chore(agent): satisfy staticcheck S1016 on capabilities handler

CapabilityEntry has the same field types as ProbeResult (just JSON tags
on top), so staticcheck wants the explicit conversion instead of a
field-by-field literal. Functionally identical — stable Go conversion
since 1.8 (struct tags don't affect convertibility).

Author: sarg3nt

gearbox-agent/internal/framework/gear/manager.go

@@ -496,12 +496,7 @@ func (m *Manager) handleCapabilities(w http.ResponseWriter, r *http.Request) {
 	out := CapabilitiesResponse{Gears: make(map[string]CapabilityEntry, len(plugins))}
 	for _, p := range plugins {
 		name := p.Info().Name
-		pr := results[name]
-		out.Gears[name] = CapabilityEntry{
-			Status:       pr.Status,
-			Reason:       pr.Reason,
-			Capabilities: pr.Capabilities,
-		}
+		out.Gears[name] = CapabilityEntry(results[name])
 	}
 	w.Header().Set("Content-Type", "application/json")
 	if err := json.NewEncoder(w).Encode(out); err != nil {