v0.41.12: BB-15 OCI cross-repo blob mount case

Register `OCI cross-repo blob mount` (plan-20261001 BB-15): mounting a
blob from a source repository that holds it returns 201 and the target
serves it; a source without the blob falls back to a new 202 upload
session with Docker-Upload-UUID. Adds the oci_put_blob helper. Marks
BB-14 done.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_018bJDjze83ToyPysYzmxxWS
Signed-off-by: Eli Ma <eli@patch.sh>

Author: genedna

Cargo.lock

@@ -1,6 +1,6 @@
 [package]
 name = "mega2"
-version = "0.41.11"
+version = "0.41.12"
 edition = "2024"
 license = "MIT OR Apache-2.0"
 description = "Monorepo engine and Git hosting server for AI agents: trunk-based storage, Git Smart HTTP, Git LFS, OCI registry, and Agent Session Capture"

Cargo.toml

@@ -395,7 +395,7 @@ CASE='OCI ping'   # 换成要跑的 case 名
 docker compose -p mega2-trunk -f docker/docker-compose-storage-only.yml --profile interop exec -T -e MEGA2_SMOKE_CASE="$CASE" interop-smoke bash /repo/scripts/oci_client_smoke_storage_only.sh 2>&1 | tee target/tmp/bb-oci-case.log
 ```
 
-已登记 case：`OCI ping`、`OCI oras push and pull`、`OCI reject unauthenticated push`、`OCI chunked blob upload`。
+已登记 case：`OCI ping`、`OCI oras push and pull`、`OCI reject unauthenticated push`、`OCI chunked blob upload`、`OCI cross-repo blob mount`。
 
 不设 `MEGA2_SMOKE_CASE` 时整跑全部默认栈 case；opt-in case（auth-none）只经 `scripts/bb_optin_run.sh none oci_client_smoke_storage_only.sh '<case>' <log>` 运行。
 

docs/deploy-trunk.md

@@ -1172,7 +1172,7 @@
 ### Task BB-14: OCI chunked blob upload
 
 **Task type:** `implementation`  
-**Lifecycle / Acceptance:** `in-progress` / `remote-pending`（v0.41.11；Codex R2 PASS；C 组 2023 测试通过；待 D 组 `docker` job）  
+**Lifecycle / Acceptance:** `done` / `complete`（v0.41.11；C 组 2023 测试通过；D 组 docker run 36940801754 success）  
 **Description:** 在 `scripts/oci_client_smoke_storage_only.sh` 注册 case `OCI chunked blob upload`。`curl` 走 POST → 两次 PATCH → 状态 GET → PUT `?digest=`。 唯一行为轴：分块上传状态机。  
 **Out of scope:** 其它 case（各自成卡）；改 `src/**`（产品缺陷按 ADR-BB-08 立 `FIX-BB-*`）；改既有 smoke 脚本（GC-BB-06）；以 cargo IT 作 VER（GC-BB-04）。  
 **Current evidence:**
@@ -1222,7 +1222,7 @@
 ### Task BB-15: OCI cross-repo blob mount
 
 **Task type:** `implementation`  
-**Lifecycle / Acceptance:** `pending` / （空）  
+**Lifecycle / Acceptance:** `in-progress` / `remote-pending`（v0.41.12；Codex R1 PASS；C 组 2023 测试通过；待 D 组 `docker` job）  
 **Description:** 在 `scripts/oci_client_smoke_storage_only.sh` 注册 case `OCI cross-repo blob mount`。源仓单体上传 blob 后向目标仓 mount；再对无此 blob 的源仓 mount。 唯一行为轴：跨仓库挂载。  
 **Out of scope:** 其它 case（各自成卡）；改 `src/**`（产品缺陷按 ADR-BB-08 立 `FIX-BB-*`）；改既有 smoke 脚本（GC-BB-06）；以 cargo IT 作 VER（GC-BB-04）。  
 **Current evidence:**

docs/plan/plan-20261001.md

@@ -167,9 +167,37 @@ case_oci_chunked_upload() {
     [ "$(oci_header "$d/h4" docker-content-digest)" = "$dg" ] || { echo "Docker-Content-Digest mismatch" >&2; return 1; }
 }
 
+# oci_put_blob <repo> <file>: monolithic upload, prints the HTTP status.
+oci_put_blob() {
+    oci_curl -u "bb:$TOKEN" -X POST -o /dev/null -w '%{http_code}' \
+        -H 'Content-Type: application/octet-stream' --data-binary @"$2" \
+        "$MEGA2_BASE_URL/v2/$1/blobs/uploads/?digest=$(oci_digest "$2")"
+}
+
+# --- BB-15 OCI cross-repo blob mount ------------------------------------
+case_oci_cross_repo_mount() {
+    local d="$WORK/mount" src="bb-$RUN_ID/mount-src" dst="bb-$RUN_ID/mount-dst" code dg
+    oci_case_begin
+    mkdir -p "$d"
+    head -c 512 /dev/urandom > "$d/blob"
+    dg=$(oci_digest "$d/blob")
+    code=$(oci_put_blob "$src" "$d/blob")
+    [ "$code" = 201 ] || { echo "source upload returned $code" >&2; return 1; }
+    code=$(oci_curl -u "bb:$TOKEN" -X POST -o /dev/null -w '%{http_code}' \
+        "$MEGA2_BASE_URL/v2/$dst/blobs/uploads/?mount=$dg&from=$src")
+    [ "$code" = 201 ] || { echo "mount from a source holding the blob returned $code" >&2; return 1; }
+    code=$(oci_curl -I -o /dev/null -w '%{http_code}' "$MEGA2_BASE_URL/v2/$dst/blobs/$dg")
+    [ "$code" = 200 ] || { echo "HEAD of the mounted blob returned $code" >&2; return 1; }
+    code=$(oci_curl -u "bb:$TOKEN" -X POST -D "$d/h" -o /dev/null -w '%{http_code}' \
+        "$MEGA2_BASE_URL/v2/$dst/blobs/uploads/?mount=$dg&from=bb-$RUN_ID/mount-empty")
+    [ "$code" = 202 ] || { echo "mount from a source without the blob returned $code" >&2; return 1; }
+    [ -n "$(oci_header "$d/h" docker-upload-uuid)" ] || { echo "fallback session without Docker-Upload-UUID" >&2; return 1; }
+}
+
 run_case "OCI ping" case_oci_ping
 run_case "OCI oras push and pull" case_oci_oras_push_pull
 run_case "OCI reject unauthenticated push" case_oci_reject_unauth_push
 run_case "OCI chunked blob upload" case_oci_chunked_upload
+run_case "OCI cross-repo blob mount" case_oci_cross_repo_mount
 
 finish