Refine health checks and add polling animation

app/backend/operations/health/schemas.py

@@ -0,0 +1,23 @@
+"""Pydantic schemas for health responses."""
+
+from datetime import datetime
+
+from pydantic import BaseModel
+
+class ComponentCheck(BaseModel):
+    name: str
+    # pass | warn | fail
+    status: str
+    time: datetime | None = None
+    output: str | None = None
+    observedValue: float | int | None = None
+    observedUnit: str | None = None
+
+class HealthStatus(BaseModel):
+    # pass | warn | fail
+    status: str
+    version: str | None = None
+    environment: str | None = None
+    serviceName: str | None = None
+    description: str | None = None
+    checks: dict[str, ComponentCheck]