diff --git a/evals/markdown/README.md b/evals/markdown/README.md
index 47eb305..26baa3a 100644
--- a/evals/markdown/README.md
+++ b/evals/markdown/README.md
@@ -165,15 +165,41 @@ docker exec hyungi_document_server-fastapi-1 python /app/scripts/phase2_backfill
 - inventory 의 `forecast_skip_reason='none'` 만 선정 후보.
 - 시드 고정 → 재실행 시 동일 sample.
 
+### 경로 정책 (2-B canary vs 2-C nightly)
+
+`/app/scripts/` 와 `/app/evals/` 는 parent repo (`~/Documents/code/hyungi_Document_Server`, branch=main) 의 read-only bind-mount. `docker cp ... :/app/scripts/...` 는 read-only 위반으로 실패. `docker compose --build` 은 검색 실험 soft lock 위반. → 단계별로 다른 경로 사용:
+
+| 단계 | script 경로 | sample CSV 경로 | 메커니즘 |
+|---|---|---|---|
+| **2-B canary (pre-merge)** | `/app/logs/phase2_backfill.py` | `/app/logs/phase2_canary_sample.csv` | `docker cp` worktree → /app/logs (rw bind-mount) |
+| **2-C nightly (post-merge canonical)** | `/app/scripts/phase2_backfill.py` | `/app/evals/markdown/phase2_*` | feat/phase2-backfill main 머지 + parent `git pull` 후 bind-mount 자동 활성 |
+
+**2-B 임시 sync** (canary 실행 직전 1회):
+```bash
+docker cp ~/Documents/code/hyungi_Document_Server_phase2/scripts/phase2_backfill.py \
+  hyungi_document_server-fastapi-1:/app/logs/phase2_backfill.py
+docker cp ~/Documents/code/hyungi_Document_Server_phase2/evals/markdown/phase2_canary_sample.csv \
+  hyungi_document_server-fastapi-1:/app/logs/phase2_canary_sample.csv
+```
+
+**2-C 진입 시점** (canary GO 결정 후):
+```bash
+cd ~/Documents/code/hyungi_Document_Server_phase2 && git push origin feat/phase2-backfill
+cd ~/Documents/code/hyungi_Document_Server && git fetch origin \
+  && git merge --ff-only origin/feat/phase2-backfill && git push origin main
+```
+
+이유: 미검증 코드를 main 에 미리 박지 않음 / canary 결과 따라 worktree 에서 hot-fix 가능 / nightly cron 은 canonical path 만 사용 (cp 단계 없음).
+
 ### enqueue (one-shot, 사용자 승인 게이트)
 ```bash
-# dry-run (default)
-docker exec hyungi_document_server-fastapi-1 python /app/scripts/phase2_backfill.py enqueue \
-  --csv /app/evals/markdown/phase2_canary_sample.csv
+# dry-run (default) — 2-B 단계 = /app/logs 임시 경로 (위 §"경로 정책" 참조)
+docker exec hyungi_document_server-fastapi-1 python /app/logs/phase2_backfill.py enqueue \
+  --csv /app/logs/phase2_canary_sample.csv
 
 # actual (사용자 승인 후)
-docker exec hyungi_document_server-fastapi-1 python /app/scripts/phase2_backfill.py enqueue \
-  --csv /app/evals/markdown/phase2_canary_sample.csv --no-dry-run
+docker exec hyungi_document_server-fastapi-1 python /app/logs/phase2_backfill.py enqueue \
+  --csv /app/logs/phase2_canary_sample.csv --no-dry-run
 ```
 - marker-service `/ready` 사전 검증.
 - `enqueue_stage` idempotent — 중복 호출 안전.