refactor: 移除文件状态并修复工具上下文关联

src/db/mod.rs

@@ -31,8 +31,8 @@
 
 pub mod models;
 
-use sqlx::postgres::PgPoolOptions;
 use sqlx::PgPool;
+use sqlx::postgres::PgPoolOptions;
 use std::time::Duration;
 
 /// ## 数据库管理器

src/db/models.rs

@@ -14,7 +14,13 @@ use chrono::{DateTime, Utc};
 use serde::{Deserialize, Serialize};
 use sqlx::PgPool;
 
-use crate::state::AuthState;
+/// 认证状态
+#[derive(Debug, Clone, Serialize, Deserialize)]
+pub struct AuthState {
+    pub token: String,
+    pub account_id: String,
+    pub base_url: String,
+}
 
 // ─── 认证状态 ───
 
@@ -50,6 +56,38 @@ pub async fn save_auth(pool: &PgPool, auth: &AuthState) -> Result<(), String> {
     Ok(())
 }
 
+// ─── 运行时状态 (get_updates_buf) ───
+
+/// 从数据库加载运行时状态 (get_updates_buf)
+pub async fn load_runtime(pool: &PgPool) -> Option<String> {
+    let row = sqlx::query_as::<_, (serde_json::Value,)>(&
+        "SELECT value FROM app_state WHERE key = 'runtime'",
+    )
+    .fetch_optional(pool)
+    .await
+    .ok()??;
+
+    row.0.as_str().map(|s| s.to_string())
+}
+
+/// 保存运行时状态 (get_updates_buf) 到数据库
+pub async fn save_runtime(pool: &PgPool, buf: &str) -> Result<(), String> {
+    let value = serde_json::Value::String(buf.to_string());
+    sqlx::query(
+        r#"
+        INSERT INTO app_state (key, value, updated_at)
+        VALUES ('runtime', $1, NOW())
+        ON CONFLICT (key) DO UPDATE
+        SET value = EXCLUDED.value, updated_at = NOW()
+        "#,
+    )
+    .bind(&value)
+    .execute(pool)
+    .await
+    .map_err(|e| format!("保存 runtime 到数据库失败: {}", e))?;
+    Ok(())
+}
+
 // ─── 聊天记录 ───
 
 #[derive(Debug, Clone, Serialize, Deserialize, sqlx::FromRow)]