feat: Rust 完整重写 wx-cli（单一二进制，支持 macOS/Linux/Windows）

实现所有核心模块：
- src/crypto/: SQLCipher 4 页解密 + WAL 应用（AES-256-CBC）
- src/scanner/: 三平台内存扫描（macOS Mach VM / Linux /proc/mem / Windows ReadProcessMemory）
- src/daemon/: tokio 异步 daemon，Unix socket IPC，mtime-aware DB 缓存，WAL 监听推送
- src/cli/: clap CLI，自动启动 daemon，完整命令实现
- src/config.rs: 跨平台配置加载，兼容 Python 版 config.json 格式
- src/ipc.rs: 换行符分隔 JSON 协议，与 Python 版兼容
- .github/workflows/release.yml: 四平台自动构建发布

cargo build --release 验证通过，生成 4.8MB macOS arm64 单一二进制

Cargo.toml

@@ -0,0 +1,68 @@
+[package]
+name = "wx"
+version = "0.1.0"
+edition = "2021"
+
+[[bin]]
+name = "wx"
+path = "src/main.rs"
+
+[dependencies]
+# CLI
+clap = { version = "4", features = ["derive"] }
+
+# 异步
+tokio = { version = "1", features = ["full"] }
+
+# 序列化
+serde = { version = "1", features = ["derive"] }
+serde_json = "=1.0.140"
+
+# SQLite
+rusqlite = { version = "0.31", features = ["bundled"] }
+
+# 加密
+aes = "0.8"
+cbc = { version = "0.1", features = ["alloc"] }
+hmac = "0.12"
+sha2 = "0.10"
+pbkdf2 = "0.12"
+
+# 解压
+zstd = "0.13"
+
+# IPC (Unix socket + Windows named pipe 统一)
+interprocess = { version = "2", features = ["tokio"] }
+
+# 错误处理
+anyhow = "1"
+
+# 时间
+chrono = { version = "0.4", features = ["serde"] }
+
+# 跨平台路径
+dirs = "5"
+
+# MD5 (联系人表名 Msg_<md5>)
+md5 = "0.7"
+
+# 正则表达式
+regex = "1"
+
+[target.'cfg(target_os = "macos")'.dependencies]
+libc = "0.2"
+
+[target.'cfg(target_os = "windows")'.dependencies]
+windows = { version = "0.58", features = [
+    "Win32_System_Diagnostics_Debug",
+    "Win32_System_Diagnostics_ToolHelp",
+    "Win32_System_Threading",
+    "Win32_Foundation",
+    "Win32_System_Memory",
+] }
+
+[profile.release]
+opt-level = 3
+lto = true
+codegen-units = 1
+strip = true