feat: add one-click nudge system with popover, throttling, and email notifications (Story 3.2)

Add NudgeController with 1-hour throttling per declaration, NudgePopover component
on declarations index and dashboard, shadcn-vue popover primitives, and per-declaration
nudge tracking. Owners/managers can nudge assigned workers with one click.
Includes 10 feature tests covering authorization, throttling, and cache invalidation.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

resources/js/components/ui/popover/Popover.vue

@@ -0,0 +1,19 @@
+<script setup lang="ts">
+import type { PopoverRootEmits, PopoverRootProps } from "reka-ui"
+import { PopoverRoot, useForwardPropsEmits } from "reka-ui"
+
+const props = defineProps<PopoverRootProps>()
+const emits = defineEmits<PopoverRootEmits>()
+
+const forwarded = useForwardPropsEmits(props, emits)
+</script>
+
+<template>
+  <PopoverRoot
+    v-slot="slotProps"
+    data-slot="popover"
+    v-bind="forwarded"
+  >
+    <slot v-bind="slotProps" />
+  </PopoverRoot>
+</template>