PiUI v0.6.15

• test(server): 覆盖快照握手与静态 registry 兜底 (36f4d36)
• perf(server): 延迟 chokidar 建立，避开 bun 启动事件循环阻塞 (e5e48cf)
• fix(desktop): 服务收养/停止等待预算对齐 server 关闭 deadline (91e555b)
• fix(app): 后端就绪探测固定间隔重试、会话列表失败保留 (5706913)
• perf(pi-worker): jiti 转译缓存落到可写数据目录 (4d99041)
• perf(server): registry 静态兜底，worker 未就绪也能回答能力表 (21e77cc)
• perf(server): health/registry 走只读快照、worker 预热与 listen 并行、关闭预算对齐 (cde3ff8)

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Portable: Windows (.zip), Linux (.tar.gz), macOS (.tar.gz)
Desktop: Windows (.exe), macOS (.dmg), Linux (.deb, .AppImage)
Mobile: Android (.apk) — arm64, armeabi-v7a