v3.42.11: Replace all Unicode emojis with ASCII text

- Replace all emoji characters with ASCII equivalents throughout codebase
- Replace Unicode box-drawing characters (═║╔╗╚╝━─) with ASCII (+|-=)
- Replace checkmarks (✓✗) with [OK]/[FAIL] markers
- 59 files updated, 741 lines changed
- Improves terminal compatibility and reduces visual noise

main.go

@@ -52,7 +52,7 @@ func main() {
 		if metrics.GlobalMetrics != nil {
 			avgs := metrics.GlobalMetrics.GetAverages()
 			if ops, ok := avgs["total_operations"].(int); ok && ops > 0 {
-				fmt.Printf("\n📊 Session Summary: %d operations, %.1f%% success rate\n",
+				fmt.Printf("\n[INFO] Session Summary: %d operations, %.1f%% success rate\n",
 					ops, avgs["success_rate"])
 			}
 		}