Initial import: shopdb-flask multi-site asset platform

Flask + Vue rewrite of the classic-ASP shopdb, built as a plugin
framework so sister GE Aerospace sites can adopt it. Product version
0.7.0-pre-0.8.0, plugin contract 0.11.0, 966 backend tests.

Key entry points:
- docs/INSTALL-WINDOWS-IIS.md - tested Windows + IIS install runbook
  (own-site and subpath deployment methods)
- docs/PILOT-DEPLOY.md - production pilot: stand up + import + verify
- docs/IMPORT-API.md - schema-agnostic legacy data import contract
- scripts/site_imports/wjf/ - West Jefferson reference import loader
- docs/adr/ - twelve accepted architecture decision records

frontend/src/components/EmailReportButton.vue

@@ -0,0 +1,53 @@
+<template>
+  <button class="btn btn-secondary" :disabled="sending" @click="emailReport">
+    {{ sending ? 'Sending...' : 'Email report' }}
+  </button>
+</template>
+
+<script setup>
+import { ref } from 'vue'
+import { reportsApi } from '../api'
+import { useToast } from '../composables/toast'
+import { apiError } from '../utils/apiError'
+
+// On-demand report delivery. Emails the given rows as an HTML table to the
+// site's Alert Recipients (or an explicit `to`). Automatic/scheduled sending is
+// out of scope for this app; point an external cron at POST /api/reports/email
+// with an API token to automate.
+const props = defineProps({
+  subject: { type: String, required: true },
+  columns: { type: Array, required: true },
+  rows: { type: Array, required: true },
+  intro: { type: String, default: '' },
+  to: { type: String, default: '' },
+})
+
+const toast = useToast()
+const sending = ref(false)
+
+async function emailReport() {
+  sending.value = true
+  try {
+    const payload = {
+      subject: props.subject,
+      columns: props.columns,
+      rows: props.rows,
+      intro: props.intro,
+    }
+    if (props.to) payload.to = props.to
+    const response = await reportsApi.email(payload)
+    const result = response.data?.data || {}
+    if (result.sent) {
+      toast.success('Report emailed.')
+    } else if (result.error) {
+      toast.error(`Report email failed: ${result.error}`)
+    } else {
+      toast.info(response.data?.message || 'Email is not configured.')
+    }
+  } catch (event) {
+    toast.error(apiError(event, 'Failed to email report'))
+  } finally {
+    sending.value = false
+  }
+}
+</script>