fix(release):完善当前分发证明与质量门禁

internal/api/testdata/contract/README.md

@@ -7,7 +7,9 @@ contract fixture。JSON 由 Rust 代码路径产出后归一化，只替换本
 覆盖范围：
 
 - `catalog.status` 可用与不可用响应。
-- `resource.manifest` 第一页分页响应。
+- `resource.manifest` 第一页分页响应，包含 release/publication/mapping/manifest
+  identity 和 generation 绑定字段。
+- `release.attestation` 当前 official health/publication proof。
 - 对应 release 的 `official-sync-snapshot.json`。
 - `launcher_metadata` 与 `game_main_config_bootstrap` 的 Go mirror 解码。
 - Rust Glossary V1 query 响应，覆盖 alias、approved review、source provenance 和完整 history。

internal/api/testdata/contract/release-attestation.json

@@ -0,0 +1,18 @@
+{
+  "available": true,
+  "channel": "official",
+  "diagnostics": [],
+  "entry_count": 2,
+  "integrity_status": "verified",
+  "manifest_identity": "${MANIFEST_IDENTITY}",
+  "mapping_identity": "${MAPPING_IDENTITY}",
+  "max_age_seconds": 900,
+  "publication_identity": "${PUBLICATION_IDENTITY}",
+  "ready": true,
+  "release_id": "${VERSION_ID}",
+  "resource_root": "${RESOURCE_ROOT}",
+  "status": "ready",
+  "status_code": "distribution.ready",
+  "verification_generation": 7,
+  "verified_at": 1000
+}

internal/api/testdata/contract/resource-manifest.page0.json

@@ -1,5 +1,6 @@
 {
   "available": true,
+  "channel": "official",
   "entries": [
     {
       "blake3": "0000000000000000000000000000000000000000000000000000000000000000",
@@ -14,9 +15,14 @@
       "url": "https://prod-clientpatch.bluearchiveyostar.com/{addressables-root}/TableBundles/TableCatalog.hash"
     }
   ],
+  "generation": 7,
   "limit": 2,
+  "manifest_identity": "${MANIFEST_IDENTITY}",
   "manifest_version": 1,
+  "mapping_identity": "${MAPPING_IDENTITY}",
   "offset": 0,
+  "publication_identity": "${PUBLICATION_IDENTITY}",
+  "release_id": "${VERSION_ID}",
   "resource_root": "${RESOURCE_ROOT}",
   "total_entries": 2
 }