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/Entity/Npc.php

@@ -0,0 +1,198 @@
+<?php
+
+namespace App\Entity;
+
+use App\Enum\BloodCartInvolvement;
+use App\Enum\MysteryImportance;
+use App\Enum\Race;
+use App\Enum\VillageStatus;
+use App\Repository\NpcRepository;
+use Doctrine\DBAL\Types\Types;
+use Doctrine\ORM\Mapping as ORM;
+use Symfony\Component\Validator\Constraints as Assert;
+
+#[ORM\Entity(repositoryClass: NpcRepository::class)]
+#[ORM\UniqueConstraint(name: 'uniq_npc_family_name', columns: ['family', 'name'])]
+#[ORM\HasLifecycleCallbacks]
+class Npc
+{
+    #[ORM\Id]
+    #[ORM\GeneratedValue]
+    #[ORM\Column]
+    private ?int $id = null;
+
+    #[ORM\Column(length: 120)]
+    #[Assert\NotBlank]
+    private string $family = '';
+
+    #[ORM\Column(length: 160)]
+    #[Assert\NotBlank]
+    private string $name = '';
+
+    #[ORM\Column(type: Types::SMALLINT, nullable: true)]
+    #[Assert\PositiveOrZero]
+    private ?int $age = null;
+
+    #[ORM\Column(enumType: Race::class)]
+    private Race $race = Race::Human;
+
+    #[ORM\Column(length: 160, nullable: true)]
+    private ?string $occupation = null;
+
+    /** Free text - the spreadsheet's "Relationships / Notes" column. */
+    #[ORM\Column(type: Types::TEXT, nullable: true)]
+    private ?string $relationships = null;
+
+    #[ORM\Column(enumType: VillageStatus::class)]
+    private VillageStatus $villageStatus = VillageStatus::Established;
+
+    #[ORM\Column(enumType: BloodCartInvolvement::class)]
+    private BloodCartInvolvement $bloodCartInvolvement = BloodCartInvolvement::None;
+
+    #[ORM\Column(enumType: MysteryImportance::class)]
+    private MysteryImportance $mysteryImportance = MysteryImportance::Low;
+
+    /** DM's live notes, written during play. Never touched by the importer. */
+    #[ORM\Column(type: Types::TEXT, nullable: true)]
+    private ?string $gameNotes = null;
+
+    #[ORM\Column(type: Types::DATETIME_IMMUTABLE, nullable: true)]
+    private ?\DateTimeImmutable $updatedAt = null;
+
+    #[ORM\PrePersist]
+    #[ORM\PreUpdate]
+    public function touch(): void
+    {
+        $this->updatedAt = new \DateTimeImmutable();
+    }
+
+    public function getId(): ?int
+    {
+        return $this->id;
+    }
+
+    public function getFamily(): string
+    {
+        return $this->family;
+    }
+
+    public function setFamily(string $family): static
+    {
+        $this->family = $family;
+
+        return $this;
+    }
+
+    public function getName(): string
+    {
+        return $this->name;
+    }
+
+    public function setName(string $name): static
+    {
+        $this->name = $name;
+
+        return $this;
+    }
+
+    public function getAge(): ?int
+    {
+        return $this->age;
+    }
+
+    public function setAge(?int $age): static
+    {
+        $this->age = $age;
+
+        return $this;
+    }
+
+    public function getRace(): Race
+    {
+        return $this->race;
+    }
+
+    public function setRace(Race $race): static
+    {
+        $this->race = $race;
+
+        return $this;
+    }
+
+    public function getOccupation(): ?string
+    {
+        return $this->occupation;
+    }
+
+    public function setOccupation(?string $occupation): static
+    {
+        $this->occupation = $occupation;
+
+        return $this;
+    }
+
+    public function getRelationships(): ?string
+    {
+        return $this->relationships;
+    }
+
+    public function setRelationships(?string $relationships): static
+    {
+        $this->relationships = $relationships;
+
+        return $this;
+    }
+
+    public function getVillageStatus(): VillageStatus
+    {
+        return $this->villageStatus;
+    }
+
+    public function setVillageStatus(VillageStatus $villageStatus): static
+    {
+        $this->villageStatus = $villageStatus;
+
+        return $this;
+    }
+
+    public function getBloodCartInvolvement(): BloodCartInvolvement
+    {
+        return $this->bloodCartInvolvement;
+    }
+
+    public function setBloodCartInvolvement(BloodCartInvolvement $bloodCartInvolvement): static
+    {
+        $this->bloodCartInvolvement = $bloodCartInvolvement;
+
+        return $this;
+    }
+
+    public function getMysteryImportance(): MysteryImportance
+    {
+        return $this->mysteryImportance;
+    }
+
+    public function setMysteryImportance(MysteryImportance $mysteryImportance): static
+    {
+        $this->mysteryImportance = $mysteryImportance;
+
+        return $this;
+    }
+
+    public function getGameNotes(): ?string
+    {
+        return $this->gameNotes;
+    }
+
+    public function setGameNotes(?string $gameNotes): static
+    {
+        $this->gameNotes = $gameNotes;
+
+        return $this;
+    }
+
+    public function getUpdatedAt(): ?\DateTimeImmutable
+    {
+        return $this->updatedAt;
+    }
+}