feat(chat): stop button + cmd/ctrl+K shortcut + IME guard#178
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…uard Three more copilotkit-parity behaviors landed in the input + popup primitives. ## chat-input - **Stop button**: while \`agent.isLoading()\` the send button switches to a square stop button (aria-label="Stop generating"). Click calls \`agent.stop()\` and emits a \`stopped\` output. Adds a \`showStopButton\` input (default true) to opt out. - **Textarea no longer disables during streaming** — copilotkit pattern. Users can keep composing the next prompt while the assistant is responding. - **IME composition guard**: tracks \`compositionstart\`/\`compositionend\` and additionally checks \`event.isComposing\` and the legacy \`event.keyCode === 229\`. Prevents Enter from submitting mid-IME (CJK input methods, dead-key accents, autocorrect popups), which otherwise discards the in-progress character. ## chat-popup - **Cmd/Ctrl + K shortcut** to toggle the popup (configurable via the \`shortcut\` input, set to \`null\` to disable). Mac uses cmd, others use ctrl, detected from \`navigator.platform\`/\`userAgent\`. - **Escape closes** when open (configurable via \`closeOnEscape\`). ## styling - New \`.chat-input__send--stop\` rule: filled dark square button with inverted color, distinct from the disabled-send muted look. Bumps @ngaf/chat 0.0.11 → 0.0.12. Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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Three more copilotkit-parity behaviors
chat-input
chat-popup
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