refactor(gui-v2): delete X.vue stub, repoint 2 boundary refs to StatusTag, add shared/* regression locks

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

apps/app/src/components-v2/shared/X.vue

@@ -1,10 +0,0 @@
-<script setup lang="ts">
-// Boundary-test placeholder — do not import in production code.
-// Exists so eslint-plugin-boundaries can resolve @/components-v2/shared/X.vue
-// in unit tests (the resolver skips unresolvable imports).
-// TODO TECH-WS-GUI-REDESIGN: replace with real shared components.
-</script>
-
-<template>
-  <div />
-</template>

apps/app/tests/unit/boundaries-v2.spec.ts

@@ -32,7 +32,7 @@ describe('boundaries — v2 zones', () => {
   it('allows pages-v2 → components-v2', async () => {
     const errs = await boundaryErrors(
       'src/pages-v2/dashboard.vue',
-      '<script setup lang="ts">import X from \'@/components-v2/shared/X.vue\'</script><template><X /></template>',
+      '<script setup lang="ts">import StatusTag from \'@/components-v2/shared/StatusTag.vue\'</script><template><StatusTag status="approved" /></template>',
     )
 
     expect(errs).toHaveLength(0)
@@ -62,7 +62,7 @@ describe('boundaries — v2 zones', () => {
   it('forbids v1 components → components-v2 (no back-porting)', async () => {
     const errs = await boundaryErrors(
       'src/components/organizer/Legacy.vue',
-      '<script setup lang="ts">import X from \'@/components-v2/shared/X.vue\'</script><template><X /></template>',
+      '<script setup lang="ts">import StatusTag from \'@/components-v2/shared/StatusTag.vue\'</script><template><StatusTag status="approved" /></template>',
     )
 
     expect(errs.length).toBeGreaterThan(0)
@@ -101,4 +101,38 @@ describe('boundaries — v2 zones', () => {
 
     expect(errs.length).toBeGreaterThan(0)
   })
+
+  // -------------------------------------------------------------------------
+  // shared/* regression-lock cases: lock the allowed/forbidden edges for
+  // components-v2/shared so future drift is caught by CI (constraint #7
+  // intent served by regression tests instead of a redundant sub-zone —
+  // Bert-approved plan decision, Phase C gate).
+  // -------------------------------------------------------------------------
+
+  it('allows components-v2/shared → types (statusSeverity consumes enums)', async () => {
+    const errs = await boundaryErrors(
+      'src/components-v2/shared/StatusTag.vue',
+      '<script setup lang="ts">import { ShiftAssignmentStatus } from \'@/types/shiftAssignment\'</script><template><span>{{ ShiftAssignmentStatus.APPROVED }}</span></template>',
+    )
+
+    expect(errs).toHaveLength(0)
+  })
+
+  it('forbids components-v2/shared → pages-v2 (no upward import)', async () => {
+    const errs = await boundaryErrors(
+      'src/components-v2/shared/StatusTag.vue',
+      '<script setup lang="ts">import Dash from \'@/pages-v2/dashboard.vue\'</script><template><Dash /></template>',
+    )
+
+    expect(errs.length).toBeGreaterThan(0)
+  })
+
+  it('forbids components-v2/shared → layouts (no upward import)', async () => {
+    const errs = await boundaryErrors(
+      'src/components-v2/shared/StatusTag.vue',
+      '<script setup lang="ts">import L from \'@/layouts/OrganizerLayoutV2.vue\'</script><template><L /></template>',
+    )
+
+    expect(errs.length).toBeGreaterThan(0)
+  })
 })