feat: 添加参数提取工具函数，支持处理字符串化 JSON 数组，优化技能管理和会话发送功能

src/agent/agent_loop.rs

@@ -763,6 +763,8 @@ impl AgentLoop {
                 iteration,
                 response_len = response.content.len(),
                 tool_calls_len = response.tool_calls.len(),
+                content = %response.content,
+                model = %response.model,
                 "LLM response received"
             );
 
@@ -782,9 +784,17 @@ impl AgentLoop {
             }
 
             // Execute tool calls
+            let tool_calls_json = serde_json::to_string_pretty(&response.tool_calls)
+                .unwrap_or_else(|_| response.tool_calls.iter()
+                    .map(|tc| format!("{}({})", tc.name, tc.arguments))
+                    .collect::<Vec<_>>()
+                    .join(", "));
             tracing::info!(
                 iteration,
                 count = response.tool_calls.len(),
+                content = %response.content,
+                tool_calls = %tool_calls_json,
+                model = %response.model,
                 "Tool calls detected, executing tools"
             );
 

src/tools/mod.rs

@@ -143,6 +143,44 @@ pub fn require_bool(args: &serde_json::Value, key: &str) -> Result<bool, String>
         .ok_or_else(|| format!("Missing required parameter: {}", key))
 }
 
+/// Extract a string array parameter, handling both actual arrays and stringified JSON arrays.
+pub fn extract_string_array(args: &serde_json::Value, key: &str) -> Option<Vec<String>> {
+    args.get(key).and_then(|v| {
+        if let Some(arr) = v.as_array() {
+            Some(
+                arr.iter()
+                    .filter_map(|item| item.as_str())
+                    .map(str::trim)
+                    .filter(|s| !s.is_empty())
+                    .map(ToOwned::to_owned)
+                    .collect(),
+            )
+        } else if let Some(s) = v.as_str() {
+            // Try to parse as JSON array string
+            serde_json::from_str::<Vec<serde_json::Value>>(s)
+                .ok()
+                .map(|arr| {
+                    arr.iter()
+                        .filter_map(|item| item.as_str())
+                        .map(str::trim)
+                        .filter(|s| !s.is_empty())
+                        .map(ToOwned::to_owned)
+                        .collect()
+                })
+                .filter(|result: &Vec<String>| !result.is_empty())
+        } else {
+            None
+        }
+    })
+}
+
+/// Extract a required string array parameter.
+pub fn require_string_array(args: &serde_json::Value, key: &str) -> Result<Vec<String>, String> {
+    extract_string_array(args, key)
+        .filter(|arr| !arr.is_empty())
+        .ok_or_else(|| format!("Missing required parameter: {}", key))
+}
+
 /// Check if args is null and return an error result if so.
 /// Returns the provided error message if args is null.
 pub fn check_null_args(args: &serde_json::Value, tool_name: &str) -> Option<ToolResult> {

src/tools/session_send.rs

@@ -164,21 +164,39 @@ fn validate_context(context: &ToolContext) -> anyhow::Result<()> {
 }
 
 fn parse_attachments(value: &serde_json::Value) -> anyhow::Result<Vec<MediaItem>> {
-    let attachment_paths = value
-        .as_array()
-        .ok_or_else(|| anyhow!("attachments must be an array of local file paths"))?;
+    // 支持两种格式：实际数组 或 字符串化的 JSON 数组
+    let paths = if let Some(arr) = value.as_array() {
+        arr
+            .iter()
+            .filter_map(|v| v.as_str())
+            .map(str::trim)
+            .filter(|v| !v.is_empty())
+            .map(ToOwned::to_owned)
+            .collect::<Vec<_>>()
+    } else if let Some(s) = value.as_str() {
+        // 尝试解析字符串化的 JSON 数组
+        serde_json::from_str::<Vec<serde_json::Value>>(s)
+            .ok()
+            .map(|arr| {
+                arr.iter()
+                    .filter_map(|v| v.as_str())
+                    .map(str::trim)
+                    .filter(|v| !v.is_empty())
+                    .map(ToOwned::to_owned)
+                    .collect::<Vec<_>>()
+            })
+            .unwrap_or_default()
+    } else {
+        vec![]
+    };
 
-    let mut attachments = Vec::with_capacity(attachment_paths.len());
-    for path_value in attachment_paths {
-        let raw_path = path_value
-            .as_str()
-            .ok_or_else(|| anyhow!("attachments entries must be strings"))?
-            .trim();
-        if raw_path.is_empty() {
-            return Err(anyhow!("attachment paths must not be empty"));
+    if paths.is_empty() {
+        return Err(anyhow!("attachments must be an array of local file paths"));
     }
 
-        let metadata = std::fs::metadata(raw_path)
+    let mut attachments = Vec::with_capacity(paths.len());
+    for raw_path in paths {
+        let metadata = std::fs::metadata(&raw_path)
             .map_err(|err| anyhow!("failed to access attachment '{}': {}", raw_path, err))?;
         if !metadata.is_file() {
             return Err(anyhow!("attachment path is not a file: {}", raw_path));
@@ -187,9 +205,9 @@ fn parse_attachments(value: &serde_json::Value) -> anyhow::Result<Vec<MediaItem>
             return Err(anyhow!("attachment file is empty: {}", raw_path));
         }
 
-        let media_type = infer_media_type(raw_path);
+        let media_type = infer_media_type(&raw_path);
         let mut item = MediaItem::new(raw_path.to_string(), media_type);
-        item.mime_type = mime_guess::from_path(raw_path)
+        item.mime_type = mime_guess::from_path(&raw_path)
             .first_raw()
             .map(ToOwned::to_owned);
         attachments.push(item);
@@ -319,4 +337,20 @@ mod tests {
         assert_eq!(attachments.len(), 1);
         assert_eq!(attachments[0].media_type, "image");
     }
+
+    #[test]
+    fn parse_attachments_handles_stringified_json_array() {
+        let file = NamedTempFile::new().unwrap();
+        std::fs::write(file.path(), b"demo").unwrap();
+        let txt_path = file.path().with_extension("txt");
+        std::fs::rename(file.path(), &txt_path).unwrap();
+
+        // Test with stringified JSON array (like LLM might send)
+        let path_str = txt_path.to_string_lossy().to_string().replace("\\", "\\\\");
+        let json_string = format!("[\"{}\"]", path_str);
+        let attachments = parse_attachments(&json!(json_string)).unwrap();
+
+        assert_eq!(attachments.len(), 1);
+        assert_eq!(attachments[0].media_type, "file");
+    }
 }

src/tools/skill_manage.rs

@@ -4,6 +4,7 @@ use std::sync::Arc;
 
 use crate::skills::{SkillRuntime, SkillScope};
 use crate::tools::traits::{Tool, ToolResult};
+use crate::tools::{extract_bool, extract_string_array};
 
 pub struct SkillManageTool {
     skills: Arc<SkillRuntime>,
@@ -86,7 +87,7 @@ impl Tool for SkillManageTool {
             }
         };
 
-        let reload = args.get("reload").and_then(|v| v.as_bool()).unwrap_or(true);
+        let reload = extract_bool(&args, "reload").unwrap_or(true);
         let scope = match args.get("scope").and_then(|v| v.as_str()) {
             Some(value) => match SkillScope::parse(value) {
                 Some(scope) => scope,
@@ -280,28 +281,10 @@ fn error_result(message: &str) -> ToolResult {
 }
 
 fn parse_disable_names(args: &serde_json::Value) -> Result<Vec<String>, String> {
-    let names = args
-        .get("names")
-        .ok_or_else(|| "disable requires names".to_string())?
-        .as_array()
-        .ok_or_else(|| "names must be an array of strings".to_string())?;
-
-    let mut parsed = Vec::new();
-    for item in names {
-        let name = item
-            .as_str()
-            .ok_or_else(|| "names must be an array of strings".to_string())?
-            .trim()
-            .to_string();
-        if name.is_empty() {
-            return Err("names must not contain empty values".to_string());
-        }
-        parsed.push(name);
-    }
-    if parsed.is_empty() {
-        return Err("names must not be empty".to_string());
-    }
-    Ok(parsed)
+    // 支持两种格式：实际数组 或 字符串化的 JSON 数组
+    extract_string_array(args, "names")
+        .filter(|arr| !arr.is_empty())
+        .ok_or_else(|| "disable requires names (array of strings)".to_string())
 }
 
 fn skill_change_payload(change: crate::skills::SkillAvailabilityChange) -> serde_json::Value {