diff --git a/resources/js/components/FeedbackState.vue b/resources/js/components/FeedbackState.vue
new file mode 100644
index 0000000..4e8b59d
--- /dev/null
+++ b/resources/js/components/FeedbackState.vue
@@ -0,0 +1,72 @@
+<script setup lang="ts">
+import { CircleAlert, CircleCheck, Inbox, LoaderCircle } from 'lucide-vue-next';
+import { computed } from 'vue';
+import { Button } from '@/components/ui/button';
+import { useLocalization } from '@/composables/useLocalization';
+
+const props = withDefaults(
+    defineProps<{
+        state: 'empty' | 'loading' | 'error' | 'success';
+        title?: string;
+        description?: string;
+        retryable?: boolean;
+    }>(),
+    { retryable: false },
+);
+defineEmits<{ retry: [] }>();
+const { t } = useLocalization();
+const icons = {
+    empty: Inbox,
+    loading: LoaderCircle,
+    error: CircleAlert,
+    success: CircleCheck,
+};
+const defaultTitles = {
+    empty: 'feedback.empty',
+    loading: 'common.loading',
+    error: 'common.error',
+    success: 'feedback.saved',
+} as const;
+const heading = computed(() => props.title ?? t(defaultTitles[props.state]));
+</script>
+
+<template>
+    <div
+        :role="state === 'error' ? 'alert' : 'status'"
+        :aria-busy="state === 'loading' || undefined"
+        :data-feedback="state"
+        class="gap-card bg-card p-card text-body text-card-foreground flex min-w-0 items-start rounded-md border"
+        :class="{
+            'border-destructive/40': state === 'error',
+            'border-success/40': state === 'success',
+        }"
+    >
+        <component
+            :is="icons[state]"
+            aria-hidden="true"
+            class="mt-0.5 size-5 shrink-0"
+            :class="{
+                'text-primary animate-spin motion-reduce:animate-none':
+                    state === 'loading',
+                'text-destructive': state === 'error',
+                'text-success-foreground': state === 'success',
+                'text-muted-foreground': state === 'empty',
+            }"
+        />
+        <div class="gap-stack grid min-w-0 flex-1 break-words">
+            <p class="font-semibold">{{ heading }}</p>
+            <p v-if="description" class="text-muted-foreground">
+                {{ description }}
+            </p>
+            <div v-if="$slots.default"><slot /></div>
+            <Button
+                v-if="retryable && state === 'error'"
+                type="button"
+                variant="outline"
+                class="justify-self-start"
+                @click="$emit('retry')"
+                >{{ t('common.retry') }}</Button
+            >
+        </div>
+    </div>
+</template>
diff --git a/resources/js/components/FormFeedback.vue b/resources/js/components/FormFeedback.vue
new file mode 100644
index 0000000..9d9e9a4
--- /dev/null
+++ b/resources/js/components/FormFeedback.vue
@@ -0,0 +1,67 @@
+<script setup lang="ts">
+import { computed, nextTick, useTemplateRef, watch } from 'vue';
+import FeedbackState from '@/components/FeedbackState.vue';
+import { useLocalization } from '@/composables/useLocalization';
+import type { FormFeedbackState } from '@/lib/form-feedback';
+
+const props = defineProps<{ state: FormFeedbackState }>();
+defineEmits<{ retry: [] }>();
+const { t } = useLocalization();
+const feedback = useTemplateRef<HTMLDivElement>('feedback');
+watch(
+    () => props.state,
+    async (state) => {
+        if (['validation', 'network', 'server', 'cancelled'].includes(state)) {
+            await nextTick();
+            if (props.state === state) {
+                feedback.value?.focus();
+            }
+        }
+    },
+);
+const titles = {
+    idle: 'feedback.saved',
+    loading: 'forms.saving',
+    success: 'feedback.saved',
+    validation: 'forms.validationTitle',
+    network: 'forms.networkTitle',
+    server: 'forms.serverTitle',
+    cancelled: 'forms.cancelledTitle',
+} as const;
+const descriptions = {
+    validation: 'forms.validationDescription',
+    network: 'forms.networkDescription',
+    server: 'forms.serverDescription',
+    cancelled: 'forms.cancelledDescription',
+} as const;
+const description = computed(() =>
+    props.state in descriptions
+        ? t(descriptions[props.state as keyof typeof descriptions])
+        : undefined,
+);
+</script>
+
+<template>
+    <div
+        ref="feedback"
+        v-show="state !== 'idle'"
+        :data-form-state="state"
+        tabindex="-1"
+        class="focus-visible:ring-ring/35 rounded-md outline-none focus-visible:ring-2"
+    >
+        <FeedbackState
+            v-if="state !== 'idle'"
+            :state="
+                state === 'loading' || state === 'success' ? state : 'error'
+            "
+            :title="t(titles[state])"
+            :description="description"
+            :retryable="
+                state === 'network' ||
+                state === 'server' ||
+                state === 'cancelled'
+            "
+            @retry="$emit('retry')"
+        />
+    </div>
+</template>
diff --git a/resources/js/components/InputError.vue b/resources/js/components/InputError.vue
index 3db9519..7dbf753 100644
--- a/resources/js/components/InputError.vue
+++ b/resources/js/components/InputError.vue
@@ -5,8 +5,8 @@ defineProps<{
 </script>
 
 <template>
-    <div v-show="message">
-        <p class="text-sm text-red-600 dark:text-red-500">
+    <div v-show="message" role="alert">
+        <p class="text-body text-destructive">
             {{ message }}
         </p>
     </div>
diff --git a/resources/js/components/ui/dialog/DialogContent.vue b/resources/js/components/ui/dialog/DialogContent.vue
index 7f86b47..c51579f 100644
--- a/resources/js/components/ui/dialog/DialogContent.vue
+++ b/resources/js/components/ui/dialog/DialogContent.vue
@@ -1,53 +1,67 @@
 <script setup lang="ts">
-import type { DialogContentEmits, DialogContentProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import { X } from "lucide-vue-next"
+import type { DialogContentEmits, DialogContentProps } from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { X } from "lucide-vue-next";
 import {
-  DialogClose,
-  DialogContent,
-  DialogPortal,
-  useForwardPropsEmits,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
-import DialogOverlay from "./DialogOverlay.vue"
+    DialogClose,
+    DialogContent,
+    DialogPortal,
+    useForwardPropsEmits,
+} from "reka-ui";
+import { cn } from "@/lib/utils";
+import DialogOverlay from "./DialogOverlay.vue";
+import { useDialogFocus } from "@/composables/useDialogFocus";
+import { useLocalization } from "@/composables/useLocalization";
 
 defineOptions({
-  inheritAttrs: false,
-})
+    inheritAttrs: false,
+});
 
-const props = withDefaults(defineProps<DialogContentProps & { class?: HTMLAttributes["class"], showCloseButton?: boolean }>(), {
-  showCloseButton: true,
-})
-const emits = defineEmits<DialogContentEmits>()
+const props = withDefaults(
+    defineProps<
+        DialogContentProps & {
+            class?: HTMLAttributes["class"];
+            showCloseButton?: boolean;
+        }
+    >(),
+    {
+        showCloseButton: true,
+    },
+);
+const emits = defineEmits<DialogContentEmits>();
 
-const delegatedProps = reactiveOmit(props, "class")
+const delegatedProps = reactiveOmit(props, "class", "showCloseButton");
+const { restoreFocus } = useDialogFocus();
+const { t } = useLocalization();
 
-const forwarded = useForwardPropsEmits(delegatedProps, emits)
+const forwarded = useForwardPropsEmits(delegatedProps, emits);
 </script>
 
 <template>
-  <DialogPortal>
-    <DialogOverlay />
-    <DialogContent
-      data-slot="dialog-content"
-      v-bind="{ ...$attrs, ...forwarded }"
-      :class="
-        cn(
-          'bg-background data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 fixed top-[50%] left-[50%] z-50 grid w-full max-w-[calc(100%-2rem)] translate-x-[-50%] translate-y-[-50%] gap-4 rounded-lg border p-6 shadow-lg duration-200 sm:max-w-lg',
-          props.class,
-        )"
-    >
-      <slot />
+    <DialogPortal>
+        <DialogOverlay />
+        <DialogContent
+            data-slot="dialog-content"
+            v-bind="{ ...$attrs, ...forwarded }"
+            @close-auto-focus="restoreFocus"
+            :class="
+                cn(
+                    'bg-card text-card-foreground data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 fixed top-[50%] left-[50%] z-50 grid max-h-[calc(100dvh-2rem)] w-full max-w-[calc(100%-2rem)] translate-x-[-50%] translate-y-[-50%] gap-column overflow-y-auto overscroll-contain rounded-md border p-page shadow-lg duration-200 motion-reduce:animate-none sm:max-w-lg',
+                    props.class,
+                )
+            "
+        >
+            <slot />
 
-      <DialogClose
-        v-if="showCloseButton"
-        data-slot="dialog-close"
-        class="ring-offset-background focus:ring-ring data-[state=open]:bg-accent data-[state=open]:text-muted-foreground absolute top-4 right-4 rounded-xs opacity-70 transition-opacity hover:opacity-100 focus:ring-2 focus:ring-offset-2 focus:outline-hidden disabled:pointer-events-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4"
-      >
-        <X />
-        <span class="sr-only">Close</span>
-      </DialogClose>
-    </DialogContent>
-  </DialogPortal>
+            <DialogClose
+                v-if="showCloseButton"
+                data-slot="dialog-close"
+                class="ring-offset-background focus-visible:ring-ring absolute top-1 right-1 flex size-control items-center justify-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground focus-visible:ring-2 focus-visible:ring-offset-2 focus-visible:outline-hidden disabled:pointer-events-none [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*='size-'])]:size-4"
+            >
+                <X />
+                <span class="sr-only">{{ t("common.close") }}</span>
+            </DialogClose>
+        </DialogContent>
+    </DialogPortal>
 </template>
diff --git a/resources/js/components/ui/dialog/DialogHeader.vue b/resources/js/components/ui/dialog/DialogHeader.vue
index bfc3c64..8459b4c 100644
--- a/resources/js/components/ui/dialog/DialogHeader.vue
+++ b/resources/js/components/ui/dialog/DialogHeader.vue
@@ -1,17 +1,17 @@
 <script setup lang="ts">
-import type { HTMLAttributes } from "vue"
-import { cn } from "@/lib/utils"
+import type { HTMLAttributes } from "vue";
+import { cn } from "@/lib/utils";
 
 const props = defineProps<{
-  class?: HTMLAttributes["class"]
-}>()
+    class?: HTMLAttributes["class"];
+}>();
 </script>
 
 <template>
-  <div
-    data-slot="dialog-header"
-    :class="cn('flex flex-col gap-2 text-center sm:text-left', props.class)"
-  >
-    <slot />
-  </div>
+    <div
+        data-slot="dialog-header"
+        :class="cn('flex flex-col gap-stack pr-6 text-left', props.class)"
+    >
+        <slot />
+    </div>
 </template>
diff --git a/resources/js/components/ui/dialog/DialogScrollContent.vue b/resources/js/components/ui/dialog/DialogScrollContent.vue
index f2475db..5e3c345 100644
--- a/resources/js/components/ui/dialog/DialogScrollContent.vue
+++ b/resources/js/components/ui/dialog/DialogScrollContent.vue
@@ -1,59 +1,71 @@
 <script setup lang="ts">
-import type { DialogContentEmits, DialogContentProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import { X } from "lucide-vue-next"
+import type { DialogContentEmits, DialogContentProps } from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { X } from "lucide-vue-next";
 import {
-  DialogClose,
-  DialogContent,
-  DialogOverlay,
-  DialogPortal,
-  useForwardPropsEmits,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
+    DialogClose,
+    DialogContent,
+    DialogOverlay,
+    DialogPortal,
+    useForwardPropsEmits,
+} from "reka-ui";
+import { cn } from "@/lib/utils";
+import { useDialogFocus } from "@/composables/useDialogFocus";
+import { useLocalization } from "@/composables/useLocalization";
 
 defineOptions({
-  inheritAttrs: false,
-})
+    inheritAttrs: false,
+});
 
-const props = defineProps<DialogContentProps & { class?: HTMLAttributes["class"] }>()
-const emits = defineEmits<DialogContentEmits>()
+const props = defineProps<
+    DialogContentProps & { class?: HTMLAttributes["class"] }
+>();
+const emits = defineEmits<DialogContentEmits>();
 
-const delegatedProps = reactiveOmit(props, "class")
+const delegatedProps = reactiveOmit(props, "class");
 
-const forwarded = useForwardPropsEmits(delegatedProps, emits)
+const forwarded = useForwardPropsEmits(delegatedProps, emits);
+const { restoreFocus } = useDialogFocus();
+const { t } = useLocalization();
 </script>
 
 <template>
-  <DialogPortal>
-    <DialogOverlay
-      class="fixed inset-0 z-50 grid place-items-center overflow-y-auto bg-black/80  data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0"
-    >
-      <DialogContent
-        :class="
-          cn(
-            'relative z-50 grid w-full max-w-lg my-8 gap-4 border border-border bg-background p-6 shadow-lg duration-200 sm:rounded-lg md:w-full',
-            props.class,
-          )
-        "
-        v-bind="{ ...$attrs, ...forwarded }"
-        @pointer-down-outside="(event) => {
-          const originalEvent = event.detail.originalEvent;
-          const target = originalEvent.target as HTMLElement;
-          if (originalEvent.offsetX > target.clientWidth || originalEvent.offsetY > target.clientHeight) {
-            event.preventDefault();
-          }
-        }"
-      >
-        <slot />
-
-        <DialogClose
-          class="absolute top-4 right-4 p-0.5 transition-colors rounded-md hover:bg-secondary"
+    <DialogPortal>
+        <DialogOverlay
+            class="fixed inset-0 z-50 grid place-items-center overflow-y-auto bg-black/80 data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0"
         >
-          <X class="w-4 h-4" />
-          <span class="sr-only">Close</span>
-        </DialogClose>
-      </DialogContent>
-    </DialogOverlay>
-  </DialogPortal>
+            <DialogContent
+                :class="
+                    cn(
+                        'relative z-50 my-4 grid w-full max-w-[calc(100%-2rem)] gap-column rounded-md border bg-card p-page text-card-foreground shadow-lg duration-200 sm:max-w-lg',
+                        props.class,
+                    )
+                "
+                v-bind="{ ...$attrs, ...forwarded }"
+                @close-auto-focus="restoreFocus"
+                @pointer-down-outside="
+                    (event) => {
+                        const originalEvent = event.detail.originalEvent;
+                        const target = originalEvent.target as HTMLElement;
+                        if (
+                            originalEvent.offsetX > target.clientWidth ||
+                            originalEvent.offsetY > target.clientHeight
+                        ) {
+                            event.preventDefault();
+                        }
+                    }
+                "
+            >
+                <slot />
+
+                <DialogClose
+                    class="absolute top-1 right-1 flex size-control items-center justify-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground focus-visible:outline-2 focus-visible:outline-ring"
+                >
+                    <X class="w-4 h-4" />
+                    <span class="sr-only">{{ t("common.close") }}</span>
+                </DialogClose>
+            </DialogContent>
+        </DialogOverlay>
+    </DialogPortal>
 </template>
diff --git a/resources/js/components/ui/dropdown-menu/DropdownMenuCheckboxItem.vue b/resources/js/components/ui/dropdown-menu/DropdownMenuCheckboxItem.vue
index 1253078..6a1d88f 100644
--- a/resources/js/components/ui/dropdown-menu/DropdownMenuCheckboxItem.vue
+++ b/resources/js/components/ui/dropdown-menu/DropdownMenuCheckboxItem.vue
@@ -1,39 +1,48 @@
 <script setup lang="ts">
-import type { DropdownMenuCheckboxItemEmits, DropdownMenuCheckboxItemProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import { Check } from "lucide-vue-next"
+import type {
+    DropdownMenuCheckboxItemEmits,
+    DropdownMenuCheckboxItemProps,
+} from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { Check } from "lucide-vue-next";
 import {
-  DropdownMenuCheckboxItem,
-  DropdownMenuItemIndicator,
-  useForwardPropsEmits,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
+    DropdownMenuCheckboxItem,
+    DropdownMenuItemIndicator,
+    useForwardPropsEmits,
+} from "reka-ui";
+import { cn } from "@/lib/utils";
 
-const props = defineProps<DropdownMenuCheckboxItemProps & { class?: HTMLAttributes["class"] }>()
-const emits = defineEmits<DropdownMenuCheckboxItemEmits>()
+const props = defineProps<
+    DropdownMenuCheckboxItemProps & { class?: HTMLAttributes["class"] }
+>();
+const emits = defineEmits<DropdownMenuCheckboxItemEmits>();
 
-const delegatedProps = reactiveOmit(props, "class")
+const delegatedProps = reactiveOmit(props, "class");
 
-const forwarded = useForwardPropsEmits(delegatedProps, emits)
+const forwarded = useForwardPropsEmits(delegatedProps, emits);
 </script>
 
 <template>
-  <DropdownMenuCheckboxItem
-    data-slot="dropdown-menu-checkbox-item"
-    v-bind="forwarded"
-    :class=" cn(
-      'focus:bg-accent focus:text-accent-foreground relative flex cursor-default items-center gap-2 rounded-sm py-1.5 pr-2 pl-8 text-sm outline-hidden select-none data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*=\'size-\'])]:size-4',
-      props.class,
-    )"
-  >
-    <span class="pointer-events-none absolute left-2 flex size-3.5 items-center justify-center">
-      <DropdownMenuItemIndicator>
-        <slot name="indicator-icon">
-          <Check class="size-4" />
-        </slot>
-      </DropdownMenuItemIndicator>
-    </span>
-    <slot />
-  </DropdownMenuCheckboxItem>
+    <DropdownMenuCheckboxItem
+        data-slot="dropdown-menu-checkbox-item"
+        v-bind="forwarded"
+        :class="
+            cn(
+                'focus:bg-accent focus:text-accent-foreground relative flex min-h-control cursor-default items-center gap-2 rounded-sm py-1.5 pr-2 pl-8 text-sm outline-hidden select-none data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*=\'size-\'])]:size-4',
+                props.class,
+            )
+        "
+    >
+        <span
+            class="pointer-events-none absolute left-2 flex size-3.5 items-center justify-center"
+        >
+            <DropdownMenuItemIndicator>
+                <slot name="indicator-icon">
+                    <Check class="size-4" />
+                </slot>
+            </DropdownMenuItemIndicator>
+        </span>
+        <slot />
+    </DropdownMenuCheckboxItem>
 </template>
diff --git a/resources/js/components/ui/dropdown-menu/DropdownMenuContent.vue b/resources/js/components/ui/dropdown-menu/DropdownMenuContent.vue
index 7c43014..8e4b0c6 100644
--- a/resources/js/components/ui/dropdown-menu/DropdownMenuContent.vue
+++ b/resources/js/components/ui/dropdown-menu/DropdownMenuContent.vue
@@ -1,39 +1,49 @@
 <script setup lang="ts">
-import type { DropdownMenuContentEmits, DropdownMenuContentProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
+import type {
+    DropdownMenuContentEmits,
+    DropdownMenuContentProps,
+} from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
 import {
-  DropdownMenuContent,
-  DropdownMenuPortal,
-  useForwardPropsEmits,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
+    DropdownMenuContent,
+    DropdownMenuPortal,
+    useForwardPropsEmits,
+} from "reka-ui";
+import { cn } from "@/lib/utils";
 
 defineOptions({
-  inheritAttrs: false,
-})
+    inheritAttrs: false,
+});
 
 const props = withDefaults(
-  defineProps<DropdownMenuContentProps & { class?: HTMLAttributes["class"] }>(),
-  {
-    sideOffset: 4,
-  },
-)
-const emits = defineEmits<DropdownMenuContentEmits>()
+    defineProps<
+        DropdownMenuContentProps & { class?: HTMLAttributes["class"] }
+    >(),
+    {
+        sideOffset: 4,
+    },
+);
+const emits = defineEmits<DropdownMenuContentEmits>();
 
-const delegatedProps = reactiveOmit(props, "class")
+const delegatedProps = reactiveOmit(props, "class");
 
-const forwarded = useForwardPropsEmits(delegatedProps, emits)
+const forwarded = useForwardPropsEmits(delegatedProps, emits);
 </script>
 
 <template>
-  <DropdownMenuPortal>
-    <DropdownMenuContent
-      data-slot="dropdown-menu-content"
-      v-bind="{ ...$attrs, ...forwarded }"
-      :class="cn('bg-popover text-popover-foreground data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 z-50 max-h-(--reka-dropdown-menu-content-available-height) min-w-[8rem] origin-(--reka-dropdown-menu-content-transform-origin) overflow-x-hidden overflow-y-auto rounded-md border p-1 shadow-md', props.class)"
-    >
-      <slot />
-    </DropdownMenuContent>
-  </DropdownMenuPortal>
+    <DropdownMenuPortal>
+        <DropdownMenuContent
+            data-slot="dropdown-menu-content"
+            v-bind="{ ...$attrs, ...forwarded }"
+            :class="
+                cn(
+                    'bg-popover text-popover-foreground data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 z-50 max-h-(--reka-dropdown-menu-content-available-height) min-w-[8rem] max-w-[calc(100vw-2rem)] origin-(--reka-dropdown-menu-content-transform-origin) overflow-x-hidden overflow-y-auto rounded-md border p-1 shadow-md',
+                    props.class,
+                )
+            "
+        >
+            <slot />
+        </DropdownMenuContent>
+    </DropdownMenuPortal>
 </template>
diff --git a/resources/js/components/ui/dropdown-menu/DropdownMenuItem.vue b/resources/js/components/ui/dropdown-menu/DropdownMenuItem.vue
index f56cae3..aec4fc5 100644
--- a/resources/js/components/ui/dropdown-menu/DropdownMenuItem.vue
+++ b/resources/js/components/ui/dropdown-menu/DropdownMenuItem.vue
@@ -1,31 +1,41 @@
 <script setup lang="ts">
-import type { DropdownMenuItemProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import { DropdownMenuItem, useForwardProps } from "reka-ui"
-import { cn } from "@/lib/utils"
+import type { DropdownMenuItemProps } from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { DropdownMenuItem, useForwardProps } from "reka-ui";
+import { cn } from "@/lib/utils";
 
-const props = withDefaults(defineProps<DropdownMenuItemProps & {
-  class?: HTMLAttributes["class"]
-  inset?: boolean
-  variant?: "default" | "destructive"
-}>(), {
-  variant: "default",
-})
+const props = withDefaults(
+    defineProps<
+        DropdownMenuItemProps & {
+            class?: HTMLAttributes["class"];
+            inset?: boolean;
+            variant?: "default" | "destructive";
+        }
+    >(),
+    {
+        variant: "default",
+    },
+);
 
-const delegatedProps = reactiveOmit(props, "inset", "variant", "class")
+const delegatedProps = reactiveOmit(props, "inset", "variant", "class");
 
-const forwardedProps = useForwardProps(delegatedProps)
+const forwardedProps = useForwardProps(delegatedProps);
 </script>
 
 <template>
-  <DropdownMenuItem
-    data-slot="dropdown-menu-item"
-    :data-inset="inset ? '' : undefined"
-    :data-variant="variant"
-    v-bind="forwardedProps"
-    :class="cn('focus:bg-accent focus:text-accent-foreground data-[variant=destructive]:text-destructive data-[variant=destructive]:focus:bg-destructive/10 dark:data-[variant=destructive]:focus:bg-destructive/20 data-[variant=destructive]:focus:text-destructive data-[variant=destructive]:*:[svg]:!text-destructive [&_svg:not([class*=\'text-\'])]:text-muted-foreground relative flex cursor-default items-center gap-2 rounded-sm px-2 py-1.5 text-sm outline-hidden select-none data-[disabled]:pointer-events-none data-[disabled]:opacity-50 data-[inset]:pl-8 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*=\'size-\'])]:size-4', props.class)"
-  >
-    <slot />
-  </DropdownMenuItem>
+    <DropdownMenuItem
+        data-slot="dropdown-menu-item"
+        :data-inset="inset ? '' : undefined"
+        :data-variant="variant"
+        v-bind="forwardedProps"
+        :class="
+            cn(
+                'focus:bg-accent focus:text-accent-foreground data-[variant=destructive]:text-destructive data-[variant=destructive]:focus:bg-destructive/10 dark:data-[variant=destructive]:focus:bg-destructive/20 data-[variant=destructive]:focus:text-destructive data-[variant=destructive]:*:[svg]:!text-destructive [&_svg:not([class*=\'text-\'])]:text-muted-foreground relative flex min-h-control cursor-default items-center gap-2 rounded-sm px-2 py-1.5 text-sm outline-hidden select-none data-[disabled]:pointer-events-none data-[disabled]:opacity-50 data-[inset]:pl-8 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*=\'size-\'])]:size-4',
+                props.class,
+            )
+        "
+    >
+        <slot />
+    </DropdownMenuItem>
 </template>
diff --git a/resources/js/components/ui/dropdown-menu/DropdownMenuRadioItem.vue b/resources/js/components/ui/dropdown-menu/DropdownMenuRadioItem.vue
index e03c40c..f94eebe 100644
--- a/resources/js/components/ui/dropdown-menu/DropdownMenuRadioItem.vue
+++ b/resources/js/components/ui/dropdown-menu/DropdownMenuRadioItem.vue
@@ -1,40 +1,49 @@
 <script setup lang="ts">
-import type { DropdownMenuRadioItemEmits, DropdownMenuRadioItemProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import { Circle } from "lucide-vue-next"
+import type {
+    DropdownMenuRadioItemEmits,
+    DropdownMenuRadioItemProps,
+} from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { Circle } from "lucide-vue-next";
 import {
-  DropdownMenuItemIndicator,
-  DropdownMenuRadioItem,
-  useForwardPropsEmits,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
+    DropdownMenuItemIndicator,
+    DropdownMenuRadioItem,
+    useForwardPropsEmits,
+} from "reka-ui";
+import { cn } from "@/lib/utils";
 
-const props = defineProps<DropdownMenuRadioItemProps & { class?: HTMLAttributes["class"] }>()
+const props = defineProps<
+    DropdownMenuRadioItemProps & { class?: HTMLAttributes["class"] }
+>();
 
-const emits = defineEmits<DropdownMenuRadioItemEmits>()
+const emits = defineEmits<DropdownMenuRadioItemEmits>();
 
-const delegatedProps = reactiveOmit(props, "class")
+const delegatedProps = reactiveOmit(props, "class");
 
-const forwarded = useForwardPropsEmits(delegatedProps, emits)
+const forwarded = useForwardPropsEmits(delegatedProps, emits);
 </script>
 
 <template>
-  <DropdownMenuRadioItem
-    data-slot="dropdown-menu-radio-item"
-    v-bind="forwarded"
-    :class="cn(
-      'focus:bg-accent focus:text-accent-foreground relative flex cursor-default items-center gap-2 rounded-sm py-1.5 pr-2 pl-8 text-sm outline-hidden select-none data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*=\'size-\'])]:size-4',
-      props.class,
-    )"
-  >
-    <span class="pointer-events-none absolute left-2 flex size-3.5 items-center justify-center">
-      <DropdownMenuItemIndicator>
-        <slot name="indicator-icon">
-          <Circle class="size-2 fill-current" />
-        </slot>
-      </DropdownMenuItemIndicator>
-    </span>
-    <slot />
-  </DropdownMenuRadioItem>
+    <DropdownMenuRadioItem
+        data-slot="dropdown-menu-radio-item"
+        v-bind="forwarded"
+        :class="
+            cn(
+                'focus:bg-accent focus:text-accent-foreground relative flex min-h-control cursor-default items-center gap-2 rounded-sm py-1.5 pr-2 pl-8 text-sm outline-hidden select-none data-[disabled]:pointer-events-none data-[disabled]:opacity-50 [&_svg]:pointer-events-none [&_svg]:shrink-0 [&_svg:not([class*=\'size-\'])]:size-4',
+                props.class,
+            )
+        "
+    >
+        <span
+            class="pointer-events-none absolute left-2 flex size-3.5 items-center justify-center"
+        >
+            <DropdownMenuItemIndicator>
+                <slot name="indicator-icon">
+                    <Circle class="size-2 fill-current" />
+                </slot>
+            </DropdownMenuItemIndicator>
+        </span>
+        <slot />
+    </DropdownMenuRadioItem>
 </template>
diff --git a/resources/js/components/ui/dropdown-menu/DropdownMenuSubContent.vue b/resources/js/components/ui/dropdown-menu/DropdownMenuSubContent.vue
index d7c6b08..b8573a1 100644
--- a/resources/js/components/ui/dropdown-menu/DropdownMenuSubContent.vue
+++ b/resources/js/components/ui/dropdown-menu/DropdownMenuSubContent.vue
@@ -1,27 +1,34 @@
 <script setup lang="ts">
-import type { DropdownMenuSubContentEmits, DropdownMenuSubContentProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import {
-  DropdownMenuSubContent,
-  useForwardPropsEmits,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
+import type {
+    DropdownMenuSubContentEmits,
+    DropdownMenuSubContentProps,
+} from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { DropdownMenuSubContent, useForwardPropsEmits } from "reka-ui";
+import { cn } from "@/lib/utils";
 
-const props = defineProps<DropdownMenuSubContentProps & { class?: HTMLAttributes["class"] }>()
-const emits = defineEmits<DropdownMenuSubContentEmits>()
+const props = defineProps<
+    DropdownMenuSubContentProps & { class?: HTMLAttributes["class"] }
+>();
+const emits = defineEmits<DropdownMenuSubContentEmits>();
 
-const delegatedProps = reactiveOmit(props, "class")
+const delegatedProps = reactiveOmit(props, "class");
 
-const forwarded = useForwardPropsEmits(delegatedProps, emits)
+const forwarded = useForwardPropsEmits(delegatedProps, emits);
 </script>
 
 <template>
-  <DropdownMenuSubContent
-    data-slot="dropdown-menu-sub-content"
-    v-bind="forwarded"
-    :class="cn('bg-popover text-popover-foreground data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 z-50 min-w-[8rem] origin-(--reka-dropdown-menu-content-transform-origin) overflow-hidden rounded-md border p-1 shadow-lg', props.class)"
-  >
-    <slot />
-  </DropdownMenuSubContent>
+    <DropdownMenuSubContent
+        data-slot="dropdown-menu-sub-content"
+        v-bind="forwarded"
+        :class="
+            cn(
+                'bg-popover text-popover-foreground data-[state=open]:animate-in data-[state=closed]:animate-out data-[state=closed]:fade-out-0 data-[state=open]:fade-in-0 data-[state=closed]:zoom-out-95 data-[state=open]:zoom-in-95 data-[side=bottom]:slide-in-from-top-2 data-[side=left]:slide-in-from-right-2 data-[side=right]:slide-in-from-left-2 data-[side=top]:slide-in-from-bottom-2 z-50 max-h-(--reka-dropdown-menu-content-available-height) min-w-[8rem] max-w-[calc(100vw-2rem)] origin-(--reka-dropdown-menu-content-transform-origin) overflow-x-hidden overflow-y-auto rounded-md border p-1 shadow-lg',
+                props.class,
+            )
+        "
+    >
+        <slot />
+    </DropdownMenuSubContent>
 </template>
diff --git a/resources/js/components/ui/dropdown-menu/DropdownMenuSubTrigger.vue b/resources/js/components/ui/dropdown-menu/DropdownMenuSubTrigger.vue
index 1683aaf..fa451c8 100644
--- a/resources/js/components/ui/dropdown-menu/DropdownMenuSubTrigger.vue
+++ b/resources/js/components/ui/dropdown-menu/DropdownMenuSubTrigger.vue
@@ -1,30 +1,34 @@
 <script setup lang="ts">
-import type { DropdownMenuSubTriggerProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import { ChevronRight } from "lucide-vue-next"
-import {
-  DropdownMenuSubTrigger,
-  useForwardProps,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
+import type { DropdownMenuSubTriggerProps } from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { ChevronRight } from "lucide-vue-next";
+import { DropdownMenuSubTrigger, useForwardProps } from "reka-ui";
+import { cn } from "@/lib/utils";
 
-const props = defineProps<DropdownMenuSubTriggerProps & { class?: HTMLAttributes["class"], inset?: boolean }>()
+const props = defineProps<
+    DropdownMenuSubTriggerProps & {
+        class?: HTMLAttributes["class"];
+        inset?: boolean;
+    }
+>();
 
-const delegatedProps = reactiveOmit(props, "class", "inset")
-const forwardedProps = useForwardProps(delegatedProps)
+const delegatedProps = reactiveOmit(props, "class", "inset");
+const forwardedProps = useForwardProps(delegatedProps);
 </script>
 
 <template>
-  <DropdownMenuSubTrigger
-    data-slot="dropdown-menu-sub-trigger"
-    v-bind="forwardedProps"
-    :class="cn(
-      'focus:bg-accent focus:text-accent-foreground data-[state=open]:bg-accent data-[state=open]:text-accent-foreground flex cursor-default items-center rounded-sm px-2 py-1.5 text-sm outline-hidden select-none data-[inset]:pl-8',
-      props.class,
-    )"
-  >
-    <slot />
-    <ChevronRight class="ml-auto size-4" />
-  </DropdownMenuSubTrigger>
+    <DropdownMenuSubTrigger
+        data-slot="dropdown-menu-sub-trigger"
+        v-bind="forwardedProps"
+        :class="
+            cn(
+                'focus:bg-accent focus:text-accent-foreground data-[state=open]:bg-accent data-[state=open]:text-accent-foreground flex min-h-control cursor-default items-center rounded-sm px-2 py-1.5 text-sm outline-hidden select-none data-[inset]:pl-8',
+                props.class,
+            )
+        "
+    >
+        <slot />
+        <ChevronRight class="ml-auto size-4" />
+    </DropdownMenuSubTrigger>
 </template>
diff --git a/resources/js/components/ui/sheet/SheetContent.vue b/resources/js/components/ui/sheet/SheetContent.vue
index e0c4b8f..f3a636f 100644
--- a/resources/js/components/ui/sheet/SheetContent.vue
+++ b/resources/js/components/ui/sheet/SheetContent.vue
@@ -1,62 +1,70 @@
 <script setup lang="ts">
-import type { DialogContentEmits, DialogContentProps } from "reka-ui"
-import type { HTMLAttributes } from "vue"
-import { reactiveOmit } from "@vueuse/core"
-import { X } from "lucide-vue-next"
+import type { DialogContentEmits, DialogContentProps } from "reka-ui";
+import type { HTMLAttributes } from "vue";
+import { reactiveOmit } from "@vueuse/core";
+import { X } from "lucide-vue-next";
 import {
-  DialogClose,
-  DialogContent,
-  DialogPortal,
-  useForwardPropsEmits,
-} from "reka-ui"
-import { cn } from "@/lib/utils"
-import SheetOverlay from "./SheetOverlay.vue"
+    DialogClose,
+    DialogContent,
+    DialogPortal,
+    useForwardPropsEmits,
+} from "reka-ui";
+import { cn } from "@/lib/utils";
+import SheetOverlay from "./SheetOverlay.vue";
+import { useDialogFocus } from "@/composables/useDialogFocus";
+import { useLocalization } from "@/composables/useLocalization";
 
 interface SheetContentProps extends DialogContentProps {
-  class?: HTMLAttributes["class"]
-  side?: "top" | "right" | "bottom" | "left"
+    class?: HTMLAttributes["class"];
+    side?: "top" | "right" | "bottom" | "left";
 }
 
 defineOptions({
-  inheritAttrs: false,
-})
+    inheritAttrs: false,
+});
 
 const props = withDefaults(defineProps<SheetContentProps>(), {
-  side: "right",
-})
-const emits = defineEmits<DialogContentEmits>()
+    side: "right",
+});
+const emits = defineEmits<DialogContentEmits>();
 
-const delegatedProps = reactiveOmit(props, "class", "side")
+const delegatedProps = reactiveOmit(props, "class", "side");
 
-const forwarded = useForwardPropsEmits(delegatedProps, emits)
+const forwarded = useForwardPropsEmits(delegatedProps, emits);
+const { restoreFocus } = useDialogFocus();
+const { t } = useLocalization();
 </script>
 
 <template>
-  <DialogPortal>
-    <SheetOverlay />
-    <DialogContent
-      data-slot="sheet-content"
-      :class="cn(
-        'bg-background data-[state=open]:animate-in data-[state=closed]:animate-out fixed z-50 flex flex-col gap-4 shadow-lg transition ease-in-out data-[state=closed]:duration-300 data-[state=open]:duration-500',
-        side === 'right'
-          && 'data-[state=closed]:slide-out-to-right data-[state=open]:slide-in-from-right inset-y-0 right-0 h-full w-3/4 border-l sm:max-w-sm',
-        side === 'left'
-          && 'data-[state=closed]:slide-out-to-left data-[state=open]:slide-in-from-left inset-y-0 left-0 h-full w-3/4 border-r sm:max-w-sm',
-        side === 'top'
-          && 'data-[state=closed]:slide-out-to-top data-[state=open]:slide-in-from-top inset-x-0 top-0 h-auto border-b',
-        side === 'bottom'
-          && 'data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom inset-x-0 bottom-0 h-auto border-t',
-        props.class)"
-      v-bind="{ ...$attrs, ...forwarded }"
-    >
-      <slot />
+    <DialogPortal>
+        <SheetOverlay />
+        <DialogContent
+            data-slot="sheet-content"
+            :class="
+                cn(
+                    'bg-background data-[state=open]:animate-in data-[state=closed]:animate-out fixed z-50 flex flex-col gap-4 shadow-lg transition ease-in-out data-[state=closed]:duration-300 data-[state=open]:duration-500',
+                    side === 'right' &&
+                        'data-[state=closed]:slide-out-to-right data-[state=open]:slide-in-from-right inset-y-0 right-0 h-full w-3/4 border-l sm:max-w-sm',
+                    side === 'left' &&
+                        'data-[state=closed]:slide-out-to-left data-[state=open]:slide-in-from-left inset-y-0 left-0 h-full w-3/4 border-r sm:max-w-sm',
+                    side === 'top' &&
+                        'data-[state=closed]:slide-out-to-top data-[state=open]:slide-in-from-top inset-x-0 top-0 h-auto border-b',
+                    side === 'bottom' &&
+                        'data-[state=closed]:slide-out-to-bottom data-[state=open]:slide-in-from-bottom inset-x-0 bottom-0 h-auto border-t',
+                    props.class,
+                )
+            "
+            v-bind="{ ...$attrs, ...forwarded }"
+            @close-auto-focus="restoreFocus"
+        >
+            <slot />
 
-      <DialogClose
-        class="ring-offset-background focus:ring-ring data-[state=open]:bg-secondary absolute top-4 right-4 rounded-xs opacity-70 transition-opacity hover:opacity-100 focus:ring-2 focus:ring-offset-2 focus:outline-hidden disabled:pointer-events-none"
-      >
-        <X class="size-4" />
-        <span class="sr-only">Close</span>
-      </DialogClose>
-    </DialogContent>
-  </DialogPortal>
+            <DialogClose
+                class="ring-offset-background focus-visible:ring-ring absolute top-1 right-1 flex size-control items-center justify-center rounded-md text-muted-foreground hover:bg-accent hover:text-foreground focus-visible:ring-2 focus-visible:ring-offset-2 focus-visible:outline-hidden disabled:pointer-events-none"
+            >
+                <X class="size-4" />
+                <span class="sr-only">{{ t("common.close") }}</span>
+            </DialogClose>
+        </DialogContent>
+    </DialogPortal>
 </template>
diff --git a/resources/js/composables/useDialogFocus.ts b/resources/js/composables/useDialogFocus.ts
new file mode 100644
index 0000000..c05a044
--- /dev/null
+++ b/resources/js/composables/useDialogFocus.ts
@@ -0,0 +1,34 @@
+import { injectDialogRootContext } from 'reka-ui';
+import { watch } from 'vue';
+
+/** Reka restores registered triggers; also support dialogs opened programmatically. */
+export function useDialogFocus() {
+    const context = injectDialogRootContext();
+    let previousFocus: HTMLElement | null = null;
+
+    watch(
+        context.open,
+        (open) => {
+            if (open && typeof document !== 'undefined') {
+                previousFocus =
+                    document.activeElement instanceof HTMLElement
+                        ? document.activeElement
+                        : null;
+            }
+        },
+        { flush: 'sync', immediate: true },
+    );
+
+    function restoreFocus(event: Event): void {
+        if (
+            !event.defaultPrevented &&
+            !context.triggerElement.value &&
+            previousFocus?.isConnected
+        ) {
+            event.preventDefault();
+            previousFocus.focus({ preventScroll: true });
+        }
+    }
+
+    return { restoreFocus };
+}
diff --git a/resources/js/composables/useFormProtection.ts b/resources/js/composables/useFormProtection.ts
new file mode 100644
index 0000000..83b6c9f
--- /dev/null
+++ b/resources/js/composables/useFormProtection.ts
@@ -0,0 +1,114 @@
+import type {
+    PendingVisit,
+    UrlMethodPair,
+    UseFormSubmitOptions,
+} from '@inertiajs/core';
+import { router } from '@inertiajs/vue3';
+import type { InertiaForm } from '@inertiajs/vue3';
+import { computed, onMounted, onUnmounted, ref } from 'vue';
+import { useUnsavedChanges } from '@/composables/useUnsavedChanges';
+import {
+    formRequestHeader,
+    isFormNetworkFailure,
+    matchesFormRequest,
+} from '@/lib/form-feedback';
+import type { FormFeedbackState } from '@/lib/form-feedback';
+
+/** Pair with a keyed useForm/useRemember for restoration on browser Back/Forward. */
+export function useFormProtection<T extends object>(
+    form: InertiaForm<T>,
+    options: { isDirty?: () => boolean } = {},
+) {
+    const failure = ref<FormFeedbackState | null>(null);
+    let ownVisit: PendingVisit | null = null;
+    let requestId: string | null = null;
+    const removeListeners: Array<() => void> = [];
+
+    const { confirmLeave } = useUnsavedChanges(
+        () => form.processing || (options.isDirty?.() ?? form.isDirty),
+        (visit) => visit === ownVisit,
+    );
+
+    const state = computed<FormFeedbackState>(() => {
+        if (form.processing) {
+            return 'loading';
+        }
+        if (failure.value) {
+            return failure.value;
+        }
+        if (Object.keys(form.errors).length > 0) {
+            return 'validation';
+        }
+        return form.recentlySuccessful ? 'success' : 'idle';
+    });
+
+    onMounted(() => {
+        removeListeners.push(
+            router.on('exception', (event) => {
+                if (isFormNetworkFailure(event.detail.exception, requestId)) {
+                    event.preventDefault();
+                    failure.value = 'network';
+                }
+            }),
+            router.on('invalid', (event) => {
+                if (
+                    matchesFormRequest(event.detail.response.config, requestId)
+                ) {
+                    event.preventDefault();
+                    failure.value = 'server';
+                }
+            }),
+        );
+    });
+
+    onUnmounted(() => removeListeners.forEach((remove) => remove()));
+
+    function submit(
+        target: UrlMethodPair,
+        visitOptions: UseFormSubmitOptions = {},
+    ): void {
+        if (form.processing) {
+            return;
+        }
+
+        const nextRequestId = crypto.randomUUID();
+        form.submit(target, {
+            ...visitOptions,
+            preserveState: true,
+            headers: {
+                ...visitOptions.headers,
+                [formRequestHeader]: nextRequestId,
+            },
+            onBefore: (visit) => {
+                if (visitOptions.onBefore?.(visit) === false) {
+                    return false;
+                }
+                ownVisit = visit;
+            },
+            onStart: (visit) => {
+                requestId = nextRequestId;
+                failure.value = null;
+                visitOptions.onStart?.(visit);
+            },
+            onError: (errors) => {
+                failure.value = 'validation';
+                return visitOptions.onError?.(errors);
+            },
+            onSuccess: (page) => {
+                failure.value = null;
+                return visitOptions.onSuccess?.(page);
+            },
+            onCancel: () => {
+                failure.value = 'cancelled';
+                visitOptions.onCancel?.();
+            },
+            onFinish: (visit) => {
+                requestId = null;
+                ownVisit = null;
+                visitOptions.onFinish?.(visit);
+            },
+        });
+    }
+
+    return { state, submit, confirmLeave };
+}
diff --git a/resources/js/composables/useUnsavedChanges.ts b/resources/js/composables/useUnsavedChanges.ts
new file mode 100644
index 0000000..23bc3a4
--- /dev/null
+++ b/resources/js/composables/useUnsavedChanges.ts
@@ -0,0 +1,42 @@
+import type { PendingVisit } from '@inertiajs/core';
+import { router } from '@inertiajs/vue3';
+import { onMounted, onUnmounted, toValue } from 'vue';
+import type { MaybeRefOrGetter } from 'vue';
+import { useLocalization } from '@/composables/useLocalization';
+
+export function useUnsavedChanges(
+    dirty: MaybeRefOrGetter<boolean>,
+    allowVisit: (visit: PendingVisit) => boolean = () => false,
+) {
+    const { t } = useLocalization();
+    let removeBeforeListener: (() => void) | undefined;
+
+    const confirmLeave = (): boolean =>
+        !toValue(dirty) || window.confirm(t('forms.leaveConfirm'));
+
+    const beforeUnload = (event: BeforeUnloadEvent): void => {
+        if (toValue(dirty)) {
+            event.preventDefault();
+            event.returnValue = '';
+        }
+    };
+
+    onMounted(() => {
+        removeBeforeListener = router.on('before', (event) => {
+            if (event.defaultPrevented || allowVisit(event.detail.visit)) {
+                return;
+            }
+
+            // Keep the original visit and its callbacks; never replay a mutation.
+            return confirmLeave();
+        });
+        window.addEventListener('beforeunload', beforeUnload);
+    });
+
+    onUnmounted(() => {
+        removeBeforeListener?.();
+        window.removeEventListener('beforeunload', beforeUnload);
+    });
+
+    return { confirmLeave };
+}
diff --git a/resources/js/lib/form-feedback.ts b/resources/js/lib/form-feedback.ts
new file mode 100644
index 0000000..1caa940
--- /dev/null
+++ b/resources/js/lib/form-feedback.ts
@@ -0,0 +1,42 @@
+export type FormFeedbackState =
+    | 'idle'
+    | 'loading'
+    | 'success'
+    | 'validation'
+    | 'network'
+    | 'server'
+    | 'cancelled';
+
+export const formRequestHeader = 'X-KanbanGit-Form-Request';
+
+function isRecord(value: unknown): value is Record<string, unknown> {
+    return typeof value === 'object' && value !== null;
+}
+
+/** Match failures to one submission, without intercepting other forms or polling. */
+export function matchesFormRequest(
+    config: unknown,
+    requestId: string | null,
+): boolean {
+    if (!requestId || !isRecord(config) || !isRecord(config.headers)) {
+        return false;
+    }
+
+    return config.headers[formRequestHeader] === requestId;
+}
+
+/** Runtime exceptions and cancellations are not network failures. */
+export function isFormNetworkFailure(
+    error: unknown,
+    requestId: string | null,
+): boolean {
+    return (
+        isRecord(error) &&
+        error.isAxiosError === true &&
+        !error.response &&
+        ['ERR_NETWORK', 'ECONNABORTED', 'ETIMEDOUT'].includes(
+            String(error.code),
+        ) &&
+        matchesFormRequest(error.config, requestId)
+    );
+}
diff --git a/resources/js/locales/en.ts b/resources/js/locales/en.ts
index 8f133c5..d8029e5 100644
--- a/resources/js/locales/en.ts
+++ b/resources/js/locales/en.ts
@@ -43,6 +43,30 @@ export const en = {
     'appearance.dark': 'Dark',
     'appearance.system': 'System',
     'common.cancel': 'Cancel',
+    'common.close': 'Close',
+    'common.retry': 'Try again',
+    'feedback.empty': 'Nothing here yet',
+    'feedback.saved': 'Changes saved',
+    'forms.saving': 'Saving changes…',
+    'forms.leaveConfirm': 'You have unsaved changes. Leave without saving?',
+    'forms.validationTitle': 'Check your entries',
+    'forms.validationDescription':
+        'The server rejected some fields. Your entries are still here. Correct the highlighted errors and save again.',
+    'forms.networkTitle': 'Connection interrupted',
+    'forms.networkDescription':
+        'Your entries are still here, but we could not confirm whether the server saved them. Check your connection and verify the result before trying again.',
+    'forms.serverTitle': 'The request could not be completed',
+    'forms.serverDescription':
+        'Your entries are still here. The server returned an unexpected response; your session may have expired. Verify the result before trying again.',
+    'forms.cancelledTitle': 'Saving was interrupted',
+    'forms.cancelledDescription':
+        'Your entries are still here. Check whether the changes were saved before trying again.',
+    'tickets.noBranches': 'No matching branches',
+    'tickets.noBranchesDescription':
+        'No matching branches were found across the linked repositories.',
+    'tickets.noPullRequests': 'No matching pull requests',
+    'tickets.noPullRequestsDescription':
+        'No matching pull requests were found across the linked repositories.',
     'common.save': 'Save',
     'common.loading': 'Loading…',
     'common.error': 'Something went wrong.',
diff --git a/resources/js/pages/projects/Ticket.vue b/resources/js/pages/projects/Ticket.vue
index 0ea2610..65d2fdb 100644
--- a/resources/js/pages/projects/Ticket.vue
+++ b/resources/js/pages/projects/Ticket.vue
@@ -1,7 +1,14 @@
 <script setup lang="ts">
-import { Form, useForm, Head, Link, usePage } from '@inertiajs/vue3';
+import {
+    Form,
+    useForm,
+    useRemember,
+    Head,
+    Link,
+    usePage,
+} from '@inertiajs/vue3';
 import { CheckCircle2, GitBranchPlus, XCircle } from 'lucide-vue-next';
-import { computed, ref, watch } from 'vue';
+import { computed, ref, toRef, unref, watch } from 'vue';
 import {
     acceptanceCriteriaToEditorState,
     buildAcceptanceCriteria,
@@ -14,6 +21,10 @@ import ProjectTicketLinkController from '@/actions/App/Http/Controllers/ProjectT
 import ProjectTicketController from '@/actions/App/Http/Controllers/ProjectTicketController';
 import Heading from '@/components/Heading.vue';
 import InputError from '@/components/InputError.vue';
+import FormFeedback from '@/components/FormFeedback.vue';
+import FeedbackState from '@/components/FeedbackState.vue';
+import { useFormProtection } from '@/composables/useFormProtection';
+import { useLocalization } from '@/composables/useLocalization';
 import TicketTreeList from '@/components/TicketTreeList.vue';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
@@ -45,6 +56,7 @@ import type { RepositoryConnectionModel } from '@/types/models/repository-connec
 import type { BreadcrumbItem, ProjectTicketPageProps } from '@/types';
 
 const props = defineProps<ProjectTicketPageProps>();
+const { t } = useLocalization();
 const page = usePage();
 const appName = String(page.props.name);
 
@@ -122,8 +134,14 @@ const breadcrumbs: BreadcrumbItem[] = [
 const acceptanceCriteriaEditorState = acceptanceCriteriaToEditorState(
     props.ticket.acceptance_criteria,
 );
-const acceptanceCriteriaChecklist = ref(
-    acceptanceCriteriaEditorState.checklist,
+const draftKey = `projects:${props.project.id}:tickets:${props.ticket.id}:edit`;
+const acceptanceCriteriaDraft = useRemember(
+    { checklist: acceptanceCriteriaEditorState.checklist },
+    `${draftKey}:checklist`,
+);
+const acceptanceCriteriaChecklist = toRef(
+    unref(acceptanceCriteriaDraft),
+    'checklist',
 );
 const savedAcceptanceCriteria = ref(
     normalizeAcceptanceCriteria(props.ticket.acceptance_criteria),
@@ -131,7 +149,7 @@ const savedAcceptanceCriteria = ref(
 const isPersistingAcceptanceCriteriaToggle = ref(false);
 const acceptanceCriteriaToggleError = ref('');
 
-const form = useForm({
+const form = useForm(draftKey, {
     acceptance_criteria: buildAcceptanceCriteria(
         acceptanceCriteriaChecklist.value,
     ),
@@ -170,6 +188,12 @@ const hasUnsavedAcceptanceCriteriaDraft = computed(
         formatChecklistLines(savedAcceptanceCriteria.value),
 );
 
+const protection = useFormProtection(form, {
+    isDirty: () =>
+        props.canEditTicket &&
+        (form.isDirty || hasUnsavedAcceptanceCriteriaDraft.value),
+});
+
 const acceptanceCriteriaError = computed(() => {
     return (
         form.errors.acceptance_criteria ??
@@ -187,10 +211,20 @@ const branchNameValidation = ref<BranchNameValidationModel | null>(null);
 const branchCreationForm = useForm<{
     branch_name: string;
     repository_connection_id: string;
-}>({
+}>(`${draftKey}:branch`, {
     branch_name: props.suggestedBranchName,
     repository_connection_id: defaultBranchRepositoryConnectionId.value,
 });
+const branchProtection = useFormProtection(branchCreationForm, {
+    isDirty: () => isCreateBranchDialogOpen.value && branchCreationForm.isDirty,
+});
+
+const updateBranchDialogOpen = (open: boolean): void => {
+    if (!open && !branchProtection.confirmLeave()) {
+        return;
+    }
+    isCreateBranchDialogOpen.value = open;
+};
 
 const selectedBranchRepositoryConnection = computed(
     (): RepositoryConnectionModel | null =>
@@ -207,6 +241,9 @@ const selectedBranchRepositoryHasPersonalAccess = computed(
 );
 
 const initializeBranchCreationForm = (): void => {
+    if (branchCreationForm.isDirty) {
+        return;
+    }
     branchCreationForm.clearErrors();
     branchCreationForm.branch_name = props.suggestedBranchName;
     branchCreationForm.repository_connection_id =
@@ -348,7 +385,7 @@ const submitBranchCreation = (): void => {
         return;
     }
 
-    branchCreationForm.submit(
+    branchProtection.submit(
         ProjectTicketBranchController.store({
             project: props.project.id,
             ticket: props.ticket.id,
@@ -482,13 +519,21 @@ const submit = (): void => {
 
     form.acceptance_criteria = buildAcceptanceCriteriaForSubmit();
 
-    form.submit(
+    protection.submit(
         ProjectTicketController.update({
             project: props.project.id,
             ticket: props.ticket.id,
         }),
         {
             preserveScroll: true,
+            onSuccess: () => {
+                savedAcceptanceCriteria.value = normalizeAcceptanceCriteria(
+                    props.ticket.acceptance_criteria,
+                );
+                acceptanceCriteriaChecklist.value = formatChecklistLines(
+                    savedAcceptanceCriteria.value,
+                );
+            },
         },
     );
 };
@@ -574,16 +619,25 @@ const formatDateTime = (value: string): string => {
 
                     <CardContent>
                         <form class="grid gap-6" @submit.prevent="submit">
+                            <FormFeedback
+                                :state="protection.state.value"
+                                @retry="submit"
+                            />
                             <div class="grid gap-2">
                                 <Label for="title">Title</Label>
                                 <Input
                                     id="title"
                                     v-model="form.title"
+                                    :invalid="Boolean(form.errors.title)"
+                                    aria-describedby="title-error"
                                     :disabled="
                                         !canEditTicket || form.processing
                                     "
                                 />
-                                <InputError :message="form.errors.title" />
+                                <InputError
+                                    id="title-error"
+                                    :message="form.errors.title"
+                                />
                             </div>
 
                             <div class="grid gap-2 md:grid-cols-2 md:gap-6">
@@ -995,7 +1049,10 @@ const formatDateTime = (value: string): string => {
                                 </CardDescription>
                             </div>
 
-                            <Dialog v-model:open="isCreateBranchDialogOpen">
+                            <Dialog
+                                :open="isCreateBranchDialogOpen"
+                                @update:open="updateBranchDialogOpen"
+                            >
                                 <Button
                                     v-if="canCreateBranches"
                                     type="button"
@@ -1023,6 +1080,12 @@ const formatDateTime = (value: string): string => {
                                         class="grid gap-4"
                                         @submit.prevent="submitBranchCreation"
                                     >
+                                        <FormFeedback
+                                            :state="
+                                                branchProtection.state.value
+                                            "
+                                            @retry="submitBranchCreation"
+                                        />
                                         <div class="grid gap-2">
                                             <Label
                                                 for="repository_connection_id"
@@ -1153,7 +1216,9 @@ const formatDateTime = (value: string): string => {
                                                 type="button"
                                                 variant="secondary"
                                                 @click="
-                                                    isCreateBranchDialogOpen = false
+                                                    updateBranchDialogOpen(
+                                                        false,
+                                                    )
                                                 "
                                             >
                                                 Cancel
@@ -1177,13 +1242,14 @@ const formatDateTime = (value: string): string => {
                         </CardHeader>
 
                         <CardContent class="space-y-4">
-                            <div
+                            <FeedbackState
                                 v-if="visibleRepositoryBranches.length === 0"
-                                class="border-border text-muted-foreground rounded-xl border border-dashed px-4 py-6 text-sm"
-                            >
-                                No matching branches were found across the
-                                linked repositories you can access.
-                            </div>
+                                state="empty"
+                                :title="t('tickets.noBranches')"
+                                :description="
+                                    t('tickets.noBranchesDescription')
+                                "
+                            />
 
                             <div v-else class="space-y-3">
                                 <div
@@ -1434,15 +1500,16 @@ const formatDateTime = (value: string): string => {
                         </CardHeader>
 
                         <CardContent class="space-y-4">
-                            <div
+                            <FeedbackState
                                 v-if="
                                     visibleRepositoryPullRequests.length === 0
                                 "
-                                class="border-border text-muted-foreground rounded-xl border border-dashed px-4 py-6 text-sm"
-                            >
-                                No matching pull requests were found across the
-                                linked repositories you can access.
-                            </div>
+                                state="empty"
+                                :title="t('tickets.noPullRequests')"
+                                :description="
+                                    t('tickets.noPullRequestsDescription')
+                                "
+                            />
 
                             <div v-else class="space-y-3">
                                 <div
diff --git a/resources/js/pages/projects/TicketCreate.vue b/resources/js/pages/projects/TicketCreate.vue
index c569f2a..dcd85af 100644
--- a/resources/js/pages/projects/TicketCreate.vue
+++ b/resources/js/pages/projects/TicketCreate.vue
@@ -1,9 +1,11 @@
 <script setup lang="ts">
-import { Head, Link, useForm } from '@inertiajs/vue3';
-import { computed, ref } from 'vue';
+import { Head, Link, useForm, useRemember } from '@inertiajs/vue3';
+import { computed, toRef, unref } from 'vue';
 import ProjectTicketController from '@/actions/App/Http/Controllers/ProjectTicketController';
 import Heading from '@/components/Heading.vue';
 import InputError from '@/components/InputError.vue';
+import FormFeedback from '@/components/FormFeedback.vue';
+import { useFormProtection } from '@/composables/useFormProtection';
 import { Badge } from '@/components/ui/badge';
 import { Button } from '@/components/ui/button';
 import {
@@ -62,9 +64,17 @@ const hasTicketMetadata =
     props.ticketPriorities.length > 0 &&
     props.ticketStatusOptions.length > 0;
 
-const acceptanceCriteriaChecklist = ref('');
+const draftKey = `projects:${props.project.id}:tickets:create`;
+const acceptanceCriteriaDraft = useRemember(
+    { checklist: '' },
+    `${draftKey}:checklist`,
+);
+const acceptanceCriteriaChecklist = toRef(
+    unref(acceptanceCriteriaDraft),
+    'checklist',
+);
 
-const form = useForm({
+const form = useForm(draftKey, {
     acceptance_criteria: buildAcceptanceCriteria(
         acceptanceCriteriaChecklist.value,
     ),
@@ -80,6 +90,10 @@ const form = useForm({
     title: '',
 });
 
+const protection = useFormProtection(form, {
+    isDirty: () => form.isDirty || acceptanceCriteriaChecklist.value !== '',
+});
+
 const acceptanceCriteriaPreviewItems = computed(() =>
     parseChecklistLines(acceptanceCriteriaChecklist.value),
 );
@@ -99,9 +113,12 @@ const submit = (): void => {
         acceptanceCriteriaChecklist.value,
     );
 
-    form.submit(ProjectTicketController.store({ project: props.project.id }), {
-        preserveScroll: true,
-    });
+    protection.submit(
+        ProjectTicketController.store({ project: props.project.id }),
+        {
+            preserveScroll: true,
+        },
+    );
 };
 
 const ticketStatusLabel = (ticketStatus: TicketStatusModel): string => {
@@ -165,17 +182,26 @@ const ticketStatusLabel = (ticketStatus: TicketStatusModel): string => {
 
                 <CardContent>
                     <form class="grid gap-6" @submit.prevent="submit">
+                        <FormFeedback
+                            :state="protection.state.value"
+                            @retry="submit"
+                        />
                         <div class="grid gap-2">
                             <Label for="title">Title</Label>
                             <Input
                                 id="title"
                                 v-model="form.title"
+                                :invalid="Boolean(form.errors.title)"
+                                aria-describedby="title-error"
                                 required
                                 autofocus
                                 :disabled="form.processing"
                                 placeholder="Implement repository sync"
                             />
-                            <InputError :message="form.errors.title" />
+                            <InputError
+                                id="title-error"
+                                :message="form.errors.title"
+                            />
                         </div>
 
                         <div
diff --git a/tests/Feature/FormFeedbackTest.php b/tests/Feature/FormFeedbackTest.php
new file mode 100644
index 0000000..bf8da51
--- /dev/null
+++ b/tests/Feature/FormFeedbackTest.php
@@ -0,0 +1,19 @@
+<?php
+
+namespace Tests\Feature;
+
+use Symfony\Component\Process\Process;
+use Tests\TestCase;
+
+class FormFeedbackTest extends TestCase
+{
+    public function test_feedback_states_and_request_failure_classification(): void
+    {
+        $process = new Process(['node', 'tests/Fixtures/form-feedback.mjs'], base_path());
+        $process->setTimeout(60);
+        $process->run();
+
+        $this->assertTrue($process->isSuccessful(), $process->getOutput().$process->getErrorOutput());
+        $this->assertStringContainsString('Form feedback behavior checks passed.', $process->getOutput());
+    }
+}
diff --git a/tests/Feature/Projects/ProjectTicketControllerTest.php b/tests/Feature/Projects/ProjectTicketControllerTest.php
index b586ccf..b262b56 100644
--- a/tests/Feature/Projects/ProjectTicketControllerTest.php
+++ b/tests/Feature/Projects/ProjectTicketControllerTest.php
@@ -248,6 +248,8 @@ class ProjectTicketControllerTest extends TestCase
      */
     public function test_ticket_details_include_matching_branches_pull_requests_and_inaccessible_repository_links(): void
     {
+        config()->set('inertia.ssr.enabled', false);
+
         Http::preventStrayRequests();
         Http::fake([
             'https://git.example.test/api/v1/repos/core-team/kanbangit/branches*' => Http::response([
diff --git a/tests/Fixtures/FeedbackPreview.vue b/tests/Fixtures/FeedbackPreview.vue
new file mode 100644
index 0000000..be59eb0
--- /dev/null
+++ b/tests/Fixtures/FeedbackPreview.vue
@@ -0,0 +1,154 @@
+<script setup>
+import { Link, useForm } from '@inertiajs/vue3';
+import { ref } from 'vue';
+import ProjectTicketController from '@/actions/App/Http/Controllers/ProjectTicketController';
+import AppearanceTabs from '@/components/AppearanceTabs.vue';
+import FeedbackState from '@/components/FeedbackState.vue';
+import FormFeedback from '@/components/FormFeedback.vue';
+import InputError from '@/components/InputError.vue';
+import { Button } from '@/components/ui/button';
+import { Input } from '@/components/ui/input';
+import {
+    Dialog,
+    DialogContent,
+    DialogDescription,
+    DialogHeader,
+    DialogTitle,
+    DialogTrigger,
+    DialogClose,
+    DialogScrollContent,
+} from '@/components/ui/dialog';
+import {
+    Sheet,
+    SheetContent,
+    SheetTitle,
+    SheetDescription,
+    SheetTrigger,
+} from '@/components/ui/sheet';
+import {
+    DropdownMenu,
+    DropdownMenuTrigger,
+    DropdownMenuContent,
+    DropdownMenuItem,
+} from '@/components/ui/dropdown-menu';
+import { useFormProtection } from '@/composables/useFormProtection';
+import { index as projectsIndex } from '@/routes/projects/index';
+
+const form = useForm('feedback-preview', { title: '' });
+const protection = useFormProtection(form);
+const dialogOpen = ref(false);
+const menuSelection = ref('');
+const submit = () =>
+    protection.submit(ProjectTicketController.store({ project: 7 }));
+</script>
+
+<template>
+    <main class="gap-column p-page mx-auto grid max-w-3xl">
+        <div class="gap-stack flex flex-wrap items-center justify-between">
+            <h1 class="text-headline">Dialogs and feedback</h1>
+            <AppearanceTabs />
+        </div>
+        <FeedbackState
+            state="empty"
+            description="New tickets will appear here."
+        />
+        <FeedbackState state="loading" />
+        <form
+            class="gap-card bg-card p-card grid rounded-md border"
+            @submit.prevent="submit"
+        >
+            <label for="title">Title</label>
+            <Input
+                id="title"
+                v-model="form.title"
+                :invalid="Boolean(form.errors.title)"
+                aria-describedby="title-error"
+            />
+            <InputError id="title-error" :message="form.errors.title" />
+            <FormFeedback :state="protection.state.value" @retry="submit" />
+            <Button type="submit" :loading="form.processing">Save draft</Button>
+            <Button type="button" variant="outline" @click="form.cancel()"
+                >Cancel request</Button
+            >
+        </form>
+        <Link :href="projectsIndex()">Leave page</Link>
+        <div class="gap-stack flex flex-wrap">
+            <Dialog v-model:open="dialogOpen">
+                <Button id="programmatic-trigger" @click="dialogOpen = true"
+                    >Open dialog</Button
+                >
+                <DialogContent>
+                    <DialogHeader
+                        ><DialogTitle>Edit details</DialogTitle
+                        ><DialogDescription
+                            >Keyboard and focus preview.</DialogDescription
+                        ></DialogHeader
+                    >
+                    <Input aria-label="Dialog title" />
+                    <Dialog>
+                        <DialogTrigger as-child
+                            ><Button>Open nested dialog</Button></DialogTrigger
+                        >
+                        <DialogContent>
+                            <DialogHeader
+                                ><DialogTitle>Nested details</DialogTitle
+                                ><DialogDescription
+                                    >Returns focus to the parent
+                                    dialog.</DialogDescription
+                                ></DialogHeader
+                            >
+                            <DialogClose as-child
+                                ><Button>Done</Button></DialogClose
+                            >
+                        </DialogContent>
+                    </Dialog>
+                    <DialogClose as-child
+                        ><Button variant="outline">Cancel</Button></DialogClose
+                    >
+                </DialogContent>
+            </Dialog>
+            <Dialog>
+                <DialogTrigger as-child
+                    ><Button>Open long dialog</Button></DialogTrigger
+                >
+                <DialogScrollContent>
+                    <DialogHeader
+                        ><DialogTitle>Long details</DialogTitle
+                        ><DialogDescription
+                            >Scrollable content on small
+                            screens.</DialogDescription
+                        ></DialogHeader
+                    >
+                    <p v-for="item in 30" :key="item">Detail {{ item }}</p>
+                    <DialogClose as-child
+                        ><Button>Finish reading</Button></DialogClose
+                    >
+                </DialogScrollContent>
+            </Dialog>
+            <Sheet>
+                <SheetTrigger as-child
+                    ><Button>Open sheet</Button></SheetTrigger
+                >
+                <SheetContent class="p-page">
+                    <SheetTitle>Sheet details</SheetTitle
+                    ><SheetDescription
+                        >Focus returns to the trigger.</SheetDescription
+                    >
+                    <Input aria-label="Sheet title" />
+                </SheetContent>
+            </Sheet>
+            <DropdownMenu>
+                <DropdownMenuTrigger as-child
+                    ><Button>Open actions</Button></DropdownMenuTrigger
+                >
+                <DropdownMenuContent>
+                    <DropdownMenuItem disabled>Unavailable</DropdownMenuItem>
+                    <DropdownMenuItem @select="menuSelection = 'selected'"
+                        >Select action</DropdownMenuItem
+                    >
+                </DropdownMenuContent>
+            </DropdownMenu>
+            <span role="status">{{ menuSelection }}</span>
+        </div>
+    </main>
+</template>
diff --git a/tests/Fixtures/feedback-browser.mjs b/tests/Fixtures/feedback-browser.mjs
new file mode 100644
index 0000000..e46bb1b
--- /dev/null
+++ b/tests/Fixtures/feedback-browser.mjs
@@ -0,0 +1,404 @@
+import assert from 'node:assert/strict';
+import process from 'node:process';
+
+const { chromium } = await import(
+    process.env.PLAYWRIGHT_MODULE ?? 'playwright'
+);
+const browser = await chromium.launch({ channel: 'chrome', headless: true });
+const base = 'http://127.0.0.1:4176';
+const context = await browser.newContext({
+    viewport: { width: 1280, height: 900 },
+});
+const page = await context.newPage();
+page.setDefaultTimeout(10000);
+const errors = [];
+page.on('pageerror', (error) => errors.push(error.message));
+const state = (value) =>
+    page
+        .locator(`[data-form-state="${value}"]`)
+        .first()
+        .waitFor({ state: 'visible' });
+const setResult = (value) =>
+    context.addCookies([{ name: 'feedback_test_result', value, url: base }]);
+const verify = async (condition) => {
+    assert.equal(await condition(), true);
+};
+const confirmNavigation = (accepted) =>
+    page.once('dialog', (dialog) =>
+        accepted ? dialog.accept() : dialog.dismiss(),
+    );
+
+try {
+    await page.goto(`${base}/feedback`);
+    await page.getByLabel('Title', { exact: true }).fill('Unsaved draft');
+    await verify(() =>
+        page.evaluate(() => {
+            const event = new Event('beforeunload', { cancelable: true });
+            window.dispatchEvent(event);
+            return event.defaultPrevented;
+        }),
+    );
+    confirmNavigation(false);
+    await page.getByRole('link', { name: 'Leave page' }).click();
+    assert.equal(new URL(page.url()).pathname, '/feedback');
+    assert.equal(
+        await page.getByLabel('Title', { exact: true }).inputValue(),
+        'Unsaved draft',
+    );
+
+    await setResult('validation');
+    await page.getByRole('button', { name: 'Save draft' }).click();
+    await state('validation');
+    assert.equal(
+        await page.getByLabel('Title', { exact: true }).inputValue(),
+        'Unsaved draft',
+    );
+    assert.equal(
+        await page
+            .getByLabel('Title', { exact: true })
+            .getAttribute('aria-invalid'),
+        'true',
+    );
+    assert.equal(
+        await page.getByRole('button', { name: 'Try again' }).count(),
+        0,
+    );
+
+    let failedRequests = 0;
+    await page.route('**/projects/7/tickets', (route) => {
+        failedRequests++;
+        return route.abort('failed');
+    });
+    await page.getByRole('button', { name: 'Save draft' }).click();
+    await state('network');
+    await page.waitForFunction(
+        () =>
+            document.activeElement?.getAttribute('data-form-state') ===
+            'network',
+    );
+    assert.equal(
+        await page.getByLabel('Title', { exact: true }).inputValue(),
+        'Unsaved draft',
+    );
+    assert.equal(failedRequests, 1);
+    await page.unroute('**/projects/7/tickets');
+    await setResult('server');
+    await page.getByRole('button', { name: 'Try again' }).click();
+    await state('server');
+    assert.equal(
+        await page.getByLabel('Title', { exact: true }).inputValue(),
+        'Unsaved draft',
+    );
+
+    await setResult('success');
+    let pending;
+    let submissions = 0;
+    await page.route('**/projects/7/tickets', (route) => {
+        submissions++;
+        pending = route;
+    });
+    await page.getByRole('button', { name: 'Try again' }).click();
+    await state('loading');
+    await verify(() =>
+        page.evaluate(() => {
+            const event = new CustomEvent('inertia:exception', {
+                cancelable: true,
+                detail: { exception: new Error('Unrelated runtime error') },
+            });
+            document.dispatchEvent(event);
+            return !event.defaultPrevented;
+        }),
+    );
+    await verify(() =>
+        page.getByRole('button', { name: 'Save draft' }).isDisabled(),
+    );
+    await page.locator('form').evaluate((form) => form.requestSubmit());
+    assert.equal(submissions, 1);
+    await page.getByRole('button', { name: 'Cancel request' }).click();
+    await state('cancelled');
+    assert.equal(
+        await page.getByLabel('Title', { exact: true }).inputValue(),
+        'Unsaved draft',
+    );
+    await pending.abort();
+    await page.unroute('**/projects/7/tickets');
+    await page.getByRole('button', { name: 'Try again' }).click();
+    await state('success');
+    await verify(() =>
+        page.evaluate(() => {
+            const event = new Event('beforeunload', { cancelable: true });
+            window.dispatchEvent(event);
+            return !event.defaultPrevented;
+        }),
+    );
+
+    await page.getByLabel('Title', { exact: true }).fill('History draft');
+    confirmNavigation(true);
+    await page.getByRole('link', { name: 'Leave page' }).click();
+    await page.getByRole('heading', { name: 'Destination' }).waitFor();
+    await page.goBack();
+    await page.getByLabel('Title', { exact: true }).waitFor();
+    assert.equal(
+        await page.getByLabel('Title', { exact: true }).inputValue(),
+        'History draft',
+    );
+    await page.goForward();
+    await page.getByRole('heading', { name: 'Destination' }).waitFor();
+    await page.goBack();
+    await page.getByLabel('Title', { exact: true }).waitFor();
+    assert.equal(
+        await page.getByLabel('Title', { exact: true }).inputValue(),
+        'History draft',
+    );
+    // Native history cannot be cancelled; remembered state preserves the draft.
+    await page.getByRole('button', { name: 'Save draft' }).click();
+    await state('success');
+
+    for (const width of [1280, 390]) {
+        await page.setViewportSize({ width, height: 844 });
+        for (const theme of ['Light', 'Dark']) {
+            console.log(`Checking dialogs: ${width}px, ${theme}`);
+            await page
+                .getByRole('button', { name: theme, exact: true })
+                .click();
+            await page.waitForFunction(
+                (dark) =>
+                    document.documentElement.classList.contains('dark') ===
+                    dark,
+                theme === 'Dark',
+            );
+            const opener = page.getByRole('button', {
+                name: 'Open dialog',
+                exact: true,
+            });
+            await opener.focus();
+            await page.keyboard.press('Enter');
+            await page.getByRole('dialog', { name: 'Edit details' }).waitFor();
+            await page
+                .getByRole('dialog', { name: 'Edit details' })
+                .evaluate((element) =>
+                    Promise.all(
+                        [
+                            element,
+                            ...document.querySelectorAll(
+                                '[data-slot="dialog-overlay"]',
+                            ),
+                        ]
+                            .flatMap((surface) => surface.getAnimations())
+                            .map((animation) => animation.finished),
+                    ),
+                );
+            assert.equal(
+                await page
+                    .getByRole('dialog', { name: 'Edit details' })
+                    .evaluate((element) => getComputedStyle(element).opacity),
+                '1',
+            );
+            await page.waitForFunction(() =>
+                document.activeElement?.closest('[role="dialog"]'),
+            );
+            for (let step = 0; step < 7; step++) {
+                await page.keyboard.press('Tab');
+                await verify(() =>
+                    page.evaluate(() =>
+                        Boolean(
+                            document.activeElement?.closest('[role="dialog"]'),
+                        ),
+                    ),
+                );
+            }
+            await page.keyboard.press('Shift+Tab');
+            await verify(() =>
+                page.evaluate(() =>
+                    Boolean(document.activeElement?.closest('[role="dialog"]')),
+                ),
+            );
+            await page.screenshot({
+                path: `/private/tmp/kan20-dialog-${width}-${theme.toLowerCase()}.png`,
+            });
+            await page
+                .getByRole('button', { name: 'Open nested dialog' })
+                .click();
+            await page
+                .getByRole('dialog', { name: 'Nested details' })
+                .waitFor();
+            await page.keyboard.press('Escape');
+            await page
+                .getByRole('dialog', { name: 'Nested details' })
+                .waitFor({ state: 'hidden' });
+            await page.waitForFunction(() =>
+                document.activeElement?.textContent.includes(
+                    'Open nested dialog',
+                ),
+            );
+            await page.keyboard.press('Escape');
+            await page
+                .getByRole('dialog', { name: 'Edit details' })
+                .waitFor({ state: 'hidden' });
+            await page.waitForFunction(
+                () => document.activeElement?.id === 'programmatic-trigger',
+            );
+            await opener.click();
+            await page
+                .getByRole('dialog', { name: 'Edit details' })
+                .getByRole('button', { name: 'Cancel', exact: true })
+                .click();
+            await page.waitForFunction(
+                () => document.activeElement?.id === 'programmatic-trigger',
+            );
+
+            const longOpener = page.getByRole('button', {
+                name: 'Open long dialog',
+            });
+            await longOpener.click();
+            const longDialog = page.getByRole('dialog', {
+                name: 'Long details',
+            });
+            await longDialog.waitFor();
+            const box = await longDialog.boundingBox();
+            assert.ok(box.x >= 0 && box.x + box.width <= width);
+            await longDialog
+                .getByRole('button', { name: 'Finish reading' })
+                .click();
+            await longDialog.waitFor({ state: 'hidden' });
+            await page.waitForFunction(() =>
+                document.activeElement?.textContent.includes(
+                    'Open long dialog',
+                ),
+            );
+
+            await page.getByRole('button', { name: 'Open sheet' }).click();
+            await page.getByRole('dialog', { name: 'Sheet details' }).waitFor();
+            await page.keyboard.press('Escape');
+            await page
+                .getByRole('dialog', { name: 'Sheet details' })
+                .waitFor({ state: 'hidden' });
+            await page.waitForFunction(() =>
+                document.activeElement?.textContent.includes('Open sheet'),
+            );
+
+            const actions = page.getByRole('button', { name: 'Open actions' });
+            await actions.focus();
+            await page.keyboard.press('Enter');
+            await page.getByRole('menu').waitFor();
+            await page
+                .getByRole('menu')
+                .evaluate((element) =>
+                    Promise.all(
+                        element
+                            .getAnimations()
+                            .map((animation) => animation.finished),
+                    ),
+                );
+            const menuItem = await page
+                .getByRole('menuitem', { name: 'Select action' })
+                .boundingBox();
+            assert.ok(menuItem.height >= 44);
+            await page.keyboard.press('ArrowDown');
+            await page.keyboard.press('Enter');
+            await page.getByRole('menu').waitFor({ state: 'hidden' });
+            await page.waitForFunction(() =>
+                document.activeElement?.textContent.includes('Open actions'),
+            );
+            assert.equal(
+                await page.getByText('selected', { exact: true }).count(),
+                1,
+            );
+            await verify(() =>
+                page.evaluate(
+                    () => document.documentElement.scrollWidth <= innerWidth,
+                ),
+            );
+            await page.screenshot({
+                path: `/private/tmp/kan20-feedback-${width}-${theme.toLowerCase()}.png`,
+                fullPage: true,
+            });
+        }
+    }
+
+    // Exercise the real ticket pages as well as the isolated components.
+    await page.goto(`${base}/projects/7/tickets/create`);
+    await page.locator('#title').fill('New ticket draft');
+    await page.locator('#description').fill('Keep this description');
+    await page
+        .locator('#acceptance_criteria_checklist')
+        .fill('[ ] Keep this checklist');
+    await setResult('validation');
+    await page.locator('form button[type="submit"]').first().click();
+    await state('validation');
+    assert.equal(
+        await page.locator('#acceptance_criteria_checklist').inputValue(),
+        '[ ] Keep this checklist',
+    );
+    await page.route('**/projects/7/tickets', (route) => route.abort('failed'));
+    await page.locator('form button[type="submit"]').first().click();
+    await state('network');
+    assert.equal(await page.locator('#title').inputValue(), 'New ticket draft');
+    assert.equal(
+        await page.locator('#description').inputValue(),
+        'Keep this description',
+    );
+    await page.unroute('**/projects/7/tickets');
+    confirmNavigation(true);
+    await page
+        .getByRole('link', { name: 'Back to backlog', exact: true })
+        .first()
+        .click();
+    await page.getByRole('heading', { name: 'Destination' }).waitFor();
+    await page.goBack();
+    await page.locator('#title').waitFor();
+    assert.equal(await page.locator('#title').inputValue(), 'New ticket draft');
+    assert.equal(
+        await page.locator('#acceptance_criteria_checklist').inputValue(),
+        '[ ] Keep this checklist',
+    );
+    await setResult('success');
+    await page.locator('form button[type="submit"]').first().click();
+    await page.getByRole('heading', { name: 'Destination' }).waitFor();
+
+    await page.goto(`${base}/projects/7/tickets/31`);
+    await page.locator('#title').fill('Updated ticket draft');
+    await page
+        .locator('#acceptance_criteria_checklist')
+        .fill('[ ] Edited checklist');
+    await setResult('server');
+    await page.locator('form button[type="submit"]').first().click();
+    await state('server');
+    assert.equal(
+        await page.locator('#title').inputValue(),
+        'Updated ticket draft',
+    );
+    assert.equal(
+        await page.locator('#acceptance_criteria_checklist').inputValue(),
+        '[ ] Edited checklist',
+    );
+    await setResult('success');
+    await page.getByRole('button', { name: 'Try again' }).click();
+    await state('success');
+    await verify(() =>
+        page.evaluate(() => {
+            const event = new Event('beforeunload', { cancelable: true });
+            window.dispatchEvent(event);
+            return !event.defaultPrevented;
+        }),
+    );
+    assert.deepEqual(errors, []);
+    console.log(
+        'Feedback browser behavior checks passed (desktop/mobile, light/dark, real ticket forms).',
+    );
+} catch (error) {
+    console.error(
+        'Active element:',
+        await page.evaluate(() =>
+            document.activeElement?.outerHTML.slice(0, 500),
+        ),
+    );
+    console.error('Browser errors:', errors);
+    await page.screenshot({
+        path: '/private/tmp/kan20-feedback-failure.png',
+        fullPage: true,
+    });
+    throw error;
+} finally {
+    await browser.close();
+}
diff --git a/tests/Fixtures/feedback-preview.mjs b/tests/Fixtures/feedback-preview.mjs
new file mode 100644
index 0000000..6843547
--- /dev/null
+++ b/tests/Fixtures/feedback-preview.mjs
@@ -0,0 +1,26 @@
+import { createApp, h } from 'vue';
+import { createInertiaApp, Link } from '@inertiajs/vue3';
+import '../../resources/css/app.css';
+import FeedbackPreview from './FeedbackPreview.vue';
+import TicketCreate from '../../resources/js/pages/projects/TicketCreate.vue';
+import Ticket from '../../resources/js/pages/projects/Ticket.vue';
+import { createAppearance } from '../../resources/js/composables/useAppearance';
+import { createLocalization } from '../../resources/js/lib/localization';
+
+const Destination = {
+    render: () =>
+        h('main', [
+            h('h1', 'Destination'),
+            h(Link, { href: '/feedback' }, () => 'Feedback preview'),
+        ]),
+};
+createInertiaApp({
+    resolve: (name) =>
+        ({ FeedbackPreview, TicketCreate, Ticket, Destination })[name],
+    setup: ({ el, App, props, plugin }) =>
+        createApp({ render: () => h(App, props) })
+            .use(plugin)
+            .use(createLocalization())
+            .use(createAppearance())
+            .mount(el),
+});
diff --git a/tests/Fixtures/feedback-server.mjs b/tests/Fixtures/feedback-server.mjs
new file mode 100644
index 0000000..688cab6
--- /dev/null
+++ b/tests/Fixtures/feedback-server.mjs
@@ -0,0 +1,159 @@
+import { fileURLToPath } from 'node:url';
+import vue from '@vitejs/plugin-vue';
+import tailwind from '@tailwindcss/vite';
+import { createServer } from 'vite';
+
+const server = await createServer({
+    configFile: false,
+    plugins: [vue(), tailwind()],
+    resolve: {
+        alias: {
+            '@': fileURLToPath(new URL('../../resources/js', import.meta.url)),
+        },
+    },
+    server: { host: '127.0.0.1', port: 4176, strictPort: true, hmr: false },
+    appType: 'custom',
+});
+const project = {
+    id: 7,
+    name: 'Engineering',
+    key: 'ENG',
+    show_author: true,
+    show_story_points: true,
+};
+const ticketType = { id: 1, name: 'Task', is_parent: false };
+const priority = { id: 1, name: 'Medium' };
+const status = { id: 1, name: 'To do', board_column: null };
+let ticket = {
+    id: 31,
+    ticket_key: 'ENG-31',
+    title: 'Existing ticket',
+    description: '',
+    ticket_type: ticketType,
+    ticket_type_id: 1,
+    ticket_priority: priority,
+    ticket_priority_id: 1,
+    ticket_status: status,
+    is_blocked: false,
+    story_points: 0,
+    acceptance_criteria: [],
+    field_values: [],
+    worklog_entries: [],
+};
+
+server.middlewares.use(async (request, response, next) => {
+    const url = new URL(request.url, 'http://localhost');
+    if (!/^\/(feedback|projects|dashboard)(\/|$)/.test(url.pathname)) {
+        return next();
+    }
+    let path = url.pathname;
+    const mutation = request.method !== 'GET';
+    const result =
+        request.headers.cookie?.match(/feedback_test_result=(\w+)/)?.[1] ??
+        'success';
+    if (path.endsWith('/branches/validate')) {
+        response.setHeader('Content-Type', 'application/json');
+        response.end(JSON.stringify({ is_valid: true, message: 'Available' }));
+        return;
+    }
+    if (mutation) {
+        if (result === 'server') {
+            response.statusCode = 503;
+            response.setHeader('Content-Type', 'text/html');
+            response.end('<h1>Temporarily unavailable</h1>');
+            return;
+        }
+        path = new URL(request.headers.referer).pathname;
+        let body = '';
+        for await (const chunk of request) {
+            body += chunk;
+        }
+        if (path === '/projects/7/tickets/31' && result === 'success') {
+            ticket = { ...ticket, ...JSON.parse(body) };
+        }
+        if (path === '/projects/7/tickets/create' && result === 'success') {
+            path = '/projects/7/backlog';
+        }
+    }
+    const page = {
+        component:
+            path === '/feedback'
+                ? 'FeedbackPreview'
+                : path.endsWith('/tickets/create')
+                  ? 'TicketCreate'
+                  : path === '/projects/7/tickets/31'
+                    ? 'Ticket'
+                    : 'Destination',
+        url: path,
+        version: null,
+        clearHistory: false,
+        encryptHistory: false,
+        props: {
+            name: 'KanbanGit',
+            sidebarOpen: true,
+            auth: {
+                permissions: {
+                    globalAdmin: true,
+                    projectCreate: true,
+                    canManageTeams: true,
+                },
+                user: {
+                    id: 1,
+                    name: 'Alex Morgan',
+                    email: 'alex@example.test',
+                    avatar: null,
+                },
+            },
+            navigation: {
+                project: {
+                    ...project,
+                    canManage: true,
+                    canCreateTickets: true,
+                },
+            },
+            errors:
+                mutation && result === 'validation'
+                    ? { title: 'Use a different title.' }
+                    : {},
+            project,
+            source: 'backlog',
+            defaultTicketStatusId: 1,
+            ticketTypes: [ticketType],
+            ticketPriorities: [priority],
+            ticketStatusOptions: [status],
+            users: [],
+            parentTicketOptions: [],
+            canEditTicket: true,
+            canManageProject: true,
+            childTicketTree: [],
+            linkedTickets: [],
+            repositoryBranches: [],
+            repositoryPullRequests: [],
+            suggestedBranchName: 'feature/ENG-31-existing-ticket',
+            ticket,
+            ticketFieldDefinitions: [],
+            ticketLinkOptions: [],
+            ticketLinkTypes: [],
+        },
+    };
+    response.setHeader('Vary', 'X-Inertia');
+    if (request.headers['x-inertia']) {
+        response.setHeader('X-Inertia', 'true');
+        response.setHeader('Content-Type', 'application/json');
+        response.end(JSON.stringify(page));
+        return;
+    }
+    const escapedPage = JSON.stringify(page)
+        .replaceAll('&', '&amp;')
+        .replaceAll('"', '&quot;')
+        .replaceAll('<', '&lt;');
+    const html =
+        '<!doctype html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1"></head><body><div id="app" data-page="' +
+        escapedPage +
+        '"></div><script type="module" src="/tests/Fixtures/feedback-preview.mjs"></script></body></html>';
+    response.setHeader('Content-Type', 'text/html');
+    response.end(await server.transformIndexHtml(request.url, html));
+});
+
+await server.listen();
+console.log('Feedback fixture ready at http://127.0.0.1:4176/feedback');
diff --git a/tests/Fixtures/form-feedback.mjs b/tests/Fixtures/form-feedback.mjs
new file mode 100644
index 0000000..10aa11b
--- /dev/null
+++ b/tests/Fixtures/form-feedback.mjs
@@ -0,0 +1,129 @@
+import assert from 'node:assert/strict';
+import { fileURLToPath } from 'node:url';
+import vue from '@vitejs/plugin-vue';
+import { createServer } from 'vite';
+import { createSSRApp, h } from 'vue';
+import { renderToString } from 'vue/server-renderer';
+
+const server = await createServer({
+    configFile: false,
+    plugins: [vue()],
+    resolve: {
+        alias: {
+            '@': fileURLToPath(new URL('../../resources/js', import.meta.url)),
+        },
+    },
+    server: { middlewareMode: true, hmr: false, watch: null },
+    appType: 'custom',
+});
+
+try {
+    const { isFormNetworkFailure, matchesFormRequest, formRequestHeader } =
+        await server.ssrLoadModule('/resources/js/lib/form-feedback.ts');
+    const config = { headers: { [formRequestHeader]: 'submission-a' } };
+    for (const code of ['ERR_NETWORK', 'ECONNABORTED', 'ETIMEDOUT']) {
+        assert.equal(
+            isFormNetworkFailure(
+                { isAxiosError: true, code, config },
+                'submission-a',
+            ),
+            true,
+        );
+    }
+    for (const error of [
+        null,
+        new Error('Render failed'),
+        { code: 'ERR_NETWORK', config },
+        { isAxiosError: true, code: 'ERR_CANCELED', config },
+        {
+            isAxiosError: true,
+            code: 'ERR_NETWORK',
+            config,
+            response: { status: 500 },
+        },
+        { isAxiosError: true, code: 'ERR_NETWORK', config: {} },
+    ]) {
+        assert.equal(isFormNetworkFailure(error, 'submission-a'), false);
+    }
+    assert.equal(
+        isFormNetworkFailure(
+            { isAxiosError: true, code: 'ERR_NETWORK', config },
+            'submission-b',
+        ),
+        false,
+    );
+    assert.equal(matchesFormRequest(config, null), false);
+    assert.equal(matchesFormRequest(config, 'submission-a'), true);
+    assert.equal(matchesFormRequest(undefined, 'submission-a'), false);
+
+    const { createLocalization } = await server.ssrLoadModule(
+        '/resources/js/lib/localization.ts',
+    );
+    const { en } = await server.ssrLoadModule('/resources/js/locales/en.ts');
+    const { default: FeedbackState } = await server.ssrLoadModule(
+        '/resources/js/components/FeedbackState.vue',
+    );
+    const { default: FormFeedback } = await server.ssrLoadModule(
+        '/resources/js/components/FormFeedback.vue',
+    );
+    const { default: InputError } = await server.ssrLoadModule(
+        '/resources/js/components/InputError.vue',
+    );
+    const localization = createLocalization(
+        { locale: 'de' },
+        {
+            de: {
+                ...en,
+                'common.retry': 'Erneut versuchen',
+                'feedback.empty': 'Noch keine Einträge',
+            },
+        },
+    );
+    const render = (component, props) =>
+        renderToString(
+            createSSRApp({ render: () => h(component, props) }).use(
+                localization,
+            ),
+        );
+    assert.match(
+        await render(FeedbackState, { state: 'empty' }),
+        /Noch keine Einträge/,
+    );
+    const loading = await render(FormFeedback, { state: 'loading' });
+    assert.match(loading, /role="status"/);
+    assert.match(loading, /aria-busy="true"/);
+    assert.match(loading, /motion-reduce:animate-none/);
+    assert.doesNotMatch(loading, /<button/);
+    const validation = await render(FormFeedback, { state: 'validation' });
+    assert.match(validation, /role="alert"/);
+    assert.match(validation, /Check your entries/);
+    assert.doesNotMatch(validation, /<button/);
+    for (const state of ['network', 'server', 'cancelled']) {
+        const html = await render(FormFeedback, { state });
+        assert.match(html, /Erneut versuchen/);
+        assert.match(html, /type="button"/);
+        assert.match(html, /role="alert"/);
+    }
+    assert.match(
+        await render(FormFeedback, { state: 'network' }),
+        /Connection interrupted/,
+    );
+    assert.match(
+        await render(FormFeedback, { state: 'server' }),
+        /unexpected response/,
+    );
+    assert.match(
+        await render(FormFeedback, { state: 'success' }),
+        /Changes saved/,
+    );
+    assert.doesNotMatch(await render(FormFeedback, { state: 'idle' }), /role=/);
+    const fieldError = await render(InputError, {
+        message: '<script>alert(1)</script>',
+    });
+    assert.match(fieldError, /role="alert"/);
+    assert.match(fieldError, /text-destructive/);
+    assert.doesNotMatch(fieldError, /<script>/);
+    console.log('Form feedback behavior checks passed.');
+} finally {
+    await server.close();
+}