fix(ui): Fix Chineses/CJK IME space key dropping in chat input

desktop-shared/src/main/kotlin/io/askimo/ui/chat/ChatInputField.kt

@@ -72,7 +72,6 @@ import androidx.compose.ui.draw.clip
 import androidx.compose.ui.focus.FocusRequester
 import androidx.compose.ui.focus.focusRequester
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.input.key.onPreviewKeyEvent
 import androidx.compose.ui.input.pointer.PointerIcon
 import androidx.compose.ui.input.pointer.pointerHoverIcon
 import androidx.compose.ui.input.pointer.pointerInput
@@ -120,6 +119,7 @@ import io.askimo.core.util.TimeUtil
 import io.askimo.core.util.formatFileSize
 import io.askimo.ui.common.i18n.stringResource
 import io.askimo.ui.common.keymap.KeyMapManager
+import io.askimo.ui.common.keymap.onImeAwarePreviewKeyEvent
 import io.askimo.ui.common.theme.AppComponents
 import io.askimo.ui.common.theme.AppComponents.dropdownMenu
 import io.askimo.ui.common.theme.AppTextStyles
@@ -477,9 +477,8 @@ fun chatInputField(
     Column(
         modifier = modifier
             .fillMaxWidth()
-            .onPreviewKeyEvent { keyEvent ->
-                val shortcut = KeyMapManager.handleKeyEvent(keyEvent)
-                when (shortcut) {
+            .onImeAwarePreviewKeyEvent(inputText.composition) { keyEvent ->
+                when (KeyMapManager.handleKeyEvent(keyEvent)) {
                     KeyMapManager.AppShortcut.ATTACH_FILE -> {
                         if (!isLoading) {
                             openFileDialog()
@@ -642,9 +641,8 @@ fun chatInputField(
                             .onGloballyPositioned { coordinates ->
                                 textFieldWidthPx = coordinates.size.width.toFloat()
                             }
-                            .onPreviewKeyEvent { keyEvent ->
-                                val shortcut = KeyMapManager.handleKeyEvent(keyEvent)
-                                when (shortcut) {
+                            .onImeAwarePreviewKeyEvent(inputText.composition) { keyEvent ->
+                                when (KeyMapManager.handleKeyEvent(keyEvent)) {
                                     KeyMapManager.AppShortcut.NEW_LINE -> {
                                         val cursorPosition = inputText.selection.start
                                         val textBeforeCursor = inputText.text.substring(0, cursorPosition)

desktop-shared/src/main/kotlin/io/askimo/ui/common/components/ActionInputField.kt

@@ -34,13 +34,13 @@ import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.Color
-import androidx.compose.ui.input.key.onPreviewKeyEvent
 import androidx.compose.ui.input.pointer.PointerIcon
 import androidx.compose.ui.input.pointer.pointerHoverIcon
 import androidx.compose.ui.text.TextRange
 import androidx.compose.ui.text.input.TextFieldValue
 import androidx.compose.ui.unit.dp
 import io.askimo.ui.common.keymap.KeyMapManager
+import io.askimo.ui.common.keymap.onImeAwarePreviewKeyEvent
 import io.askimo.ui.common.theme.AppComponents
 import io.askimo.ui.common.theme.AppTextStyles
 import io.askimo.ui.common.theme.Spacing
@@ -80,7 +80,7 @@ internal fun actionInputField(
 ) {
     val canSend = enabled && !isLoading && value.text.isNotBlank()
 
-    val keyModifier = Modifier.onPreviewKeyEvent { keyEvent ->
+    val keyModifier = Modifier.onImeAwarePreviewKeyEvent(value.composition) { keyEvent ->
         when (KeyMapManager.handleKeyEvent(keyEvent)) {
             KeyMapManager.AppShortcut.NEW_LINE -> {
                 val cursor = value.selection.start

desktop-shared/src/main/kotlin/io/askimo/ui/common/keymap/ImeAwareKeyEvent.kt

@@ -0,0 +1,40 @@
+/* SPDX-License-Identifier: AGPLv3
+ *
+ * Copyright (c) 2026 Askimo
+ */
+package io.askimo.ui.common.keymap
+
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.input.key.KeyEvent
+import androidx.compose.ui.input.key.onPreviewKeyEvent
+import androidx.compose.ui.text.TextRange
+
+/**
+ * A drop-in replacement for [onPreviewKeyEvent] that automatically suppresses shortcut
+ * interception during active IME composition sessions (Korean, Japanese, Chinese, etc.).
+ *
+ * ## Why this matters
+ * On Compose Multiplatform desktop, [onPreviewKeyEvent] fires for **every** AWT key event,
+ * including those that occur while the IME is mid-composition (e.g. assembling a Korean
+ * syllable). If a shortcut handler consumes Space or Enter at that point, the IME never
+ * receives the event and the composed character is dropped or joined to the next word.
+ *
+ * ## Usage
+ * Replace every `.onPreviewKeyEvent { ... }` on a text field (or its ancestor) with:
+ * ```kotlin
+ * .onImeAwarePreviewKeyEvent(textFieldValue.composition) { keyEvent -> ... }
+ * ```
+ *
+ * @param composition Pass [androidx.compose.ui.text.input.TextFieldValue.composition].
+ *   When non-null the IME has an active composition in progress and all key events are
+ *   passed through unconsumed to let the IME handle them natively.
+ * @param onKeyEvent The shortcut handler — identical contract to [onPreviewKeyEvent].
+ *   Return `true` to consume the event, `false` to let it propagate.
+ */
+fun Modifier.onImeAwarePreviewKeyEvent(
+    composition: TextRange?,
+    onKeyEvent: (KeyEvent) -> Boolean,
+): Modifier = onPreviewKeyEvent { keyEvent ->
+    if (composition != null) return@onPreviewKeyEvent false
+    onKeyEvent(keyEvent)
+}