feat(ui): add clear action to prompt input

packages/ui/src/components/prompt-input.tsx

@@ -1,5 +1,5 @@
 import { Suspense, createEffect, createSignal, lazy, on, onCleanup, Show } from "solid-js"
-import { ArrowBigUp, ArrowBigDown, Loader2, Mic } from "lucide-solid"
+import { ArrowBigUp, ArrowBigDown, Loader2, Mic, X } from "lucide-solid"
 import ExpandButton from "./expand-button"
 import { clearAttachments, removeAttachment } from "../stores/attachments"
 import { resolvePastedPlaceholders } from "../lib/prompt-placeholders"
@@ -351,6 +351,19 @@ export default function PromptInput(props: PromptInputProps) {
     textareaRef?.focus()
   }
 
+  function handleClearPrompt() {
+    clearPrompt()
+    clearHistoryDraft()
+    resetHistoryNavigation()
+    setShowPicker(false)
+    setPickerMode("mention")
+    setAtPosition(null)
+    setSearchQuery("")
+    setIgnoredAtPositions(new Set<number>())
+    syncAttachmentCounters("")
+    textareaRef?.focus()
+  }
+
   function insertBlockContent(block: string) {
     const textarea = textareaRef
     const current = prompt()
@@ -422,6 +435,8 @@ export default function PromptInput(props: PromptInputProps) {
     return hasText || attachments().length > 0
   }
 
+  const canClearPrompt = () => prompt().length > 0
+
   const shellHint = () =>
     mode() === "shell"
       ? { key: "Esc", text: t("promptInput.hints.shell.exit") }
@@ -543,7 +558,7 @@ export default function PromptInput(props: PromptInputProps) {
                 autocomplete="off"
               />
               <div class="prompt-nav-buttons">
-                <div class="prompt-nav-top-row">
+                <div class="prompt-nav-column prompt-nav-column-left">
                   <Show when={showVoiceInput()}>
                     <button
                       type="button"
@@ -586,43 +601,55 @@ export default function PromptInput(props: PromptInputProps) {
                       </Show>
                     </button>
                   </Show>
+                  <button
+                    type="button"
+                    class="prompt-clear-button"
+                    onClick={handleClearPrompt}
+                    disabled={!canClearPrompt()}
+                    aria-label={t("promptInput.clear.ariaLabel")}
+                    title={t("promptInput.clear.title")}
+                  >
+                    <X class="h-4 w-4" aria-hidden="true" />
+                  </button>
+                </div>
+                <div class="prompt-nav-column prompt-nav-column-right">
                   <ExpandButton
                     expandState={expandState}
                     onToggleExpand={handleExpandToggle}
                   />
+                  <Show when={hasHistory()}>
+                    <button
+                      type="button"
+                      class="prompt-history-button"
+                      onClick={() =>
+                        selectPreviousHistory({
+                          force: true,
+                          isPickerOpen: showPicker(),
+                          getTextarea: () => textareaRef,
+                        })
+                      }
+                      disabled={!canHistoryGoPrevious()}
+                      aria-label={t("promptInput.history.previousAriaLabel")}
+                    >
+                      <ArrowBigUp class="h-5 w-5" aria-hidden="true" />
+                    </button>
+                    <button
+                      type="button"
+                      class="prompt-history-button"
+                      onClick={() =>
+                        selectNextHistory({
+                          force: true,
+                          isPickerOpen: showPicker(),
+                          getTextarea: () => textareaRef,
+                        })
+                      }
+                      disabled={!canHistoryGoNext()}
+                      aria-label={t("promptInput.history.nextAriaLabel")}
+                    >
+                      <ArrowBigDown class="h-5 w-5" aria-hidden="true" />
+                    </button>
+                  </Show>
                 </div>
-                <Show when={hasHistory()}>
-                  <button
-                    type="button"
-                    class="prompt-history-button"
-                    onClick={() =>
-                      selectPreviousHistory({
-                        force: true,
-                        isPickerOpen: showPicker(),
-                        getTextarea: () => textareaRef,
-                      })
-                    }
-                    disabled={!canHistoryGoPrevious()}
-                    aria-label={t("promptInput.history.previousAriaLabel")}
-                  >
-                    <ArrowBigUp class="h-5 w-5" aria-hidden="true" />
-                  </button>
-                  <button
-                    type="button"
-                    class="prompt-history-button"
-                    onClick={() =>
-                      selectNextHistory({
-                        force: true,
-                        isPickerOpen: showPicker(),
-                        getTextarea: () => textareaRef,
-                      })
-                    }
-                    disabled={!canHistoryGoNext()}
-                    aria-label={t("promptInput.history.nextAriaLabel")}
-                  >
-                    <ArrowBigDown class="h-5 w-5" aria-hidden="true" />
-                  </button>
-                </Show>
               </div>
               <Show when={shouldShowOverlay()}>
                 <div class={`prompt-input-overlay keyboard-hints ${mode() === "shell" ? "shell-mode" : ""}`}>

packages/ui/src/lib/i18n/messages/en/messaging.ts

@@ -142,6 +142,8 @@ export const messagingMessages = {
   "promptInput.overlay.againToAbort": "again to abort session",
   "promptInput.stopSession.ariaLabel": "Stop session",
   "promptInput.stopSession.title": "Stop session",
+  "promptInput.clear.ariaLabel": "Clear prompt text",
+  "promptInput.clear.title": "Clear prompt text",
   "promptInput.send.ariaLabel": "Send message",
   "promptInput.send.errorFallback": "Failed to send message",
   "promptInput.send.errorTitle": "Send failed",

packages/ui/src/lib/i18n/messages/es/messaging.ts

@@ -144,6 +144,8 @@ export const messagingMessages = {
   "promptInput.overlay.againToAbort": "otra vez para abortar la sesión",
   "promptInput.stopSession.ariaLabel": "Detener sesión",
   "promptInput.stopSession.title": "Detener sesión",
+  "promptInput.clear.ariaLabel": "Borrar el texto del prompt",
+  "promptInput.clear.title": "Borrar el texto del prompt",
   "promptInput.send.ariaLabel": "Enviar mensaje",
   "promptInput.send.errorFallback": "No se pudo enviar el mensaje",
   "promptInput.send.errorTitle": "Error al enviar",

packages/ui/src/lib/i18n/messages/fr/messaging.ts

@@ -144,6 +144,8 @@ export const messagingMessages = {
   "promptInput.overlay.againToAbort": "à nouveau pour interrompre la session",
   "promptInput.stopSession.ariaLabel": "Arrêter la session",
   "promptInput.stopSession.title": "Arrêter la session",
+  "promptInput.clear.ariaLabel": "Effacer le texte du prompt",
+  "promptInput.clear.title": "Effacer le texte du prompt",
   "promptInput.send.ariaLabel": "Envoyer le message",
   "promptInput.send.errorFallback": "Impossible d'envoyer le message",
   "promptInput.send.errorTitle": "Échec de l'envoi",

packages/ui/src/lib/i18n/messages/he/messaging.ts

@@ -142,6 +142,8 @@ export const messagingMessages = {
   "promptInput.overlay.againToAbort": "שוב כדי לבטל את הסשן",
   "promptInput.stopSession.ariaLabel": "עצור סשן",
   "promptInput.stopSession.title": "עצור סשן",
+  "promptInput.clear.ariaLabel": "נקה את טקסט הפרומפט",
+  "promptInput.clear.title": "נקה את טקסט הפרומפט",
   "promptInput.send.ariaLabel": "שלח הודעה",
   "promptInput.send.errorFallback": "שליחת ההודעה נכשלה",
   "promptInput.send.errorTitle": "השליחה נכשלה",

packages/ui/src/lib/i18n/messages/ja/messaging.ts

@@ -144,6 +144,8 @@ export const messagingMessages = {
   "promptInput.overlay.againToAbort": "もう一度押すとセッションを中断",
   "promptInput.stopSession.ariaLabel": "セッションを停止",
   "promptInput.stopSession.title": "セッションを停止",
+  "promptInput.clear.ariaLabel": "プロンプトのテキストをクリア",
+  "promptInput.clear.title": "プロンプトのテキストをクリア",
   "promptInput.send.ariaLabel": "メッセージを送信",
   "promptInput.send.errorFallback": "メッセージの送信に失敗しました",
   "promptInput.send.errorTitle": "送信に失敗",

packages/ui/src/lib/i18n/messages/ru/messaging.ts

@@ -144,6 +144,8 @@ export const messagingMessages = {
   "promptInput.overlay.againToAbort": "еще раз, чтобы прервать сессию",
   "promptInput.stopSession.ariaLabel": "Остановить сессию",
   "promptInput.stopSession.title": "Остановить сессию",
+  "promptInput.clear.ariaLabel": "Очистить текст prompt",
+  "promptInput.clear.title": "Очистить текст prompt",
   "promptInput.send.ariaLabel": "Отправить сообщение",
   "promptInput.send.errorFallback": "Не удалось отправить сообщение",
   "promptInput.send.errorTitle": "Не удалось отправить",

packages/ui/src/lib/i18n/messages/zh-Hans/messaging.ts

@@ -144,6 +144,8 @@ export const messagingMessages = {
   "promptInput.overlay.againToAbort": "再次按下以中止会话",
   "promptInput.stopSession.ariaLabel": "停止会话",
   "promptInput.stopSession.title": "停止会话",
+  "promptInput.clear.ariaLabel": "清除输入框文本",
+  "promptInput.clear.title": "清除输入框文本",
   "promptInput.send.ariaLabel": "发送消息",
   "promptInput.send.errorFallback": "发送消息失败",
   "promptInput.send.errorTitle": "发送失败",

packages/ui/src/styles/messaging/prompt-input.css

@@ -37,7 +37,7 @@
 .prompt-input {
   @apply w-full pt-2.5 border text-sm resize-none outline-none transition-colors;
   padding-inline-start: 0.75rem;
-  padding-inline-end: 5.5rem;
+  padding-inline-end: 7.5rem;
   font-family: inherit;
   background-color: var(--surface-base);
   color: var(--text-primary);
@@ -90,22 +90,32 @@
   inset-inline-end: 0.25rem;
   bottom: 0.25rem;
   display: flex;
-  flex-direction: column;
+  flex-direction: row;
-  align-items: flex-end;
+  align-items: flex-start;
-  justify-content: flex-start;
+  justify-content: flex-end;
   gap: 0.125rem;
   z-index: 2;
 }
 
-.prompt-nav-top-row {
+.prompt-nav-column {
   display: flex;
-  align-items: center;
+  flex-direction: column;
-  justify-content: flex-end;
+  align-items: flex-end;
+  justify-content: flex-start;
   gap: 0.125rem;
 }
 
+.prompt-nav-column-left {
+  min-width: 1.75rem;
+}
+
+.prompt-nav-column-right {
+  min-width: 1.75rem;
+}
+
 .prompt-expand-button,
-.prompt-history-button {
+.prompt-history-button,
+.prompt-clear-button {
   @apply w-7 h-7 flex items-center justify-center rounded-md;
   color: var(--text-muted);
   background-color: var(--control-ghost-bg);
@@ -115,7 +125,8 @@
 }
 
 .prompt-expand-button:hover:not(:disabled),
-.prompt-history-button:hover:not(:disabled) {
+.prompt-history-button:hover:not(:disabled),
+.prompt-clear-button:hover:not(:disabled) {
   background-color: var(--surface-secondary);
   color: var(--text-primary);
 }
@@ -127,7 +138,8 @@
 }
 
 .prompt-expand-button:disabled,
-.prompt-history-button:disabled {
+.prompt-history-button:disabled,
+.prompt-clear-button:disabled {
   opacity: 0.4;
   cursor: not-allowed;
 }
@@ -397,7 +409,7 @@
   .prompt-input {
     min-height: 0;
     padding: 0.5rem 0.75rem;
-    padding-inline-end: 5.5rem;
+    padding-inline-end: 7.5rem;
     padding-bottom: 0.75rem;
   }