feat(addressables): 提取 m_Crc 并提供 size/CRC 校验 API（issue #2）

Addressables catalog 里的 m_Crc（bundle IEEE CRC-32）此前从未解析；
声明的 size 也只作元数据、无校验能力。本次：

- ResourceEntry 新增 crc: Option<u32>（serde default 向后兼容），
  compact 与 expanded 两种 catalog 形态均解析 m_Crc/m_Crc→crc
- core 新增 crc32_ieee（IEEE CRC-32，等价 zlib/Unity m_Crc）与
  ResourceEntry::{declared_crc, verify_downloaded_bytes}：按声明的
  size/crc 校验字节，0 视为「无 CRC」跳过
- SqliteResourceRepository 持久化 crc 列，旧库经幂等 ensure_column
  迁移补列（pragma_table_info 判断后 ALTER）
- golden 投影与 fixture 补 crc 字段，验证真实形态 catalog 提取贯通

校验 API 暂不接入 import 覆盖路径（该路径按 CAS id 重写 hash/size 是
既定语义，且合成测试的声明值不匹配实际字节）；接入下载/导入校验留
待 G-011。

验证：core crc32 标准向量 + verify 分支单测、expanded 形态非零 crc
提取单测、golden 端到端；core/adapters/infrastructure 全测试 + fmt +
clippy --all-targets -D warnings 全绿。

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

adapters/src/manifest/addressables.rs

@@ -272,6 +272,12 @@ impl AddressablesCatalogDriver {
             .unwrap_or_default();
 
         let dependencies = Self::dependencies_from_entry(value);
+        let crc = value
+            .get("crc")
+            .or_else(|| value.get("Crc"))
+            .or_else(|| value.get("m_Crc"))
+            .and_then(|value| value.as_u64())
+            .and_then(|value| u32::try_from(value).ok());
 
         Some(ResourceEntry {
             path: path.to_string(),
@@ -280,6 +286,7 @@ impl AddressablesCatalogDriver {
             resource_type: Self::resource_type_for_path(path),
             address,
             dependencies,
+            crc,
         })
     }
 
@@ -376,6 +383,7 @@ impl AddressablesCatalogDriver {
                     resource_type: Self::resource_type_for_path(path),
                     address: None,
                     dependencies: Vec::new(),
+                    crc: None,
                 })
             })
             .collect()
@@ -413,6 +421,7 @@ impl AddressablesCatalogDriver {
                 resource_type,
                 address: None,
                 dependencies: Vec::new(),
+                crc: None,
             });
         }
 
@@ -483,6 +492,7 @@ impl AddressablesCatalogDriver {
                         Some(primary_key)
                     },
                     dependencies,
+                    crc: extra.crc,
                 })
             })
             .collect()
@@ -619,6 +629,11 @@ impl AddressablesCatalogDriver {
                 .and_then(|value| value.as_str())
                 .map(ToOwned::to_owned),
             bundle_size: json.get("m_BundleSize").and_then(|value| value.as_u64()),
+            // m_Crc 是 bundle 的 IEEE CRC-32；0 表示不做 CRC 校验，忠实保留原值。
+            crc: json
+                .get("m_Crc")
+                .and_then(|value| value.as_u64())
+                .and_then(|value| u32::try_from(value).ok()),
         }
     }
 
@@ -821,6 +836,7 @@ struct AddressablesExtraData {
     hash: Option<String>,
     bundle_name: Option<String>,
     bundle_size: Option<u64>,
+    crc: Option<u32>,
 }
 
 impl Default for AddressablesCatalogDriver {
@@ -954,6 +970,7 @@ mod tests {
                     "internal_id": "synthetic/minimal.bundle",
                     "hash": "synthetic-entry-hash",
                     "size": 119,
+                    "crc": 3735928559,
                     "address": "Character_001",
                     "dependencies": ["synthetic/shared.bundle"]
                 },
@@ -971,6 +988,9 @@ mod tests {
         assert_eq!(manifest.resources[0].path, "synthetic/minimal.bundle");
         assert_eq!(manifest.resources[0].hash, "synthetic-entry-hash");
         assert_eq!(manifest.resources[0].size, 119);
+        // m_Crc（此处 0xDEADBEEF）应被提取；缺该字段的条目为 None。
+        assert_eq!(manifest.resources[0].crc, Some(0xDEAD_BEEF));
+        assert_eq!(manifest.resources[1].crc, None);
         assert_eq!(
             manifest.resources[0].address.as_deref(),
             Some("Character_001")

adapters/tests/golden/real_addressables.json

@@ -12,7 +12,8 @@
       "address": "academy-_mxload-prefabs-2025-07-02_assets_all_638981069.bundle",
       "dependencies": [
         "shared_assets_all_123.bundle"
-      ]
+      ],
+      "crc": 0
     },
     {
       "path": "academy-_mxload-prefabs-2025-08-26_assets_all_1581352935.bundle",
@@ -20,7 +21,8 @@
       "size": 162134,
       "resource_type": "AssetBundle",
       "address": "academy-_mxload-prefabs-2025-08-26_assets_all_1581352935.bundle",
-      "dependencies": []
+      "dependencies": [],
+      "crc": 0
     },
     {
       "path": "shared_assets_all_123.bundle",
@@ -28,7 +30,8 @@
       "size": 153480,
       "resource_type": "AssetBundle",
       "address": "shared_assets_all_123.bundle",
-      "dependencies": []
+      "dependencies": [],
+      "crc": 0
     }
   ],
   "metadata": {

adapters/tests/real_addressables_golden.rs

@@ -22,6 +22,7 @@ async fn parses_real_shape_addressables_catalog_against_golden() {
                 "resource_type": format!("{:?}", resource.resource_type),
                 "address": resource.address,
                 "dependencies": resource.dependencies,
+                "crc": resource.crc,
             })
         }).collect::<Vec<_>>(),
         "metadata": manifest.metadata.extra,