feat: Enhance filecache#823

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Yundi339 wants to merge 14 commits intoithewei:masterfrom

Yundi339:feature/enhanced-filecache

Commits on Mar 29, 2026

refactor: replace FileCache with FileCacheEx in HttpHandler and HttpServer
Yundi339
committed

Commits on Apr 7, 2026

refactor: update FileCache to change nread type from ssize_t to int in Open method
Yundi339
committed

Commits on Apr 10, 2026