fix(profiler): Save binary .prof files alongside .txt output

Technical fix to _run_with_profiling() to save both:
- .txt: Human-readable stats (existing)
- .prof: Binary profile for pstats/snakeviz analysis (was missing)

Enables deeper analysis with:
  python -c "import pstats; pstats.Stats('file.prof').print_stats(30)"
  snakeviz file.prof

Author: miranov25

UTILS/dfextensions/AliasDataFrame/AliasDataFrame.py

@@ -1725,8 +1725,15 @@ def _run_with_profiling(self, func, profile=False, profile_output=None):
 
             if profile_output:
                 from pathlib import Path
+                # Save text output
                 Path(profile_output).write_text(output)
                 print(f"[profiler] Results saved to: {profile_output}")
+                
+                # Also save binary .prof file for pstats/snakeviz analysis
+                prof_path = str(profile_output).replace('.txt', '.prof')
+                if prof_path != profile_output:  # Only if extension was .txt
+                    profiler.dump_stats(prof_path)
+                    print(f"[profiler] Binary profile saved to: {prof_path}")
             else:
                 print(output)