minor edits

app_v1.py

@@ -39,7 +39,9 @@ def _tag() -> str:
 
 
 def _tmp(tag: str, name: str) -> str:
-    return str(TMP / f"{tag}_{name}")
+    out_dir = TMP / f"deeponet_fpo_{tag}"
+    out_dir.mkdir(parents=True, exist_ok=True)
+    return str(out_dir / name)
 
 
 # ---------------- Samples ----------------

app_v2.py

@@ -39,7 +39,9 @@ def _tag() -> str:
     return next(tempfile._get_candidate_names())
 
 def _tmp(tag: str, name: str) -> str:
-    return str(TMP / f"{tag}_{name}")
+    out_dir = TMP / f"deeponet_fpo_{tag}"
+    out_dir.mkdir(parents=True, exist_ok=True)
+    return str(out_dir / name)
 
 # ---------------- Samples ----------------
 def list_samples():