Add NPC database table with server-side DataTable and per-NPC game notes

- Npc entity (village spreadsheet columns) + game_notes text field for
  the DM's live play notes, plus updated_at touched on every change
- Race / VillageStatus / BloodCartInvolvement / MysteryImportance as
  string-backed PHP enums, rendered as dropdowns on the edit form
- /npcs: server-side DataTables (paging, global search and column sort
  all run in the backend via NpcRepository::findForDataTable); name cell
  links to the edit page, game notes shown truncated
- /npcs/{id}: Bootstrap-themed edit form (all fields + a large game
  notes textarea); Symfony forms now use the bootstrap_5 theme
- app.js: generic server-side DataTable wiring driven by data-* on the
  <table>/<th> (data-datatable-src, data-row-url, data-format)
- app:npc:import console command - upserts from data/npcs.csv by
  (family, name), never overwrites game_notes; --purge / --dry-run
- data/npcs.csv: 180 villagers exported from the working spreadsheet

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

src/Form/NpcType.php

@@ -0,0 +1,52 @@
+<?php
+
+namespace App\Form;
+
+use App\Entity\Npc;
+use App\Enum\BloodCartInvolvement;
+use App\Enum\MysteryImportance;
+use App\Enum\Race;
+use App\Enum\VillageStatus;
+use Symfony\Component\Form\AbstractType;
+use Symfony\Component\Form\Extension\Core\Type\EnumType;
+use Symfony\Component\Form\Extension\Core\Type\IntegerType;
+use Symfony\Component\Form\Extension\Core\Type\TextareaType;
+use Symfony\Component\Form\Extension\Core\Type\TextType;
+use Symfony\Component\Form\FormBuilderInterface;
+use Symfony\Component\OptionsResolver\OptionsResolver;
+
+class NpcType extends AbstractType
+{
+    public function buildForm(FormBuilderInterface $builder, array $options): void
+    {
+        $enum = static fn (string $class) => [
+            'class' => $class,
+            'choice_label' => static fn ($case) => $case->value,
+        ];
+
+        $builder
+            ->add('family', TextType::class)
+            ->add('name', TextType::class)
+            ->add('age', IntegerType::class, ['required' => false])
+            ->add('race', EnumType::class, $enum(Race::class))
+            ->add('occupation', TextType::class, ['required' => false])
+            ->add('relationships', TextareaType::class, [
+                'required' => false,
+                'label' => 'Relationships / Notes',
+                'attr' => ['rows' => 3],
+            ])
+            ->add('villageStatus', EnumType::class, $enum(VillageStatus::class))
+            ->add('bloodCartInvolvement', EnumType::class, $enum(BloodCartInvolvement::class))
+            ->add('mysteryImportance', EnumType::class, $enum(MysteryImportance::class))
+            ->add('gameNotes', TextareaType::class, [
+                'required' => false,
+                'label' => 'Game notes',
+                'attr' => ['rows' => 10, 'placeholder' => 'What happened with this NPC during play…'],
+            ]);
+    }
+
+    public function configureOptions(OptionsResolver $resolver): void
+    {
+        $resolver->setDefaults(['data_class' => Npc::class]);
+    }
+}