{"abstract":"Resize deltas replace the absolute panel size.","category":"Direct manipulation","checks":8,"contract":"Disabled handles preserve size; trailing-axis handles reverse delta; add deltas to current size and clamp to min/max.","evaluation_group":"xi-resize-handle","failed_approach":"Subtracting reverses drag meaning.","family":"xi-resize-handle-accumulate","id":"FA-8766","implementations":{"attempt":{"sha256":"f087910c56883bdb531b016dd162c3b38ea6d9f358bf9de26d0c112cf23a448d","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(size, delta, minimum, maximum, reversed_axis, disabled):\n    if disabled: return size\n    change = -delta if reversed_axis else delta\n    wanted = size - change\n    return max(minimum, min(maximum, wanted))\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('disabled', solve(50, 10, 20, 100, False, True), 50)\ncheck('forward', solve(50, 10, 20, 100, False, False), 60)\ncheck('reversed', solve(50, 10, 20, 100, True, False), 40)\ncheck('min', solve(30, -50, 20, 100, False, False), 20)\ncheck('max', solve(80, 50, 20, 100, False, False), 100)\ncheck('zero', solve(50, 0, 20, 100, False, False), 50)\ncheck('parameterized resize distance', solve(10*N,N,0,100*N,False,False),11*N)\nfor repetition in range(N):\n    check('repeat zero', solve(50, 0, 20, 100, False, False), 50)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"broken":{"sha256":"aa578bea6cad591525e334a3a8e378b2f051b8f0f205f0c5c3b4e452b715c5c0","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(size, delta, minimum, maximum, reversed_axis, disabled):\n    if disabled: return size\n    change = -delta if reversed_axis else delta\n    wanted = change\n    return max(minimum, min(maximum, wanted))\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('disabled', solve(50, 10, 20, 100, False, True), 50)\ncheck('forward', solve(50, 10, 20, 100, False, False), 60)\ncheck('reversed', solve(50, 10, 20, 100, True, False), 40)\ncheck('min', solve(30, -50, 20, 100, False, False), 20)\ncheck('max', solve(80, 50, 20, 100, False, False), 100)\ncheck('zero', solve(50, 0, 20, 100, False, False), 50)\ncheck('parameterized resize distance', solve(10*N,N,0,100*N,False,False),11*N)\nfor repetition in range(N):\n    check('repeat zero', solve(50, 0, 20, 100, False, False), 50)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"},"fixed":{"sha256":"c9c3aef31922fe4ccbb39dbe52a30550f21c31cf7b5cf382a9dd2921ab3e4ac8","source":"\"\"\"Failure Map reference implementation. Python standard library only.\"\"\"\nimport json\n\nN = 1\nobservations = []\ndef solve(size, delta, minimum, maximum, reversed_axis, disabled):\n    if disabled: return size\n    change = -delta if reversed_axis else delta\n    wanted = size + change\n    return max(minimum, min(maximum, wanted))\ndef check(label, actual, expected):\n    observations.append({\"check\": label, \"actual\": actual, \"expected\": expected, \"passed\": actual == expected})\ncheck('disabled', solve(50, 10, 20, 100, False, True), 50)\ncheck('forward', solve(50, 10, 20, 100, False, False), 60)\ncheck('reversed', solve(50, 10, 20, 100, True, False), 40)\ncheck('min', solve(30, -50, 20, 100, False, False), 20)\ncheck('max', solve(80, 50, 20, 100, False, False), 100)\ncheck('zero', solve(50, 0, 20, 100, False, False), 50)\ncheck('parameterized resize distance', solve(10*N,N,0,100*N,False,False),11*N)\nfor repetition in range(N):\n    check('repeat zero', solve(50, 0, 20, 100, False, False), 50)\nprint(json.dumps({\"observations\": observations, \"passed\": all(x[\"passed\"] for x in observations)}, ensure_ascii=False))\nraise SystemExit(0 if all(x[\"passed\"] for x in observations) else 1)\n"}},"limitations":" This reproducer isolates one failure mechanism. Results cover the supplied fixtures. Variants within a family share a test contract and should remain grouped when constructing evaluation splits. Related mechanisms with a shared evaluation_group must also remain together; these controlled models are not independent production incidents.","method":"Deterministic executable model with adversarial boundary fixtures.","provenance":{"created_by":"Failure Map","dependencies":"Python standard library","family":"xi-resize-handle-accumulate","generated_at":"2026-09-29T14:38:24.255882+00:00","license":"CC0-1.0","python":"3.12.14","seed":1,"split":"open-access"},"relevance":"A deterministic model of resizable panel constraint handling; this isolates one interface invariant without requiring a browser.","repair":"Implement the accumulate operation as `size + change`.","root_cause":"The accumulate operation uses `change` where the contract requires `size + change`.","sha256":"fc2536c1fdc8d534e78c02d2f28935da8c69b03717a38ba64f1f3e6088c2b6ce","title":"Resizable panel constraint handling: Resize deltas replace the absolute panel size · case 01","variant":1,"variant_policy":"Five numbered records share a model and may reuse boundary fixtures.","verification":{"attempt":{"elapsed_ms":38.295,"exit_code":1,"observations":[{"actual":50,"check":"disabled","expected":50,"passed":true},{"actual":40,"check":"forward","expected":60,"passed":false},{"actual":60,"check":"reversed","expected":40,"passed":false},{"actual":80,"check":"min","expected":20,"passed":false},{"actual":30,"check":"max","expected":100,"passed":false},{"actual":50,"check":"zero","expected":50,"passed":true},{"actual":9,"check":"parameterized resize distance","expected":11,"passed":false},{"actual":50,"check":"repeat zero","expected":50,"passed":true}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"disabled\", \"actual\": 50, \"expected\": 50, \"passed\": true}, {\"check\": \"forward\", \"actual\": 40, \"expected\": 60, \"passed\": false}, {\"check\": \"reversed\", \"actual\": 60, \"expected\": 40, \"passed\": false}, {\"check\": \"min\", \"actual\": 80, \"expected\": 20, \"passed\": false}, {\"check\": \"max\", \"actual\": 30, \"expected\": 100, \"passed\": false}, {\"check\": \"zero\", \"actual\": 50, \"expected\": 50, \"passed\": true}, {\"check\": \"parameterized resize distance\", \"actual\": 9, \"expected\": 11, \"passed\": false}, {\"check\": \"repeat zero\", \"actual\": 50, \"expected\": 50, \"passed\": true}], \"passed\": false}\n"},"broken":{"elapsed_ms":40.006,"exit_code":1,"observations":[{"actual":50,"check":"disabled","expected":50,"passed":true},{"actual":20,"check":"forward","expected":60,"passed":false},{"actual":20,"check":"reversed","expected":40,"passed":false},{"actual":20,"check":"min","expected":20,"passed":true},{"actual":50,"check":"max","expected":100,"passed":false},{"actual":20,"check":"zero","expected":50,"passed":false},{"actual":1,"check":"parameterized resize distance","expected":11,"passed":false},{"actual":20,"check":"repeat zero","expected":50,"passed":false}],"passed":false,"stderr":"","stdout":"{\"observations\": [{\"check\": \"disabled\", \"actual\": 50, \"expected\": 50, \"passed\": true}, {\"check\": \"forward\", \"actual\": 20, \"expected\": 60, \"passed\": false}, {\"check\": \"reversed\", \"actual\": 20, \"expected\": 40, \"passed\": false}, {\"check\": \"min\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"max\", \"actual\": 50, \"expected\": 100, \"passed\": false}, {\"check\": \"zero\", \"actual\": 20, \"expected\": 50, \"passed\": false}, {\"check\": \"parameterized resize distance\", \"actual\": 1, \"expected\": 11, \"passed\": false}, {\"check\": \"repeat zero\", \"actual\": 20, \"expected\": 50, \"passed\": false}], \"passed\": false}\n"},"fixed":{"elapsed_ms":36.045,"exit_code":0,"observations":[{"actual":50,"check":"disabled","expected":50,"passed":true},{"actual":60,"check":"forward","expected":60,"passed":true},{"actual":40,"check":"reversed","expected":40,"passed":true},{"actual":20,"check":"min","expected":20,"passed":true},{"actual":100,"check":"max","expected":100,"passed":true},{"actual":50,"check":"zero","expected":50,"passed":true},{"actual":11,"check":"parameterized resize distance","expected":11,"passed":true},{"actual":50,"check":"repeat zero","expected":50,"passed":true}],"passed":true,"stderr":"","stdout":"{\"observations\": [{\"check\": \"disabled\", \"actual\": 50, \"expected\": 50, \"passed\": true}, {\"check\": \"forward\", \"actual\": 60, \"expected\": 60, \"passed\": true}, {\"check\": \"reversed\", \"actual\": 40, \"expected\": 40, \"passed\": true}, {\"check\": \"min\", \"actual\": 20, \"expected\": 20, \"passed\": true}, {\"check\": \"max\", \"actual\": 100, \"expected\": 100, \"passed\": true}, {\"check\": \"zero\", \"actual\": 50, \"expected\": 50, \"passed\": true}, {\"check\": \"parameterized resize distance\", \"actual\": 11, \"expected\": 11, \"passed\": true}, {\"check\": \"repeat zero\", \"actual\": 50, \"expected\": 50, \"passed\": true}], \"passed\": true}\n"}},"verified":true,"visibility":"public"}