FAILURE MAP
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FA-35466 / Tab interfaces / Open access

Cross pane move: target insertion · case 01

The tab workspace reports an incorrect target insertion.

Verified by executionVariant 1 · 6 checks per implementationDownload source bundle ↓JSON ↗

ROOT CAUSE

The target insertion decision uses x['target']+[x['moving']] instead of x['target'][:min(x['slot'],len(x['target']))]+[x['moving']]+x['target'][min(x['slot'],len(x['target'])):].

THE FAILURE

The target insertion decision uses x['target']+[x['moving']] instead of x['target'][:min(x['slot'],len(x['target']))]+[x['moving']]+x['target'][min(x['slot'],len(x['target'])):].

Unsuccessful approach: The partial repair [x['moving']]+x['target'] still violates a workspace boundary or normal case.

Case contract

Moving a tab removes its source view and inserts it exactly once in the target pane at a clamped slot, preserving document and view state.

Why this case matters

Offline tab/panel workspace behavior; no browser or desktop framework is emulated.

1 / The failure

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    r0 = [t for t in x['source'] if t!=x['moving']]
    r1 = x['target']+[x['moving']]
    r2 = {'view':x['moving'],'document':x['doc'],'scroll':x['scroll']}
    r3 = x['doc']
    r4 = x['scroll']
    r5 = x['moving']
    return [r0,r1,r2,r3,r4,r5]
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 28}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 28}, 'db', 28, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 2: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 56}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 56}, 'db', 56, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 3: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 84}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 84}, 'db', 84, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 4: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 112}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 112}, 'db', 112, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 5: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 140}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 140}, 'db', 140, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])]}
for i, (inputs, expected) in enumerate(fixtures[N]):
    check("workspace regression "+str(i), solve(inputs), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
workspace regression 0[['a', 'c'], ['d', 'e', 'b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['d', 'b', 'e'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Failed
workspace regression 1[['a', 'c'], ['d', 'e', 'b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['b', 'd', 'e'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Failed
workspace regression 2[['a', 'c'], ['d', 'e', 'b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['d', 'e', 'b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Passed
workspace regression 3[['b', 'c'], ['d', 'e', 'a'], {'document': 'db', 'scroll': 28, 'view': 'a'}, 'db', 28, 'a'][['b', 'c'], ['d', 'a', 'e'], {'document': 'db', 'scroll': 28, 'view': 'a'}, 'db', 28, 'a']Failed
workspace regression 4[['a', 'c'], ['b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Passed
workspace regression 5[['a', 'c'], ['d', 'e', 'b'], {'document': 'db', 'scroll': 0, 'view': 'b'}, 'db', 0, 'b'][['a', 'c'], ['d', 'b', 'e'], {'document': 'db', 'scroll': 0, 'view': 'b'}, 'db', 0, 'b']Failed

SHA-256 / 6be9bb88876ea4b4bfd7ff251823c3d3edba88dd229473b82437995a831bd7bd

2 / The unsuccessful fix

Exit 1
"""Failure Map reference implementation. Python standard library only."""
import json

N = 1
observations = []
def solve(x):
    r0 = [t for t in x['source'] if t!=x['moving']]
    r1 = [x['moving']]+x['target']
    r2 = {'view':x['moving'],'document':x['doc'],'scroll':x['scroll']}
    r3 = x['doc']
    r4 = x['scroll']
    r5 = x['moving']
    return [r0,r1,r2,r3,r4,r5]
def check(label, actual, expected):
    observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
fixtures = {1: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 28}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 28}, 'db', 28, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 28}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 28}, 'db', 28, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 2: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 56}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 56}, 'db', 56, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 56}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 56}, 'db', 56, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 3: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 84}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 84}, 'db', 84, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 84}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 84}, 'db', 84, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 4: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 112}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 112}, 'db', 112, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 112}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 112}, 'db', 112, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])], 5: [({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 0, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['b', 'd', 'e'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 5, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['d', 'e', 'b'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'a', 'slot': 1, 'doc': 'db', 'scroll': 140}, [['b', 'c'], ['d', 'a', 'e'], {'view': 'a', 'document': 'db', 'scroll': 140}, 'db', 140, 'a']), ({'source': ['a', 'b', 'c'], 'target': [], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 140}, [['a', 'c'], ['b'], {'view': 'b', 'document': 'db', 'scroll': 140}, 'db', 140, 'b']), ({'source': ['a', 'b', 'c'], 'target': ['d', 'e'], 'moving': 'b', 'slot': 1, 'doc': 'db', 'scroll': 0}, [['a', 'c'], ['d', 'b', 'e'], {'view': 'b', 'document': 'db', 'scroll': 0}, 'db', 0, 'b'])]}
for i, (inputs, expected) in enumerate(fixtures[N]):
    check("workspace regression "+str(i), solve(inputs), expected)
print(json.dumps({"observations": observations, "passed": all(x["passed"] for x in observations)}, ensure_ascii=False))
raise SystemExit(0 if all(x["passed"] for x in observations) else 1)
Boundary fixtureActualExpectedOutcome
workspace regression 0[['a', 'c'], ['b', 'd', 'e'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['d', 'b', 'e'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Failed
workspace regression 1[['a', 'c'], ['b', 'd', 'e'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['b', 'd', 'e'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Passed
workspace regression 2[['a', 'c'], ['b', 'd', 'e'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['d', 'e', 'b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Failed
workspace regression 3[['b', 'c'], ['a', 'd', 'e'], {'document': 'db', 'scroll': 28, 'view': 'a'}, 'db', 28, 'a'][['b', 'c'], ['d', 'a', 'e'], {'document': 'db', 'scroll': 28, 'view': 'a'}, 'db', 28, 'a']Failed
workspace regression 4[['a', 'c'], ['b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b'][['a', 'c'], ['b'], {'document': 'db', 'scroll': 28, 'view': 'b'}, 'db', 28, 'b']Passed
workspace regression 5[['a', 'c'], ['b', 'd', 'e'], {'document': 'db', 'scroll': 0, 'view': 'b'}, 'db', 0, 'b'][['a', 'c'], ['d', 'b', 'e'], {'document': 'db', 'scroll': 0, 'view': 'b'}, 'db', 0, 'b']Failed

SHA-256 / ab968091de078ad3fd99ab4180a68094830fb14325ad88859c8d047a13d349d7

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The verified repair and its recorded checks are member-only.

This mechanism has 6 recorded checks per implementation. The open-access tier publishes the failure and the unsuccessful fix; the repaired source that passes every check, and the observations that prove it, are available to members.

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Verification & scope

Finite stipulated workspace snapshots only. Independent result fields describe observable obligations, not a full UI runtime. 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.

Observations recorded using Python 3.12.14 at 2026-09-29T14:42:42.133227+00:00.

Case digest / d65e5054d2640a96e37c892b5225f237f9d2832cb49a26c955a33d5c2c9802b9