feat: add React UI and AI page sharing tools

Move HTTP page rendering to the React app, fix multi-tool-call message handling, add API docs lookup, web page lookup, and Markdown preview page sharing.

ias-context/src/manager.rs

@@ -6,6 +6,7 @@ use ias_common::model::ai::{
 };
 use ias_common::queue::ChannelMessage;
 use sqlx::PgPool;
+use std::collections::HashSet;
 
 use crate::model::{ContextMessageRow, ContextScope, ContextSession, LongTermMemory};
 use crate::repository::ContextRepository;
@@ -112,6 +113,7 @@ impl ContextManager {
         let session = self.active_or_new_session(&scope).await?;
         let tool_calls = tool_calls
             .as_ref()
+            .filter(|calls| !calls.is_empty())
             .map(serde_json::to_string)
             .transpose()
             .context("序列化 assistant tool_calls 失败")?;
@@ -285,6 +287,7 @@ impl ContextManager {
             messages.push(row_to_chat_message(row)?);
         }
 
+        let messages = sanitize_tool_call_messages(messages);
         Ok(ContextSnapshot { messages })
     }
 
@@ -448,7 +451,8 @@ fn row_to_chat_message(row: ContextMessageRow) -> anyhow::Result<ChatCompletionR
         .as_deref()
         .map(serde_json::from_str::<Vec<ChatCompletionToolCall>>)
         .transpose()
-        .context("解析历史 tool_calls 失败")?;
+        .context("解析历史 tool_calls 失败")?
+        .filter(|calls| !calls.is_empty());
 
     Ok(ChatCompletionRequestMessage {
         role: row.role,
@@ -458,6 +462,74 @@ fn row_to_chat_message(row: ContextMessageRow) -> anyhow::Result<ChatCompletionR
     })
 }
 
+fn sanitize_tool_call_messages(
+    messages: Vec<ChatCompletionRequestMessage>,
+) -> Vec<ChatCompletionRequestMessage> {
+    let mut sanitized = Vec::with_capacity(messages.len());
+    let mut index = 0;
+
+    while index < messages.len() {
+        let message = &messages[index];
+        let tool_calls = message
+            .tool_calls
+            .as_ref()
+            .filter(|calls| !calls.is_empty());
+
+        if message.role == "assistant"
+            && let Some(tool_calls) = tool_calls
+        {
+            let expected_ids = tool_calls
+                .iter()
+                .map(|call| call.id.as_str())
+                .collect::<HashSet<_>>();
+            let mut seen_ids = HashSet::new();
+            let mut tool_messages = Vec::new();
+            let mut next = index + 1;
+
+            while next < messages.len() && messages[next].role == "tool" {
+                if let Some(tool_call_id) = messages[next].tool_call_id.as_deref()
+                    && expected_ids.contains(tool_call_id)
+                    && seen_ids.insert(tool_call_id)
+                {
+                    tool_messages.push(messages[next].clone());
+                }
+                next += 1;
+            }
+
+            if seen_ids.len() == expected_ids.len() {
+                sanitized.push(message.clone());
+                sanitized.extend(tool_messages);
+            } else {
+                let content = message.content.trim();
+                if !content.is_empty() {
+                    let mut assistant = message.clone();
+                    assistant.tool_calls = None;
+                    sanitized.push(assistant);
+                }
+                eprintln!(
+                    "跳过不完整 assistant tool_calls 历史片段: expected={}, actual={}",
+                    expected_ids.len(),
+                    seen_ids.len()
+                );
+            }
+
+            index = next;
+            continue;
+        }
+
+        if message.role == "tool" {
+            eprintln!("跳过没有对应 assistant tool_calls 的历史 tool 消息");
+            index += 1;
+            continue;
+        }
+
+        sanitized.push(message.clone());
+        index += 1;
+    }
+
+    sanitized
+}
+
 fn build_session_summary(
     session: &ContextSession,
     messages: &[ContextMessageRow],
@@ -731,7 +803,16 @@ fn read_i64_env(name: &str, default: i64) -> i64 {
 
 #[cfg(test)]
 mod tests {
-    use super::detect_assistant_name_preference;
+    use super::{detect_assistant_name_preference, sanitize_tool_call_messages};
+    use ias_common::model::ai::{ChatCompletionRequestMessage, ChatCompletionToolCall};
+
+    fn tool_call(id: &str) -> ChatCompletionToolCall {
+        ChatCompletionToolCall {
+            function: None,
+            id: id.to_string(),
+            call_type: "function".to_string(),
+        }
+    }
 
     #[test]
     fn detects_assistant_name_preference() {
@@ -754,4 +835,53 @@ mod tests {
         assert_eq!(detect_assistant_name_preference("不要叫知微"), None);
         assert_eq!(detect_assistant_name_preference("你是谁？"), None);
     }
+
+    #[test]
+    fn keeps_complete_multi_tool_call_sequence() {
+        let messages = sanitize_tool_call_messages(vec![
+            ChatCompletionRequestMessage::new("user".to_string(), "查一下".to_string()),
+            ChatCompletionRequestMessage::assistant(
+                "assistant".to_string(),
+                String::new(),
+                Some(vec![tool_call("call_1"), tool_call("call_2")]),
+            ),
+            ChatCompletionRequestMessage::tool(
+                "tool".to_string(),
+                "结果 1".to_string(),
+                "call_1".to_string(),
+            ),
+            ChatCompletionRequestMessage::tool(
+                "tool".to_string(),
+                "结果 2".to_string(),
+                "call_2".to_string(),
+            ),
+        ]);
+
+        assert_eq!(messages.len(), 4);
+        assert_eq!(messages[1].tool_calls.as_ref().unwrap().len(), 2);
+        assert_eq!(messages[2].tool_call_id.as_deref(), Some("call_1"));
+        assert_eq!(messages[3].tool_call_id.as_deref(), Some("call_2"));
+    }
+
+    #[test]
+    fn drops_incomplete_tool_call_sequence() {
+        let messages = sanitize_tool_call_messages(vec![
+            ChatCompletionRequestMessage::new("user".to_string(), "查一下".to_string()),
+            ChatCompletionRequestMessage::assistant(
+                "assistant".to_string(),
+                String::new(),
+                Some(vec![tool_call("call_1"), tool_call("call_2")]),
+            ),
+            ChatCompletionRequestMessage::tool(
+                "tool".to_string(),
+                "结果 1".to_string(),
+                "call_1".to_string(),
+            ),
+            ChatCompletionRequestMessage::new("user".to_string(), "继续".to_string()),
+        ]);
+
+        assert_eq!(messages.len(), 2);
+        assert_eq!(messages[0].role, "user");
+        assert_eq!(messages[1].content, "继续");
+    }
 }