feat(api): expose effective HP and regen anchor from GET /characters/me

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

apps/api/src/characters/characters.service.spec.ts

@@ -17,6 +17,8 @@ function fakeCharacterStats(
       weaponDamage: 8,
       armor: 0,
       combatPower: 0,
+      hpRegenPerSecond: 1,
+      hpRegenSince: new Date('2026-08-18T09:00:00.000Z'),
     }),
   } as unknown as CharacterStatsService;
 }
@@ -52,6 +54,8 @@ describe('CharactersService', () => {
       currentHp: 100,
       maxHp: 115,
       attack: 7,
+      hpRegenPerSecond: 1,
+      hpRegenSince: '2026-08-18T09:00:00.000Z',
       currentLocation: {
         id: SOUTH_GATE_ID,
         key: 'south-gate',

apps/api/src/characters/characters.service.ts

@@ -31,9 +31,11 @@ export class CharactersService {
       level: character.level,
       experience: character.experience,
       silver: character.silver,
-      currentHp: character.currentHp,
+      currentHp: stats.currentHp,
       maxHp: stats.maxHp,
       attack: stats.attack,
+      hpRegenPerSecond: stats.hpRegenPerSecond,
+      hpRegenSince: stats.hpRegenSince ? stats.hpRegenSince.toISOString() : null,
       currentLocation: {
         id: character.currentLocation.id,
         key: character.currentLocation.key,