feat: host inventory (agent.inventory), host detail page, UI columns

Store hardware/software snapshots on hosts; warn on hardware changes. Host card from Hosts list. Add agent version column to Events/Overview; rename Hosts table columns and sort by status.

Co-authored-by: Cursor <cursoragent@cursor.com>

backend/app/services/ingest.py

@@ -7,6 +7,7 @@ from sqlalchemy.orm import Session
 from app.models import Event, Host
 from app.services.daily_report_format import normalize_daily_report_details
 from app.services.event_severity_overrides import apply_severity_override
+from app.services.host_inventory import INVENTORY_EVENT_TYPE, process_inventory_ingest
 
 DAILY_REPORT_TYPES = frozenset({"report.daily.ssh", "report.daily.rdp"})
 
@@ -80,15 +81,33 @@ def ingest_event(db: Session, payload: dict) -> tuple[Event, bool]:
     details = payload.get("details")
     if payload.get("type") in DAILY_REPORT_TYPES:
         details = normalize_daily_report_details(details, host, payload["type"])
+
+    severity = payload["severity"]
+    title = payload["title"]
+    summary = payload["summary"]
+    if payload.get("type") == INVENTORY_EVENT_TYPE:
+        inv_severity, hw_changes, inv_patch = process_inventory_ingest(host, details)
+        severity = inv_severity
+        if inv_patch:
+            merged = dict(details) if isinstance(details, dict) else {}
+            merged.update(inv_patch)
+            details = merged
+        if hw_changes:
+            change_fields = ", ".join(c["field"] for c in hw_changes)
+            title = f"Hardware inventory changed on {host.hostname}"
+            summary = (
+                f"Изменилось железо на {host.display_name or host.hostname}: {change_fields}"
+            )
+
     event = Event(
         event_id=event_id,
         host_id=host.id,
         occurred_at=_parse_dt(payload["occurred_at"]),
         category=payload["category"],
         type=payload["type"],
-        severity=payload["severity"],
-        title=payload["title"],
-        summary=payload["summary"],
+        severity=severity,
+        title=title,
+        summary=summary,
         details=details,
         raw=payload.get("raw"),
         dedup_key=payload.get("dedup_key"),