Merge branch 'worktree-playable-slice-0.5-first-upgrade'

# Conflicts:
#	apps/web/src/app/core/api/game-api.service.ts
#	apps/web/src/app/features/combat/combat-page/combat-page.component.html
#	apps/web/src/app/features/combat/combat-page/combat-page.component.scss
#	apps/web/src/app/features/combat/combat-page/combat-page.component.spec.ts
#	apps/web/src/app/features/combat/combat-page/combat-page.component.ts

apps/api/src/database/seeds/vertical-slice.seed.spec.ts

@@ -1,5 +1,7 @@
 import { DataSource } from 'typeorm';
 import { Character } from '../../characters/entities/character.entity';
+import { CharacterEquipment } from '../../equipment/entities/character-equipment.entity';
+import { CharacterItem } from '../../items/entities/character-item.entity';
 import { ItemDefinition } from '../../items/entities/item-definition.entity';
 import { LootTableEntry } from '../../loot/entities/loot-table-entry.entity';
 import { LootTable } from '../../loot/entities/loot-table.entity';
@@ -7,6 +9,7 @@ import { LocationMonster } from '../../monsters/entities/location-monster.entity
 import { MonsterDefinition } from '../../monsters/entities/monster-definition.entity';
 import { LocationConnection } from '../../world/entities/location-connection.entity';
 import { LocationDefinition } from '../../world/entities/location-definition.entity';
+import { DEMO_CHARACTER_STARTING_WEAPON_ITEM_ID } from '../../demo/demo-character.constants';
 import { ASH_RAT_LOOT_TABLE_ID, ITEM_IDS, ROAD_BANDIT_LOOT_TABLE_ID } from './item.constants';
 import { seedVisibleVerticalSlice } from './vertical-slice.seed';
 
@@ -76,6 +79,8 @@ function createDataSource(
   itemRepository: InMemoryRepository = new InMemoryRepository(),
   lootTableRepository: InMemoryRepository = new InMemoryRepository(),
   lootEntryRepository: InMemoryRepository = new InMemoryRepository(),
+  characterItemRepository: InMemoryRepository = new InMemoryRepository(),
+  characterEquipmentRepository: InMemoryRepository = new InMemoryRepository(),
 ): DataSource {
   return {
     getRepository: jest.fn((entity: unknown) => {
@@ -87,6 +92,8 @@ function createDataSource(
       if (entity === ItemDefinition) return itemRepository;
       if (entity === LootTable) return lootTableRepository;
       if (entity === LootTableEntry) return lootEntryRepository;
+      if (entity === CharacterItem) return characterItemRepository;
+      if (entity === CharacterEquipment) return characterEquipmentRepository;
 
       throw new Error('Unexpected repository');
     }),
@@ -449,4 +456,125 @@ describe('seedVisibleVerticalSlice', () => {
       ]),
     );
   });
+
+  it('seeds the starting sword as a real, equipped CharacterItem idempotently', async () => {
+    const locationRepository = new InMemoryRepository();
+    const connectionRepository = new InMemoryRepository();
+    const characterRepository = new InMemoryRepository();
+    const monsterRepository = new InMemoryRepository();
+    const locationMonsterRepository = new InMemoryRepository();
+    const characterItemRepository = new InMemoryRepository();
+    const characterEquipmentRepository = new InMemoryRepository();
+    const dataSource = createDataSource(
+      locationRepository,
+      connectionRepository,
+      characterRepository,
+      monsterRepository,
+      locationMonsterRepository,
+      new InMemoryRepository(),
+      new InMemoryRepository(),
+      new InMemoryRepository(),
+      characterItemRepository,
+      characterEquipmentRepository,
+    );
+
+    await seedVisibleVerticalSlice(dataSource);
+    await seedVisibleVerticalSlice(dataSource);
+
+    expect(characterItemRepository.rows).toHaveLength(1);
+    expect(characterItemRepository.rows[0]).toEqual(
+      expect.objectContaining({
+        characterId: DEMO_CHARACTER_ID,
+        itemDefinitionId: ITEM_IDS['worn-short-sword'],
+        quantity: 1,
+      }),
+    );
+    expect(characterEquipmentRepository.rows).toHaveLength(1);
+    expect(characterEquipmentRepository.rows[0]).toEqual(
+      expect.objectContaining({
+        characterId: DEMO_CHARACTER_ID,
+        slot: 'WEAPON',
+        characterItemId: DEMO_CHARACTER_STARTING_WEAPON_ITEM_ID,
+      }),
+    );
+  });
+
+  it('never re-equips the starting sword once the player has equipped different gear', async () => {
+    const locationRepository = new InMemoryRepository();
+    const connectionRepository = new InMemoryRepository();
+    const characterRepository = new InMemoryRepository();
+    const monsterRepository = new InMemoryRepository();
+    const locationMonsterRepository = new InMemoryRepository();
+    const characterItemRepository = new InMemoryRepository();
+    const characterEquipmentRepository = new InMemoryRepository();
+    const dataSource = createDataSource(
+      locationRepository,
+      connectionRepository,
+      characterRepository,
+      monsterRepository,
+      locationMonsterRepository,
+      new InMemoryRepository(),
+      new InMemoryRepository(),
+      new InMemoryRepository(),
+      characterItemRepository,
+      characterEquipmentRepository,
+    );
+
+    await seedVisibleVerticalSlice(dataSource);
+    // Simulate the player having equipped earned loot instead.
+    characterEquipmentRepository.rows[0]['characterItemId'] = 'earned-bandit-blade-item-id';
+
+    await seedVisibleVerticalSlice(dataSource);
+
+    expect(characterEquipmentRepository.rows).toHaveLength(1);
+    expect(characterEquipmentRepository.rows[0]['characterItemId']).toBe(
+      'earned-bandit-blade-item-id',
+    );
+    expect(characterItemRepository.rows).toHaveLength(1);
+  });
+
+  it('reuses a naturally-looted starting sword instead of inserting a duplicate CharacterItem', async () => {
+    const locationRepository = new InMemoryRepository();
+    const connectionRepository = new InMemoryRepository();
+    const characterRepository = new InMemoryRepository();
+    const monsterRepository = new InMemoryRepository();
+    const locationMonsterRepository = new InMemoryRepository();
+    const characterItemRepository = new InMemoryRepository();
+    const characterEquipmentRepository = new InMemoryRepository();
+    const dataSource = createDataSource(
+      locationRepository,
+      connectionRepository,
+      characterRepository,
+      monsterRepository,
+      locationMonsterRepository,
+      new InMemoryRepository(),
+      new InMemoryRepository(),
+      new InMemoryRepository(),
+      characterItemRepository,
+      characterEquipmentRepository,
+    );
+
+    // Simulate the demo character having already looted a worn-short-sword
+    // naturally, under a DB-generated id that differs from the seed's
+    // stable literal constant.
+    const naturallyLootedItemId = 'naturally-looted-sword-item-id';
+    characterItemRepository.rows.push({
+      id: naturallyLootedItemId,
+      characterId: DEMO_CHARACTER_ID,
+      itemDefinitionId: ITEM_IDS['worn-short-sword'],
+      quantity: 1,
+    });
+
+    await seedVisibleVerticalSlice(dataSource);
+
+    expect(characterItemRepository.rows).toHaveLength(1);
+    expect(characterEquipmentRepository.rows).toHaveLength(1);
+    expect(characterEquipmentRepository.rows[0]).toEqual(
+      expect.objectContaining({
+        characterId: DEMO_CHARACTER_ID,
+        slot: 'WEAPON',
+        characterItemId: naturallyLootedItemId,
+      }),
+    );
+  });
 });