feat(#22): gamificação RPG — XP, quests, conquistas, cosméticos e personagem SVG pixel art

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

apps/api/internal/migration/sql/005_game_profile.sql

@@ -0,0 +1,18 @@
+CREATE TABLE IF NOT EXISTS player_profile (
+    id         SERIAL PRIMARY KEY,
+    level      INTEGER NOT NULL DEFAULT 1,
+    xp         INTEGER NOT NULL DEFAULT 0,
+    xp_to_next INTEGER NOT NULL DEFAULT 100
+);
+INSERT INTO player_profile (level, xp, xp_to_next) VALUES (1, 0, 100)
+ON CONFLICT DO NOTHING;
+
+CREATE TABLE IF NOT EXISTS xp_events (
+    id          SERIAL PRIMARY KEY,
+    event_type  VARCHAR(50) NOT NULL,
+    xp_earned   INTEGER     NOT NULL,
+    description TEXT,
+    created_at  TIMESTAMP WITH TIME ZONE NOT NULL DEFAULT NOW()
+);
+
+INSERT INTO schema_migrations (version) VALUES (5) ON CONFLICT DO NOTHING;