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feat(chat): add conversation history and message actions #20

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c2f3247
feat(ui): add persistent chat conversation history
Dennis-Huangm Mar 5, 2026
8e5452b
fix(chat): avoid stale state when retrying assistant messages
Dennis-Huangm Mar 8, 2026
16b0348
fix(chat): guard conversation state against project switch races
Dennis-Huangm Mar 8, 2026
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3 changes: 3 additions & 0 deletions .gitignore
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Original file line number Diff line number Diff line change
Expand Up @@ -8,3 +8,6 @@ apps/backend/.cache/
data/

AGENTS.md

.playwright-mcp/
.claude/settings.local.json
229 changes: 229 additions & 0 deletions apps/frontend/src/app/App.css
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Original file line number Diff line number Diff line change
Expand Up @@ -3739,3 +3739,232 @@ textarea.input {
.transfer-widget-log > div {
margin-bottom: 2px;
}

/* ── Conversation history ── */

.conv-actions {
display: flex;
gap: 2px;
margin-left: 6px;
}

.conv-btn {
background: none;
border: 1px solid var(--border);
border-radius: 4px;
width: 24px;
height: 24px;
font-size: 13px;
line-height: 1;
cursor: pointer;
color: var(--muted);
display: flex;
align-items: center;
justify-content: center;
transition: background 0.15s, color 0.15s;
}

.conv-btn:hover,
.conv-btn.active {
background: var(--accent-soft);
color: var(--accent);
}

.conversation-title-bar {
padding: 2px 14px 4px;
font-size: 11px;
color: var(--muted);
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
border-bottom: 1px solid var(--border);
background: var(--panel-muted);
}

.history-dropdown {
max-height: 240px;
overflow-y: auto;
border-bottom: 1px solid var(--border);
background: var(--panel);
}

.history-empty {
padding: 16px 14px;
text-align: center;
color: var(--muted);
font-size: 12px;
}

.history-item {
display: flex;
align-items: center;
justify-content: space-between;
padding: 6px 14px;
cursor: pointer;
transition: background 0.12s;
border-bottom: 1px solid rgba(120, 98, 83, 0.08);
}

.history-item:hover {
background: var(--accent-soft);
}

.history-item.active {
background: rgba(180, 74, 47, 0.10);
}

.history-item-info {
display: flex;
flex-direction: column;
gap: 1px;
overflow: hidden;
flex: 1;
min-width: 0;
}

.history-item-title {
font-size: 12px;
color: var(--text);
white-space: nowrap;
overflow: hidden;
text-overflow: ellipsis;
}

.history-item-time {
font-size: 10px;
color: var(--muted);
}

.history-item-delete {
background: none;
border: none;
color: var(--muted);
font-size: 14px;
cursor: pointer;
padding: 0 2px;
margin-left: 6px;
flex-shrink: 0;
opacity: 0;
transition: opacity 0.15s, color 0.15s;
}

.history-item:hover .history-item-delete {
opacity: 1;
}

@media (pointer: coarse) {
.history-item-delete {
opacity: 1;
}
}

.history-item-delete:hover {
color: var(--accent);
}

.history-item-rename {
background: none;
border: none;
color: var(--muted);
font-size: 13px;
cursor: pointer;
padding: 0 2px;
margin-left: 4px;
flex-shrink: 0;
opacity: 0;
transition: opacity 0.15s, color 0.15s;
}

.history-item:hover .history-item-rename {
opacity: 1;
}

.history-item-rename:hover {
color: var(--accent);
}

.conv-rename-input {
width: 100%;
border: 1px solid var(--accent);
border-radius: 3px;
background: var(--paper);
color: var(--text);
font-size: 12px;
padding: 1px 4px;
outline: none;
font-family: inherit;
}

.conversation-title-bar:hover {
background: rgba(120, 98, 83, 0.06);
}

.conversation-title-bar {
display: flex;
align-items: center;
gap: 4px;
cursor: default;
}

.conversation-title-text {
flex: 1;
min-width: 0;
overflow: hidden;
text-overflow: ellipsis;
white-space: nowrap;
}

.conv-title-edit-btn {
background: none;
border: none;
color: var(--muted);
font-size: 12px;
cursor: pointer;
padding: 0 2px;
flex-shrink: 0;
opacity: 0;
transition: opacity 0.15s, color 0.15s;
}

.conversation-title-bar:hover .conv-title-edit-btn {
opacity: 1;
}

.conv-title-edit-btn:hover {
color: var(--accent);
}

/* ── Message action buttons (copy / retry) ── */

.msg-actions {
display: flex;
gap: 4px;
margin-top: 4px;
opacity: 0;
transition: opacity 0.15s;
}

.chat-msg:hover .msg-actions {
opacity: 1;
}

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Copilot AI Mar 7, 2026

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On touch devices, .msg-actions is only shown on .chat-msg:hover, which may make the copy/redo actions effectively unreachable. Consider adding a @media (pointer: coarse) rule similar to .history-item-delete/.history-item-rename to keep .msg-actions visible (or provide an always-visible affordance) on coarse pointers.

Suggested change
/* Ensure message actions are visible on touch / coarse pointer devices */
@media (pointer: coarse) {
.msg-actions {
opacity: 1;
}
}

Copilot uses AI. Check for mistakes.
.msg-action-btn {
background: none;
border: 1px solid var(--border);
border-radius: 4px;
width: 26px;
height: 22px;
font-size: 13px;
line-height: 1;
cursor: pointer;
color: var(--muted);
display: flex;
align-items: center;
justify-content: center;
transition: background 0.15s, color 0.15s;
}

.msg-action-btn:hover {
background: var(--accent-soft);
color: var(--accent);
}
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