feat: add phase1 task planner flow

src/agent/mod.rs

@@ -0,0 +1,63 @@
+pub mod planner;
+
+use crate::pipe::{AgentMessage, BrowserMessage, BrowserPipeTool, PipeError, Transport};
+
+pub fn execute_task<T: Transport>(
+    transport: &T,
+    browser_tool: &BrowserPipeTool<T>,
+    instruction: &str,
+) -> Result<String, PipeError> {
+    let plan = planner::plan_instruction(instruction)
+        .map_err(|err| PipeError::Protocol(err.to_string()))?;
+
+    for step in &plan.steps {
+        transport.send(&AgentMessage::LogEntry {
+            level: "info".to_string(),
+            message: step.log_message.clone(),
+        })?;
+
+        let result = browser_tool.invoke(
+            step.action.clone(),
+            step.params.clone(),
+            &step.expected_domain,
+        )?;
+        if !result.success {
+            return Err(PipeError::Protocol(format!(
+                "browser action failed: {}",
+                result.data
+            )));
+        }
+    }
+
+    Ok(plan.summary)
+}
+
+pub fn handle_browser_message<T: Transport>(
+    transport: &T,
+    browser_tool: &BrowserPipeTool<T>,
+    message: BrowserMessage,
+) -> Result<(), PipeError> {
+    match message {
+        BrowserMessage::SubmitTask { instruction } => {
+            let completion = match execute_task(transport, browser_tool, &instruction) {
+                Ok(summary) => AgentMessage::TaskComplete {
+                    success: true,
+                    summary,
+                },
+                Err(err) => AgentMessage::TaskComplete {
+                    success: false,
+                    summary: err.to_string(),
+                },
+            };
+            transport.send(&completion)
+        }
+        BrowserMessage::Init { .. } => {
+            eprintln!("ignoring duplicate init after handshake");
+            Ok(())
+        }
+        BrowserMessage::Response { seq, .. } => {
+            eprintln!("ignoring unsolicited response: seq={seq}");
+            Ok(())
+        }
+    }
+}

src/agent/planner.rs

@@ -0,0 +1,72 @@
+use serde_json::{json, Value};
+use thiserror::Error;
+
+use crate::pipe::Action;
+
+const BAIDU_URL: &str = "https://www.baidu.com";
+const BAIDU_DOMAIN: &str = "www.baidu.com";
+const BAIDU_INPUT_SELECTOR: &str = "#kw";
+const BAIDU_SEARCH_BUTTON_SELECTOR: &str = "#su";
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct PlannedStep {
+    pub action: Action,
+    pub params: Value,
+    pub expected_domain: String,
+    pub log_message: String,
+}
+
+#[derive(Debug, Clone, PartialEq)]
+pub struct TaskPlan {
+    pub summary: String,
+    pub steps: Vec<PlannedStep>,
+}
+
+#[derive(Debug, Error, Clone, PartialEq, Eq)]
+pub enum PlannerError {
+    #[error("unsupported instruction: {0}")]
+    UnsupportedInstruction(String),
+    #[error("missing search query in instruction")]
+    MissingQuery,
+}
+
+pub fn plan_instruction(instruction: &str) -> Result<TaskPlan, PlannerError> {
+    let trimmed = instruction.trim();
+    let query = trimmed
+        .strip_prefix("打开百度搜索")
+        .or_else(|| trimmed.strip_prefix("打开百度并搜索"))
+        .ok_or_else(|| PlannerError::UnsupportedInstruction(trimmed.to_string()))?
+        .trim();
+
+    if query.is_empty() {
+        return Err(PlannerError::MissingQuery);
+    }
+
+    Ok(TaskPlan {
+        summary: format!("已在百度搜索{query}"),
+        steps: vec![
+            PlannedStep {
+                action: Action::Navigate,
+                params: json!({ "url": BAIDU_URL }),
+                expected_domain: BAIDU_DOMAIN.to_string(),
+                log_message: "navigate https://www.baidu.com".to_string(),
+            },
+            PlannedStep {
+                action: Action::Type,
+                params: json!({
+                    "selector": BAIDU_INPUT_SELECTOR,
+                    "text": query,
+                    "clear_first": true
+                }),
+                expected_domain: BAIDU_DOMAIN.to_string(),
+                log_message: format!("type {query} into {BAIDU_INPUT_SELECTOR}"),
+            },
+            PlannedStep {
+                action: Action::Click,
+                params: json!({ "selector": BAIDU_SEARCH_BUTTON_SELECTOR }),
+                expected_domain: BAIDU_DOMAIN.to_string(),
+                log_message: format!("click {BAIDU_SEARCH_BUTTON_SELECTOR}"),
+            },
+        ],
+    })
+}

src/lib.rs

@@ -1,3 +1,4 @@
+pub mod agent;
 pub mod pipe;
 pub mod security;
 
@@ -5,6 +6,7 @@ use std::path::PathBuf;
 use std::sync::Arc;
 use std::time::Duration;
 
+use agent::handle_browser_message;
 use pipe::{perform_handshake, BrowserPipeTool, PipeError, StdioTransport, Transport};
 use security::MacPolicy;
 
@@ -19,7 +21,7 @@ pub fn run() -> Result<(), PipeError> {
     let transport = Arc::new(StdioTransport::new(std::io::stdin(), std::io::stdout()));
     let handshake = perform_handshake(transport.as_ref(), Duration::from_secs(5))?;
     let mac_policy = MacPolicy::load_from_path(default_rules_path())?;
-    let _browser_tool = BrowserPipeTool::new(transport.clone(), mac_policy, handshake.session_key)
+    let browser_tool = BrowserPipeTool::new(transport.clone(), mac_policy, handshake.session_key)
         .with_response_timeout(Duration::from_secs(30));
 
     eprintln!("sgclaw ready: agent_id={}", handshake.agent_id);
@@ -27,7 +29,7 @@ pub fn run() -> Result<(), PipeError> {
     loop {
         match transport.recv_timeout(Duration::from_secs(3600)) {
             Ok(message) => {
-                eprintln!("ignoring unsolicited browser message: {:?}", message);
+                handle_browser_message(transport.as_ref(), &browser_tool, message)?;
             }
             Err(PipeError::Timeout) => continue,
             Err(PipeError::PipeClosed) => return Ok(()),