diff --git a/tui-plugins/oc-session-all.js b/tui-plugins/oc-session-all.js
index 6f4edde..c06d1a2 100644
--- a/tui-plugins/oc-session-all.js
+++ b/tui-plugins/oc-session-all.js
@@ -426,26 +426,38 @@ function mmReadCatalog() {
   return new Promise((resolve) => {
     try {
       const py = process.platform === "win32" ? "python" : "python3"
+      // 注意：Python `-c` 单行脚本里 `if row: import sys;` 是非法语法（import 不能跟在 if 同行）
+      // 提前 import sys，用 `sys.stdout.write(row[0]) if row else None` 替代 if 行
       const script =
-        "import sqlite3,os;" +
+        "import sqlite3,os,sys;" +
         "db=os.path.join(os.path.expanduser('~'),'.local','share','opencode','opencode.db');" +
         "con=sqlite3.connect(db);" +
         "row=con.execute(\"SELECT value FROM kv WHERE key='models-dev:catalog'\").fetchone();" +
         "con.close();" +
-        "if row: import sys; sys.stdout.write(row[0])"
+        "sys.stdout.write(row[0]) if row else None"
       const r = spawn(py, ["-c", script], { stdio: ["ignore", "pipe", "pipe"] })
       let out = ""
+      let err = ""
       r.stdout.on("data", (d) => (out += d))
+      r.stderr.on("data", (d) => (err += d))
       r.on("close", () => {
         try {
           if (out.trim()) resolve(JSON.parse(out.trim()))
-          else resolve(null)
+          else {
+            log("[oc-session-all] mmReadCatalog 空结果 err:" + err.slice(0, 200))
+            resolve(null)
+          }
         } catch (e) {
+          log("[oc-session-all] mmReadCatalog parse 失败: " + e.message + " err:" + err.slice(0, 120))
           resolve(null)
         }
       })
-      r.on("error", () => resolve(null))
+      r.on("error", (e) => {
+        log("[oc-session-all] mmReadCatalog spawn error: " + e.message)
+        resolve(null)
+      })
     } catch (e) {
+      log("[oc-session-all] mmReadCatalog 异常: " + e.message)
       resolve(null)
     }
   })