chore: strip pre-fork version comments across 72 files

Removes standalone "// v0.X.X:" comment lines and inline trailing
version annotations. Keeps version references in config field docs
and compatibility notes where they describe requirements.

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

server/events/bus_test.go

@@ -113,7 +113,7 @@ func TestRouteFor(t *testing.T) {
 		{"pong", DirToClient},
 		// Tool bridge routes
 		{"tool.call.abc123", DirToClient},
-		{"tool.result.abc123", DirBoth}, // v0.32.0: DirBoth for cross-pod WaitFor
+		{"tool.result.abc123", DirBoth},
 		// Extension lifecycle
 		{"extension.loaded", DirLocal},
 		{"extension.error", DirLocal},
@@ -227,7 +227,6 @@ func TestToolCallRouteToClient(t *testing.T) {
 }
 
 func TestToolResultRouteBoth(t *testing.T) {
-	// v0.32.0: tool.result is DirBoth so results cross pods for WaitFor.
 	// The WS subscriber explicitly filters out tool.result events to
 	// prevent re-sending to clients (see subscribeToBus in ws.go).
 	if !ShouldAcceptFromClient("tool.result.abc123") {