KiCad PCB Layout Optimization -- 2

I have a working KiCad project that now needs a professional polish. The board functions, but I want the layout tightened up, every DRC error resolved, and the accompanying Modbus-related schematic given a sanity check.

Priority
• Layout optimisation comes first. Please reshape trace routing, component placement, and copper pours for signal integrity, manufacturability, and neatness.

Scope of review
• Clear all current Design Rule Check (DRC) errors.
• Apply the custom design rules I will supply (track/clearance, via sizes, board outline, etc.).
• Walk through the Modbus section of the schematic and flag any termination, isolation, or protection issues you spot.

Deliverables
1. Updated KiCad project files (schematic + PCB) with my rules loaded.
2. A brief change log highlighting layout improvements and the DRC issues you fixed.
3. A short report on the Modbus schematic review with any recommendations.

I am not asking for part-specific tweaks; just an overall pass for best-practice layout and error-free output files that are ready for manufacturing. If you work in KiCad 6 or later, that fits perfectly with my file set. Let me know your estimated turnaround, and we can kick things off as soon as you receive the design-rule file.