修复微信订阅消息时间字段格式

生成结果订阅消息 time4 改为北京时间 YYYY-MM-DD HH:mm

补充成功和失败生成结果模板时间格式测试

记录 dev 订阅消息 time4 被微信拒收的排障口径

server-rs/crates/api-server/src/wechat_subscribe_message.rs

@@ -2,7 +2,7 @@ use std::collections::BTreeMap;
 
 use axum::http::StatusCode;
 use platform_wechat::WechatSubscribeMessageRequest;
-use shared_kernel::format_timestamp_micros;
+use time::{OffsetDateTime, UtcOffset};
 use tracing::{info, warn};
 
 use crate::{http_error::AppError, platform_errors::map_wechat_error, state::AppState};
@@ -160,12 +160,20 @@ fn truncate_template_value(value: &str, max_chars: usize) -> String {
 }
 
 fn format_generation_completed_time(completed_at_micros: i64) -> String {
-    format_timestamp_micros(completed_at_micros)
-        .replace('T', " ")
-        .split('.')
-        .next()
-        .unwrap_or_default()
-        .to_string()
+    let seconds = completed_at_micros.div_euclid(1_000_000);
+    let Ok(utc_time) = OffsetDateTime::from_unix_timestamp(seconds) else {
+        return "1970-01-01 08:00".to_string();
+    };
+    let beijing_offset = UtcOffset::from_hms(8, 0, 0).unwrap_or(UtcOffset::UTC);
+    let local_time = utc_time.to_offset(beijing_offset);
+    format!(
+        "{:04}-{:02}-{:02} {:02}:{:02}",
+        local_time.year(),
+        u8::from(local_time.month()),
+        local_time.day(),
+        local_time.hour(),
+        local_time.minute()
+    )
 }
 
 fn normalize_miniprogram_state(value: &str) -> &'static str {
@@ -194,4 +202,21 @@ mod tests {
         assert_eq!(data.get("phrase2").map(String::as_str), Some("生成失败"));
         assert_eq!(data.get("number6").map(String::as_str), Some("0"));
     }
+
+    #[test]
+    fn generation_result_template_time_uses_wechat_time_format() {
+        let data = build_generation_result_template_data(&GenerationResultSubscribeMessage {
+            owner_user_id: "user-1".to_string(),
+            work_name: Some("首关拼图".to_string()),
+            status: GenerationResultSubscribeMessageStatus::Succeeded,
+            consumed_points: 15,
+            completed_at_micros: 0,
+            page: None,
+        });
+
+        assert_eq!(
+            data.get("time4").map(String::as_str),
+            Some("1970-01-01 08:00")
+        );
+    }
 }