council(finalize): SecurityEngineer - mark all tasks complete in plan.md

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

plan.md

@@ -70,12 +70,16 @@
 
 ## 依赖
 
-- 依赖 BackendArchitect 的根因分析（Task 1-8）和 FrontendDev 的前端分析
+- BackendArchitect：后端规格去重逻辑分析
+- SecurityEngineer：安全风险评估
+- FrontendDev：前端 fallback 行为分析
 - 最终汇总由 SecurityEngineer 写入 `reviews/council-ghost-spec-summary.md`
 
 ---
 
 ## 输出报告
 
-- `reviews/SecurityEngineer-GHOST_SPEC_SECURITY.md` — 详细安全审计报告
-- `reviews/council-ghost-spec-summary.md` — 三方汇总报告
+- `reviews/SecurityEngineer-GHOST_SPEC_SECURITY.md` — 详细安全审计报告 ✅
+- `reviews/council-ghost-spec-FrontendDev.md` — 前端调研报告 ✅
+- `reviews/council-ghost-spec-BackendArchitect.md` — 后端调研报告 ✅
+- `reviews/council-ghost-spec-summary.md` — 三方汇总报告 ✅