feat(hunting): show cleared encounters and resume interrupted fights

The hunt screen kept whatever roll was last in memory, so a player coming
back from a fight saw every encounter as fresh. Encounters now carry their
own status, which the combat module advances as fights start and end.

- hunt_encounters.status replaces consumed_at, which only recorded that a
  fight had begun and could not distinguish a win from a loss
- a lost fight hands the encounter back as AVAILABLE, so it can be retried;
  the unique index tying one combat to one encounter goes with it
- GET /hunts/active serves the resumable hunt, which the hunt page adopts on
  entry rather than trusting its in-memory roll
- defeated encounters are crossed out and lose their hover and attack action
- a fresh page load rejoins a combat the server still holds open

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

apps/api/src/database/migrations/1788200000000-AddHuntEncounterStatus.ts

@@ -0,0 +1,54 @@
+import { MigrationInterface, QueryRunner } from 'typeorm';
+
+export class AddHuntEncounterStatus1788200000000 implements MigrationInterface {
+  public async up(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query(
+      "CREATE TYPE \"hunt_encounter_status_enum\" AS ENUM ('AVAILABLE', 'IN_PROGRESS', 'DEFEATED')",
+    );
+    await queryRunner.query(`ALTER TABLE "hunt_encounters"
+      ADD COLUMN "status" "hunt_encounter_status_enum" NOT NULL DEFAULT 'AVAILABLE'`);
+
+    // consumed_at only recorded that a fight had started, so the outcome has
+    // to be read off the combat it spawned. The unique index this migration
+    // drops guarantees at most one such combat per encounter.
+    await queryRunner.query(`UPDATE "hunt_encounters" AS "encounter"
+      SET "status" = CASE "combat"."status"
+        WHEN 'WON' THEN 'DEFEATED'::"hunt_encounter_status_enum"
+        WHEN 'ACTIVE' THEN 'IN_PROGRESS'::"hunt_encounter_status_enum"
+        ELSE 'AVAILABLE'::"hunt_encounter_status_enum"
+      END
+      FROM "combats" AS "combat"
+      WHERE "combat"."hunt_encounter_id" = "encounter"."id"`);
+
+    await queryRunner.query(
+      'ALTER TABLE "hunt_encounters" DROP COLUMN "consumed_at"',
+    );
+
+    // A retried encounter gets a second combat row, so the index that kept
+    // them one-to-one has to go; one ACTIVE combat per character is still
+    // enforced by IDX_active_combat_per_character.
+    await queryRunner.query('DROP INDEX "IDX_combats_hunt_encounter"');
+    await queryRunner.query(
+      'CREATE INDEX "IDX_combats_hunt_encounter" ON "combats" ("hunt_encounter_id")',
+    );
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<void> {
+    await queryRunner.query('DROP INDEX "IDX_combats_hunt_encounter"');
+    await queryRunner.query(
+      'CREATE UNIQUE INDEX "IDX_combats_hunt_encounter" ON "combats" ("hunt_encounter_id")',
+    );
+
+    await queryRunner.query(
+      'ALTER TABLE "hunt_encounters" ADD COLUMN "consumed_at" TIMESTAMP WITH TIME ZONE',
+    );
+    await queryRunner.query(`UPDATE "hunt_encounters"
+      SET "consumed_at" = now()
+      WHERE "status" <> 'AVAILABLE'`);
+
+    await queryRunner.query(
+      'ALTER TABLE "hunt_encounters" DROP COLUMN "status"',
+    );
+    await queryRunner.query('DROP TYPE "hunt_encounter_status_enum"');
+  }
+}

apps/api/src/database/migrations/combat-system.migration.spec.ts

@@ -2,7 +2,6 @@ import 'reflect-metadata';
 import { getMetadataArgsStorage } from 'typeorm';
 import { Combat } from '../../combat/entities/combat.entity';
 import { CombatEvent } from '../../combat/entities/combat-event.entity';
-import { HuntEncounter } from '../../hunting/entities/hunt-encounter.entity';
 
 describe('combat system schema', () => {
   it('maps Combat and CombatEvent relations with the documented onDelete behavior', () => {
@@ -28,17 +27,6 @@ describe('combat system schema', () => {
     );
   });
 
-  it('enforces one combat per hunt encounter via a unique index', () => {
-    const metadata = getMetadataArgsStorage();
-    const index = metadata.indices.find(
-      (candidate) => candidate.target === Combat && candidate.columns?.includes('huntEncounterId'),
-    );
-
-    expect(index).toBeDefined();
-    const indexMetadata = index as typeof index & { options?: { unique?: boolean }; unique?: boolean };
-    expect(indexMetadata?.options?.unique ?? indexMetadata?.unique).toBe(true);
-  });
-
   it('enforces ordered, unique event sequencing per combat', () => {
     const metadata = getMetadataArgsStorage();
     const index = metadata.indices.find(
@@ -52,14 +40,4 @@ describe('combat system schema', () => {
     const indexMetadata = index as typeof index & { options?: { unique?: boolean }; unique?: boolean };
     expect(indexMetadata?.options?.unique ?? indexMetadata?.unique).toBe(true);
   });
-
-  it('adds a nullable consumedAt column to hunt_encounters to prevent reuse', () => {
-    const metadata = getMetadataArgsStorage();
-    const column = metadata.columns.find(
-      (candidate) => candidate.target === HuntEncounter && candidate.propertyName === 'consumedAt',
-    );
-
-    expect(column).toBeDefined();
-    expect(column?.options.nullable).toBe(true);
-  });
 });

apps/api/src/database/migrations/encounter-status.migration.spec.ts

@@ -0,0 +1,49 @@
+import 'reflect-metadata';
+import { getMetadataArgsStorage } from 'typeorm';
+import { Combat } from '../../combat/entities/combat.entity';
+import { HuntEncounter } from '../../hunting/entities/hunt-encounter.entity';
+import { HuntEncounterStatus } from '../../hunting/hunt-encounter-status.enum';
+
+describe('encounter status schema', () => {
+  it('stores the encounter status as a non-nullable enum on hunt_encounters', () => {
+    const metadata = getMetadataArgsStorage();
+    const column = metadata.columns.find(
+      (candidate) =>
+        candidate.target === HuntEncounter &&
+        candidate.propertyName === 'status',
+    );
+
+    expect(column).toBeDefined();
+    expect(column?.options.type).toBe('enum');
+    expect(column?.options.enum).toBe(HuntEncounterStatus);
+    expect(column?.options.enumName).toBe('hunt_encounter_status_enum');
+    expect(column?.options.nullable).toBeFalsy();
+  });
+
+  it('drops consumedAt, whose gate the encounter status replaces', () => {
+    const metadata = getMetadataArgsStorage();
+    const column = metadata.columns.find(
+      (candidate) =>
+        candidate.target === HuntEncounter &&
+        candidate.propertyName === 'consumedAt',
+    );
+
+    expect(column).toBeUndefined();
+  });
+
+  it('allows repeated combats per encounter so a lost fight can be retried', () => {
+    const metadata = getMetadataArgsStorage();
+    const index = metadata.indices.find(
+      (candidate) =>
+        candidate.target === Combat &&
+        candidate.columns?.includes('huntEncounterId'),
+    );
+
+    expect(index).toBeDefined();
+    const indexMetadata = index as typeof index & {
+      options?: { unique?: boolean };
+      unique?: boolean;
+    };
+    expect(indexMetadata?.options?.unique ?? indexMetadata?.unique).toBeFalsy();
+  });
+});