Update: 将子项目从 submodule 转为完整内容

- 移除 GovAI, nomifun-tauri, 算力盒子 的 submodule 引用
- 添加所有子项目的完整源代码
- 保留原始 .git 为 .git.bak 备份

nomifun-tauri/crates/backend/nomifun-assets/Cargo.toml

@@ -0,0 +1,17 @@
+[package]
+name = "nomifun-assets"
+version.workspace = true
+edition.workspace = true
+
+[dependencies]
+nomifun-common.workspace = true
+axum.workspace = true
+http.workspace = true
+mime_guess.workspace = true
+rust-embed.workspace = true
+sha2.workspace = true
+
+[dev-dependencies]
+http-body-util.workspace = true
+tokio.workspace = true
+tower = { workspace = true, features = ["util"] }