chore: 提交所有工作进度 — SaaS 后端增强、Admin UI、桌面端集成

包含大量 SaaS 平台改进、Admin 管理后台更新、桌面端集成完善、
文档同步、测试文件重构等内容。为 QA 测试准备干净工作树。

Cargo.toml

@@ -57,7 +57,7 @@ chrono = { version = "0.4", features = ["serde"] }
 uuid = { version = "1", features = ["v4", "v5", "serde"] }
 
 # Database
-sqlx = { version = "0.7", features = ["runtime-tokio", "sqlite"] }
+sqlx = { version = "0.7", features = ["runtime-tokio", "sqlite", "postgres"] }
 libsqlite3-sys = { version = "0.27", features = ["bundled"] }
 
 # HTTP client (for LLM drivers)
@@ -94,6 +94,10 @@ regex = "1"
 # Shell parsing
 shlex = "1"
 
+# WASM runtime
+wasmtime = { version = "43", default-features = false, features = ["cranelift"] }
+wasmtime-wasi = { version = "43" }
+
 # Testing
 tempfile = "3"