[Bug] Chat requests to LAN HTTP provider fail with EHOSTUNREACH while Test Provider succeeds

[chilin11]

What happened? / 问题描述

After updating to v0.15.0, an OpenAI-compatible provider on the local network passes “Test Provider”, but every real chat request fails with “Network error”.

The two paths behave differently: provider testing succeeds, while the agent sidecar request fails before receiving an HTTP response. Launching PI-Desktop from Terminal triggers Terminal’s Local Network permission prompt; after granting it, chat requests work. PI-Desktop itself does not appear under System Settings → Privacy & Security → Local Network.

Steps to reproduce / 复现步骤

1. Configure an OpenAI-compatible provider using an HTTP endpoint on the LAN.
2. In Settings, run Test Provider; it succeeds.
3. Start a chat using a model from that provider.
4. The request retries and ends with Network error.
5. Fully quit PI-Desktop.
6. Launch /Applications/PI-Desktop.app/Contents/MacOS/PI-Desktop from Terminal.
7. Allow Terminal local-network access when macOS prompts.
8. Retry the same chat; it succeeds.

Expected behavior / 预期行为

Chat requests should reach the same LAN provider that passes Test Provider, regardless of whether PI-Desktop was launched from Finder or Terminal.

Actual behavior / 实际行为

When launched normally, chat requests fail after retries with NETWORK_ERROR / EHOSTUNREACH on the direct route. Test Provider still succeeds. Launching from Terminal and granting Terminal local-network permission makes chat requests work.

App version / 应用版本

0.15.0

Operating system / 操作系统

macOS

Extra environment / 其他环境信息

macOS 26.6.2, Apple Silicon (arm64), DMG installation. Network proxy mode: direct. Provider: OpenAI-compatible API over HTTP on the local LAN.

Logs / 日志

`agent.turn.failed`

- code: `NETWORK_ERROR`
- message: `Connection error.`
- networkCategory: `unreachable`
- networkCode: `EHOSTUNREACH`
- networkSyscall: `connect`
- networkRoute: `direct`
- phase: `request`
- retryAttempt: `10`

Screenshots / 截图

No response

[vastsa]

已在本地修复

[vastsa]

复核确认已修复并在当前 main：提交 58468fc（fix(desktop): declare macOS Local Network usage so agent sidecar can reach LAN providers (#573)）已声明 macOS Local Network 权限，解决 Agent sidecar 访问局域网 Provider 时的 EHOSTUNREACH。