diff --git a/Sources/Services/Feishu/FeishuError.swift b/Sources/Services/Feishu/FeishuError.swift
index 6ead02c..0f10347 100644
--- a/Sources/Services/Feishu/FeishuError.swift
+++ b/Sources/Services/Feishu/FeishuError.swift
@@ -4,7 +4,7 @@ enum FeishuError: Error, LocalizedError {
     case unauthorized
     case networkError(Error?)
     case apiError(code: Int, message: String)
-    case decodingError(Error)
+    case decodingError(Error, rawBody: String? = nil)
     case notConfigured
     case missingCredentials
 
@@ -16,8 +16,11 @@ enum FeishuError: Error, LocalizedError {
             return "Network error: \(error?.localizedDescription ?? "Unknown")"
         case .apiError(let code, let message):
             return "Feishu API error (\(code)): \(message)"
-        case .decodingError:
-            return "Failed to parse Feishu response. Field mappings may be incorrect."
+        case .decodingError(let error, let rawBody):
+            if let rawBody {
+                return "Failed to parse Feishu response: \(rawBody)"
+            }
+            return "Failed to parse Feishu response. Field mappings may be incorrect. (\(error.localizedDescription))"
         case .notConfigured:
             return "Feishu table not configured. Open Settings."
         case .missingCredentials:
diff --git a/Sources/Services/Feishu/FeishuService.swift b/Sources/Services/Feishu/FeishuService.swift
index debe2e3..cf35e86 100644
--- a/Sources/Services/Feishu/FeishuService.swift
+++ b/Sources/Services/Feishu/FeishuService.swift
@@ -78,6 +78,10 @@ final class FeishuService {
         guard let httpResponse = response as? HTTPURLResponse else {
             throw FeishuError.networkError(nil)
         }
+
+        let rawBody = String(data: data, encoding: .utf8) ?? "<binary \(data.count)B>"
+        BuggerLog.debug("fetchPage: HTTP \(httpResponse.statusCode) body=\(String(rawBody.prefix(500)))")
+
         if httpResponse.statusCode == 401 {
             throw FeishuError.unauthorized
         }
@@ -86,7 +90,9 @@ final class FeishuService {
         do {
             apiResponse = try decoder.decode(FeishuAPIResponse<RecordListData>.self, from: data)
         } catch {
-            throw FeishuError.decodingError(error)
+            BuggerLog.error("fetchPage: decode FAILED: \(error)")
+            BuggerLog.error("fetchPage: raw body: \(String(rawBody.prefix(1000)))")
+            throw FeishuError.decodingError(error, rawBody: String(rawBody.prefix(200)))
         }
 
         guard apiResponse.code == 0, let pageData = apiResponse.data else {