Benjamin Taylor bbe23e604e fix(threads): skip /connect for absent threads, stabilize switch UX (ENT-314) ...

- Skip copilotkit.connectAgent when CopilotChat lacks a caller-supplied
  threadId — a locally-minted UUID has no backend record, so /connect
  would always 404 on the intelligence platform.
- Suppress the welcome screen while a connect is in flight and
  unconditionally when the caller has supplied a threadId
  (hasExplicitThreadId). Prevents the "How can I help you today?"
  flash on thread switch.
- Gate suggestions on !isConnecting && !isRunning to avoid painting
  them against a mid-replay message tree.
- Defer the isConnecting release by one animation frame so trailing
  bootstrap renders commit before the flag flips.
- Reserve room for the "Powered by CopilotKit" license badge via a
  new --copilotkit-license-banner-offset CSS var published by the
  banner on mount; chat input consumes it only when bottom-anchored.
- Sort and display threads by lastRunAt (fallback to updatedAt →
  createdAt) so metadata-only actions like archive/rename don't
  reshuffle the list.
- useThreads waits for runtimeConnectionStatus === Connected before
  dispatching the store context, eliminating the speculative /threads
  fetch that fired before /info returned wsUrl.

Threads example polish: restore button + tooltips on
archive/restore/delete, segmented Active/All filter, graceful error
state, skeleton rows on initial load, stable scrollbar gutter,
pre-paint dark-mode class, logo position stable across app/chat
modes, drop dynamic-import drawer wrapper that caused null first
paint, archived-row dimming via child colors instead of opacity.

Tests:
- CopilotChat.absentThreadConnect: connect is skipped without a
  threadId, fires when supplied via prop or config.
- CopilotChatView.connectingGate: isConnecting suppresses welcome;
  hasExplicitThreadId suppresses welcome on empty chat.
- threads (core): lastRunAt sort fallback ordering.
- use-threads: Connecting-state gate defers /threads until Connected.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

2026-04-22 09:42:34 -05:00

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