feat: add internal ZCLAW kernel crates to git tracking

crates/zclaw-runtime/src/stream.rs

@@ -0,0 +1,54 @@
+//! Streaming utilities
+
+use tokio::sync::mpsc;
+use zclaw_types::Result;
+
+/// Stream event for LLM responses
+#[derive(Debug, Clone)]
+pub enum StreamEvent {
+    /// Text delta received
+    TextDelta(String),
+    /// Thinking delta received
+    ThinkingDelta(String),
+    /// Tool use started
+    ToolUseStart { id: String, name: String },
+    /// Tool use input chunk
+    ToolUseInput { id: String, chunk: String },
+    /// Tool use completed
+    ToolUseEnd { id: String, input: serde_json::Value },
+    /// Response completed
+    Complete { input_tokens: u32, output_tokens: u32 },
+    /// Error occurred
+    Error(String),
+}
+
+/// Stream sender wrapper
+pub struct StreamSender {
+    tx: mpsc::Sender<StreamEvent>,
+}
+
+impl StreamSender {
+    pub fn new(tx: mpsc::Sender<StreamEvent>) -> Self {
+        Self { tx }
+    }
+
+    pub async fn send_text(&self, delta: impl Into<String>) -> Result<()> {
+        self.tx.send(StreamEvent::TextDelta(delta.into())).await.ok();
+        Ok(())
+    }
+
+    pub async fn send_thinking(&self, delta: impl Into<String>) -> Result<()> {
+        self.tx.send(StreamEvent::ThinkingDelta(delta.into())).await.ok();
+        Ok(())
+    }
+
+    pub async fn send_complete(&self, input_tokens: u32, output_tokens: u32) -> Result<()> {
+        self.tx.send(StreamEvent::Complete { input_tokens, output_tokens }).await.ok();
+        Ok(())
+    }
+
+    pub async fn send_error(&self, error: impl Into<String>) -> Result<()> {
+        self.tx.send(StreamEvent::Error(error.into())).await.ok();
+        Ok(())
+    }
+}