FA-34306 / Notification interfaces / Open access
Notification digest assembly presentation: paint-success from publishing · case 01
The paint-success event leaves a notification in ready instead of published.
ROOT CAUSE
Paint confirmation leaves the digest eligible for duplicate publication.
THE FAILURE
Paint confirmation leaves the digest eligible for duplicate publication.
Unsuccessful approach: Erasing the digest loses its readable summary.
Case contract
Notification digest assembly presentation is a bounded visual-notification workflow with mutable policy state {'members': ['a', 'b'], 'sealed': [], 'next_window': [], 'shown': []}. Its default transition relation is {('collecting', 'close-window'): 'sealing', ('sealing', 'seal-success'): 'ready', ('ready', 'show-digest'): 'publishing', ('publishing', 'paint-success'): 'published', ('publishing', 'paint-failure'): 'publish-error', ('publish-error', 'retry-show'): 'publishing', ('published', 'expand-digest'): 'expanded', ('expanded', 'collapse-digest'): 'published', ('sealing', 'late-item'): 'sealing', ('collecting', 'close-empty-window'): 'empty'}; domain inputs can suppress or redirect transitions and update policy fields, as specified in solve. Different-generation events are inert. Batches apply in order. Optional observe returns the selected policy field alongside the phase.
Why this case matters
Visual notification lifecycle ordering can leave an inbox or toast showing the wrong actionable state even when transport succeeds.
1 / The failure
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(initial, events, generation, payload=None, observe=None):
table = {('collecting', 'close-window'): 'sealing', ('sealing', 'seal-success'): 'ready', ('ready', 'show-digest'): 'publishing', ('publishing', 'paint-success'): 'ready', ('publishing', 'paint-failure'): 'publish-error', ('publish-error', 'retry-show'): 'publishing', ('published', 'expand-digest'): 'expanded', ('expanded', 'collapse-digest'): 'published', ('sealing', 'late-item'): 'sealing', ('collecting', 'close-empty-window'): 'empty'}
data = json.loads(json.dumps({'members': ['a', 'b'], 'sealed': [], 'next_window': [], 'shown': []})) if payload is None else {**json.loads(json.dumps({'members': ['a', 'b'], 'sealed': [], 'next_window': [], 'shown': []})), **json.loads(json.dumps(payload))}
state = initial
for delivery in events:
event, event_generation = delivery[:2]
arg = delivery[2] if len(delivery) > 2 else {}
if event_generation == generation:
previous = state
if event == 'close-empty-window' and data['members']: event = 'close-window'
if event == 'late-item': data['next_window'].append(arg.get('item','late'))
if event == 'seal-success': data['sealed'] = data['members'][:]
state = table.get((state, event), state)
if state == 'published': data['shown'] = data['sealed'][:]
if state == 'empty': data['shown'] = []
return {'phase': state, 'value': data[observe]} if observe else state
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('collecting / close-window', solve('collecting', [('close-window', N)], N), 'sealing')
check('sealing / seal-success', solve('sealing', [('seal-success', N)], N), 'ready')
check('ready / show-digest', solve('ready', [('show-digest', N)], N), 'publishing')
check('publishing / paint-success', solve('publishing', [('paint-success', N)], N), 'published')
check('publishing / paint-failure', solve('publishing', [('paint-failure', N)], N), 'publish-error')
check('publish-error / retry-show', solve('publish-error', [('retry-show', N)], N), 'publishing')
check('published / expand-digest', solve('published', [('expand-digest', N)], N), 'expanded')
check('expanded / collapse-digest', solve('expanded', [('collapse-digest', N)], N), 'published')
check('sealing / late-item', solve('sealing', [('late-item', N)], N), 'sealing')
check('collecting / close-empty-window', solve('collecting', [('close-empty-window', N)], N, {'members': []}), 'empty')
check('older notification incarnation', solve('collecting', [('close-window', N - 1)], N), 'collecting')
check('future notification incarnation', solve('collecting', [('close-window', N + 1)], N), 'collecting')
check('unknown event is inert', solve('collecting', [('unknown-event', N)], N), 'collecting')
check('empty delivery batch', solve('collecting', [], N), 'collecting')
check('N stale deliveries before current delivery', solve('collecting', [('close-window', N - 1)] * N + [('close-window', N)], N), 'sealing')
check('trace close-window then seal-success', solve('collecting', [('close-window', N), ('seal-success', N)], N), 'ready')
check('trace close-window then late-item', solve('collecting', [('close-window', N), ('late-item', N)], N), 'sealing')
check('trace seal-success then show-digest', solve('sealing', [('seal-success', N), ('show-digest', N)], N), 'publishing')
check('trace show-digest then paint-success', solve('ready', [('show-digest', N), ('paint-success', N)], N), 'published')
check('trace show-digest then paint-failure', solve('ready', [('show-digest', N), ('paint-failure', N)], N), 'publish-error')
check('trace paint-success then expand-digest', solve('publishing', [('paint-success', N), ('expand-digest', N)], N), 'expanded')
check('trace paint-failure then retry-show', solve('publishing', [('paint-failure', N), ('retry-show', N)], N), 'publishing')
check('trace retry-show then paint-success', solve('publish-error', [('retry-show', N), ('paint-success', N)], N), 'published')
check('trace retry-show then paint-failure', solve('publish-error', [('retry-show', N), ('paint-failure', N)], N), 'publish-error')
check('trace expand-digest then collapse-digest', solve('published', [('expand-digest', N), ('collapse-digest', N)], N), 'published')
check('trace collapse-digest then expand-digest', solve('expanded', [('collapse-digest', N), ('expand-digest', N)], N), 'expanded')
check('trace late-item then seal-success', solve('sealing', [('late-item', N), ('seal-success', N)], N), 'ready')
check('trace late-item then late-item', solve('sealing', [('late-item', N), ('late-item', N)], N), 'sealing')
check('domain state regression 1: members', solve('collecting', [('close-empty-window', N, {})], N, {}, 'members'), {'phase': 'sealing', 'value': ['a', 'b']})
check('domain state regression 2: shown', solve('collecting', [('close-empty-window', N, {})], N, {'members': []}, 'shown'), {'phase': 'empty', 'value': []})
check('domain state regression 3: sealed', solve('sealing', [('seal-success', N, {})], N, {}, 'sealed'), {'phase': 'ready', 'value': ['a', 'b']})
check('domain state regression 4: members', solve('sealing', [('late-item', N, {'item': 'c'})], N, {}, 'members'), {'phase': 'sealing', 'value': ['a', 'b']})
check('domain state regression 5: next_window', solve('sealing', [('late-item', N, {'item': 'c'})], N, {}, 'next_window'), {'phase': 'sealing', 'value': ['c']})
check('domain state regression 6: shown', solve('publishing', [('paint-success', N, {})], N, {'sealed': ['a']}, 'shown'), {'phase': 'published', 'value': ['a']})
check('domain state regression 7: shown', solve('collecting', [('close-window', N, {}), ('late-item', N, {'item': 'c'}), ('seal-success', N, {}), ('show-digest', N, {}), ('paint-success', N, {})], N, {}, 'shown'), {'phase': 'published', 'value': ['a', 'b']})
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| collecting / close-window | sealing | sealing | Passed |
| sealing / seal-success | ready | ready | Passed |
| ready / show-digest | publishing | publishing | Passed |
| publishing / paint-success | ready | published | Failed |
| publishing / paint-failure | publish-error | publish-error | Passed |
| publish-error / retry-show | publishing | publishing | Passed |
| published / expand-digest | expanded | expanded | Passed |
| expanded / collapse-digest | published | published | Passed |
| sealing / late-item | sealing | sealing | Passed |
| collecting / close-empty-window | empty | empty | Passed |
| older notification incarnation | collecting | collecting | Passed |
| future notification incarnation | collecting | collecting | Passed |
| unknown event is inert | collecting | collecting | Passed |
| empty delivery batch | collecting | collecting | Passed |
| N stale deliveries before current delivery | sealing | sealing | Passed |
| trace close-window then seal-success | ready | ready | Passed |
| trace close-window then late-item | sealing | sealing | Passed |
| trace seal-success then show-digest | publishing | publishing | Passed |
| trace show-digest then paint-success | ready | published | Failed |
| trace show-digest then paint-failure | publish-error | publish-error | Passed |
| trace paint-success then expand-digest | ready | expanded | Failed |
| trace paint-failure then retry-show | publishing | publishing | Passed |
| trace retry-show then paint-success | ready | published | Failed |
| trace retry-show then paint-failure | publish-error | publish-error | Passed |
| trace expand-digest then collapse-digest | published | published | Passed |
| trace collapse-digest then expand-digest | expanded | expanded | Passed |
| trace late-item then seal-success | ready | ready | Passed |
| trace late-item then late-item | sealing | sealing | Passed |
| domain state regression 1: members | {'phase': 'sealing', 'value': ['a', 'b']} | {'phase': 'sealing', 'value': ['a', 'b']} | Passed |
| domain state regression 2: shown | {'phase': 'empty', 'value': []} | {'phase': 'empty', 'value': []} | Passed |
| domain state regression 3: sealed | {'phase': 'ready', 'value': ['a', 'b']} | {'phase': 'ready', 'value': ['a', 'b']} | Passed |
| domain state regression 4: members | {'phase': 'sealing', 'value': ['a', 'b']} | {'phase': 'sealing', 'value': ['a', 'b']} | Passed |
| domain state regression 5: next_window | {'phase': 'sealing', 'value': ['c']} | {'phase': 'sealing', 'value': ['c']} | Passed |
| domain state regression 6: shown | {'phase': 'ready', 'value': []} | {'phase': 'published', 'value': ['a']} | Failed |
| domain state regression 7: shown | {'phase': 'ready', 'value': []} | {'phase': 'published', 'value': ['a', 'b']} | Failed |
SHA-256 / 8bc73c1da8cdadddd305c45912686a092562da9bb9736b7f07961a6422992eeb
2 / The unsuccessful fix
Exit 1"""Failure Map reference implementation. Python standard library only."""
import json
N = 1
observations = []
def solve(initial, events, generation, payload=None, observe=None):
table = {('collecting', 'close-window'): 'sealing', ('sealing', 'seal-success'): 'ready', ('ready', 'show-digest'): 'publishing', ('publishing', 'paint-success'): 'empty', ('publishing', 'paint-failure'): 'publish-error', ('publish-error', 'retry-show'): 'publishing', ('published', 'expand-digest'): 'expanded', ('expanded', 'collapse-digest'): 'published', ('sealing', 'late-item'): 'sealing', ('collecting', 'close-empty-window'): 'empty'}
data = json.loads(json.dumps({'members': ['a', 'b'], 'sealed': [], 'next_window': [], 'shown': []})) if payload is None else {**json.loads(json.dumps({'members': ['a', 'b'], 'sealed': [], 'next_window': [], 'shown': []})), **json.loads(json.dumps(payload))}
state = initial
for delivery in events:
event, event_generation = delivery[:2]
arg = delivery[2] if len(delivery) > 2 else {}
if event_generation == generation:
previous = state
if event == 'close-empty-window' and data['members']: event = 'close-window'
if event == 'late-item': data['next_window'].append(arg.get('item','late'))
if event == 'seal-success': data['sealed'] = data['members'][:]
state = table.get((state, event), state)
if state == 'published': data['shown'] = data['sealed'][:]
if state == 'empty': data['shown'] = []
return {'phase': state, 'value': data[observe]} if observe else state
def check(label, actual, expected):
observations.append({"check": label, "actual": actual, "expected": expected, "passed": actual == expected})
check('collecting / close-window', solve('collecting', [('close-window', N)], N), 'sealing')
check('sealing / seal-success', solve('sealing', [('seal-success', N)], N), 'ready')
check('ready / show-digest', solve('ready', [('show-digest', N)], N), 'publishing')
check('publishing / paint-success', solve('publishing', [('paint-success', N)], N), 'published')
check('publishing / paint-failure', solve('publishing', [('paint-failure', N)], N), 'publish-error')
check('publish-error / retry-show', solve('publish-error', [('retry-show', N)], N), 'publishing')
check('published / expand-digest', solve('published', [('expand-digest', N)], N), 'expanded')
check('expanded / collapse-digest', solve('expanded', [('collapse-digest', N)], N), 'published')
check('sealing / late-item', solve('sealing', [('late-item', N)], N), 'sealing')
check('collecting / close-empty-window', solve('collecting', [('close-empty-window', N)], N, {'members': []}), 'empty')
check('older notification incarnation', solve('collecting', [('close-window', N - 1)], N), 'collecting')
check('future notification incarnation', solve('collecting', [('close-window', N + 1)], N), 'collecting')
check('unknown event is inert', solve('collecting', [('unknown-event', N)], N), 'collecting')
check('empty delivery batch', solve('collecting', [], N), 'collecting')
check('N stale deliveries before current delivery', solve('collecting', [('close-window', N - 1)] * N + [('close-window', N)], N), 'sealing')
check('trace close-window then seal-success', solve('collecting', [('close-window', N), ('seal-success', N)], N), 'ready')
check('trace close-window then late-item', solve('collecting', [('close-window', N), ('late-item', N)], N), 'sealing')
check('trace seal-success then show-digest', solve('sealing', [('seal-success', N), ('show-digest', N)], N), 'publishing')
check('trace show-digest then paint-success', solve('ready', [('show-digest', N), ('paint-success', N)], N), 'published')
check('trace show-digest then paint-failure', solve('ready', [('show-digest', N), ('paint-failure', N)], N), 'publish-error')
check('trace paint-success then expand-digest', solve('publishing', [('paint-success', N), ('expand-digest', N)], N), 'expanded')
check('trace paint-failure then retry-show', solve('publishing', [('paint-failure', N), ('retry-show', N)], N), 'publishing')
check('trace retry-show then paint-success', solve('publish-error', [('retry-show', N), ('paint-success', N)], N), 'published')
check('trace retry-show then paint-failure', solve('publish-error', [('retry-show', N), ('paint-failure', N)], N), 'publish-error')
check('trace expand-digest then collapse-digest', solve('published', [('expand-digest', N), ('collapse-digest', N)], N), 'published')
check('trace collapse-digest then expand-digest', solve('expanded', [('collapse-digest', N), ('expand-digest', N)], N), 'expanded')
check('trace late-item then seal-success', solve('sealing', [('late-item', N), ('seal-success', N)], N), 'ready')
check('trace late-item then late-item', solve('sealing', [('late-item', N), ('late-item', N)], N), 'sealing')
check('domain state regression 1: members', solve('collecting', [('close-empty-window', N, {})], N, {}, 'members'), {'phase': 'sealing', 'value': ['a', 'b']})
check('domain state regression 2: shown', solve('collecting', [('close-empty-window', N, {})], N, {'members': []}, 'shown'), {'phase': 'empty', 'value': []})
check('domain state regression 3: sealed', solve('sealing', [('seal-success', N, {})], N, {}, 'sealed'), {'phase': 'ready', 'value': ['a', 'b']})
check('domain state regression 4: members', solve('sealing', [('late-item', N, {'item': 'c'})], N, {}, 'members'), {'phase': 'sealing', 'value': ['a', 'b']})
check('domain state regression 5: next_window', solve('sealing', [('late-item', N, {'item': 'c'})], N, {}, 'next_window'), {'phase': 'sealing', 'value': ['c']})
check('domain state regression 6: shown', solve('publishing', [('paint-success', N, {})], N, {'sealed': ['a']}, 'shown'), {'phase': 'published', 'value': ['a']})
check('domain state regression 7: shown', solve('collecting', [('close-window', N, {}), ('late-item', N, {'item': 'c'}), ('seal-success', N, {}), ('show-digest', N, {}), ('paint-success', N, {})], N, {}, 'shown'), {'phase': 'published', 'value': ['a', 'b']})
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 fixture | Actual | Expected | Outcome |
|---|---|---|---|
| collecting / close-window | sealing | sealing | Passed |
| sealing / seal-success | ready | ready | Passed |
| ready / show-digest | publishing | publishing | Passed |
| publishing / paint-success | empty | published | Failed |
| publishing / paint-failure | publish-error | publish-error | Passed |
| publish-error / retry-show | publishing | publishing | Passed |
| published / expand-digest | expanded | expanded | Passed |
| expanded / collapse-digest | published | published | Passed |
| sealing / late-item | sealing | sealing | Passed |
| collecting / close-empty-window | empty | empty | Passed |
| older notification incarnation | collecting | collecting | Passed |
| future notification incarnation | collecting | collecting | Passed |
| unknown event is inert | collecting | collecting | Passed |
| empty delivery batch | collecting | collecting | Passed |
| N stale deliveries before current delivery | sealing | sealing | Passed |
| trace close-window then seal-success | ready | ready | Passed |
| trace close-window then late-item | sealing | sealing | Passed |
| trace seal-success then show-digest | publishing | publishing | Passed |
| trace show-digest then paint-success | empty | published | Failed |
| trace show-digest then paint-failure | publish-error | publish-error | Passed |
| trace paint-success then expand-digest | empty | expanded | Failed |
| trace paint-failure then retry-show | publishing | publishing | Passed |
| trace retry-show then paint-success | empty | published | Failed |
| trace retry-show then paint-failure | publish-error | publish-error | Passed |
| trace expand-digest then collapse-digest | published | published | Passed |
| trace collapse-digest then expand-digest | expanded | expanded | Passed |
| trace late-item then seal-success | ready | ready | Passed |
| trace late-item then late-item | sealing | sealing | Passed |
| domain state regression 1: members | {'phase': 'sealing', 'value': ['a', 'b']} | {'phase': 'sealing', 'value': ['a', 'b']} | Passed |
| domain state regression 2: shown | {'phase': 'empty', 'value': []} | {'phase': 'empty', 'value': []} | Passed |
| domain state regression 3: sealed | {'phase': 'ready', 'value': ['a', 'b']} | {'phase': 'ready', 'value': ['a', 'b']} | Passed |
| domain state regression 4: members | {'phase': 'sealing', 'value': ['a', 'b']} | {'phase': 'sealing', 'value': ['a', 'b']} | Passed |
| domain state regression 5: next_window | {'phase': 'sealing', 'value': ['c']} | {'phase': 'sealing', 'value': ['c']} | Passed |
| domain state regression 6: shown | {'phase': 'empty', 'value': []} | {'phase': 'published', 'value': ['a']} | Failed |
| domain state regression 7: shown | {'phase': 'empty', 'value': []} | {'phase': 'published', 'value': ['a', 'b']} | Failed |
SHA-256 / 8ed48683d2057d57b4f8cb2e7294547b637ee5200062a785b66846c3fe1708ca
HELD IN THE MEMBER ARCHIVE
The verified repair and its recorded checks are member-only.
This mechanism has 35 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.
Every case sharing this mechanism uses the same contract and the same repair, so this one record is held back for all of them.
Member access is invitation-based. Sign in with your invited account to inspect the repair.
Sign in to the archive ↗Verification & scope
Stipulated single-notification state and policy model only. Event delivery and acknowledgements are explicit test inputs. No DOM, accessibility announcements, live timers, networking, actual rendering, or production-platform conformance is simulated. 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 2026-09-29T14:42:30.906184+00:00.
Case digest / d0765584c55a078af2c3ff169236d432b5951d1aa1d285eee5ec6384e678d5ab