Generator: pilot analysis and fixes; G0002-G0021 tasks; handover notes merged

- Static bundle checks (name length, seed type, reserved words, contract test classes,
  testclasses_file), local abaplint parser check before SAP, max_tokens, robust JSON parse
- Runner: G2 for CDS views with parameters, contract_check detail in report
- G0020 and G0013 fixed by review and revalidated (oracle 100, null 0)
- Pilot results in docs/faz1-tasarim.md 11e; handover notes merged into CLAUDE.md and docs

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

tasks_gen/eval/G0004/task.json

@@ -0,0 +1,53 @@
+{
+  "id": "G0004",
+  "category": "C",
+  "object_type": "CLAS",
+  "difficulty": 2,
+  "release_target": "v816",
+  "expected_outcome": "implement",
+  "budget": {
+    "max_tool_calls": 60,
+    "max_activations": 12
+  },
+  "seed": [
+    {
+      "type": "INTF",
+      "name": "{{P}}IF_STOCK_AGE",
+      "file": "seed/if_stock_age.intf.abap",
+      "description": "Stock age contract: row types, bucket constants and the two analysis methods"
+    }
+  ],
+  "contract": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}STOCK_AGE",
+      "implements": "{{P}}IF_STOCK_AGE"
+    }
+  ],
+  "out_of_scope": [
+    "{{P}}IF_STOCK_AGE"
+  ],
+  "hidden_tests": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}STOCK_AGE_HIDDEN",
+      "file": "hidden/stock_age_hidden.clas.abap",
+      "description": "Hidden tests for the stock age analysis"
+    }
+  ],
+  "reference": [
+    {
+      "type": "CLAS",
+      "name": "{{P}}STOCK_AGE",
+      "file": "reference/stock_age.clas.abap",
+      "description": "Stock age analysis",
+      "testclasses_file": "reference/stock_age.testclasses.abap"
+    }
+  ],
+  "craft_checks": [
+    "table_kind",
+    "access_path",
+    "method_length",
+    "no_nested_loops"
+  ]
+}