Revert "feat(config): implement loading and saving of bot node configuration with default notification settings"

This reverts commit ec1cf20347.

config/variables.go

@@ -175,18 +175,14 @@ var C_botUserConfig *BotUserConfig
 // file is auto-populated by the node tracker for every node Komari reports;
 // per-node options are edited by hand in the JSON file.
 type BotNodeOptions struct {
-	// EnableStatusNotify controls whether this node broadcasts status-change
-	// notifications. It defaults to true: only an explicit false in the JSON
-	// file disables a node's notifications. The pointer (rather than a plain
-	// bool) lets an absent field be told apart from an explicit false, and
-	// omitempty keeps untouched nodes stored as {}.
-	EnableStatusNotify *bool `json:"enableStatusNotify,omitempty"`
+	// EnableStatusNotify is an allow-list switch: a node broadcasts status-change
+	// notifications only when this is true. Nodes default to false (silent)
+	// unless explicitly enabled.
+	EnableStatusNotify bool `json:"enableStatusNotify"`
 }
 
 // BotNodeMembers maps a node UUID (as reported by Komari) to its per-node
-// options.
-type BotNodeMembers map[string]BotNodeOptions
-
-// C_botNodeConfig is the global singleton mirroring bot_node_config.json,
-// populated by LoadBotNodeConfig.
-var C_botNodeConfig BotNodeMembers
+// options, e.g. bot_node_config.json:
+//
+//	{"<uuid1>": {"enableStatusNotify": true}, "<uuid2>": {}}
+type BotNodeMembers map[string]BotNodeOptions