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>

src/main.rs

@@ -0,0 +1,29 @@
+use anyhow::Result;
+use showen_v2::core::config::AppConfig;
+use showen_v2::core::service_manager::ServiceManager;
+
+fn main() -> Result<()> {
+    let config_path = std::env::args()
+        .nth(1)
+        .unwrap_or_else(|| "configs/dog_state_machine.json".to_string());
+
+    println!("ShowenV2 — 数字生命窗口平台");
+    println!("加载配置: {}", config_path);
+
+    let config = AppConfig::from_file(&config_path)?;
+    config.validate_paths()?;
+
+    let mut manager = ServiceManager::new(config);
+
+    // TODO: 按平台注册插件 (Commit 8)
+    // manager.register(Box::new(VideoPlugin::new()));
+    // manager.register(Box::new(HttpPlugin::new()));
+    // manager.register(Box::new(BlePlugin::new()));
+    // manager.register(Box::new(ScreenPlugin::new()));
+    // manager.register(Box::new(WifiPlugin::new()));
+
+    manager.start_all()?;
+    manager.run()?;
+
+    Ok(())
+}