refactor(types): align entity types with backend API responses

Adjust all entity types to match actual backend response shapes.
String-typed numeric fields (Shop.rating, Shop.commissionValue,
WalletTransaction.amount) now correctly typed as strings.
Post.linkedOrderId changed from SnowflakeId to number (backend int64).
Removed fields absent from backend: Order consumer/player/shopName,
Review fromUserAvatar/toUserId, Dispute initiatorId/initiatorName,
Post authorRole/quotedPostId, Comment postId, ChatSession
readonly/lastMessageAt, ChatMessage senderName/senderAvatar.
Added Player.gender field.

tests/income-calculation.test.ts

@@ -5,7 +5,7 @@ describe("calculateOrderIncome", () => {
   it("calculates percentage commission income", () => {
     const result = calculateOrderIncome(100, {
       commissionType: "percentage",
-      commissionValue: 12,
+      commissionValue: "12",
     })
 
     expect(result).toEqual({
@@ -17,7 +17,7 @@ describe("calculateOrderIncome", () => {
   it("calculates fixed commission income", () => {
     const result = calculateOrderIncome(60, {
       commissionType: "fixed",
-      commissionValue: 8,
+      commissionValue: "8",
     })
 
     expect(result).toEqual({
@@ -38,7 +38,7 @@ describe("calculateOrderIncome", () => {
   it("does not return negative income for fixed commission", () => {
     const result = calculateOrderIncome(6, {
       commissionType: "fixed",
-      commissionValue: 8,
+      commissionValue: "8",
     })
 
     expect(result.income).toBe(0)