Snapshot: new training tasks (balanced generation), docs

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

tasks_gen/train/_logs/G1952.json

@@ -0,0 +1,37 @@
+{
+ "id": "G1952",
+ "pool": "train",
+ "object_type": "TABL",
+ "category": "B",
+ "attempts": [
+  {
+   "stage": "bundle",
+   "errors": [
+    "hidden/t16_hidden.clas.abap line 70: syntax error for release v758 (abaplint): Statement does not exist in the configured ABAP version(or a parser error), \"DATA\""
+   ],
+   "by_check": {
+    "abaplint": 1
+   }
+  },
+  {
+   "stage": "validate",
+   "oracle": 0,
+   "null": 0
+  },
+  {
+   "stage": "validate",
+   "oracle": 69.0,
+   "null": 0
+  },
+  {
+   "stage": "validate",
+   "oracle": 85.0,
+   "null": 0
+  }
+ ],
+ "accepted": false,
+ "kind": "TABL",
+ "error_kind": "reserved-word",
+ "difficulty": 2,
+ "spent_total": 112.0254
+}