[Art V3] Integrate approved production assets into M1

[BotTony329]

What changed

• generated and committed production-ready transparent Art V3 animation strips for Player, Ghost Melee, Ghost Archer, and mounted Gate Warden
• added frame maps and metadata with FPS, pivots, foot positions, and combat event frames
• replaced live actor, Ghost Arrow, floor, wall, gate, fog, Ghost Fire, combat-effect, and basic HUD icon placeholders
• added presentation-only slash, hit flash, blood, death dissolve, damage numbers, small camera shake, and small hit stop through EventBus observation
• added deterministic production build and runtime screenshot tooling

Architecture impact

Gameplay architecture is unchanged. RunState, CombatResolver, EnemyBase, state machines, collision shapes, attack shapes, and balance data were not modified. Character visuals use scene-local scale/offset declarations and preserve actor origins.

Validation

• Godot 4.7.1 import completed without missing textures
• full suite: 64 tests, 438 assertions, 0 failures
• production validation checks frame counts, dimensions, alpha margins, declared foot positions, per-frame visible baselines, and live V3 scene references
• real-renderer captures are committed under docs/screenshots/

Known limitations

• player jump temporarily reuses two idle frames because Sprint 01 was restricted to idle/walk/attack/hurt/death
• deep/tree/chain parallax layers and health/stamina bar frames remain pre-V3 by approved scope
• repeated settled frames preserve existing framework counts where the approved boards contain fewer unique poses

Do not merge until Art Director and Game Director visual review is complete.