Clarify archived task success counts

seta_v2/README.md

@@ -2,7 +2,7 @@
 
 ## Dataset stats
 
-- **Tasks:** 4,567 original SETA tasks; 3,107 kept in v1. The current v2 release keeps 2,205 and archives 902. Archived tasks have no recorded model success in the available results; some runs are incomplete.
+- **Tasks:** 4,567 original SETA tasks; 3,107 kept in v1; 2,205 kept in v2. The 902 archived tasks have no recorded success for Qwen3-30B-A3B-Instruct-2507 or Qwen3-30B-Thinking; some have fewer than 16 scored attempts.
 - **Environments:** v2 reuses the cached Apptainer environments from v1.
 
 ## Successful attempts