- Add remote route diagnostic helpers in dashboard routes to classify timeout, transport, and unexpected errors with consistent context fields
- Apply structured runtime logging to mesh sync settings handling and both proxy paths (SSE and wildcard) for fetch and stream failure stages
- Preserve existing HTTP behavior while enriching diagnostics with node ID, upstream path, operation stage, and normalized error metadata
- Expand mesh and proxy route test suites with runtime logger harness assertions covering structured warn/error diagnostics
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