feat(examples-chat): derive thread titles from first user message#242
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Adds a _maybe_write_thread_title side effect to the generate node: on the first user message in a thread (metadata.title absent), the node writes a 50-char slice into LangGraph thread metadata via the official SDK client. Idempotent and error-swallowing so titles never block a run. The threads.service.ts in the demo already prefers metadata.title over the truncated-id fallback, so threads now render with real labels in the drawer after one round-trip per thread. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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May 11, 2026
…ers (#243) * feat(chat): mount chat-timeline-slider inside chat-debug Demotes the slider from a primary nav surface to an advanced affordance inside the Debug overlay. The two UX patterns — inline gutter markers (new) + panel slider (legacy) — now ship side-by-side as a library-consumer reference. * refactor(examples-chat): remove Phase 6/7 fixed side panels Drops the timeline-panel and threads-panel side panels along with their palette toggles, persistence keys, and responsive overrides from PR #240. The replacement threads-drawer + inline checkpoint markers land in the next commit. The legacy timeline slider is still reachable via the Debug overlay. * feat(examples-chat): nav v2 — header + threads drawer + inline checkpoint markers Replaces the Phase 6/7 fixed side panels (removed in the previous commit) with a left-edge slide-out threads drawer toggled from a permanent hamburger top-left, plus inline checkpoint markers in each assistant turn's gutter. Drawer uses push mode at >=1024px (chat main reflows via padding-left) and overlay-with-scrim below. agent.messageCheckpoints() from the LangGraph adapter pairs each AIMessage id with its newest containing checkpoint; chat-message [checkpointId] picks up the right id and bubbles Rewind/Fork up to the existing onTimelineReplay / onTimelineFork handlers. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com> * feat(chat,examples-chat): forward replay/fork outputs through chat-popup + chat-sidebar Completes cross-mode wiring for the nav v2 redesign. Both wrapper compositions (chat-popup, chat-sidebar) now expose replayRequested + forkRequested outputs that forward from their internal <chat> instance, and the demo-shell's popup and sidebar mode routes bind those outputs to the same onTimelineReplay / onTimelineFork handlers /embed uses. Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com> * fix(examples-chat): refresh threads list after run completes The backend writes metadata.title on the first user message via _maybe_write_thread_title (PR #242). Without this refresh, the drawer keeps showing 'Thread <id-slice>' for the active thread until the user manually switches threads. New effect listens for status transitioning out of 'running' and re-fetches the threads list so the title lands in the drawer as soon as the run ends. * chore: regenerate api-docs for nav v2 demo wiring * fix(examples-chat,chat): drawer + layout fixes from live smoke Three issues uncovered by live smoke against the dev server: 1. Drawer animation: the `[data-open] transform: translateX(0)` CSS rule unreliable across HMR + change detection — switch the chat-thread-drawer composition to a direct `[style.left.px]` binding (0 when open, -320 when closed) with `transition: left 200ms ease`. Drops the CSS attribute selector approach. 2. Redundant header: the demo-shell wrapped both the hamburger and the existing floating-fixed `<app-control-palette>` in a new top header strip, which double-anchored the palette and visually crowded the top. Drop the header; pin the hamburger as its own fixed top-left floating button so the palette keeps its original top-right floating-corner placement. 3. Hamburger sizing: scaled up the default size (32 → 36) to match the palette's visual weight and added a subtle drop shadow so it reads as a floating control like the palette. --------- Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>
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May 12, 2026
…rk (#271) Brings the canonical smoke checklist current with 29 PRs that landed between Phase 7 (#239) and today without checklist updates. Specifically: Updated sections: - chat-debug devtools — replaced bottom-drawer model with floating launcher + status pill + switch (PRs #249, #251) - Control palette — palette v2 (status pill, shadcn-styled panel, PR #244) - Generative UI / A2UI surfaces — single-bubble invariant (PR #255), parent-emits-envelopes architecture (PR #259), wrapped-content + tool_calls coexistence (PR #255), envelope reorder - Server-side wire format — tool_calls preserved on the final AI - Replaced 'Multi-thread' section with 'Sidenav (thread management)' reflecting the permanent semantic <nav> + Active/Archived sections (PR #253) and removing the old palette-toggled drawer model Added sections: - Cmd+K history search — palette open/search/select/close, archived result subtitle, keyboard navigation (PR #253) - Per-row thread actions — kebab menu order per state (active, pinned, archived), rename + pin/unpin + archive/unarchive + delete flows (PRs #258, #260, #267) - Thread titles — first-user-message derivation, idempotent writes, manual rename precedence (PR #242) - Progressive A2UI streaming — per-component fallback transition observable during streaming window (PRs #252, #261, #262, #268, #269) - Inline checkpoint markers — render between messages during multi-step runs (PR #243) - Responsive sidenav — viewport breakpoints, auto-collapse behavior (PR #240) Total: ~58 new check items across 6 new sections, plus rewrites to 5 existing sections. Original 333-line checklist → 391 lines / 237 check items.
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Summary
_maybe_write_thread_titleto the Python graph. On the first user message in a thread, writes a derived 50-char title into thread metadata via the LangGraph SDK.Pairs with PR #241 (lib primitives) and the upcoming PR 3 (demo wiring) for the nav v2 design.
Test plan
pytest tests/test_graph_smoke.py::TestSliceTitlegreen (6 tests)pytest tests/green (existing smokes still pass — 18 total)🤖 Generated with Claude Code