Update prefix/suffix naming in _prepare_script of app.py to ensure consistency with target parameters. This change improves clarity in metadata creation by correctly labeling the flags for target prefix and suffix.

app.py

@@ -322,9 +322,9 @@ def _prepare_script(
     # Inject prefix/suffix flags for metadata creation
     extra_lines: List[str] = []
     if (target_prefix or ""):
-        extra_lines.append(f"  --main_prefix {_bash_quote(target_prefix)} \\")
+        extra_lines.append(f"  --target_prefix {_bash_quote(target_prefix)} \\")
     if (target_suffix or ""):
-        extra_lines.append(f"  --main_suffix {_bash_quote(target_suffix)} \\")
+        extra_lines.append(f"  --target_suffix {_bash_quote(target_suffix)} \\")
     for i in range(8):
         pre = control_prefixes[i] if (control_prefixes and i < len(control_prefixes)) else None
         suf = control_suffixes[i] if (control_suffixes and i < len(control_suffixes)) else None
@@ -335,7 +335,13 @@ def _prepare_script(
 
     if extra_lines:
         extra_block = "\n".join(extra_lines)
-        txt = re.sub(r'^(\s*)"\$\{CONTROL_ARGS\[@\]\}"', rf"{extra_block}\n\1\"\${{CONTROL_ARGS[@]}}\"", txt, flags=re.MULTILINE)
+        # Insert extra flags just before the CONTROL_ARGS line, preserving indentation.
+        txt = re.sub(
+            r'^(\s*)"\$\{CONTROL_ARGS\[@\]\}"',
+            lambda m: f"{extra_block}\n{m.group(1)}\"${{CONTROL_ARGS[@]}}\"",
+            txt,
+            flags=re.MULTILINE,
+        )
 
     # Override CLI hyperparameters if provided
     if override_learning_rate: