Replace per-project files with combined data/train.jsonl (509 rows) + dataset card

README.md

@@ -36,11 +36,14 @@ Each row corresponds to a single (project, `rev1` → `rev2`) pair. Inside the r
 
 | | |
 |---|---|
-| Rows | 509 |
+| Tasks (rows) | 509 |
+| Test methods | 1,138 |
 | Source projects | 59 distinct Java repositories on GitHub |
 | Java versions | 8, 11, 17, 21 |
 | Build system | Maven |
-| Total size | ~6 MB |
+| Total size | ~9 MB |
+
+A **task** is one (project, rev1 → rev2) pair — the unit a model is asked to operate on. A **test method** is one entry inside that task's `test_changes` list — a single `@Test` method that was modified between `rev1` and `rev2`. One task may contain several related test edits committed together; benchmarks can be reported at either granularity.
 
 ## Schema