fix(desktop): DeerFlow UI — ChatArea refactor + ai-elements + dead CSS cleanup

ChatArea retry button uses setInput instead of direct sendToGateway,
fix bootstrap spinner stuck for non-logged-in users,
remove dead CSS (aurora-title/sidebar-open/quick-action-chips),
add ai components (ReasoningBlock/StreamingText/ChatMode/ModelSelector/TaskProgress),
add ClassroomPlayer + ResizableChatLayout + artifact panel

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

crates/zclaw-saas/src/telemetry/service.rs

@@ -2,7 +2,7 @@
 
 use sqlx::PgPool;
 use crate::error::SaasResult;
-use crate::models::{TelemetryModelStatsRow, TelemetryDailyStatsRow};
+use crate::models::{TelemetryModelStatsRow, TelemetryDailyStatsRow, TelemetryReportRow};
 use super::types::*;
 
 const CHUNK_SIZE: usize = 100;
@@ -270,3 +270,27 @@ pub async fn get_daily_stats(
 
     Ok(stats)
 }
+
+/// 查询账号最近的遥测报告
+pub async fn get_recent_reports(
+    db: &PgPool,
+    account_id: &str,
+    limit: i64,
+) -> SaasResult<Vec<TelemetryReportRow>> {
+    let limit = limit.min(100).max(1);
+    let rows = sqlx::query_as::<_, TelemetryReportRow>(
+        "SELECT id, account_id, device_id, app_version, model_id, \
+                input_tokens, output_tokens, latency_ms, success, \
+                error_type, connection_mode, \
+                reported_at::text, created_at::text \
+         FROM telemetry_reports \
+         WHERE account_id = $1 \
+         ORDER BY reported_at DESC \
+         LIMIT $2"
+    )
+    .bind(account_id)
+    .bind(limit)
+    .fetch_all(db)
+    .await?;
+    Ok(rows)
+}