docs: update rc3 benchmark report

[suckserberg]

Summary

Updates README, docs, benchmark report, and raw benchmark data for the rc.3 candidate.

Technical Implementation

• Updates benchmark tables from benchmark/benchmark-result.json.
• Adds QuickNet as a benchmark candidate.
• Clarifies Kbps p50 units and invalid partial rows.
• Updates docs for the current batching defaults and reliable delta path.

Changelog Entry

• Benchmark Report: Updated rc.3 benchmark docs and raw results. Adds QuickNet rows and current Kbps p50 tables.

Type of Change

• Feature
• Bug Fix
• Performance Optimization
• Documentation Update
• Maintenance / Chore

Verification

• I have adhered to the Development Patterns.
• I have verified that all CI/CD linting and formatting checks pass.
• I have confirmed the changes within a Rojo-supported environment.
• I have updated the technical documentation for any API or architectural changes.

[protheeuz]