Feature: Disk-ID Namen + SMART-Daten on demand im VdevTree

- Backend: get_disk_id_map() liest /dev/disk/by-id/ dynamisch aus (ata/nvme/scsi/wwn)
- Backend: _annotate_disk_ids() hängt disk_id an Leaf-Vdevs in get_pool_status()
- Backend: get_smart_info() liest smartctl --json (Modell, Temp, Health, Stunden, Sektoren)
- Backend: GET /api/pools/disks/{disk}/smart Endpoint
- Frontend: DiskRow zeigt Modellname neben sda/sdb, aufklappbar für SMART-Details
- Frontend: Temp-Spalte farbcodiert (grün/gelb/rot), SMART-Spalte zeigt PASSED/FAILED

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

backend/services/zfs_runner.py

@@ -6,6 +6,8 @@ Handles subprocess execution, parsing, caching, error handling
 import subprocess
 import json
 import logging
+import glob
+import os
 from typing import Dict, List, Any, Optional, Tuple
 from dataclasses import dataclass
 from datetime import datetime, timedelta
@@ -196,6 +198,70 @@ class ZFSRunner:
 
         return roots
 
+    def get_disk_id_map(self) -> Dict[str, str]:
+        """
+        Build mapping {sda: ata-WDC_WD20EZRZ-..., nvme0n1: nvme-Samsung_...} from /dev/disk/by-id/.
+        Prefers ata- prefix, then nvme-, then scsi-, then wwn-.
+        """
+        mapping: Dict[str, str] = {}
+        priority = ["ata-", "nvme-", "scsi-", "wwn-"]
+
+        for pattern in priority:
+            for link in glob.glob(f"/dev/disk/by-id/{pattern}*"):
+                if "-part" in os.path.basename(link):
+                    continue
+                try:
+                    target = os.path.realpath(link)
+                    disk = os.path.basename(target)
+                    if disk not in mapping:
+                        mapping[disk] = os.path.basename(link)
+                except OSError:
+                    continue
+
+        return mapping
+
+    def get_smart_info(self, disk: str) -> Dict[str, Any]:
+        """
+        Run smartctl -A -i --json on /dev/disk and return parsed health data.
+        Returns empty dict if smartctl unavailable or disk not SMART-capable.
+        """
+        stdout, stderr, rc = self.run_command(["smartctl", "-A", "-i", "--json", f"/dev/{disk}"])
+        if not stdout:
+            return {}
+        try:
+            data = json.loads(stdout)
+        except json.JSONDecodeError:
+            return {}
+
+        result: Dict[str, Any] = {}
+
+        # Device info
+        device = data.get("device", {})
+        model_info = data.get("model_name") or data.get("model_family", "")
+        serial = data.get("serial_number", "")
+        result["model"] = model_info
+        result["serial"] = serial
+        result["protocol"] = device.get("protocol", "")
+
+        # Power-on hours
+        result["power_on_hours"] = data.get("power_on_time", {}).get("hours")
+
+        # Temperature
+        temp = data.get("temperature", {})
+        result["temperature"] = temp.get("current")
+
+        # Overall health (from -H flag data embedded in -i)
+        smart_status = data.get("smart_status", {})
+        result["passed"] = smart_status.get("passed")
+
+        # Key attributes from ata_smart_attributes
+        attrs = {a["name"]: a for a in data.get("ata_smart_attributes", {}).get("table", [])}
+        result["reallocated_sectors"] = attrs.get("Reallocated_Sector_Ct", {}).get("raw", {}).get("value", 0)
+        result["pending_sectors"] = attrs.get("Current_Pending_Sector", {}).get("raw", {}).get("value", 0)
+        result["uncorrectable"] = attrs.get("Offline_Uncorrectable", {}).get("raw", {}).get("value", 0)
+
+        return result
+
     def get_pool_status(self, pool_name: str) -> Dict[str, Any]:
         """
         Get detailed pool status including VDEV tree and error counters
@@ -235,17 +301,30 @@ class ZFSRunner:
                     config_lines.append(line)
 
         if config_lines:
-            # Remove the pool name itself (first non-empty line after "NAME" header)
-            # and parse only child vdevs
             parsed = self._parse_vdev_tree(config_lines)
-            # parsed[0] is the pool root node; its children are the top-level vdevs
             if parsed and parsed[0]["name"] == pool_name:
                 status["vdevs"] = parsed[0]["children"]
             else:
                 status["vdevs"] = parsed
 
+        # Annotate leaf vdevs with disk_id from /dev/disk/by-id/
+        disk_id_map = self.get_disk_id_map()
+        self._annotate_disk_ids(status["vdevs"], disk_id_map)
+
         return status
 
+    def _annotate_disk_ids(self, vdevs: List[Dict], disk_id_map: Dict[str, str]) -> None:
+        """Recursively annotate leaf vdev nodes with disk_id from by-id map."""
+        for vdev in vdevs:
+            children = vdev.get("children", [])
+            if not children:
+                name = vdev.get("name", "")
+                # Strip partition suffix (sda1 → sda)
+                base = re.sub(r'\d+$', '', name) if name[-1:].isdigit() else name
+                vdev["disk_id"] = disk_id_map.get(name) or disk_id_map.get(base)
+            else:
+                self._annotate_disk_ids(children, disk_id_map)
+
     def scrub_pool(self, pool_name: str) -> Dict[str, str]:
         """
         Start or resume scrub on pool