init: ShowenV2 项目骨架 — 数字生命窗口平台

- core/ 跨平台内核骨架 (Plugin trait, Message, ServiceManager, Config)
- plugins/ 空桩 (video, http, ble, screen, wifi)
- PROGRESS.md 进度跟踪, TEAM.md 团队档案
- cargo check 零 warning 通过

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Cargo.toml

@@ -0,0 +1,22 @@
+[package]
+name = "showen_v2"
+version = "0.2.0"
+authors = ["showen"]
+edition = "2018"
+
+[dependencies]
+anyhow = "1"
+serde = { version = "1", features = ["derive"] }
+serde_json = "1"
+rand = "0.8"
+
+# 跨平台插件依赖
+opencv = { version = "0.66", default-features = false, features = ["highgui", "imgproc", "videoio"] }
+tokio = { version = "1", features = ["macros", "rt-multi-thread", "process", "sync"] }
+warp = { version = "0.3.7", default-features = false, features = ["multipart"] }
+bytes = "1"
+futures-util = "0.3"
+
+# Linux 特有插件依赖
+dbus = "0.9"
+dbus-crossroads = "0.5"