feat(dx): gen:context generator (WP-44)

npm run gen:context scaffolds a bounded context: folders + starter page, the @<ctx>/*
tsconfig alias, a dependency-cruiser boundary entry, and a lazy authGuard route.

Refactors .dependency-cruiser.js's per-context contextRule calls into a single
CONTEXT_ALLOWED map that every rule derives from, so adding a context is really one
config entry (verified behavior-preserving: same dep:check counts, same graph output).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

plopfile.mjs

@@ -6,7 +6,8 @@
  * Generators here are the pure-TS patterns (no Angular-template escaping): value objects and
  * form/wizard state machines. The UI-component and bff-endpoint patterns stay skill-driven —
  * they span the template `{{ }}` syntax / the C# backend + `gen:api` regen, where a generator
- * adds little over the recipe.
+ * adds little over the recipe. `context` (WP-44) mechanises the `new-context` skill's manual
+ * multi-file edit: folders + tsconfig alias + boundary entry + lazy route.
  *
  * Positional args skip the prompts, e.g. `npx plop value-object registratie KvkNummer`.
  */
@@ -60,4 +61,76 @@ export default function (plop) {
       remindEnXlf,
     ],
   });
+
+  plop.setGenerator('context', {
+    description:
+      'Scaffold a bounded context: folders + tsconfig alias + boundary entry + lazy route',
+    prompts: [
+      {
+        type: 'input',
+        name: 'name',
+        message: 'Context name (lowercase, single Dutch ubiquitous term, e.g. vergunning):',
+      },
+    ],
+    actions: [
+      {
+        type: 'add',
+        path: 'src/app/{{kebabCase name}}/ui/{{kebabCase name}}.page.ts',
+        templateFile: 'plop-templates/context.page.hbs',
+      },
+      {
+        type: 'add',
+        path: 'src/app/{{kebabCase name}}/domain/.gitkeep',
+        templateFile: 'plop-templates/gitkeep.hbs',
+      },
+      {
+        type: 'add',
+        path: 'src/app/{{kebabCase name}}/application/.gitkeep',
+        templateFile: 'plop-templates/gitkeep.hbs',
+      },
+      {
+        type: 'add',
+        path: 'src/app/{{kebabCase name}}/infrastructure/.gitkeep',
+        templateFile: 'plop-templates/gitkeep.hbs',
+      },
+      {
+        type: 'add',
+        path: 'src/app/{{kebabCase name}}/contracts/.gitkeep',
+        templateFile: 'plop-templates/gitkeep.hbs',
+      },
+      {
+        // tsconfig path alias — inserted right after the `"paths": {` line so it's stable
+        // across repeated runs regardless of what's already been added.
+        type: 'modify',
+        path: 'tsconfig.json',
+        pattern: /"paths": \{\n/,
+        template: '"paths": {\n      "@{{kebabCase name}}/*": ["src/app/{{kebabCase name}}/*"],\n',
+      },
+      {
+        // Boundary entry (WP-38's single source of truth) — inserted right before the
+        // `showcase: null` line, which never moves.
+        type: 'modify',
+        path: '.dependency-cruiser.js',
+        pattern: /(\s*)showcase: null,/,
+        template: "$1'{{kebabCase name}}': [],$1showcase: null,",
+      },
+      {
+        // Lazy route — inserted right before the catch-all, which never moves.
+        type: 'modify',
+        path: 'src/app/app.routes.ts',
+        pattern: "      { path: '**', redirectTo: 'login' },",
+        template: `      {
+        path: '{{kebabCase name}}',
+        canActivate: [authGuard],
+        loadComponent: () =>
+          import('@{{kebabCase name}}/ui/{{kebabCase name}}.page').then(
+            (m) => m.{{pascalCase name}}Page,
+          ),
+      },
+      { path: '**', redirectTo: 'login' },`,
+      },
+      () =>
+        'Next: npm run dep:check && npm run lint && npm run build to verify, then build the first feature with the new-feature skill.',
+    ],
+  });
 }