新增: AI Chat多项增强(审批去重/编辑重发/导出/实体引用/会话置顶搜索)+任务推进链df-nodes落地

crates/df-storage/src/crud.rs

@@ -1047,6 +1047,7 @@ fn ai_conversation_from_row(row: &Row<'_>) -> std::result::Result<AiConversation
         model: row.get("model")?,
         models: row.get("models")?,
         archived: row.get::<_, i32>("archived")? != 0,
+        pinned: row.get::<_, i32>("pinned")? != 0,
         prompt_tokens: row.get("prompt_tokens")?,
         completion_tokens: row.get("completion_tokens")?,
         created_at: row.get("created_at")?,
@@ -1137,10 +1138,11 @@ impl_repo!(
     from_row => |row| ai_conversation_from_row(row),
     insert  => |conn, rec| {
         conn.execute(
-            "INSERT INTO ai_conversations (id, title, messages, provider_id, model, models, archived, prompt_tokens, completion_tokens, created_at, updated_at)
-             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11)",
+            "INSERT INTO ai_conversations (id, title, messages, provider_id, model, models, archived, pinned, prompt_tokens, completion_tokens, created_at, updated_at)
+             VALUES (?1, ?2, ?3, ?4, ?5, ?6, ?7, ?8, ?9, ?10, ?11, ?12)",
             params![
                 rec.id, rec.title, rec.messages, rec.provider_id, rec.model, rec.models, rec.archived,
+                if rec.pinned { 1i32 } else { 0i32 },
                 rec.prompt_tokens, rec.completion_tokens,
                 rec.created_at, rec.updated_at
             ],
@@ -1148,9 +1150,10 @@ impl_repo!(
     },
     update  => |conn, rec| {
         conn.execute(
-            "UPDATE ai_conversations SET title = ?1, messages = ?2, provider_id = ?3, model = ?4, models = ?5, archived = ?6, prompt_tokens = ?7, completion_tokens = ?8, updated_at = ?9 WHERE id = ?10",
+            "UPDATE ai_conversations SET title = ?1, messages = ?2, provider_id = ?3, model = ?4, models = ?5, archived = ?6, pinned = ?7, prompt_tokens = ?8, completion_tokens = ?9, updated_at = ?10 WHERE id = ?11",
             params![
                 rec.title, rec.messages, rec.provider_id, rec.model, rec.models, rec.archived,
+                if rec.pinned { 1i32 } else { 0i32 },
                 rec.prompt_tokens, rec.completion_tokens,
                 rec.updated_at, rec.id
             ],
@@ -1237,6 +1240,42 @@ impl AiToolExecutionRepo {
         .await
         .map_err(storage_err)?
     }
+
+    /// 审批历史面板分页查询:按 requested_at 倒序(最新在前),limit 默认 50。
+    ///
+    /// 与 list_pending 同理走专用 SELECT,绕过通用 query 宏(后者硬编码
+    /// ORDER BY created_at,本表无该列)。limit/offset 上限钳制(limit ≤ 200),
+    /// 防前端恶意/失误传超大值。
+    pub async fn list_recent(
+        &self,
+        limit: u32,
+        offset: u32,
+    ) -> Result<Vec<AiToolExecutionRecord>> {
+        let conn = self.conn.clone();
+        // 钳制 limit 防滥用(默认 50,最大 200)
+        let safe_limit = limit.min(200) as i64;
+        let safe_offset = offset as i64;
+        tokio::task::spawn_blocking(move || {
+            let guard = conn.blocking_lock();
+            let mut stmt = guard
+                .prepare(
+                    "SELECT * FROM ai_tool_executions ORDER BY requested_at DESC LIMIT ?1 OFFSET ?2",
+                )
+                .map_err(storage_err)?;
+            let rows = stmt
+                .query_map(params![safe_limit, safe_offset], |row| {
+                    ai_tool_execution_from_row(row)
+                })
+                .map_err(storage_err)?;
+            let mut results = Vec::new();
+            for r in rows {
+                results.push(r.map_err(storage_err)?);
+            }
+            Ok(results)
+        })
+        .await
+        .map_err(storage_err)?
+    }
 }
 
 impl_repo!(
@@ -1611,6 +1650,26 @@ impl AiConversationRepo {
         .await
         .map_err(storage_err)?
     }
+
+    /// 设置置顶标记(仅改 pinned,不动 updated_at) — UX-17
+    ///
+    /// 同 set_archived:置顶是纯元数据标记,不应改变相对时间。前端排序读 pinned DESC, updated_at DESC。
+    pub async fn set_pinned(&self, id: &str, pinned: bool) -> Result<bool> {
+        let conn = self.conn.clone();
+        let id = id.to_owned();
+        tokio::task::spawn_blocking(move || {
+            let guard = conn.blocking_lock();
+            let affected = guard
+                .execute(
+                    "UPDATE ai_conversations SET pinned = ?1 WHERE id = ?2",
+                    params![if pinned { 1 } else { 0 }, id],
+                )
+                .map_err(storage_err)?;
+            Ok(affected > 0)
+        })
+        .await
+        .map_err(storage_err)?
+    }
 }
 
 // ============================================================