feat: add GET /v1/admin/log/message/detail endpoint

Adds a temporary admin endpoint to query log_message by ID,
returning the full record including context (JSON) and digest
fields that the existing /error_message/detail endpoint omits.

Co-authored-by: multica-agent <github@multica.ai>

apis/admin/log.api

@@ -239,6 +239,30 @@ type (
 		OccurredAt int64  `json:"occurred_at"`
 		CreatedAt  int64  `json:"created_at"`
 	}
+	GetLogMessageRawRequest {
+		Id int64 `form:"id" validate:"required"`
+	}
+	GetLogMessageRawResponse {
+		Id         int64       `json:"id"`
+		Platform   string      `json:"platform"`
+		AppVersion string      `json:"app_version"`
+		OsName     string      `json:"os_name"`
+		OsVersion  string      `json:"os_version"`
+		DeviceId   string      `json:"device_id"`
+		UserId     *int64      `json:"user_id"`
+		SessionId  string      `json:"session_id"`
+		Level      uint8       `json:"level"`
+		ErrorCode  string      `json:"error_code"`
+		Message    string      `json:"message"`
+		Stack      string      `json:"stack"`
+		Context    interface{} `json:"context"`
+		ClientIP   string      `json:"client_ip"`
+		UserAgent  string      `json:"user_agent"`
+		Locale     string      `json:"locale"`
+		Digest     string      `json:"digest"`
+		OccurredAt int64       `json:"occurred_at"`
+		CreatedAt  int64       `json:"created_at"`
+	}
 )
 
 @server (
@@ -314,5 +338,9 @@ service ppanel {
 	@doc "Get error log message detail"
 	@handler GetErrorLogMessageDetail
 	get /error_message/detail returns (GetErrorLogMessageDetailResponse)
+
+	@doc "Get log message raw detail (temporary)"
+	@handler GetLogMessageRaw
+	get /message/detail (GetLogMessageRawRequest) returns (GetLogMessageRawResponse)
 }