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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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8
apps/server/src/schema.sql
View File

@@ -51,7 +51,7 @@ CREATE TABLE IF NOT EXISTS message_parts (
kind text NOT NULL,
payload jsonb NOT NULL,
created_at timestamptz NOT NULL DEFAULT clock_timestamp(),
CONSTRAINT message_parts_kind_chk CHECK (kind IN ('text', 'tool_call', 'tool_result', 'reasoning', 'step_start', 'synthesis')),
CONSTRAINT message_parts_kind_chk CHECK (kind IN ('text', 'tool_call', 'tool_result', 'reasoning', 'step_start', 'synthesis', 'html_artifact')),
CONSTRAINT message_parts_seq_uniq UNIQUE (message_id, sequence)
);
CREATE INDEX IF NOT EXISTS message_parts_msg_seq_idx ON message_parts (message_id, sequence);
@@ -79,6 +79,10 @@ CREATE INDEX IF NOT EXISTS message_parts_hidden_idx
-- 'synthesis'; drop + re-add the constraint with the extended enum. Fresh
-- installs hit the inline constraint above (already updated) and skip this
-- block via the pg_constraint guard.
-- v1.14.x-html-artifact-panes: extend the same constraint with 'html_artifact'.
-- DROP IF EXISTS + DO $$ pg_constraint $$ guard remains idempotent across
-- both v1.13.13 and v1.14.x boots; the IN list below is the union of every
-- kind ever shipped.
ALTER TABLE message_parts DROP CONSTRAINT IF EXISTS message_parts_kind_chk;
DO $$
BEGIN
@@ -87,7 +91,7 @@ BEGIN
) THEN
ALTER TABLE message_parts
ADD CONSTRAINT message_parts_kind_chk
CHECK (kind IN ('text', 'tool_call', 'tool_result', 'reasoning', 'step_start', 'synthesis'));
CHECK (kind IN ('text', 'tool_call', 'tool_result', 'reasoning', 'step_start', 'synthesis', 'html_artifact'));
END IF;
END $$;