool-Health, I/O-Fehler, Kapazität
- checks/smart.py: SATA + NVMe SMART-Monitoring
- checks/nut.py: NUT/USV-Monitoring (APC Back-UPS RS 1500G)

monitor.py

@@ -0,0 +1,65 @@
+#!/usr/bin/env python3
+"""server-monitor – Erweitertes Server-Monitoring mit Telegram-Alerts."""
+
+from __future__ import annotations
+
+import logging
+import sys
+from pathlib import Path
+
+from config import load_config
+from notify import Alerter
+from state import State
+from checks.zfs import ZFSCheck
+from checks.smart import SmartCheck
+from checks.nut import NutCheck
+
+CONFIG_FILE = "/etc/server-monitor.toml"
+
+
+def setup_logging(log_file: str) -> None:
+    Path(log_file).parent.mkdir(parents=True, exist_ok=True)
+    logging.basicConfig(
+        level=logging.INFO,
+        format="[%(asctime)s] %(message)s",
+        datefmt="%Y-%m-%d %H:%M:%S",
+        handlers=[
+            logging.FileHandler(log_file),
+            logging.StreamHandler(sys.stdout),
+        ],
+    )
+
+
+def main() -> None:
+    try:
+        config = load_config(CONFIG_FILE)
+    except (FileNotFoundError, ValueError) as e:
+        print(f"FEHLER: {e}", file=sys.stderr)
+        sys.exit(1)
+
+    setup_logging(config.log_file)
+    log = logging.getLogger("main")
+
+    state   = State(config.state_file)
+    alerter = Alerter(config, state)
+
+    log.info("====== server-monitor Start ======")
+
+    checks = [
+        ZFSCheck(config, state, alerter),
+        SmartCheck(config, state, alerter),
+    ]
+    if config.nut.enabled:
+        checks.append(NutCheck(config, state, alerter))
+
+    for check in checks:
+        try:
+            check.run()
+        except Exception as e:
+            log.error("Check %s fehlgeschlagen: %s", check.__class__.__name__, e)
+
+    log.info("====== server-monitor Ende ======")
+
+
+if __name__ == "__main__":
+    main()