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fix(ai): roll back failed history deletion - #2841

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fix(ai): roll back failed history deletion#2841
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HandSonic:fix/ai-history-delete-rollback

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@HandSonicHandSonic commented Aug 31, 2026•
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Related issue

N/A - no matching issue was found.

Summary

AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.

Affected surfaces

  • Frontend / Web
  • Backend / API / Storage
  • Database plugin / Driver
  • JCEF / Desktop packaging
  • CI / Build / Release
  • Documentation only

Verification

  • Commands and results:
    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A

Risk and compatibility

  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.

Reviewer map

  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.

Contributor declaration

  • I linked the Issue that defines this change.
  • I tested the affected behavior and reported the actual results above.
  • I did not include credentials, private data, or generated build output.
  • I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.

AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.

@openai0229openai0229 moved this to In Review in Chat2DB CommunityAug 31, 2026
@HandSonic
HandSonicforce-pushed the fix/ai-history-delete-rollback branch from 3455524 to c2cbae9CompareAugust 31, 2026 05:10
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@HandSonic@openai0229
, 'i'); if (__m === '*' || __re.test(location.href)) { // Add copy buttons to all 
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function addCopyButtons() {
document.querySelectorAll('pre code').forEach(function(codeBlock) {
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} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
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try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '
fix(ai): roll back failed history deletion by HandSonic · Pull Request #2841 · OtterMind/Chat2DB · GitHub
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fix(ai): roll back failed history deletion - #2841
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HandSonic:fix/ai-history-delete-rollback
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fix(ai): roll back failed history deletion#2841
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@HandSonic
@HandSonicHandSonic
commented
Aug 31, 2026•

edited

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Contributor
Related issue
N/A - no matching issue was found.
Summary
AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.
Affected surfaces
  •  Frontend / Web
  •  Backend / API / Storage
  •  Database plugin / Driver
  •  JCEF / Desktop packaging
  •  CI / Build / Release
  •  Documentation only
Verification
  • Commands and results:

    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A
Risk and compatibility
  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.
Reviewer map
  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.
Contributor declaration
  •  I linked the Issue that defines this change.
  •  I tested the affected behavior and reported the actual results above.
  •  I did not include credentials, private data, or generated build output.
  •  I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.
AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.
@openai0229openai0229
moved this to In Review
in Chat2DB CommunityAug 31, 2026
@HandSonic
HandSonicforce-pushed
the
fix/ai-history-delete-rollback
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c2cbae9CompareAugust 31, 2026 05:10
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Force GitHub README to respect dark mode
(function() {
var style = document.createElement('style');
style.textContent = '
.markdown-body {
color-scheme: dark light;
}
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(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(ai): roll back failed history deletion by HandSonic · Pull Request #2841 · OtterMind/Chat2DB · GitHub
Skip to content
fix(ai): roll back failed history deletion - #2841
Open
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Open
fix(ai): roll back failed history deletion#2841
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
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@HandSonic
@HandSonicHandSonic
commented
Aug 31, 2026•

edited

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Contributor
Related issue
N/A - no matching issue was found.
Summary
AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.
Affected surfaces
  •  Frontend / Web
  •  Backend / API / Storage
  •  Database plugin / Driver
  •  JCEF / Desktop packaging
  •  CI / Build / Release
  •  Documentation only
Verification
  • Commands and results:

    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A
Risk and compatibility
  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.
Reviewer map
  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.
Contributor declaration
  •  I linked the Issue that defines this change.
  •  I tested the affected behavior and reported the actual results above.
  •  I did not include credentials, private data, or generated build output.
  •  I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.
AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.
@openai0229openai0229
moved this to In Review
in Chat2DB CommunityAug 31, 2026
@HandSonic
HandSonicforce-pushed
the
fix/ai-history-delete-rollback
branch
from
3455524 to
c2cbae9CompareAugust 31, 2026 05:10
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@auengerauengerAwaiting requested review from auengerauenger is a code owner
@openai0229openai0229Awaiting requested review from openai0229openai0229 is a code owner

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2 participants

@HandSonic@openai0229

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Highlight search terms from Google/DuckDuckGo/Bing referrer
(function() {
var ref = document.referrer;
var terms = [];
if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {
var url = new URL(ref);
var q = url.searchParams.get('q') || url.searchParams.get('p');
if (q) {
terms = q.split(/\s+/).filter(function(t) { return t.length > 2; });
}
}
if (terms.length === 0) return;
var style = document.createElement('style');
style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';
document.head.appendChild(style);
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if (regex.test(text)) {
found = true;
var frag = document.createDocumentFragment();
var parts = text.split(regex);
parts.forEach(function(part, i) {
if (i % 2 === 0) {
frag.appendChild(document.createTextNode(part));
} else {
var span = document.createElement('span');
span.className = 'userscript-highlight';
span.textContent = part;
frag.appendChild(span);
}
});
node.parentNode.replaceChild(frag, node);
}
});
} else if (node.nodeType === 1 && node.childNodes) { // element
var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];
if (!skipTags.includes(node.tagName)) {
Array.from(node.childNodes).forEach(highlight);
}
}
}
highlight(document.body);
// Re-highlight on dynamic content
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1 || node.nodeType === 3) highlight(node);
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});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(ai): roll back failed history deletion by HandSonic · Pull Request #2841 · OtterMind/Chat2DB · GitHub
Skip to content
fix(ai): roll back failed history deletion - #2841
Open
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Open
fix(ai): roll back failed history deletion#2841
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Conversation
@HandSonic
@HandSonicHandSonic
commented
Aug 31, 2026•

edited

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Contributor
Related issue
N/A - no matching issue was found.
Summary
AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.
Affected surfaces
  •  Frontend / Web
  •  Backend / API / Storage
  •  Database plugin / Driver
  •  JCEF / Desktop packaging
  •  CI / Build / Release
  •  Documentation only
Verification
  • Commands and results:

    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A
Risk and compatibility
  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.
Reviewer map
  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.
Contributor declaration
  •  I linked the Issue that defines this change.
  •  I tested the affected behavior and reported the actual results above.
  •  I did not include credentials, private data, or generated build output.
  •  I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.
AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.
@openai0229openai0229
moved this to In Review
in Chat2DB CommunityAug 31, 2026
@HandSonic
HandSonicforce-pushed
the
fix/ai-history-delete-rollback
branch
from
3455524 to
c2cbae9CompareAugust 31, 2026 05:10
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@auengerauengerAwaiting requested review from auengerauenger is a code owner
@openai0229openai0229Awaiting requested review from openai0229openai0229 is a code owner

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2 participants

@HandSonic@openai0229

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Strip utm_, fbclid, gclid, etc. from all links on page
(function() {
var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',
'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',
'ref', 'ref_src', 'source', 'medium', 'campaign'];
function cleanUrl(url) {
try {
var u = new URL(url, window.location.origin);
var changed = false;
trackingParams.forEach(function(p) {
if (u.searchParams.has(p)) {
u.searchParams.delete(p);
changed = true;
}
});
return changed ? u.toString() : url;
} catch (e) {
return url;
}
}
function cleanLinks() {
document.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
cleanLinks();
var observer = new MutationObserver(function(mutations) {
mutations.forEach(function(m) {
m.addedNodes.forEach(function(node) {
if (node.nodeType === 1) {
if (node.tagName === 'A') cleanLinks();
node.querySelectorAll('a[href]').forEach(function(a) {
var clean = cleanUrl(a.href);
if (clean !== a.href) a.href = clean;
});
}
});
});
});
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '
fix(ai): roll back failed history deletion by HandSonic · Pull Request #2841 · OtterMind/Chat2DB · GitHub
Skip to content
fix(ai): roll back failed history deletion - #2841
Open
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Open
fix(ai): roll back failed history deletion#2841
HandSonic wants to merge 1 commit into
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HandSonic:fix/ai-history-delete-rollback
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@HandSonic
@HandSonicHandSonic
commented
Aug 31, 2026•

edited

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Contributor
Related issue
N/A - no matching issue was found.
Summary
AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.
Affected surfaces
  •  Frontend / Web
  •  Backend / API / Storage
  •  Database plugin / Driver
  •  JCEF / Desktop packaging
  •  CI / Build / Release
  •  Documentation only
Verification
  • Commands and results:

    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A
Risk and compatibility
  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.
Reviewer map
  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.
Contributor declaration
  •  I linked the Issue that defines this change.
  •  I tested the affected behavior and reported the actual results above.
  •  I did not include credentials, private data, or generated build output.
  •  I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.
AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.
@openai0229openai0229
moved this to In Review
in Chat2DB CommunityAug 31, 2026
@HandSonic
HandSonicforce-pushed
the
fix/ai-history-delete-rollback
branch
from
3455524 to
c2cbae9CompareAugust 31, 2026 05:10
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@auengerauengerAwaiting requested review from auengerauenger is a code owner
@openai0229openai0229Awaiting requested review from openai0229openai0229 is a code owner

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2 participants

@HandSonic@openai0229

, 'i');
if (__m === '*' || __re.test(location.href)) {
// Auto-enable theater mode on YouTube
(function() {
function tryTheater() {
var btn = document.querySelector('button[aria-label="Theater mode"], ytd-player #player button[title="Theater mode"]');
if (btn && !btn.classList.contains('activated')) {
btn.click();
}
}
// Try immediately
tryTheater();
// Try after navigation (SPA)
var lastUrl = location.href;
setInterval(function() {
if (location.href !== lastUrl) {
lastUrl = location.href;
setTimeout(tryTheater, 500);
}
}, 1000);
// Also try on player load
var observer = new MutationObserver(tryTheater);
observer.observe(document.body, { childList: true, subtree: true });
})();
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(ai): roll back failed history deletion by HandSonic · Pull Request #2841 · OtterMind/Chat2DB · GitHub
Skip to content
fix(ai): roll back failed history deletion - #2841
Open
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Open
fix(ai): roll back failed history deletion#2841
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Conversation
@HandSonic
@HandSonicHandSonic
commented
Aug 31, 2026•

edited

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Contributor
Related issue
N/A - no matching issue was found.
Summary
AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.
Affected surfaces
  •  Frontend / Web
  •  Backend / API / Storage
  •  Database plugin / Driver
  •  JCEF / Desktop packaging
  •  CI / Build / Release
  •  Documentation only
Verification
  • Commands and results:

    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A
Risk and compatibility
  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.
Reviewer map
  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.
Contributor declaration
  •  I linked the Issue that defines this change.
  •  I tested the affected behavior and reported the actual results above.
  •  I did not include credentials, private data, or generated build output.
  •  I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.
AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.
@openai0229openai0229
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Remove or un-stick sticky/fixed headers that block content
(function() {
function unstick() {
document.querySelectorAll('header, nav, [role="banner"], .header, .navbar, .sticky, .fixed-top, [style*="position: fixed"], [style*="position:sticky"]').forEach(function(el) {
if (el.style.position === 'fixed' || el.style.position === 'sticky' || getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {
el.style.position = 'static';
el.style.top = 'auto';
el.style.zIndex = 'auto';
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unstick();
var observer = new MutationObserver(unstick);
observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });
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}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '
fix(ai): roll back failed history deletion by HandSonic · Pull Request #2841 · OtterMind/Chat2DB · GitHub
Skip to content
fix(ai): roll back failed history deletion - #2841
Open
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Open
fix(ai): roll back failed history deletion#2841
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
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@HandSonic
@HandSonicHandSonic
commented
Aug 31, 2026•

edited

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Related issue
N/A - no matching issue was found.
Summary
AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.
Affected surfaces
  •  Frontend / Web
  •  Backend / API / Storage
  •  Database plugin / Driver
  •  JCEF / Desktop packaging
  •  CI / Build / Release
  •  Documentation only
Verification
  • Commands and results:

    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A
Risk and compatibility
  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.
Reviewer map
  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.
Contributor declaration
  •  I linked the Issue that defines this change.
  •  I tested the affected behavior and reported the actual results above.
  •  I did not include credentials, private data, or generated build output.
  •  I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.
AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.
@openai0229openai0229
moved this to In Review
in Chat2DB CommunityAug 31, 2026
@HandSonic
HandSonicforce-pushed
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c2cbae9CompareAugust 31, 2026 05:10
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, 'i');
if (__m === '*' || __re.test(location.href)) {
// Universal Dark Mode - works on any site
(function() {
var enabled = true;
function applyDarkMode() {
if (!enabled) return;
// Create style element if it doesn't exist
var style = document.getElementById('universal-dark-mode-style');
if (!style) {
style = document.createElement('style');
style.id = 'universal-dark-mode-style';
document.head.appendChild(style);
}
// Dark mode CSS - inverts colors but preserves images/video
style.textContent = '
/* Invert everything except media */
html {
filter: invert(1) hue-rotate(180deg) !important;
background: #1a1a2e !important;
}
/* Restore images, videos, iframes, canvas */
img, video, iframe, canvas, svg, picture, [style*="background-image"] {
filter: invert(1) hue-rotate(180deg) !important;
}
/* Preserve specific elements that should not be inverted */
.no-dark-mode, .no-dark-mode *,
[data-theme="light"], [data-theme="light"],
.ace_editor, .ace_editor *,
.CodeMirror, .CodeMirror *,
.monaco-editor, .monaco-editor *,
.markdown-body pre, .markdown-body pre *,
.highlight, .highlight *,
pre code, pre code * {
filter: none !important;
}
/* Fix common UI elements */
.modal, .popup, .dropdown-menu, .tooltip, .popover {
filter: invert(1) hue-rotate(180deg) !important;
background: #2d2d44 !important;
border-color: #444 !important;
}
/* Scrollbars */
::-webkit-scrollbar { background: #1a1a2e !important; }
::-webkit-scrollbar-thumb { background: #444 !important; }
::-webkit-scrollbar-thumb:hover { background: #555 !important; }
/* Selection */
::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }
';
}
function removeDarkMode() {
var style = document.getElementById('universal-dark-mode-style');
if (style) style.remove();
}
// Toggle with Alt+Shift+D
document.addEventListener('keydown', function(e) {
if (e.altKey && e.shiftKey && e.key === 'D') {
e.preventDefault();
enabled = !enabled;
if (enabled) {
applyDarkMode();
console.log('[Universal Dark Mode] Enabled');
} else {
removeDarkMode();
console.log('[Universal Dark Mode] Disabled');
}
}
});
// Apply on load
applyDarkMode();
// Re-apply on dynamic content
var observer = new MutationObserver(function(mutations) {
if (enabled && !document.getElementById('universal-dark-mode-style')) {
applyDarkMode();
}
});
observer.observe(document.head, { childList: true });
console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');
})();
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();
fix(ai): roll back failed history deletion by HandSonic · Pull Request #2841 · OtterMind/Chat2DB · GitHub
Skip to content
fix(ai): roll back failed history deletion - #2841
Open
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Open
fix(ai): roll back failed history deletion#2841
HandSonic wants to merge 1 commit into
OtterMind:mainfrom 
HandSonic:fix/ai-history-delete-rollback
Conversation
@HandSonic
@HandSonicHandSonic
commented
Aug 31, 2026•

edited

Loading

Copy link


Copy Markdown

Contributor
Related issue
N/A - no matching issue was found.
Summary
AI history deletion persisted removal from the owner session index before deleting the message file. If message deletion failed, the owner record was lost; a retry then saw no owned session and silently left the orphaned message path forever. This change restores the original session snapshot on deletion failure and preserves rollback failures as suppressed diagnostics.
Affected surfaces
  •  Frontend / Web
  •  Backend / API / Storage
  •  Database plugin / Driver
  •  JCEF / Desktop packaging
  •  CI / Build / Release
  •  Documentation only
Verification
  • Commands and results:

    • Red tests reproduced lost ownership and missing rollback diagnostics.
    • Focused delete rollback tests: 3 passed.
    • Domain-core reactor: 223 tests passed.
    • Backend package: succeeded.
    • Fork code and CodeQL checks: passed.
    • Merge-tree with atomic history writes: passed.
  • Manual verification: N/A - a non-empty directory deterministically forces message-path deletion failure and retry.
  • UI evidence: N/A
Risk and compatibility
  • Public API or stored data: Existing history JSON formats are unchanged.
  • Database or driver compatibility: N/A.
  • Network, privacy, or security: Non-owner deletion remains unable to touch another user’s message path.
  • Community / Local / Pro boundary: Shared Community AI history service.
  • Backward compatibility: Successful and non-owner deletes retain existing behavior; failed owner deletes become retryable.
Reviewer map
  • Start here: AiChatHistoryServiceImpl.deleteSessionLocal and AiChatHistoryDeleteRollbackTest.
  • Failure condition: a message-delete failure removes session ownership or hides rollback diagnostics.
  • Rollback or disable path: Revert commit c2cbae9b48ec1ce4dc14a82bdcba2dc7dbea53bf; no migration is required.
Contributor declaration
  •  I linked the Issue that defines this change.
  •  I tested the affected behavior and reported the actual results above.
  •  I did not include credentials, private data, or generated build output.
  •  I disclosed substantial AI assistance below, or this PR contains no substantial AI-generated code.
AI assistance: OpenAI Codex assisted with diagnosis, implementation, deterministic tests, verification, and adversarial review.
@openai0229openai0229
moved this to In Review
in Chat2DB CommunityAug 31, 2026
@HandSonic
HandSonicforce-pushed
the
fix/ai-history-delete-rollback
branch
from
3455524 to
c2cbae9CompareAugust 31, 2026 05:10
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Reviewers

@auengerauengerAwaiting requested review from auengerauenger is a code owner
@openai0229openai0229Awaiting requested review from openai0229openai0229 is a code owner

At least 1 approving review is required to merge this pull request.


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Status: In Review


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2 participants

@HandSonic@openai0229