[src] fix: correct stale version in annotation fallback notice, print once per task type

- notice hardcoded "v1.1.0 annotation updates" but fires for any requested
version, so a v1.1.1 request printed a message naming the wrong release
- reword version-agnostically ("every update after v1.0.0") and name the
actual taskType instead of listing all non-TL task types
- print once per task type per process via _FALLBACK_NOTICE_SHOWN; the notice
carries no per-dataset detail yet repeated for every config in a run
- annotation file resolution unchanged: the fallback assignment stays outside
the print guard

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

MedVision.py

@@ -51,6 +51,11 @@ _HOME_PAGE = "https://huggingface.co/datasets/YongchengYAO/MedVision"
 
 _LICENSE = "CC BY-NC 4.0"
 
+# Task types whose annotation-version fallback notice has already been printed in
+# this process. A benchmark run loads hundreds of configs, and the notice carries
+# no per-dataset information, so printing it once per task type is enough.
+_FALLBACK_NOTICE_SHOWN = set()
+
 
 def _enforce_release_ack(planner_version, latest_version):
     """Block silent use of outdated annotations (any task).
@@ -9012,29 +9017,33 @@ class MedVision(GeneratorBasedBuilder):
 
         bm_plan_file = get_bm_plan_file(dataset_dir, _planner_version)
 
-        # For non-TL tasks, v1.1.0 annotation files were never generated.
-        # Fall back to v1.0.0 with a printed explanation so the caller knows
-        # which file is actually being used.
+        # Annotation updates after v1.0.0 only changed the Tumor-Lesion-Size (TL)
+        # task, so no newer annotation file was ever generated for the other task
+        # types. Fall back to v1.0.0 and say so once per task type, so the caller
+        # knows which file is actually being used without drowning in notices.
         if not os.path.exists(bm_plan_file) and self.config.taskType != "Tumor-Lesion-Size":
             fallback_version = "1.0.0"
             bm_plan_file_fallback = get_bm_plan_file(dataset_dir, fallback_version)
             if os.path.exists(bm_plan_file_fallback):
-                print(
-                    "\n"
-                    "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n"
-                    " MedVision: annotation version fallback\n"
-                    "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n"
-                   f" Requested : {os.path.basename(bm_plan_file)}\n"
-                   f" Not found. Falling back to v{fallback_version} annotations.\n"
-                    "\n"
-                   f" Loaded    : {os.path.basename(bm_plan_file_fallback)}\n"
-                    "\n"
-                    " This is expected — v1.1.0 annotation updates only affected the\n"
-                    " Tumor-Lesion-Size (TL) task. All other task types (Mask-Size,\n"
-                    " Box-Size, Biometrics-From-Landmarks) were not changed and only\n"
-                   f" have v{fallback_version} annotation files.\n"
-                    "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n"
-                )
+                if self.config.taskType not in _FALLBACK_NOTICE_SHOWN:
+                    _FALLBACK_NOTICE_SHOWN.add(self.config.taskType)
+                    print(
+                        "\n"
+                        "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n"
+                        " MedVision: annotation version fallback (not an error)\n"
+                        "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n"
+                       f" Task type : {self.config.taskType}\n"
+                       f" Requested : {os.path.basename(bm_plan_file)}\n"
+                       f" Loaded    : {os.path.basename(bm_plan_file_fallback)}\n"
+                        "\n"
+                        " Every annotation update after v1.0.0 changed only the\n"
+                        " Tumor-Lesion-Size (TL) task, so no newer annotation file was\n"
+                        " ever generated for this task type. v1.0.0 IS the latest\n"
+                        " annotation for it, and these are the intended annotations.\n"
+                        "\n"
+                        " Shown once per task type; further datasets fall back silently.\n"
+                        "━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━\n"
+                    )
                 bm_plan_file = bm_plan_file_fallback
             else:
                 raise FileNotFoundError(