Phase 2: core domain, policy engine, packet API, Clerical screen

Migration 0003: projects, aliases, renumbers, units, packets and every child table,
change orders, assets, documents, ITPs, station limits, department weld flag.
Policy package: Principal, PacketState, Action rules, custody, preconditions,
CO hold, order of checks, can/blocked/holder on reads. docs/POLICY.md with the
tightenings table for Seth. Write pipeline: FOR UPDATE, CAS on status and dept,
If-Match row versions, server-assigned numbers, field CAS, version bump, packet
log, audit, NOTIFY, signatures, IT reasons, filed lock and HMAC seal.
API: /api/packets (header, transitions, work orders, pages, docs, move, remove,
BOM, shorts, welds, heat tags, heat table, stage, checklist, clock, warehouse
stage, Q.C., change orders, log, seal), /api/projects, /api/units, /api/assets,
/_blob. Frontend: Clerical home, projects and units, packet page with pdf.js
and QR codes, hand draft, heat map, send to warehouse, department or Q.C.
Tests: policy matrix, API, concurrency, schema, projects; Playwright Clerical
draft scenario. Verified on docker-1 with the CI stack and the Samba DC.

Co-Authored-By: Claude Fable 5.1 <[email protected]>

frontend/package.json

@@ -15,6 +15,8 @@
     "@fontsource/barlow-condensed": "5.3.0",
     "@fontsource/ibm-plex-mono": "5.3.0",
     "@fontsource/ibm-plex-sans": "5.3.0",
+    "pdfjs-dist": "6.3.289",
+    "qrcode": "1.5.4",
     "react": "18.3.1",
     "react-dom": "18.3.1",
     "react-router": "7.18.4"
@@ -25,6 +27,7 @@
     "@testing-library/jest-dom": "6.10.0",
     "@testing-library/react": "16.3.3",
     "@types/node": "22.20.5",
+    "@types/qrcode": "1.5.6",
     "@types/react": "18.3.31",
     "@types/react-dom": "18.3.7",
     "@vitejs/plugin-react": "4.7.0",