feat: 对话功能包——导出（MD/图片/HTML）、AI 命名、列表管理、辅助模型、星标

packages/app/src-tauri/src/core/database.rs

@@ -43,13 +43,32 @@ pub async fn initialize(app_handle: &AppHandle) -> Result<SqlitePool, Box<dyn st
         .await?;
     println!("Database schema initialized.");
 
+    run_migrations(&pool).await?;
+
     if is_new_db {
         initialize_default_skills(&pool).await?;
     }
 
     Ok(pool)
 }
 
+/// fork 专属迁移通道：上游同步 schema.sql 时的增量变更都放这里，避免改 schema.sql 冲突。
+/// 所有迁移必须幂等。
+async fn run_migrations(pool: &SqlitePool) -> Result<(), Box<dyn std::error::Error>> {
+    // threads.starred（对话星标）：已存在时忽略 duplicate column 错误
+    let result = sqlx::query("ALTER TABLE threads ADD COLUMN starred INTEGER NOT NULL DEFAULT 0")
+        .execute(pool)
+        .await;
+
+    match result {
+        Ok(_) => println!("Migration applied: threads.starred added."),
+        Err(e) if e.to_string().contains("duplicate column name") => {}
+        Err(e) => return Err(e.into()),
+    }
+
+    Ok(())
+}
+
 async fn initialize_default_skills(pool: &SqlitePool) -> Result<(), Box<dyn std::error::Error>> {
     let default_skills_json = include_str!("./default-skills.json");
     let default_skills: Vec<DefaultSkill> = serde_json::from_str(default_skills_json)?;

packages/app/src-tauri/src/core/schema.sql

@@ -1,3 +1,4 @@
+-- 注意：threads.starred 列由 database.rs 的 fork 专属迁移添加，勿在此定义（避免与 ALTER 重复）
 CREATE TABLE IF NOT EXISTS threads (
     id TEXT PRIMARY KEY NOT NULL,
     book_id TEXT,

packages/app/src-tauri/src/core/threads/commands.rs

@@ -39,6 +39,7 @@ pub async fn create_thread(
         metadata: payload.metadata,
         title: payload.title,
         messages: payload.messages_json,
+        starred: false,
         created_at: current_timestamp,
         updated_at: current_timestamp,
     };
@@ -56,7 +57,7 @@ pub async fn edit_thread(
     let pool = db_pool_guard.as_ref().ok_or("Database not initialized")?;
 
     let row = sqlx::query(
-        "SELECT id, book_id, metadata, title, messages, created_at, updated_at FROM threads WHERE id = ?"
+        "SELECT id, book_id, metadata, title, messages, starred, created_at, updated_at FROM threads WHERE id = ?"
     )
     .bind(&payload.id)
     .fetch_one(pool)
@@ -72,20 +73,23 @@ pub async fn edit_thread(
         metadata: row.get("metadata"),
         title: row.get("title"),
         messages: row.get("messages"),
+        starred: row.get::<i32, _>("starred") != 0,
         created_at: row.get("created_at"),
         updated_at: row.get("updated_at"),
     };
 
     let new_title = payload.title.unwrap_or(existing_thread.title);
     let new_metadata = payload.metadata.unwrap_or(existing_thread.metadata);
     let new_messages = payload.messages_json.unwrap_or(existing_thread.messages);
+    let new_starred = payload.starred.unwrap_or(existing_thread.starred);
 
     sqlx::query(
-        "UPDATE threads SET title = ?, metadata = ?, messages = ?, updated_at = ? WHERE id = ?",
+        "UPDATE threads SET title = ?, metadata = ?, messages = ?, starred = ?, updated_at = ? WHERE id = ?",
     )
     .bind(&new_title)
     .bind(&new_metadata)
     .bind(&new_messages)
+    .bind(if new_starred { 1 } else { 0 })
     .bind(current_timestamp)
     .bind(&payload.id)
     .execute(pool)
@@ -101,6 +105,7 @@ pub async fn edit_thread(
         metadata: new_metadata,
         title: new_title,
         messages: new_messages,
+        starred: new_starred,
         created_at: existing_thread.created_at,
         updated_at: current_timestamp,
     };
@@ -117,7 +122,7 @@ pub async fn get_latest_thread_by_book_id(
     let pool = db_pool_guard.as_ref().ok_or("Database not initialized")?;
 
     let row_result = sqlx::query(
-        "SELECT id, book_id, metadata, title, messages, created_at, updated_at FROM threads WHERE book_id IS ? ORDER BY updated_at DESC LIMIT 1"
+        "SELECT id, book_id, metadata, title, messages, starred, created_at, updated_at FROM threads WHERE book_id IS ? ORDER BY updated_at DESC LIMIT 1"
     )
     .bind(&book_id)
     .fetch_optional(pool)
@@ -134,6 +139,7 @@ pub async fn get_latest_thread_by_book_id(
             metadata: row.get("metadata"),
             title: row.get("title"),
             messages: row.get("messages"),
+            starred: row.get::<i32, _>("starred") != 0,
             created_at: row.get("created_at"),
             updated_at: row.get("updated_at"),
         };
@@ -152,7 +158,7 @@ pub async fn get_threads_by_book_id(
     let pool = db_pool_guard.as_ref().ok_or("Database not initialized")?;
 
     let rows = sqlx::query(
-        "SELECT id, book_id, metadata, title, messages, created_at, updated_at FROM threads WHERE book_id IS ? ORDER BY updated_at DESC"
+        "SELECT id, book_id, metadata, title, messages, starred, created_at, updated_at FROM threads WHERE book_id IS ? ORDER BY updated_at DESC"
     )
     .bind(&book_id)
     .fetch_all(pool)
@@ -183,6 +189,7 @@ pub async fn get_threads_by_book_id(
                 metadata: row.get("metadata"),
                 title: row.get("title"),
                 message_count,
+                starred: row.get::<i32, _>("starred") != 0,
                 created_at: row.get("created_at"),
                 updated_at: row.get("updated_at"),
             }
@@ -198,7 +205,7 @@ pub async fn get_all_threads(state: State<'_, AppState>) -> Result<Vec<ThreadSum
     let pool = db_pool_guard.as_ref().ok_or("Database not initialized")?;
 
     let rows = sqlx::query(
-        "SELECT id, book_id, metadata, title, messages, created_at, updated_at FROM threads ORDER BY updated_at DESC"
+        "SELECT id, book_id, metadata, title, messages, starred, created_at, updated_at FROM threads ORDER BY updated_at DESC"
     )
     .fetch_all(pool)
     .await
@@ -228,6 +235,7 @@ pub async fn get_all_threads(state: State<'_, AppState>) -> Result<Vec<ThreadSum
                 metadata: row.get("metadata"),
                 title: row.get("title"),
                 message_count,
+                starred: row.get::<i32, _>("starred") != 0,
                 created_at: row.get("created_at"),
                 updated_at: row.get("updated_at"),
             }
@@ -246,7 +254,7 @@ pub async fn get_thread_by_id(
     let pool = db_pool_guard.as_ref().ok_or("Database not initialized")?;
 
     let row = sqlx::query(
-        "SELECT id, book_id, metadata, title, messages, created_at, updated_at FROM threads WHERE id = ?"
+        "SELECT id, book_id, metadata, title, messages, starred, created_at, updated_at FROM threads WHERE id = ?"
     )
     .bind(&thread_id)
     .fetch_one(pool)
@@ -262,6 +270,7 @@ pub async fn get_thread_by_id(
         metadata: row.get("metadata"),
         title: row.get("title"),
         messages: row.get("messages"),
+        starred: row.get::<i32, _>("starred") != 0,
         created_at: row.get("created_at"),
         updated_at: row.get("updated_at"),
     };

packages/app/src-tauri/src/core/threads/models.rs

@@ -7,6 +7,7 @@ pub struct Thread {
     pub metadata: String,
     pub title: String,
     pub messages: String,
+    pub starred: bool,
     pub created_at: i64,
     pub updated_at: i64,
 }
@@ -18,6 +19,7 @@ pub struct ThreadSummary {
     pub metadata: String,
     pub title: String,
     pub message_count: i32,
+    pub starred: bool,
     pub created_at: i64,
     pub updated_at: i64,
 }
@@ -36,4 +38,5 @@ pub struct EditThreadPayload {
     pub title: Option<String>,
     pub metadata: Option<String>,
     pub messages_json: Option<String>,
+    pub starred: Option<bool>,
 }

packages/app/src/ai/providers/factory.ts

@@ -1,4 +1,4 @@
-import { useProviderStore } from "@/store/provider-store";
+import { type SelectedModel, useProviderStore } from "@/store/provider-store";
 import { createDeepSeek } from "@ai-sdk/deepseek";
 import { createGoogleGenerativeAI } from "@ai-sdk/google";
 import { createOpenAI } from "@ai-sdk/openai";
@@ -103,6 +103,16 @@ export function createModelInstance(providerId: string, modelId: string) {
   return providerInstance(modelId);
 }
 
+/**
+ * 获取用于轻量任务（生成对话标题、语义上下文、AI 标签等）的辅助模型
+ * 未配置辅助模型时回落到当前聊天选中模型
+ * _task 为将来按任务类型分配模型预留，当前忽略
+ */
+export function getUtilityModel(_task?: string): SelectedModel | null {
+  const { utilityModel, selectedModel } = useProviderStore.getState();
+  return utilityModel ?? selectedModel;
+}
+
 /**
  * Hook: 获取可用的模型列表
  */

packages/app/src/components/settings/providers.tsx

@@ -1,3 +1,4 @@
+import ModelSelector from "@/components/side-chat/model-selector";
 import { Button } from "@/components/ui/button";
 import { Switch } from "@/components/ui/switch";
 import { cn } from "@/lib/utils";
@@ -10,7 +11,7 @@ interface ProvidersSettingsProps {
 }
 
 export default function ProvidersSettings({ onProviderSelect }: ProvidersSettingsProps) {
-  const { modelProviders, setModelProviders, addProvider } = useProviderStore();
+  const { modelProviders, utilityModel, setModelProviders, setUtilityModel, addProvider } = useProviderStore();
 
   const toggleProviderEnabled = (providerId: string) => {
     const updatedProviders = modelProviders.map((provider) =>
@@ -25,7 +26,29 @@ export default function ProvidersSettings({ onProviderSelect }: ProvidersSetting
   };
 
   return (
-    <div className="p-4 pt-3">
+    <div className="space-y-4 p-4 pt-3">
+      <div className="rounded-lg bg-muted/80 p-4">
+        <h2 className="text mb-4 dark:text-neutral-200">辅助模型</h2>
+        <div className="flex items-start justify-between gap-4">
+          <p className="mt-1 text-neutral-600 text-xs dark:text-neutral-400">
+            用于生成对话标题、语义上下文、AI 标签等轻量任务，推荐选择便宜快速的模型；留空则跟随当前聊天模型
+          </p>
+          <div className="flex flex-shrink-0 items-center gap-2">
+            <ModelSelector
+              selectedModel={utilityModel}
+              onModelSelect={(model) => setUtilityModel(model)}
+              placeholder="跟随聊天模型"
+              className="w-48"
+            />
+            {utilityModel && (
+              <Button variant="ghost" size="sm" onClick={() => setUtilityModel(null)}>
+                清除
+              </Button>
+            )}
+          </div>
+        </div>
+      </div>
+
       <div className="rounded-lg bg-muted/80 p-4">
         <div className="flex items-center justify-between border-b pb-4">
           <h2 className="text dark:text-neutral-200">模型提供商</h2>