Refine repository structure for KiCad 9 optimization

- Add dedicated /kicad/ directory with organized subdirectories for libraries, schematics, gerbers, plots, and backups
- Create comprehensive KiCad 9 library structure (symbols, footprints, 3D models)
- Add manufacturing-ready directories for production files (gerbers, drill, pick-and-place)
- Update all README files with KiCad-specific documentation and workflows
- Add KiCad-optimized .gitignore file for proper version control
- Create KICAD-PROJECT-TEMPLATE.md comprehensive usage guide
- Add hardware assembly documentation and BOM management
- Include detailed manufacturing file generation instructions
- Add docs structure with design-notes and user-manual directories
- Provide complete workflow from design to manufacturing with quality checklists

manufacturing/README.md

@@ -1,3 +1,63 @@
 # /manufacturing
 
-Production and assembly files.
+Production-ready files for PCB fabrication and assembly.
+
+## Purpose
+This directory contains final, production-ready files for manufacturing your KiCad project:
+- Final Gerber files for PCB fabrication
+- Drill files for hole drilling
+- Pick and place files for automated assembly
+- Assembly instructions for production
+
+## Directory Structure
+- `gerbers/` - Final Gerber files for PCB fabrication
+- `drill/` - Drill files and hole specifications
+- `pick-and-place/` - Pick and place files for automated assembly
+- `assembly/` - Production assembly instructions and documentation
+
+## Manufacturing Workflow
+1. **Design Complete**: Finalize your KiCad design
+2. **Generate Files**: Create production files from KiCad
+3. **Review**: Verify all files using Gerber viewers
+4. **Package**: Prepare files for manufacturer submission
+5. **Submit**: Send to PCB fabricator and/or assembler
+
+## File Generation from KiCad
+### Gerber Files
+1. Open PCB (`.kicad_pcb`)
+2. **File → Fabrication Outputs → Gerbers**
+3. Select all required layers
+4. Set output to `manufacturing/gerbers/`
+5. Generate files
+
+### Drill Files
+1. In Gerber plot dialog, click **Generate Drill Files**
+2. Set output to `manufacturing/drill/`
+3. Configure drill file format
+4. Generate files
+
+### Pick and Place
+1. **File → Fabrication Outputs → Component Placement**
+2. Set output to `manufacturing/pick-and-place/`
+3. Configure format (CSV recommended)
+4. Generate files
+
+## Quality Assurance
+- Review all files with Gerber viewer
+- Verify drill file completeness
+- Check pick and place coordinates
+- Validate BOM against placement files
+- Test with manufacturer's online tools
+
+## Manufacturer Submission
+- Package all files in organized ZIP
+- Include clear documentation
+- Specify PCB specifications (thickness, color, finish)
+- Provide assembly requirements
+- Include contact information for questions
+
+## Version Control
+- Tag releases with manufacturing file sets
+- Include version numbers in file names
+- Document any changes from previous versions
+- Maintain traceability to design files