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v1.13.19-html-artifact-panes: pane-based artifact viewer with on-request HTML

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Every assistant message gets an "Open in pane" affordance that opens the
message in the workspace splitter — Markdown pane (Copy + Download .md) by
default; HTML pane (Download .html only) when the model emits a self-contained
<!DOCTYPE html> or fenced ```html artifact. BOOCHAT.md rule keeps Markdown
default at every length; HTML opt-in on explicit user request.

Backend: services/artifacts.ts (slug derivation + write helpers with
symlink-escape guard via realpath-after-mkdir), routes/artifacts.ts (POST
download + GET stream with nosniff + CSP sandbox defense-in-depth), HTML
detection in finalizeCompletion writing a new message_parts.kind='html_artifact'
row (schema CHECK extended via v1.13.13 pattern), graceful 1MB cap via the
pure decideHtmlArtifactWrite helper. PartKind union extended.

Frontend: MarkdownRenderer.tsx extracted from MessageBubble's inline
MarkdownBody for reuse; MarkdownArtifactPane.tsx + HtmlArtifactPane.tsx with
loading/error states; pane state is reference-only ({chat_id, message_id,
title}) — content fetched on mount to keep workspace_panes jsonb small and
avoid 1MB blobs riding session_workspace_updated frames. iframe sandbox
locked to allow-scripts allow-clipboard-write allow-downloads with no
allow-same-origin, srcDoc not src. openInPane discriminates 404 (expected
fallback) from real errors (toast + bail). PanelRightOpen icon button with
mobile 44px tap-target.

31 new server unit tests including a real-symlink filesystem case; 332/332
server tests passing, tsc clean both sides, pnpm -C apps/web build green.
Smoke deferred to first deploy.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
This commit is contained in:
indifferentketchup
2026-05-23 12:43:13 +00:00
parent 1a889dcde3
commit ad45b28250
24 changed files with 1864 additions and 195 deletions
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24
apps/web/src/hooks/sessionEvents.ts
View File

@@ -2,7 +2,14 @@
// across hooks (e.g. AI rename arriving via WS in the session view needs to
// also refresh the sidebar's session list).
import type { Chat, ErrorReason, Project, Session } from '@/api/types';
import type {
Chat,
ErrorReason,
HtmlArtifactState,
MarkdownArtifactState,
Project,
Session,
} from '@/api/types';
import type { Attachment } from '@/lib/attachments';
export interface SessionRenamedEvent {
@@ -68,6 +75,19 @@ export interface OpenChatInActivePaneEvent {
chat_id: string;
}
// v1.14.x-html-artifact-panes: ActionRow's "Open in pane" button emits one of
// these; useWorkspacePanes subscribes and inserts the corresponding artifact
// pane (or focuses an existing one keyed by message_id).
export interface OpenMarkdownArtifactPaneEvent {
type: 'open_markdown_artifact_pane';
state: MarkdownArtifactState;
}
export interface OpenHtmlArtifactPaneEvent {
type: 'open_html_artifact_pane';
state: HtmlArtifactState;
}
// Client-side event fired by the sidebar Settings button when a session is
// currently mounted. Session.tsx subscribes and calls
// panesHook.toggleSettingsPane() (open on first click, close on second).
@@ -154,6 +174,8 @@ export type SessionEvent =
| OpenFileInBrowserEvent
| AttachChatFileEvent
| OpenChatInActivePaneEvent
| OpenMarkdownArtifactPaneEvent
| OpenHtmlArtifactPaneEvent
| OpenSettingsPaneEvent
| SessionArchivedEvent
| ChatCreatedEvent