docs(status): P-002执行案质量门通过，清理废弃引用，更新流水线状态

- P-002 交互/收集/角色控制三系统执行案质量门通过
- 新增 P-002-review-r2.md 第二次审查报告
- current.md 流水线状态更新：③✅ → ④🟡可开始
- 清理 game-pm/game-dev agent 中已废弃的 current.md/roadmap.md 引用
- 删除旧 agent-memory 和 game-pm.zh-CN.md

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

.claude/agents/game-dev.md

@@ -265,7 +265,6 @@ You must:
 - `.claude/refs/development-workflow.md` — Pipeline definitions, quality standards
 - `.claude/refs/pm-role-specification.md` — PM role, quality gate dimensions
 - `.claude/refs/design-agent-specification.md` — 策划 role, execution document format
-- `docs/plans/current.md` — **已废弃**，进度追踪已迁移到 Gitea Issues
 - Gitea Issues (via CLI) — Check your assigned tasks and pipeline status:
   ```bash
   node scripts/gitea.js --role dev issue list --milestone <current-version>