调整公共模块结构，方便后续延伸

common/Cargo.toml

@@ -6,4 +6,6 @@ edition = "2024"
 [dependencies]
 # ── 序列化 ──
 serde = { version = "1.0", features = ["derive"] } # 序列化/反序列化
-serde_json = "1.0"
+serde_json = "1.0"
+# ── 错误处理 ──
+thiserror = "2"

common/src/ai.rs

@@ -1,120 +0,0 @@
-use serde::{Deserialize, Serialize};
-
-#[derive(Debug, Serialize)]
-pub struct ChatCompletionRequestBody {
-    pub model: String,
-    pub messages: Vec<ChatCompletionRequestMessage>,
-    pub stream: bool,
-    pub tools: Vec<serde_json::Value>,
-    pub extra_body: Option<ChatCompletionRequestExtra>,
-}
-#[derive(Debug, Serialize)]
-pub struct ChatCompletionRequestExtra {
-    pub thinking: ChatCompletionRequestThinking,
-}
-#[derive(Debug, Serialize)]
-pub struct ChatCompletionRequestThinking {
-    #[serde(rename = "type")]
-    pub thinking_type: String,
-}
-
-#[derive(Debug, Clone, Serialize)]
-pub struct ChatCompletionRequestMessage {
-    pub role: String,
-    pub content: String,
-    pub tool_call_id: Option<String>,
-    pub tool_calls: Option<Vec<ChatCompletionToolCall>>,
-}
-impl ChatCompletionRequestMessage {
-    pub fn new(role: String, content: String) -> Self {
-        Self {
-            role,
-            content,
-            tool_call_id: None,
-            tool_calls: None,
-        }
-    }
-    pub fn assistant(
-        role: String,
-        content: String,
-        tool_calls: Option<Vec<ChatCompletionToolCall>>,
-    ) -> Self {
-        Self {
-            role,
-            content,
-            tool_call_id: None,
-            tool_calls: tool_calls,
-        }
-    }
-
-    pub fn tool(role: String, content: String, tool_call_id: String) -> Self {
-        Self {
-            role,
-            content,
-            tool_call_id: Some(tool_call_id),
-            tool_calls: None,
-        }
-    }
-}
-
-// {"choices":[{"finish_reason":"stop","index":0,"logprobs":null,"message":{"content":"你好！😊 有什么我可以帮你的吗？","role":"assistant"}}],"created":1782208455,"id":"02178220845277286f296e4c58ddf650991f54d763d292af8529b","model":"deepseek-v4-flash-260425","service_tier":"default","object":"chat.completion","usage":{"prompt_tokens":2005,"completion_tokens":125,"total_tokens":2130,"prompt_tokens_details":{"cached_tokens":0},"completion_tokens_details":{"reasoning_tokens":114}}}
-#[allow(dead_code)]
-#[derive(Debug, Deserialize)]
-pub struct ChatCompletionResponseBody {
-    id: String,
-    object: String,
-    created: i64,
-    model: String,
-    service_tier: String,
-    pub choices: Vec<ChatCompletionResponseChoice>,
-    pub usage: ChatCompletionUsage,
-}
-
-#[allow(dead_code)]
-#[derive(Debug, Deserialize)]
-pub struct ChatCompletionResponseChoice {
-    index: u32,
-    pub message: ChatCompletionResponseMessage,
-    logprobs: Option<serde_json::Value>,
-    finish_reason: String,
-}
-#[allow(dead_code)]
-#[derive(Debug, Deserialize)]
-pub struct ChatCompletionResponseMessage {
-    pub role: String,
-    pub content: String,
-    pub reasoning_content: Option<String>,
-    pub tool_calls: Option<Vec<ChatCompletionToolCall>>,
-}
-#[derive(Debug, Clone, Deserialize, Serialize)]
-pub struct ChatCompletionToolCall {
-    pub function: Option<ChatCompletionFunction>,
-    pub id: String,
-    #[serde(rename = "type")]
-    pub call_type: String,
-}
-#[derive(Debug, Clone, Deserialize, Serialize)]
-pub struct ChatCompletionFunction {
-    pub arguments: String,
-    pub name: String,
-}
-
-#[derive(Debug, Deserialize)]
-pub struct ChatCompletionUsage {
-    pub prompt_tokens: u32,
-    pub completion_tokens: u32,
-    pub total_tokens: u32,
-    pub prompt_tokens_details: ChatCompletionUsagePrompt,
-    pub completion_tokens_details: ChatCompletionUsageCompletion,
-}
-
-#[allow(dead_code)]
-#[derive(Debug, Deserialize)]
-pub struct ChatCompletionUsagePrompt {
-    pub cached_tokens: u32,
-}
-#[allow(dead_code)]
-#[derive(Debug, Deserialize)]
-pub struct ChatCompletionUsageCompletion {
-    pub reasoning_tokens: u32,
-}

common/src/lib.rs

@@ -1,2 +1,3 @@
-pub mod ai;
+pub mod error;
+pub mod model;
 pub mod queue;

common/src/queue.rs

@@ -1,6 +1,6 @@
 use serde::{Deserialize, Serialize};
 
-use crate::ai::ChatCompletionToolCall;
+use crate::model::ai::ChatCompletionToolCall;
 
 #[derive(Debug, Clone, Serialize, Deserialize)]
 pub enum QueueMessage {