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Optimize dashboard by moving system metrics collection to spawn_blocking#210

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jules-fix-optimize-dashboard-17805997636092625608
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Optimize dashboard by moving system metrics collection to spawn_blocking#210
Cylae wants to merge 1 commit intomainfrom
jules-fix-optimize-dashboard-17805997636092625608

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@Cylae
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@Cylae Cylae commented Mar 3, 2026

This PR implements optimizations and fixes for the web dashboard, and updates the README.md to reflect them:

  • Moves the blocking system metric collection (CPU, memory, disks) to a background thread using tokio::task::spawn_blocking. This prevents blocking the async runtime loop and fulfills the optimization directives in memory.
  • Fixes unsafe unwrap calls when locking system and last_system_refresh in server_manager/src/interface/web.rs, replacing them with safe match expressions.
  • Updates README.md by adding an "Optimizations & Performance" section in both English and French describing the async I/O strategy, caching model, hardware detection logic, and zero-allocation HTML generation strategies.

PR created automatically by Jules for task 17805997636092625608 started by @Cylae

- Wrap the `System` metric polling (`sys.refresh_cpu()`, etc.) inside `tokio::task::spawn_blocking` to decouple it from the main Tokio async executor.
- Remove instances of `.unwrap()` when acquiring mutex locks on the `AppState` in the dashboard, replacing them with proper pattern matching to handle poisoned states gracefully.
- Update `README.md` to document optimizations in both English and French.
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