fix: update service port from 8080 to 8819 across configuration files

Caddyfile

@@ -1,12 +1,12 @@
 xieyaxin.top:8899 {
     @api path /api/*
     handle @api {
-        reverse_proxy localhost:8080
+        reverse_proxy localhost:8819
     }
 
     @shortcode path_regexp shortcode ^/[a-zA-Z0-9]{7}$
     handle @shortcode {
-        reverse_proxy localhost:8080
+        reverse_proxy localhost:8819
     }
 
     handle {

README.md

@@ -6,8 +6,8 @@
 
 ```
 用户请求 → Caddy
-  ├── /api/*          → Go 后端 :8080
-  ├── /[a-zA-Z0-9]{7} → Go 后端 :8080 (短码重定向)
+  ├── /api/*          → Go 后端 :8819
+  ├── /[a-zA-Z0-9]{7} → Go 后端 :8819 (短码重定向)
   └── 其他            → 静态文件 /opt/short-link/frontend
 ```
 
@@ -28,8 +28,8 @@ cd backend
 # 安装依赖
 go mod tidy
 
-# 运行 (默认 :8080)
-ADDR=:8080 DOMAIN=http://localhost:8080 DB_PATH=./data.db ADMIN_TOKEN=dev go run .
+# 运行 (默认 :8819)
+ADDR=:8819 DOMAIN=http://localhost:8819 DB_PATH=./data.db ADMIN_TOKEN=dev go run .
 
 # 运行测试
 go test ./...
@@ -98,8 +98,8 @@ systemctl reload caddy
 
 | 环境变量 | 默认值 | 说明 |
 |----------|--------|------|
-| `ADDR` | `:8080` | 监听地址 |
-| `DOMAIN` | `http://localhost:8080` | 短链接域名，用于拼接 short_url |
+| `ADDR` | `:8819` | 监听地址 |
+| `DOMAIN` | `http://localhost:8819` | 短链接域名，用于拼接 short_url |
 | `DB_PATH` | `./data.db` | JSON 数据文件路径 |
 | `ADMIN_TOKEN` | (空) | 管理员 Bearer Token，空值时所有管理接口返回 401 |
 

backend/main.go

@@ -13,7 +13,7 @@ import (
 )
 
 func main() {
-	port := flag.String("port", "8080", "listen port")
+	port := flag.String("port", "8819", "listen port")
 	dbPath := flag.String("db", "shortlink.db", "sqlite database path")
 	baseURL := flag.String("base-url", "", "base url for short links (e.g. https://xieyaxin.top:8899)")
 	flag.Parse()

frontend/vite.config.js

@@ -5,8 +5,8 @@ export default defineConfig({
   plugins: [svelte()],
   server: {
     proxy: {
-      '/api': 'http://localhost:8080',
-      '^/[a-zA-Z0-9]{7}$': 'http://localhost:8080'
+      '/api': 'http://localhost:8819',
+      '^/[a-zA-Z0-9]{7}$': 'http://localhost:8819'
     }
   }
 });

short-link.service

@@ -7,7 +7,7 @@ Type=simple
 ExecStart=/opt/short-link/short-link-server
 Environment=DB_PATH=/opt/short-link/data
 Environment=DOMAIN=https://xieyaxin.top:8899
-Environment=ADDR=:8080
+Environment=ADDR=:8819
 Environment=ADMIN_TOKEN=asdaersfdgfdhtretewfsddfgfdgdsfs
 Restart=always
 RestartSec=5