chore: ruff auto-fixes — collapsible-else-if, if-stmt-min-max, dict.fromkeys (#23926)

PLR5501 (collapsible-else-if): 28 instances — else: if: → elif:
PLR1730 (if-stmt-min-max):   15 instances — if x<y: x=y → x=max(x,y)
C420   (dict.fromkeys):       2 instances — dictcomp → dict.fromkeys
PLR1704 (redefined-argument): 1 instance — reason → err_msg (shadow fix)
C414   (unnecessary-list):    1 instance — sorted(list(x)) → sorted(x)

28 files, -44 net lines. All mechanical, zero logic changes.
17,211 tests pass, zero regressions.

hermes_cli/claw.py

@@ -670,17 +670,16 @@ def _cmd_cleanup(args):
         elif not auto_yes and not sys.stdin.isatty():
             print_info(f"Non-interactive session — would archive: {source_dir}")
             print_info("To execute, re-run with: hermes claw cleanup --yes")
+        elif auto_yes or prompt_yes_no(f"Archive {source_dir}?", default=True):
+            try:
+                archive_path = _archive_directory(source_dir)
+                print_success(f"Archived: {source_dir} → {archive_path}")
+                total_archived += 1
+            except OSError as e:
+                print_error(f"Could not archive: {e}")
+                print_info(f"Try manually: mv {source_dir} {source_dir}.pre-migration")
         else:
-            if auto_yes or prompt_yes_no(f"Archive {source_dir}?", default=True):
-                try:
-                    archive_path = _archive_directory(source_dir)
-                    print_success(f"Archived: {source_dir} → {archive_path}")
-                    total_archived += 1
-                except OSError as e:
-                    print_error(f"Could not archive: {e}")
-                    print_info(f"Try manually: mv {source_dir} {source_dir}.pre-migration")
-            else:
-                print_info("Skipped.")
+            print_info("Skipped.")
 
     # Summary
     print()