fix(authorization): 增大 progress_percentage 字段精度避免溢出

将 stickman_rankings 表的 progress_percentage 字段从 DECIMAL(5,2)
改为 DECIMAL(10,2)，以支持超过 999.99% 的进度百分比。

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/services/authorization-service/prisma/migrations/20251223000000_increase_progress_percentage_precision/migration.sql

@@ -0,0 +1,4 @@
+-- AlterTable: Increase progress_percentage precision from DECIMAL(5,2) to DECIMAL(10,2)
+-- This allows storing percentages greater than 999.99% (e.g., when cumulative completed far exceeds target)
+
+ALTER TABLE "stickman_rankings" ALTER COLUMN "progress_percentage" TYPE DECIMAL(10, 2);

backend/services/authorization-service/prisma/schema.prisma

@@ -308,7 +308,7 @@ model StickmanRanking {
   currentMonth        String   @map("current_month")
   cumulativeCompleted Int      @map("cumulative_completed")
   cumulativeTarget    Int      @map("cumulative_target")
-  progressPercentage  Decimal  @map("progress_percentage") @db.Decimal(5, 2)
+  progressPercentage  Decimal  @map("progress_percentage") @db.Decimal(10, 2)
   exceedRatio         Decimal  @map("exceed_ratio") @db.Decimal(10, 4)
 
   // 排名