docs(plans): sync roadmap status + paths to post-restructure state

- Plan-01 marked ✅ DONE (INDEX table + P3 tier + BACKLOG row + plan header).
- Plan-06 / Plan-12 dependency on 01 satisfied → 🔓 unblocked (headers + BACKLOG rows).
- Repoint command/path refs in all plans (except Plan-01's migration narrative):
  .specify/{scripts,tests,security,config,templates,governance} -> packages/casan-harness/...;
  golden-runs/traceability-map/docs-input -> apps/okr/domain/...; `cd AINative_OKR_CASAN5`
  -> `cd $(git rev-parse --show-toplevel)`; fix relative links + Plan-13 control-plane location.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

docs/plans/CASAN_PLAN_04_SELFIMPROVE.md

@@ -1,7 +1,7 @@
 # KẾ HOẠCH 04 — Khép vòng tự cải tiến (`casan improve`)
 
 > Status 2026-07-06: **🟡 core implemented + tested (harness-owned).**
-> `.specify/scripts/bash/self-improve.py`: `propose` đọc telemetry (metrics.jsonl +
+> `packages/casan-harness/scripts/bash/self-improve.py`: `propose` đọc telemetry (metrics.jsonl +
 > drift.json) → sinh proposal **dry-run (không ghi)**; `apply` **bắt buộc approval**
 > (đề xuất ≠ áp dụng), áp qua **governed store** (`control-plane-settings.py` → audit),
 > proposal security-sensitive/loosen luôn cần duyệt. Test `phase-selfimprove-tests.sh`