Fix coverage with several contract classes; table annotation and file path checks; clean task dir on write

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_014aUaQeLnwbb1zTpN7kHeat

tasks_gen/eval/G0126/task.json

@@ -0,0 +1,94 @@
+{
+  "id": "G0126",
+  "category": "D",
+  "object_type": "CLAS",
+  "difficulty": 2,
+  "release_target": "v816",
+  "expected_outcome": "implement",
+  "budget": {
+    "max_tool_calls": 70,
+    "max_activations": 15
+  },
+  "seed": [],
+  "contract": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}BAG_DROP"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_TAG"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_WEIGHT"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_SIZE"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_LIMIT"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_LATE"
+    }
+  ],
+  "out_of_scope": [
+    "CX_ROOT",
+    "CX_STATIC_CHECK"
+  ],
+  "hidden_tests": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}T_BAG_DROP_HIDDEN",
+      "file": "hidden/t_bag_drop_hidden.clas.abap",
+      "description": "Hidden tests for the baggage acceptance check"
+    }
+  ],
+  "reference": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_TAG",
+      "file": "reference/cx_bag_tag.clas.abap",
+      "description": "Invalid bag tag"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_WEIGHT",
+      "file": "reference/cx_bag_weight.clas.abap",
+      "description": "Bag is too heavy"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_SIZE",
+      "file": "reference/cx_bag_size.clas.abap",
+      "description": "Bag is too large"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_LIMIT",
+      "file": "reference/cx_bag_limit.clas.abap",
+      "description": "Bag limit reached"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}CX_BAG_LATE",
+      "file": "reference/cx_bag_late.clas.abap",
+      "description": "Check-in closed"
+    },
+    {
+      "type": "CLAS",
+      "name": "{{P}}BAG_DROP",
+      "file": "reference/bag_drop.clas.abap",
+      "description": "Baggage acceptance check",
+      "testclasses_file": "reference/bag_drop.testclasses.abap"
+    }
+  ],
+  "craft_checks": [
+    "method_length",
+    "exception_messages"
+  ]
+}