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/composables/setupState.js

@@ -0,0 +1,28 @@
+// Tracks whether first-run setup is complete, so the app can steer a fresh
+// admin into the /setup wizard. Defaults to "complete" so the wizard never
+// flashes before the real value loads.
+import { ref } from 'vue'
+import { settingsApi } from '../api'
+
+export const setupComplete = ref(true)
+// Session-only: a fresh admin who clicks "Skip for now" is not nagged again
+// until the next login/reload.
+export const setupSkipped = ref(false)
+const loaded = ref(false)
+
+export function isSetupLoaded() {
+  return loaded.value
+}
+
+export async function refreshSetupState() {
+  try {
+    const response = await settingsApi.get('setup_complete')
+    const value = response.data?.data?.value
+    setupComplete.value = value === true || value === 'true'
+  } catch (err) {
+    // If we cannot read it, assume complete so we do not trap the user.
+    setupComplete.value = true
+  }
+  loaded.value = true
+  return setupComplete.value
+}