fix(display): keep enumeration alive without source id 0 - #1238

No actionable comments were generated in the recent review.

Summary by CodeRabbit

• 问题修复
  • 改善了 Windows 显示设备的识别稳定性，不再受显示路径排列顺序影响。
  • 无法找到有效显示路径的设备将被跳过；没有可识别设备时会正确返回无可用设备的状态。

Walkthrough

Windows 设备拓扑代码现在记录活动路径的 source ID，并使用代表路径选择结果枚举设备。路径不可用或无有效设备时，代码会记录警告并跳过设备或返回 boost::none。

Changes

Windows 显示设备路径选择

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Bug fix

Suggested reviewers: qiin2333

Merge Risk: Minimal · up to beab0

The change keeps display enumeration from crashing when a device has no source id 0 or no active source. No actionable merge-blocking risk remains. The author did not retest on a machine with an incomplete adapter.

Pre-merge checks: 4

Check name	Status	Explanation
Title check		标题“fix(display): keep enumeration alive without source id 0”与变更内容相符。变更移除了对无活动源设备必为源 ID 0 的假设，改用已记录的活动源或索引最小的路径，并在越界时跳过设备，从而避免 map::at(0) 抛出 std::out_of_range 导致进程终止。标题指出了主要修复点，并具体说明了显示枚举相关的问题。
Description check		描述与变更直接相关。描述说明了枚举显示器时不再假定源 ID 为 0、活动源的回退策略、越界时跳过设备并记录警告、同一设备后出现的活动路径也会被记录，并给出了崩溃背景和验证方式。这些内容都对应 device_topology.cpp 中的改动。
Linked Issues check		Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check		Check skipped because no linked issues were found for this pull request.

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Recent review info

Run configuration

• Source mode: Auto
• Repository: AlkaidLab/foundation-sunshine
• Branch: fix/display-enum-missing-source
• File: .coderabbit.yaml
• Commit: beab033
• Layers: Repository YAML
• Review profile: CHILL
• Plan: Advanced
• Run ID: 5615a237-fe25-433b-a0bb-ed89f8fbb35d

Commits

Reviewing files that changed from the base of the PR and between 6225dcb and beab033.

Files selected for processing: 1

• src/platform/windows/display_device/device_topology.cpp

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Additional context used

Path-based instructions: 2

平台抽象层代码（Windows/Linux/macOS）。确保各平台实现一致， 注意 Windows API 调用的错误处理和资源释放。

CodeRabbit configuration file

Files:

• src/platform/windows/display_device/device_topology.cpp

Sunshine 核心 C++ 源码，自托管游戏串流服务器。审查要点：内存安全、 线程安全、RAII 资源管理、安全漏洞。注意预处理宏控制的平台相关代码。

CodeRabbit configuration file

Files:

• src/platform/windows/display_device/device_topology.cpp