feat(player): standardize independent playback; reset slot key memory on replay#203
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Bump SpriteStudio-SDK to the standardized independent-playback runtime (EffectSlot/InstanceSlot last-started-key arbitration + ss_*_slot_reset). play() always heads out (resume is pause()'s toggle), so clear every effect/instance slot's "last started key" memory on play() via the new ss_effect_slot_reset / ss_instance_slot_reset C-API. Without this a re-played animation would debounce an already-fired independent effect / instance as the same key and never re-fire it (spec §6). The host only iterates the slots it owns (and recurses into instance children); the reset logic itself lives in the runtime.
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概要
独立再生（independent）の確定スペック対応の プレーヤ側 PR です。SDK 側 PR（cri-middleware/SpriteStudio-SDK#270）の bump を含みます。
変更内容
50123d5→088d2bc（独立再生キー調停の確定 +ss_*_slot_resetC-API。develop 最新f0036aa取り込み込み）。play()でスロット記憶をリセット:play()は常に頭出し（再開はpause()のトグルが兼任）なので、各 Effect / Instance スロットの「最後に再生を始めたキー」記憶を新 C-APIss_effect_slot_reset/ss_instance_slot_resetでクリア。これが無いと、再 play したアニメで既発火の独立エフェクト / インスタンスが「同一キー → 無視」となり再発火しない（spec §6）。依存・マージ順
088d2bcを指します。先に SDK PR #270 をマージしてから本 PR をマージしてください（順序が逆だと submodule 参照が解決できません）。検証
備考:
ss_player/runtime/include/ssruntime.hは.gitignore対象（cbindgen 生成物）のため差分には含まれません。runtime 再ビルド時に新宣言が自動生成されます。