feat(redis): Update Redis configuration and enhance compatibility with Docker

- Changed Redis port mapping in `docker-compose.yml` from `6379:6379` to `6380:6379` to avoid conflicts with Windows Redis.
- Updated `.env.example` to reflect the new Redis URL (`redis://127.0.0.1:6380/0`), ensuring proper configuration for Docker users.
- Enhanced Redis client initialization in `database.py` and `redis_gateway.py` to utilize a new `_redis_kwargs` function for improved compatibility with Windows Redis 3.x and Docker Redis 7.
- Added a new PowerShell script `start-redis.ps1` to facilitate starting Redis in Docker, providing a seamless setup experience for developers.

This update significantly improves the Redis integration, ensuring a smoother development process and better compatibility across environments.

scripts/dev/start-redis.ps1

@@ -0,0 +1,44 @@
+#Requires -Version 5.1
+<#
+.SYNOPSIS
+  启动本机 Redis（Docker 优先，与 docker-compose.yml 一致）。
+.EXAMPLE
+  .\scripts\dev\start-redis.ps1
+.NOTES
+  连接串：.env REDIS_URL=redis://127.0.0.1:6380/0（Docker 映射，避开本机 Windows Redis 占 6379）
+#>
+$ErrorActionPreference = "Stop"
+$Root = Split-Path (Split-Path $PSScriptRoot -Parent) -Parent
+Set-Location $Root
+
+function Test-DockerRedis {
+    try {
+        $p = docker exec jinrong-redis redis-cli ping 2>$null
+        return $p -match "PONG"
+    } catch {
+        return $false
+    }
+}
+
+if (-not (Get-Command docker -ErrorAction SilentlyContinue)) {
+    Write-Host "未找到 docker 命令，请先启动 Docker Desktop。" -ForegroundColor Red
+    exit 1
+}
+
+$winRedis = Get-Service -Name "Redis" -ErrorAction SilentlyContinue
+if ($winRedis -and $winRedis.Status -eq "Running") {
+    Write-Host "提示：本机 Windows Redis 仍占 6379；项目已改用 Docker 6380 → 见 .env REDIS_URL" -ForegroundColor DarkYellow
+}
+
+Write-Host "启动 Docker Redis (jinrong-redis @ 127.0.0.1:6380)..." -ForegroundColor Cyan
+docker compose up -d redis
+Start-Sleep -Seconds 2
+
+if (Test-DockerRedis) {
+    docker compose ps redis
+    Write-Host "Docker Redis 就绪 (redis:7-alpine @ 127.0.0.1:6380)" -ForegroundColor Green
+    exit 0
+}
+
+Write-Host "Docker Redis 未响应。请检查 Docker Desktop 是否运行：docker compose logs redis" -ForegroundColor Red
+exit 1