Add enclosure health details (PSUs, fans, temps, voltages) via SES

Parse sg_ses --page=0x02 output to surface enclosure-level health data
including power supply status, fan RPMs, temperature sensors, and voltage
rails. Failed/critical components are reflected in the overview totals
and shown as status pills in the enclosure card header with an expandable
detail panel.

models/schemas.py

@@ -65,6 +65,41 @@ class SlotWithDrive(BaseModel):
     drive: DriveHealthSummary | None = None
 
 
+class PsuStatus(BaseModel):
+    index: int
+    status: str
+    fail: bool = False
+    ac_fail: bool = False
+    dc_fail: bool = False
+
+
+class FanStatus(BaseModel):
+    index: int
+    status: str
+    rpm: int | None = None
+    fail: bool = False
+
+
+class TempSensor(BaseModel):
+    index: int
+    status: str
+    temperature_c: float | None = None
+
+
+class VoltageSensor(BaseModel):
+    index: int
+    status: str
+    voltage: float | None = None
+
+
+class EnclosureHealth(BaseModel):
+    overall_status: str = "OK"
+    psus: list[PsuStatus] = []
+    fans: list[FanStatus] = []
+    temps: list[TempSensor] = []
+    voltages: list[VoltageSensor] = []
+
+
 class EnclosureWithDrives(BaseModel):
     id: str
     sg_device: str | None = None
@@ -74,6 +109,7 @@ class EnclosureWithDrives(BaseModel):
     total_slots: int
     populated_slots: int
     slots: list[SlotWithDrive]
+    health: EnclosureHealth | None = None
 
 
 class HostDrive(BaseModel):