Snapshot: new training tasks (balanced generation), docs

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

tasks_gen/train/_logs/G1922.json

@@ -0,0 +1,39 @@
+{
+ "id": "G1922",
+ "pool": "train",
+ "object_type": "DDLS",
+ "category": "E",
+ "attempts": [
+  {
+   "stage": "bundle",
+   "errors": [
+    "Too close to task G0145 (similarity spec 0.57, rules 0.61, names 0.00). Choose a different business topic and different object names.",
+    "Too close to task G0146 (similarity spec 0.71, rules 0.64, names 0.00). Choose a different business topic and different object names.",
+    "Too close to task G0147 (similarity spec 0.73, rules 0.70, names 0.00). Choose a different business topic and different object names."
+   ],
+   "by_check": {
+    "extra": 3
+   }
+  },
+  {
+   "stage": "validate",
+   "oracle": null,
+   "null": null
+  },
+  {
+   "stage": "validate",
+   "oracle": null,
+   "null": null
+  },
+  {
+   "stage": "validate",
+   "oracle": null,
+   "null": null
+  }
+ ],
+ "accepted": false,
+ "kind": "DDLS",
+ "error_kind": "reserved-word",
+ "difficulty": 2,
+ "spent_total": 103.1111
+}