Remove the KVM tab: proxy, routes, config and state fields, UI

Not needed — the KVMs are reached over WireGuard.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

internal/config/config.go

@@ -77,23 +77,6 @@ type UpdateSource struct {
 	Check string `json:"check,omitempty"`
 }
 
-// KVM is an IP-KVM: a device with a web page that gives screen, keyboard and mouse access
-// to a machine, including when that machine has no OS running. Ham Lab holds the list on
-// the hub and proxies each one, because a KVM matters exactly when the machine it is
-// attached to cannot answer for itself.
-type KVM struct {
-	ID   string `json:"id"`
-	Name string `json:"name"`
-	// URL is the device's own address, as you would type it into a browser on the LAN.
-	URL string `json:"url"`
-	// Machine is the host this KVM is attached to, and is the key: one KVM per machine, shown
-	// on that machine's KVM tab. Empty means the hub itself. The list lives on the hub even
-	// for a node's KVM, because a KVM earns its keep when the machine is down and cannot
-	// answer for itself.
-	Machine string    `json:"machine"`
-	Added   time.Time `json:"added"`
-}
-
 type Config struct {
 	Listen string `json:"listen"`
 	// PasswordHash is the single login of installs before users existed. On load it becomes
@@ -103,7 +86,6 @@ type Config struct {
 	TLS          string  `json:"tls,omitempty"` // "auto" → self-signed cert in the data dir; "" → plain HTTP
 	Tokens       []Token `json:"tokens,omitempty"`
 	Nodes        []Node  `json:"nodes,omitempty"`
-	KVMs         []KVM   `json:"kvms,omitempty"`
 	// Updates: where a newer build comes from. See UpdateSource.
 	Updates UpdateSource `json:"update,omitempty"`