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/src/App.tsx

@@ -4,10 +4,13 @@ import { Layout } from "./components/Layout";
 import { RequireAuth } from "./components/RequireAuth";
 import { AboutPage } from "./pages/AboutPage";
 import { HomePage } from "./pages/HomePage";
+import { PacketPage } from "./packet/PacketPage";
 import { NotFoundPage } from "./pages/NotFoundPage";
 import { SignInPage } from "./pages/SignInPage";
 import { AccountPage } from "./screens/account/AccountPage";
-import { ScreenRoute } from "./screens/ScreenRoute";
+import { ProjectPage } from "./screens/clerical/ProjectPage";
+import { UnitPage } from "./screens/clerical/UnitPage";
+import { RequireScreen, ScreenRoute } from "./screens/ScreenRoute";
 
 /** Route table. Exported apart from the router so tests can mount it in a MemoryRouter. */
 export function AppRoutes() {
@@ -20,6 +23,23 @@ export function AppRoutes() {
         <Route element={<RequireAuth />}>
           <Route path="account" element={<AccountPage />} />
           <Route path=":screen" element={<ScreenRoute />} />
+          <Route
+            path="clerical/projects/:projectId"
+            element={
+              <RequireScreen screen="clerical">
+                <ProjectPage />
+              </RequireScreen>
+            }
+          />
+          <Route
+            path="clerical/units/:unitId"
+            element={
+              <RequireScreen screen="clerical">
+                <UnitPage />
+              </RequireScreen>
+            }
+          />
+          <Route path="packets/:id" element={<PacketPage />} />
         </Route>
         <Route path="*" element={<NotFoundPage />} />
       </Route>