chore(task): archive 06-27-fix-kg-compute

.trellis/tasks/archive/2026-06/06-27-fix-kg-compute/check.jsonl

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+{"_example": "Fill with {\"file\": \"<path>\", \"reason\": \"<why>\"}. Put spec/research files only — no code paths. Run `python3 .trellis/scripts/get_context.py --mode packages` to list available specs. Delete this line once real entries are added."}

.trellis/tasks/archive/2026-06/06-27-fix-kg-compute/implement.jsonl

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+{"_example": "Fill with {\"file\": \"<path>\", \"reason\": \"<why>\"}. Put spec/research files only — no code paths. Run `python3 .trellis/scripts/get_context.py --mode packages` to list available specs. Delete this line once real entries are added."}

.trellis/tasks/archive/2026-06/06-27-fix-kg-compute/prd.md

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+# 修复 KeyGen 计算路径
+
+## Goal
+修复 `mlkem_top.v` 中 KeyGen 的占位状态，实现 t_hat、pk、sk 的实际计算，使 `./run_tb.sh top` 中 KeyGen 产生非零输出。
+
+## Current Issues
+1. KeyGen 的 t_hat 计算（poly_mul + poly_arith）是占位：`phase_done <= 1'b1`
+2. `pk_o_r` / `sk_o_r` 从未被赋值（默认 0）
+3. `rng_valid_i` 竞态（可能已跨过，仿真确认 FSM 在跑）
+
+## Fix Plan
+1. 实现 `S_KG_TMUL_LOAD/COMP/OUT` 状态 → 调用 poly_mul_sync 计算 t_hat
+2. 实现 `S_KG_ADD` → 调用 poly_arith_sync
+3. 在 `S_KG_DONE` 中赋值 `pk_o_r = {t_hat polys, rho}` 和 `sk_o_r = {s_hat polys}`
+4. 验证：`./run_tb.sh top` KeyGen 输出非零
+
+## Out of Scope
+- Encaps/Decaps 修复
+- pk/sk ByteEncode 编码（先输出 raw 12-bit coeffs）
+- KAT 数值完全匹配

.trellis/tasks/archive/2026-06/06-27-fix-kg-compute/task.json

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+{
+  "id": "fix-kg-compute",
+  "name": "fix-kg-compute",
+  "title": "修复KeyGen计算路径并输出正确的pk/sk",
+  "description": "",
+  "status": "completed",
+  "dev_type": null,
+  "scope": null,
+  "package": null,
+  "priority": "P2",
+  "creator": "FallenSigh",
+  "assignee": "FallenSigh",
+  "createdAt": "2026-06-27",
+  "completedAt": "2026-06-27",
+  "branch": null,
+  "base_branch": "main",
+  "worktree_path": null,
+  "commit": null,
+  "pr_url": null,
+  "subtasks": [],
+  "children": [],
+  "parent": null,
+  "relatedFiles": [],
+  "notes": "",
+  "meta": {}
+}