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

plugins/measuringtools/manifest.json

@@ -0,0 +1,14 @@
+{
+  "name": "measuringtools",
+  "display_name": "Measuring Tools",
+  "version": "1.0.0",
+  "description": "Metrology and inspection instruments (gauges, calipers, thread gages, bore gages) with a calibration lifecycle and derived calibration status.",
+  "author": "ShopDB Team",
+  "dependencies": [],
+  "core_version": ">=0.6.0,<1.0.0",
+  "api_prefix": "/api/measuringtools",
+  "default_enabled": false,
+  "provides": {
+    "features": ["measuring-tools", "calibration-tracking"]
+  }
+}