Restore download statistics and completion listener notifications

[Copilot]

Automatic updates could succeed without invoking AddListenerMultiDownloadStatistics or AddListenerMultiDownloadCompleted. Client and OSS strategies omitted the progress bridge, which also lacked statistics event dispatch.

• Connect notifications: Pass the synchronous event bridge to default and injected download orchestrators in both strategies.
• Restore statistics: Dispatch legacy statistics alongside generic progress, preserving completion behavior. Report byte counts and percentage; document unavailable speed/ETA as empty string/zero.
• Regression coverage: Cover strategy wiring, completion callbacks, and statistics with known or unknown download sizes.

• Fixes [ERROR] AddListenerMultiDownloadStatistics和AddListenerMultiDownloadCompleted没有触发 #536

[Copilot]

Copilot review overview

🟡 Changes recommended

A critical compatibility issue causes the statistics version information to be lost.

Get a fresh assessment by requesting another Copilot review.

Review effort: Lite
Findings: 1

Open (1)

• Preserve VersionEntry in restored statistics progress events · New

What changed in this PR

Restores download progress, statistics, and completion notifications across client and OSS strategies.

Changes:

• Wires progress bridges into download orchestrators.
• Dispatches legacy statistics events.
• Adds regression coverage for notification behavior and download sizes.

File	Summary
tests/​CoreTest/​Strategy/​DownloadEventTests.cs	Tests strategy notification wiring.
tests/​CoreTest/​Download/​DownloadProgressReporterTests.cs	Tests statistics and completion behavior.
src/​GeneralUpdate.Core/​Strategy/​OssStrategy.cs	Wires OSS download progress events.
src/​GeneralUpdate.Core/​Strategy/​ClientStrategy.cs	Wires client download progress events.
src/​GeneralUpdate.Core/​Download/​Progress/​DownloadProgressReporter.cs	Dispatches legacy statistics notifications.

---

💡 Add a code-review agent skill or configure MCP servers for context-aware, tailored reviews. Learn more in the docs.

[Copilot]

Fixed in 6eb5c48. The download progress pipeline now preserves and forwards the original version object via VersionContext, and MultiDownloadStatisticsEventArgs.Version uses that object when available instead of the asset filename.

[JusterZhu]

@copilot 事件不触发的问题都解决了吗

[Copilot]

@copilot 事件不触发的问题都解决了吗

是的，这次“事件不触发”的主链路已经修复：Client/Oss 两个策略都已接入 CreateEventBridge()，并且 DownloadProgressReporter 会在进度上报时分发 MultiDownloadStatistics，完成时分发 MultiDownloadCompleted。我这边也补了对应回归测试并已通过。