Unlucky Launcher v0.0.1-alpha

Rust 原生单文件 Minecraft 启动器：CLI 完整可用（install/launch/accounts/java/diagnose/agent），
MCP server 接入外部 Agent 工具，GUI 开发中。

crates/core/src/launch/session_sink.rs

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+//! 把会话事件流接到日志泵上：逐行落盘 + 自动窗口出现检测。
+//!
+//! 放在单独文件是为了让 [`crate::launch::session`] 保持“只写事件、只管索引”的单一职责，
+//! 也避免单文件超过 400 行的硬约束。
+
+use std::sync::Mutex;
+
+use crate::launch::pump::{LineSink, LogLine};
+use crate::launch::session::SessionWriter;
+use crate::launch::window_detect::WindowDetector;
+
+/// 会话日志 sink。
+#[derive(Debug)]
+pub struct SessionSink {
+    writer: Mutex<SessionWriter>,
+    detector: Mutex<WindowDetector>,
+}
+
+impl SessionSink {
+    /// 以进程启动时刻为窗口检测起点。
+    pub fn new(writer: SessionWriter) -> Self {
+        Self {
+            writer: Mutex::new(writer),
+            detector: Mutex::new(WindowDetector::new()),
+        }
+    }
+
+    /// 指定窗口检测计时起点（进程 spawn 时刻）。
+    pub fn with_start(writer: SessionWriter, started_at: std::time::Instant) -> Self {
+        Self {
+            writer: Mutex::new(writer),
+            detector: Mutex::new(WindowDetector::with_start(started_at)),
+        }
+    }
+
+    /// 借用写入器（退出分析、结束会话等需要可变访问的场合）。
+    pub fn with_writer<R>(&self, action: impl FnOnce(&mut SessionWriter) -> R) -> Option<R> {
+        self.writer.lock().ok().map(|mut guard| action(&mut guard))
+    }
+
+    /// 是否已检测到游戏窗口。
+    pub fn window_detected(&self) -> bool {
+        match self.writer.lock() {
+            Ok(writer) => writer.is_window_detected(),
+            Err(_) => false,
+        }
+    }
+}
+
+impl LineSink for SessionSink {
+    fn on_line(&self, line: &LogLine) {
+        let detection = match self.detector.lock() {
+            Ok(mut detector) => detector.observe(&line.text),
+            Err(_) => None,
+        };
+        let Ok(mut writer) = self.writer.lock() else {
+            return;
+        };
+        if let Some(detection) = detection {
+            let _ = writer.window_detected(&detection);
+        }
+        let _ = writer.line(line);
+    }
+}