The floating AI chat rendered NOTHING for the assistant turn (user bubble +
"thinking" dots showed, but the streamed text and tool-call cards never
appeared) even though the agent ran server-side. The parts DID arrive in
`useChat.messages` — this was purely a render freeze.
Root cause: the MessageItem `React.memo` comparator (#182) decided whether to
re-render by recomputing `messageSignature(prev.message)` vs
`messageSignature(next.message)` inside `arePropsEqual` (plus a
`prev.message === next.message` fast path). But the AI SDK (ai@6 /
@ai-sdk/react@3) streams a turn by MUTATING the same `parts` in place and
handing back a message wrapper that SHARES those mutated parts. So inside the
comparator both `prev.message` and `next.message` already reflect the latest
content — the two signatures are ALWAYS equal — and the memo skipped every
post-mount render. The assistant row therefore froze at its initial empty
(null) render; reasoning-first providers (e.g. z.ai/GLM) start with a
non-visible reasoning part, so the whole answer + tool cards never showed.
Fix: snapshot the signature in the PARENT (MessageList) at render time and pass
it to MessageItem as an immutable `signature` string prop; `arePropsEqual` now
compares that prop. A captured string is immutable, so `prev.signature` holds
the previous render's content and `next.signature` the new content — they differ
as the turn streams in and the row re-renders. Drop the now-incorrect
`prev.message === next.message` fast path (same-ref-but-mutated must still
re-render). MarkdownPart's per-part memo is unaffected (it already keys on the
primitive `text`).
Verified end-to-end against a real OpenAI-compatible provider: the assistant
turn (reasoning + streamed text + tool-call card) now renders live and on
finish. Regression tests added (render + comparator) that fail before / pass
after.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
showTypingIndicator hid the standalone thinking dots for any non-empty
trailing text part, so during the pause after the model finished an
intermediate narration and before its next step (e.g. a tool call) the
UI looked frozen. Suppress the dots only while the text part is still
streaming: a finalized ("done") trailing text part on an in-flight turn
now shows the dots again, matching the function's documented intent.
- message-list: guard the text branch with state !== "done" (AI SDK v6
TextUIPart.state); stateless parts keep their previous behavior
- show-typing-indicator.test: add done -> shown and streaming -> hidden cases
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The live typing placeholder now shows only the bouncing dots; the
"Thinking… · N tokens" line is removed. Clean up the dead plumbing:
- typing-indicator: remove thinkingTokens prop, thinkingLine and the
<Text> line; keep the animated dots and the dimmed name label
- message-list: remove tailThinkingTokens helper, the thinkingTokens
prop pass-through, and the now-unused liveTurnTokens import
- delete tail-thinking-tokens.test.ts (tested the removed helper)
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Tokens were only counted post-hoc (onFinish) and the header badge updated only on
chat open/switch; reasoning wasn't requested or shown. Now a counter ticks LIVE
during generation and surfaces reasoning ("thinking") tokens separately, like
Claude Code's `Thinking… · N tokens`.
Architecture (AI SDK v6): no provider gives exact per-token usage mid-stream, so
the live number is a cheap client estimate (chars/≈4) reconciled to AUTHORITATIVE
provider usage at step boundaries and turn end. The useChat per-delta re-render is
the existing realtime engine.
- server: `chatStreamMetadata` now also forwards usage on `finish-step` + `finish`;
`sendReasoning: true`; persisted `metadata.usage` carries `reasoningTokens`
(normalized from `outputTokenDetails` or the deprecated field).
- client: pure `count-stream-tokens` (estimateTokens / liveTurnTokens, prefers
authoritative usage else estimate); `Thinking… · N tokens` in the typing
indicator; collapsible "Thinking" reasoning block; throttled (~8 Hz) live
turn-token header badge; `reasoningTokens` in types + Markdown export.
Review fixes folded in:
- v6 `finish-step.usage` is PER-STEP, not cumulative — the server now ACCUMULATES
a running sum (new pure `accumulateStepUsage`) and sends the cumulative, which
converges to `finish.totalUsage`, so the live counter never jumps DOWN on a
multi-step agent turn.
- reasoning double-count: the authoritative turn-total is attributed to a block
ONLY for a single-reasoning-part (one-step) turn; multi-step blocks each show
their own estimate (the authoritative total stays in the header).
- no "0" badge flash at turn start (require live > 0, else show context size).
- comment refreshed (finish-step trigger).
Tests: server `accumulateStepUsage` + updated `chatStreamMetadata` (34 in the
suite); client pure-fn tests. Both tsc clean; 162 client ai-chat + the ai-chat
server suite pass.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The standalone "Thinking…" indicator's agent-name label switched owners a couple seconds into a turn: at first TypingIndicator rendered name+dots (4px gap), then once useChat materialized the empty/reasoning-only assistant message the name moved to the empty MessageItem row (16px messageRow margin), pushing the dots ~20px away — a visible layout jump.
Introduce a shared pure helper assistantMessageHasVisibleContent() as the single source of truth mirroring MessageItem's render decisions. MessageItem now returns null for an assistant message with no visible content, and typingIndicatorShowsName keeps the name on the indicator until the assistant row has visible content. Exactly one element owns the name throughout the pre-content gap, so the layout no longer reflows.
- new utils/message-content.ts + unit tests (12 cases)
- message-list.tsx: typingIndicatorShowsName uses the helper
- message-item.tsx: early return null when no visible content
- typing-indicator-shows-name.test.ts: updated expectations
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
While a multi-step agent turn is "thinking between tool steps", the
assistant identity name (e.g. the role name) was rendered twice, stacked:
once by the assistant message row (MessageItem) and once by the standalone
TypingIndicator below it. The indicator's name label only makes sense when
it stands in for a not-yet-started assistant row; between steps the row
above already shows the same name.
Render the indicator's dimmed name label only when it is standalone (no
assistant row at the tail yet); otherwise show just the "Thinking…" dots.
- typing-indicator.tsx: optional showName prop (default true); the name
label renders only when showName !== false
- message-list.tsx: exported typingIndicatorShowsName(messages) helper;
pass showName to the indicator at the render site
- typing-indicator-shows-name.test.ts: unit-cover the four cases
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Replace the AI chat typing indicator text "AI is typing…" with
"Thinking…".
- typing-indicator.tsx: use t("Thinking…") instead of t("AI is typing…")
- en-US: drop the now-redundant "AI is typing…" key (the "Thinking…"
key already existed and was unused)
- ru-RU: rename the key to "Thinking…" with value "Думаю…"
- update related comments in message-list.tsx and the test file
showTypingIndicator treated any tool part in the latest assistant message
as visible content, so the "AI is typing…" dots were suppressed for the
rest of the turn once the first tool call appeared. During the model's
"thinking" pauses after a completed tool call, the chat showed only static
tool cards and no activity.
Inspect the last part of the assistant message instead of any part: hide
the dots only while output is actively rendering (a non-empty streaming
text part, or a tool still in the "running" state — which shows its own
Loader). Finished/errored tools and empty trailing text now keep the dots
visible, so the indicator reappears while the model thinks between steps.
Add tests covering the post-tool thinking gap and the running-tool case.
The typing indicator rendered "<role name> is typing…". Show a generic
"AI is typing…" instead and keep the role/identity name only in the
dimmed interlocutor label above the typing dots.
- typing line now always renders t("AI is typing…")
- add the "AI is typing…" key to en-US and ru-RU locales
- sync stale doc comments that referenced the old text
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The anonymous public-share "Ask AI" chat labeled every assistant turn
with the generic "AI agent" even when an Assistant identity (agent role)
was configured. Surface the configured identity name instead, falling
back to "AI agent" when no identity is set.
- server: AiSettingsService.resolvePublicShareAssistantName resolves the
configured role's name (null when unset/missing/disabled), mirroring
PublicShareChatService.resolveShareRole; ShareController returns it as
aiAssistantName on /shares/page-info (only when the assistant is on).
- client: thread aiAssistantName -> ShareAiWidget -> MessageList ->
MessageItem/TypingIndicator via an optional assistantName prop; the
internal chat omits it and keeps showing "AI agent".
- i18n: add "{{name}} is typing…" (en-US, ru-RU) for the typing line.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The public-share widget was a separate minimal impl: plain-text answer, static
'Thinking…', no markdown, no tool-cards. Now it renders through the internal
chat's debugged presentational layer (MessageList/MessageItem/TypingIndicator/
ToolCallCard), so a share gets the same incremental streaming, animated typing
indicator, markdown, and tool-call cards. The share keeps its anonymous
transport (useChat + DefaultChatTransport '/api/shares/ai/stream',
credentials:'omit').
The shared components were already prop-driven (UIMessage[] + isStreaming) with
no transport/auth coupling; made the new props additive optionals (emptyState,
showCitations, neutralizeInternalLinks) all defaulting to current behavior, so
the internal chat is unchanged.
Security (review-caught): rendering assistant markdown on the ANONYMOUS share
made internal links (/p/{id}, /settings/...) clickable, which the old plain-text
render didn't. renderChatMarkdown gains neutralizeInternalLinks (true only on
the share): a one-shot DOMPurify afterSanitizeAttributes hook (added/removed by
reference around a single sanitize) strips href from internal/relative/non-http(s)
links (rendered inert) and keeps external http(s) links with
rel=noopener noreferrer nofollow target=_blank. Tests cover both the link
neutralization and the absence of any global-hook leak into internal renders.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Unit tests for the safety-critical paths: crypto secret-box (round-trip,
tamper detection, wrong key), the SSRF guard (blocked ranges + DNS-rebinding),
the ai-chat tools service, the page-embedding repo, and the
assistant-parts/serialization helpers. Those server helpers (assistantParts,
rowToUiMessage, serializeSteps) are exported ONLY for the tests — no runtime
change.
Also: keyboard a11y on the chat history header and conversation rows
(role/tabIndex/Enter+Space), and DRY refactors that move shared logic into one
place (isToolPart -> tool-parts util; buildInitialValues in the MCP form).
The behaviour-changing edits that previously rode along in this commit are
split out into the following two commits, per review.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
The transcript force-scrolled to the bottom on every streamed delta because
the auto-scroll effect ran unconditionally whenever the messages array identity
changed. Scrolling up to read earlier messages was impossible — each token
yanked the view back down.
Implement a "stick to bottom" pattern in MessageList:
- track whether the viewport is pinned to the bottom via a scroll listener
(pinnedToBottomRef, BOTTOM_THRESHOLD = 40px);
- only auto-scroll while pinned; a freshly sent user message always re-pins;
- attach the scroll listener via a [hasScrollArea] dependency so a brand-new
empty chat (whose ScrollArea mounts only after the first message) wires it up;
- guard the effect's own scrollTop write (programmaticScrollRef) so it is not
misread as a user scroll.
- openai provider: use .chat() (Chat Completions) instead of the default callable
(Responses API), which gateways reject on multi-turn -> 400.
- updateAiProviderSettings: assemble settings.ai.provider via jsonb_build_object
with ::text-cast bound params + jsonb_typeof self-heal (postgres.js was
double-encoding it into an array; the ::text cast avoids 'could not determine
data type of parameter').
- chat agent: drop the hard maxOutputTokens cap (truncated complex tool calls);
keep a tiny cap only on the test-connection ping.
- testConnection + chat stream: surface the real provider error (statusCode+message)
to logs and the UI instead of generic masks; never log the API key.
- chat UI: typing indicator, incremental streaming render, tool 'running' status, Stop.
Also bundled (prior uncommitted ai-chat work):
- history 'AI agent' provenance badge; vector RAG (pgvector image + page_embeddings
+ AI_QUEUE indexer + space-scoped semanticSearch); external MCP servers backend
(@ai-sdk/mcp client, SSRF IP-pinning, encrypted headers, admin CRUD/Test);
yjs duplicate-instance fix via pnpm patch (single CJS instance server-side).
- Add reversible write tools to the per-user agent toolset (page create/update/
move/soft-delete; comment reply + resolve), exposed under the user's JWT and
enforced by Docmost CASL; no permanent/force delete (D3).
- Non-spoofable agent provenance: sign actor/aiChatId into the access and collab
tokens (TokenService), propagate via jwt.strategy onto the request, and set
pages.last_updated_source/last_updated_ai_chat_id on REST create/update/move and
comments.created_source/resolved_source/ai_chat_id.
- packages/mcp: add an optional getCollabToken provider (content-edit provenance)
and guard against empty tokens; service-account /mcp path unchanged.
Frontend:
- Admin 'AI / Models' settings section: provider/model/embedding/base URL, a
write-only API key field, system prompt, and Test connection.
- AI chat panel (useChat + DefaultChatTransport): conversation list, streamed
messages, tool-call action log and page citations; header entry point gated on
settings.ai.chat.
Compile-verified (server nest build + client tsc/vite); not yet live-tested.
Known gaps: history 'AI agent' badge (C3), vector RAG (D), external MCP (E);
chat tool-card citation links pending a fix.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
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