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/G0117/task.json

@@ -0,0 +1,51 @@
+{
+  "id": "G0117",
+  "category": "C",
+  "object_type": "CLAS",
+  "difficulty": 2,
+  "release_target": "v816",
+  "expected_outcome": "implement",
+  "budget": {
+    "max_tool_calls": 60,
+    "max_activations": 15
+  },
+  "seed": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}TOOL_MASTER",
+      "file": "seed/tool_master.clas.abap",
+      "description": "Tool master with the tool IDs that the crib has in stock"
+    }
+  ],
+  "contract": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}TOOL_CRIB"
+    }
+  ],
+  "out_of_scope": [
+    "{{P}}TOOL_MASTER"
+  ],
+  "hidden_tests": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}T11_HIDDEN",
+      "file": "hidden/t11_hidden.clas.abap",
+      "description": "Hidden tests for the tool crib loan book"
+    }
+  ],
+  "reference": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}TOOL_CRIB",
+      "file": "reference/tool_crib.clas.abap",
+      "description": "Tool crib loan book",
+      "testclasses_file": "reference/tool_crib.testclasses.abap"
+    }
+  ],
+  "craft_checks": [
+    "method_length",
+    "internal_table_key",
+    "table_access_path"
+  ]
+}