feat: add auth system, boss pokemon details, moves/abilities API, and run ownership

Add user authentication with login/signup/protected routes, boss pokemon
detail fields and result team tracking, moves and abilities selector
components and API, run ownership and visibility controls, and various
UI improvements across encounters, run list, and journal pages.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

backend/src/app/models/__init__.py

@@ -2,6 +2,7 @@ from app.models.ability import Ability
 from app.models.boss_battle import BossBattle
 from app.models.boss_pokemon import BossPokemon
 from app.models.boss_result import BossResult
+from app.models.boss_result_team import BossResultTeam
 from app.models.encounter import Encounter
 from app.models.evolution import Evolution
 from app.models.game import Game
@@ -13,6 +14,7 @@ from app.models.nuzlocke_run import NuzlockeRun
 from app.models.pokemon import Pokemon
 from app.models.route import Route
 from app.models.route_encounter import RouteEncounter
+from app.models.user import User
 from app.models.version_group import VersionGroup
 
 __all__ = [
@@ -20,6 +22,7 @@ __all__ = [
     "BossBattle",
     "BossPokemon",
     "BossResult",
+    "BossResultTeam",
     "Encounter",
     "Evolution",
     "Game",
@@ -32,5 +35,6 @@ __all__ = [
     "Pokemon",
     "Route",
     "RouteEncounter",
+    "User",
     "VersionGroup",
 ]