Add per-project card statuses and a kanban board

Statuses
- Migration 006: card_statuses table (project-scoped) and cards.status_id, a
  nullable FK with ON DELETE SET NULL. Every new project is seeded with
  "To do" / "Doing" / "Done"; GET /api/projects/{id}/statuses lists them.
- New cards have no status -- they sit in an "inbox" until moved.

Project view
- Full-width and tabbed: "All tasks" (a flat list, sorted by name
  case-insensitively) and "Kanban" (Inbox plus one column per status).
- Drag a card within or between columns to reorder / restatus; the Inbox
  column has its own name + Add form.

Ordering
- Migration 007: `position` is now a dense 0..n-1 rank within a
  (project_id, status_id) column, not a project-wide order. New composite
  index idx_cards_project_status_position; existing rows re-ranked.
- PUT /api/projects/{id}/cards/order takes { status_id, card_ids } and sets one
  column's contents and order, re-parenting moved-in cards and re-packing their
  source column in a single transaction. PATCH status_id appends the card to the
  end of the destination column.

58 phpunit tests pass; the frontend type-checks and builds.

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

web/src/App.vue

@@ -1,5 +1,5 @@
 <script setup lang="ts">
-import { RouterLink, RouterView, useRouter } from 'vue-router'
+import { RouterLink, RouterView, useRoute, useRouter } from 'vue-router'
 import { useAuthStore } from './stores/auth'
 import { useCardsStore } from './stores/cards'
 import { useProjectsStore } from './stores/projects'
@@ -8,6 +8,7 @@ const auth = useAuthStore()
 const projects = useProjectsStore()
 const cards = useCardsStore()
 const router = useRouter()
+const route = useRoute()
 
 async function onLogout() {
   auth.logout()
@@ -31,7 +32,7 @@ async function onLogout() {
       </div>
     </header>
 
-    <main class="app__main">
+    <main class="app__main" :class="{ 'app__main--wide': route.meta.wide }">
       <RouterView />
     </main>
   </div>