refactor: split intake-wizard into three step components (RD-22)

The parent held one @switch with three @case blocks — three screens'
markup in one file. Each case is independent and needs only the
answers, the errors, and (for two of them) the scholing threshold.

Extract buitenland.step.ts, werk.step.ts, and review.step.ts as pure,
presentational steps: inputs down, one narrow output up, dispatch
never passed down. The parent keeps the store, the shell, and
draftSync, and maps each step's output back to a machine message.

This is the first *.step.ts in the repo, so it sets the naming
convention that RD-23 does the same job with.

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

apps/ssp/src/app/herregistratie/domain/intake.machine.ts

@@ -60,7 +60,7 @@ export const STEPS: StepId[] = ['buitenland', 'werk', 'review'];
 // #endregion showcase:steps
 
 /** Per-field error map: one message per question, since a step holds several. */
-type Errors = Partial<Record<keyof Answers, string>>;
+export type Errors = Partial<Record<keyof Answers, string>>;
 
 export type IntakeState =
   | {

apps/ssp/src/app/herregistratie/ui/intake-wizard/buitenland.step.ts

@@ -0,0 +1,77 @@
+import { Component, input, output } from '@angular/core';
+import { FormsModule } from '@angular/forms';
+import { FormFieldComponent } from '@shared/ui/form-field/form-field.component';
+import { TextInputComponent } from '@shared/ui/text-input/text-input.component';
+import { RadioGroupComponent, JA_NEE } from '@shared/ui/radio-group/radio-group.component';
+import { Answers, Errors } from '@herregistratie/domain/intake.machine';
+
+/** Step: the intake wizard's first screen (foreign work in the last 5 years).
+    Pure & presentational — values in via `answers`/`errors`, every keystroke out
+    via `answerChange`. No store, no services, no internal state; the parent owns
+    the Model and decides what a change means. */
+@Component({
+  selector: 'app-intake-buitenland-step',
+  imports: [FormsModule, FormFieldComponent, TextInputComponent, RadioGroupComponent],
+  template: `
+    <fieldset>
+      <app-form-field
+        i18n-label="@@intake.q.buitenland"
+        label="Heeft u de afgelopen 5 jaar buiten Nederland gewerkt?"
+        fieldId="buitenlandGewerkt"
+        required
+        [error]="err('buitenlandGewerkt')"
+      >
+        <app-radio-group
+          name="buitenlandGewerkt"
+          [options]="jaNee"
+          [ngModel]="answers().buitenlandGewerkt ?? ''"
+          (ngModelChange)="answerChange.emit({ key: 'buitenlandGewerkt', value: $event })"
+        />
+      </app-form-field>
+    </fieldset>
+    @if (answers().buitenlandGewerkt === 'ja') {
+      <fieldset>
+        <app-form-field
+          i18n-label="@@intake.q.land"
+          label="In welk land?"
+          fieldId="land"
+          required
+          [error]="err('land')"
+        >
+          <app-text-input
+            inputId="land"
+            [ngModel]="answers().land ?? ''"
+            (ngModelChange)="answerChange.emit({ key: 'land', value: $event })"
+            name="land"
+            i18n-placeholder="@@intake.q.landPlaceholder"
+            placeholder="bijv. België"
+          />
+        </app-form-field>
+        <app-form-field
+          i18n-label="@@intake.q.buitenlandseUren"
+          label="Hoeveel uur heeft u daar gewerkt?"
+          fieldId="buitenlandseUren"
+          required
+          [error]="err('buitenlandseUren')"
+        >
+          <app-text-input
+            inputId="buitenlandseUren"
+            [ngModel]="answers().buitenlandseUren ?? ''"
+            (ngModelChange)="answerChange.emit({ key: 'buitenlandseUren', value: $event })"
+            name="buitenlandseUren"
+            i18n-placeholder="@@intake.q.buitenlandseUrenPlaceholder"
+            placeholder="bijv. 800"
+          />
+        </app-form-field>
+      </fieldset>
+    }
+  `,
+})
+export class BuitenlandStep {
+  answers = input.required<Answers>();
+  errors = input.required<Errors>();
+  answerChange = output<{ key: keyof Answers; value: string }>();
+
+  readonly jaNee = JA_NEE;
+  protected err = (k: keyof Answers) => this.errors()[k] ?? '';
+}

apps/ssp/src/app/herregistratie/ui/intake-wizard/intake-wizard.component.ts

@@ -1,13 +1,5 @@
-/* eslint-disable max-lines */ // one wizard shell for the intake steps — removed by RD-22
 import { Component, computed, effect, inject, input, untracked } from '@angular/core';
-import { FormsModule } from '@angular/forms';
-import { FormFieldComponent } from '@shared/ui/form-field/form-field.component';
-import { TextInputComponent } from '@shared/ui/text-input/text-input.component';
-import { RadioGroupComponent, JA_NEE } from '@shared/ui/radio-group/radio-group.component';
 import { ButtonComponent } from '@shared/ui/button/button.component';
-import { AlertComponent } from '@shared/ui/alert/alert.component';
-import { DataRowComponent } from '@shared/ui/data-row/data-row.component';
-import { ReviewSectionComponent } from '@shared/ui/review-section/review-section.component';
 import { ConfirmationComponent } from '@shared/ui/confirmation/confirmation.component';
 import {
   WizardShellComponent,
@@ -23,16 +15,19 @@ import {
   IntakeState,
   IntakeMsg,
   Answers,
+  Errors,
   StepId,
   initial,
   reduce,
   STEPS,
-  lageUren,
   hasProgress,
   SCHOLING_THRESHOLD_DEFAULT,
 } from '@herregistratie/domain/intake.machine';
 import { createDraftSync } from '@registratie/application/draft-sync';
 import { IntakePolicyStore } from '@herregistratie/application/intake-policy.store';
+import { BuitenlandStep } from './buitenland.step';
+import { WerkStep } from './werk.step';
+import { ReviewStep } from './review.step';
 
 /** Organism: a BRANCHING intake questionnaire. All state lives in one signal
     driven by the pure `reduce` (intake.machine.ts). Which step renders is derived
@@ -42,16 +37,12 @@ import { IntakePolicyStore } from '@herregistratie/application/intake-policy.sto
 @Component({
   selector: 'app-intake-wizard',
   imports: [
-    FormsModule,
-    FormFieldComponent,
-    TextInputComponent,
-    RadioGroupComponent,
     ButtonComponent,
-    AlertComponent,
-    DataRowComponent,
-    ReviewSectionComponent,
     ConfirmationComponent,
     WizardShellComponent,
+    BuitenlandStep,
+    WerkStep,
+    ReviewStep,
   ],
   template: `
     <app-wizard-shell
@@ -72,180 +63,26 @@ import { IntakePolicyStore } from '@herregistratie/application/intake-policy.sto
     >
       @switch (step()) {
         @case ('buitenland') {
-          <fieldset>
-            <app-form-field
-              i18n-label="@@intake.q.buitenland"
-              label="Heeft u de afgelopen 5 jaar buiten Nederland gewerkt?"
-              fieldId="buitenlandGewerkt"
-              required
-              [error]="err('buitenlandGewerkt')"
-            >
-              <app-radio-group
-                name="buitenlandGewerkt"
-                [options]="jaNee"
-                [ngModel]="answers().buitenlandGewerkt ?? ''"
-                (ngModelChange)="set('buitenlandGewerkt', $event)"
-              />
-            </app-form-field>
-          </fieldset>
-          @if (answers().buitenlandGewerkt === 'ja') {
-            <fieldset>
-              <app-form-field
-                i18n-label="@@intake.q.land"
-                label="In welk land?"
-                fieldId="land"
-                required
-                [error]="err('land')"
-              >
-                <app-text-input
-                  inputId="land"
-                  [ngModel]="answers().land ?? ''"
-                  (ngModelChange)="set('land', $event)"
-                  name="land"
-                  i18n-placeholder="@@intake.q.landPlaceholder"
-                  placeholder="bijv. België"
-                />
-              </app-form-field>
-              <app-form-field
-                i18n-label="@@intake.q.buitenlandseUren"
-                label="Hoeveel uur heeft u daar gewerkt?"
-                fieldId="buitenlandseUren"
-                required
-                [error]="err('buitenlandseUren')"
-              >
-                <app-text-input
-                  inputId="buitenlandseUren"
-                  [ngModel]="answers().buitenlandseUren ?? ''"
-                  (ngModelChange)="set('buitenlandseUren', $event)"
-                  name="buitenlandseUren"
-                  i18n-placeholder="@@intake.q.buitenlandseUrenPlaceholder"
-                  placeholder="bijv. 800"
-                />
-              </app-form-field>
-            </fieldset>
-          }
+          <app-intake-buitenland-step
+            [answers]="answers()"
+            [errors]="errors()"
+            (answerChange)="dispatch({ tag: 'SetAnswer', key: $event.key, value: $event.value })"
+          />
         }
         @case ('werk') {
-          <fieldset>
-            <app-form-field
-              i18n-label="@@intake.q.urenNl"
-              label="Gewerkte uren in Nederland (afgelopen 5 jaar)"
-              fieldId="uren"
-              required
-              [error]="err('uren')"
-            >
-              <app-text-input
-                inputId="uren"
-                [ngModel]="answers().uren ?? ''"
-                (ngModelChange)="set('uren', $event)"
-                name="uren"
-                i18n-placeholder="@@intake.q.urenNlPlaceholder"
-                placeholder="bijv. 4160"
-              />
-            </app-form-field>
-          </fieldset>
-          @if (scholingZichtbaar()) {
-            <fieldset>
-              <app-form-field
-                i18n-label="@@intake.q.scholing"
-                label="U werkte relatief weinig uren. Heeft u aanvullende scholing gevolgd?"
-                fieldId="scholingGevolgd"
-                required
-                [error]="err('scholingGevolgd')"
-              >
-                <app-radio-group
-                  name="scholingGevolgd"
-                  [options]="jaNee"
-                  [ngModel]="answers().scholingGevolgd ?? ''"
-                  (ngModelChange)="set('scholingGevolgd', $event)"
-                />
-              </app-form-field>
-            </fieldset>
-          }
-          @if (answers().scholingGevolgd === 'ja') {
-            <fieldset>
-              <app-form-field
-                i18n-label="@@intake.q.punten"
-                label="Behaalde nascholingspunten"
-                fieldId="punten"
-                required
-                [error]="err('punten')"
-              >
-                <app-text-input
-                  inputId="punten"
-                  [ngModel]="answers().punten ?? ''"
-                  (ngModelChange)="set('punten', $event)"
-                  name="punten"
-                  i18n-placeholder="@@intake.q.puntenPlaceholder"
-                  placeholder="bijv. 200"
-                />
-              </app-form-field>
-            </fieldset>
-          }
+          <app-intake-werk-step
+            [answers]="answers()"
+            [errors]="errors()"
+            [scholingThreshold]="scholingThreshold()"
+            (answerChange)="dispatch({ tag: 'SetAnswer', key: $event.key, value: $event.value })"
+          />
         }
         @case ('review') {
-          <app-alert type="info" i18n="@@intake.review.controleer"
-            >Controleer uw antwoorden en dien de aanvraag in.</app-alert
-          >
-          <app-review-section
-            i18n-heading="@@intake.sectie.buitenland"
-            heading="Buitenland"
-            i18n-editAriaLabel="@@intake.buitenlandWijzigenAria"
-            editAriaLabel="Wijzigen buitenland"
-            (edit)="dispatch({ tag: 'GaNaarStap', cursor: 0 })"
-          >
-            <div
-              app-data-row
-              i18n-key="@@intake.review.buitenNl"
-              key="Buiten NL gewerkt"
-              [value]="answers().buitenlandGewerkt ?? '—'"
-            ></div>
-            @if (answers().buitenlandGewerkt === 'ja') {
-              <div
-                app-data-row
-                i18n-key="@@intake.review.land"
-                key="Land"
-                [value]="answers().land ?? ''"
-              ></div>
-              <div
-                app-data-row
-                i18n-key="@@intake.review.buitenlandseUren"
-                key="Buitenlandse uren"
-                [value]="answers().buitenlandseUren ?? ''"
-              ></div>
-            }
-          </app-review-section>
-          <app-review-section
-            class="app-section"
-            i18n-heading="@@intake.sectie.werk"
-            heading="Werk in Nederland"
-            i18n-editAriaLabel="@@intake.werkWijzigenAria"
-            editAriaLabel="Wijzigen werk in Nederland"
-            (edit)="dispatch({ tag: 'GaNaarStap', cursor: 1 })"
-          >
-            <div
-              app-data-row
-              i18n-key="@@intake.review.urenNl"
-              key="Uren NL"
-              [value]="answers().uren ?? ''"
-            ></div>
-            @if (scholingZichtbaar()) {
-              <div
-                app-data-row
-                i18n-key="@@intake.review.scholing"
-                key="Aanvullende scholing"
-                [value]="answers().scholingGevolgd ?? ''"
-              ></div>
-            }
-            @if (answers().scholingGevolgd === 'ja') {
-              <div
-                app-data-row
-                i18n-key="@@intake.review.punten"
-                key="Nascholingspunten"
-                [value]="answers().punten ?? ''"
-              ></div>
-            }
-          </app-review-section>
+          <app-intake-review-step
+            [answers]="answers()"
+            [scholingThreshold]="scholingThreshold()"
+            (edit)="dispatch({ tag: 'GaNaarStap', cursor: $event })"
+          />
         }
       }
 
@@ -295,7 +132,6 @@ export class IntakeWizardComponent {
   /** Optional seed so Storybook / the showcase can mount any state directly. */
   seed = input<IntakeState>(initial);
 
-  readonly jaNee = JA_NEE;
   readonly state = this.store.model;
   readonly dispatch = this.store.dispatch;
 
@@ -321,8 +157,7 @@ export class IntakeWizardComponent {
   protected scholingThreshold = computed(
     () => this.answering()?.scholingThreshold ?? SCHOLING_THRESHOLD_DEFAULT,
   );
-  /** Whether the inline scholing question is shown (and required) in the 'werk' step. */
-  protected scholingZichtbaar = computed(() => lageUren(this.answers(), this.scholingThreshold()));
+  protected errors = computed<Errors>(() => this.answering()?.errors ?? {});
 
   // --- Presentational wiring for the shared wizard shell ---------------------
   readonly stepLabels = [
@@ -365,10 +200,6 @@ export class IntakeWizardComponent {
     toWizardErrors(this.answering()?.errors ?? {}),
   );
 
-  protected err = (k: keyof Answers) => this.answering()?.errors[k] ?? '';
-  protected set = (key: keyof Answers, value: string) =>
-    this.dispatch({ tag: 'SetAnswer', key, value });
-
   constructor() {
     // An explicit seed (stories/tests) wins; otherwise resume the backend draft
     // (`?aanvraag=<id>`) or start fresh. Persistence is the draftSync controller's job.

apps/ssp/src/app/herregistratie/ui/intake-wizard/review.step.ts

@@ -0,0 +1,85 @@
+import { Component, computed, input, output } from '@angular/core';
+import { AlertComponent } from '@shared/ui/alert/alert.component';
+import { DataRowComponent } from '@shared/ui/data-row/data-row.component';
+import { ReviewSectionComponent } from '@shared/ui/review-section/review-section.component';
+import { Answers, lageUren } from '@herregistratie/domain/intake.machine';
+
+/** Step: the intake wizard's review screen. Pure & presentational — values in via
+    `answers`/`scholingThreshold`, the cursor to jump back to out via `edit`. No
+    store, no services, no internal state; the parent maps the cursor onto its own
+    `GaNaarStap` message. */
+@Component({
+  selector: 'app-intake-review-step',
+  imports: [AlertComponent, DataRowComponent, ReviewSectionComponent],
+  template: `
+    <app-alert type="info" i18n="@@intake.review.controleer"
+      >Controleer uw antwoorden en dien de aanvraag in.</app-alert
+    >
+    <app-review-section
+      i18n-heading="@@intake.sectie.buitenland"
+      heading="Buitenland"
+      i18n-editAriaLabel="@@intake.buitenlandWijzigenAria"
+      editAriaLabel="Wijzigen buitenland"
+      (edit)="edit.emit(0)"
+    >
+      <div
+        app-data-row
+        i18n-key="@@intake.review.buitenNl"
+        key="Buiten NL gewerkt"
+        [value]="answers().buitenlandGewerkt ?? '—'"
+      ></div>
+      @if (answers().buitenlandGewerkt === 'ja') {
+        <div
+          app-data-row
+          i18n-key="@@intake.review.land"
+          key="Land"
+          [value]="answers().land ?? ''"
+        ></div>
+        <div
+          app-data-row
+          i18n-key="@@intake.review.buitenlandseUren"
+          key="Buitenlandse uren"
+          [value]="answers().buitenlandseUren ?? ''"
+        ></div>
+      }
+    </app-review-section>
+    <app-review-section
+      class="app-section"
+      i18n-heading="@@intake.sectie.werk"
+      heading="Werk in Nederland"
+      i18n-editAriaLabel="@@intake.werkWijzigenAria"
+      editAriaLabel="Wijzigen werk in Nederland"
+      (edit)="edit.emit(1)"
+    >
+      <div
+        app-data-row
+        i18n-key="@@intake.review.urenNl"
+        key="Uren NL"
+        [value]="answers().uren ?? ''"
+      ></div>
+      @if (scholingZichtbaar()) {
+        <div
+          app-data-row
+          i18n-key="@@intake.review.scholing"
+          key="Aanvullende scholing"
+          [value]="answers().scholingGevolgd ?? ''"
+        ></div>
+      }
+      @if (answers().scholingGevolgd === 'ja') {
+        <div
+          app-data-row
+          i18n-key="@@intake.review.punten"
+          key="Nascholingspunten"
+          [value]="answers().punten ?? ''"
+        ></div>
+      }
+    </app-review-section>
+  `,
+})
+export class ReviewStep {
+  answers = input.required<Answers>();
+  scholingThreshold = input.required<number>();
+  edit = output<number>();
+
+  protected scholingZichtbaar = computed(() => lageUren(this.answers(), this.scholingThreshold()));
+}

apps/ssp/src/app/herregistratie/ui/intake-wizard/werk.step.ts

@@ -0,0 +1,84 @@
+import { Component, computed, input, output } from '@angular/core';
+import { FormsModule } from '@angular/forms';
+import { FormFieldComponent } from '@shared/ui/form-field/form-field.component';
+import { TextInputComponent } from '@shared/ui/text-input/text-input.component';
+import { RadioGroupComponent, JA_NEE } from '@shared/ui/radio-group/radio-group.component';
+import { Answers, Errors, lageUren } from '@herregistratie/domain/intake.machine';
+
+/** Step: the intake wizard's second screen (work experience in the Netherlands,
+    with the inline scholing follow-up). Pure & presentational — values in via
+    `answers`/`errors`/`scholingThreshold`, every keystroke out via `answerChange`.
+    No store, no services, no internal state; the parent owns the Model and
+    decides what a change means. */
+@Component({
+  selector: 'app-intake-werk-step',
+  imports: [FormsModule, FormFieldComponent, TextInputComponent, RadioGroupComponent],
+  template: `
+    <fieldset>
+      <app-form-field
+        i18n-label="@@intake.q.urenNl"
+        label="Gewerkte uren in Nederland (afgelopen 5 jaar)"
+        fieldId="uren"
+        required
+        [error]="err('uren')"
+      >
+        <app-text-input
+          inputId="uren"
+          [ngModel]="answers().uren ?? ''"
+          (ngModelChange)="answerChange.emit({ key: 'uren', value: $event })"
+          name="uren"
+          i18n-placeholder="@@intake.q.urenNlPlaceholder"
+          placeholder="bijv. 4160"
+        />
+      </app-form-field>
+    </fieldset>
+    @if (scholingZichtbaar()) {
+      <fieldset>
+        <app-form-field
+          i18n-label="@@intake.q.scholing"
+          label="U werkte relatief weinig uren. Heeft u aanvullende scholing gevolgd?"
+          fieldId="scholingGevolgd"
+          required
+          [error]="err('scholingGevolgd')"
+        >
+          <app-radio-group
+            name="scholingGevolgd"
+            [options]="jaNee"
+            [ngModel]="answers().scholingGevolgd ?? ''"
+            (ngModelChange)="answerChange.emit({ key: 'scholingGevolgd', value: $event })"
+          />
+        </app-form-field>
+      </fieldset>
+    }
+    @if (answers().scholingGevolgd === 'ja') {
+      <fieldset>
+        <app-form-field
+          i18n-label="@@intake.q.punten"
+          label="Behaalde nascholingspunten"
+          fieldId="punten"
+          required
+          [error]="err('punten')"
+        >
+          <app-text-input
+            inputId="punten"
+            [ngModel]="answers().punten ?? ''"
+            (ngModelChange)="answerChange.emit({ key: 'punten', value: $event })"
+            name="punten"
+            i18n-placeholder="@@intake.q.puntenPlaceholder"
+            placeholder="bijv. 200"
+          />
+        </app-form-field>
+      </fieldset>
+    }
+  `,
+})
+export class WerkStep {
+  answers = input.required<Answers>();
+  errors = input.required<Errors>();
+  scholingThreshold = input.required<number>();
+  answerChange = output<{ key: keyof Answers; value: string }>();
+
+  readonly jaNee = JA_NEE;
+  protected err = (k: keyof Answers) => this.errors()[k] ?? '';
+  protected scholingZichtbaar = computed(() => lageUren(this.answers(), this.scholingThreshold()));
+}