chore: strip remaining pre-fork version references

Second pass — removes chat-switchboard version numbers from config
field docs, section headers, file headers, and test comments. These
were pre-fork version tags that don't apply to switchboard-core.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

server/events/bus_test.go

@@ -117,10 +117,10 @@ func TestRouteFor(t *testing.T) {
 		// Extension lifecycle
 		{"extension.loaded", DirLocal},
 		{"extension.error", DirLocal},
-		// Realtime (v0.5.0)
+		// Realtime
 		{"realtime.chat.message", DirToClient},
 		{"realtime.custom.event", DirToClient},
-		// Room management (v0.5.0)
+		// Room management
 		{"room.subscribe", DirFromClient},
 		{"room.unsubscribe", DirFromClient},
 	}

server/events/types.go

@@ -47,16 +47,16 @@ var routeTable = map[string]Direction{
 	// Model/provider status
 	"model.status":      DirToClient,
 
-	// Role alerts (v0.17.0)
+	// Role alerts
 	"role.fallback":     DirToClient,
 
-	// Notifications (v0.20.0)
+	// Notifications
 	"notification.new":  DirToClient, // targeted via Hub.PublishToUser, not room-based
 	"notification.read": DirToClient, // badge sync across tabs
 
-	// Workspace (v0.21.5)
+	// Workspace
 
-	// Workflow (v0.27.0, v0.3.2, v0.3.3)
+	// Workflow
 	"workflow.started":    DirToClient, // instance started
 	"workflow.assigned":   DirToClient, // new assignment → team members
 	"workflow.claimed":    DirToClient, // assignment claimed → team + claimer
@@ -64,10 +64,10 @@ var routeTable = map[string]Direction{
 	"workflow.completed":  DirToClient, // workflow finished → instance participants
 	"workflow.cancelled":  DirToClient, // instance cancelled
 	"workflow.error":      DirToClient, // engine/hook error
-	"workflow.sla_breach": DirToClient, // SLA exceeded → team + admins (v0.3.3)
-	"workflow.stale":      DirToClient, // instance marked stale (v0.3.3)
-	"workflow.signoff":    DirToClient, // signoff submitted (v0.3.4)
-	"workflow.rejected":   DirToClient, // rejection triggered cancel/reroute (v0.3.4)
+	"workflow.sla_breach": DirToClient, // SLA exceeded → team + admins
+	"workflow.stale":      DirToClient, // instance marked stale
+	"workflow.signoff":    DirToClient, // signoff submitted
+	"workflow.rejected":   DirToClient, // rejection triggered cancel/reroute
 
 	// Plugin hooks — never cross the wire
 	"plugin.hook.":      DirLocal,
@@ -82,14 +82,14 @@ var routeTable = map[string]Direction{
 	"extension.loaded":  DirLocal,   // Client-only
 	"extension.error":   DirLocal,
 
-	// Trigger system (v0.2.2)
+	// Trigger system
 	"trigger.fired":     DirLocal,   // Trigger invocation event (observability)
 	"trigger.error":     DirLocal,   // Trigger execution error
 
-	// Realtime (v0.5.0): extension-published events, room-scoped
+	// Realtime: extension-published events, room-scoped
 	"realtime.":         DirToClient,
 
-	// Room management (v0.5.0): client room join/leave
+	// Room management: client room join/leave
 	"room.subscribe":    DirFromClient,
 	"room.unsubscribe":  DirFromClient,