Add comprehensive file naming and versioning standards

- Add FILE-NAMING-AND-VERSIONING.md with complete Semantic Versioning 2.0.0 and Harvard Data Management file naming conventions
- Update README.md with file naming standards and semantic versioning workflow
- Update KICAD-PROJECT-TEMPLATE.md with comprehensive file naming examples and git workflow
- Update hardware/bom/README.md with standardized BOM file naming conventions
- Update manufacturing/gerbers/README.md with production-ready Gerber file naming
- Update mechanical/stl/README.md with 3D printing file naming including material suffixes
- Implement YYYY-MM-DD date format and hyphen-separated naming throughout
- Add versioning strategies for hardware, software, and documentation components
- Include git tagging strategy and release management guidelines
- Provide comprehensive examples for all file types and directories

mechanical/stl/README.md

@@ -42,11 +42,27 @@ stl/
 ```
 
 ## File Naming Convention
-Use descriptive names that include key specifications:
-- `PCB-Mount-Bracket_M3-Holes_v2.1.stl`
-- `Sensor-Housing-Top_IP65_ABS.stl`
-- `Cable-Gland_PG16_TPU-Flexible.stl`
-- `Assembly-Jig_Main-PCB_PLA.stl`
+Following [FILE-NAMING-AND-VERSIONING.md](../../FILE-NAMING-AND-VERSIONING.md) standards:
+- `project-name_pcb-mount-bracket_v2.1.0_petg.stl`
+- `project-name_sensor-housing-top_v1.0.0_abs.stl`
+- `project-name_cable-gland_v1.2.0_tpu.stl`
+- `project-name_assembly-jig_v1.0.0_pla.stl`
+
+### Naming Structure
+`[project-name]_[component-description]_[version]_[material].stl`
+
+### Material Suffixes
+- `_pla` - PLA filament
+- `_petg` - PETG filament
+- `_abs` - ABS filament
+- `_tpu` - TPU flexible filament
+- `_asa` - ASA filament
+- `_pc` - Polycarbonate filament
+
+### Versioning Strategy
+- **MAJOR**: Dimensional changes affecting fit/function
+- **MINOR**: Feature additions, improvements
+- **PATCH**: Print setting optimizations, minor corrections
 
 ## Print Settings Documentation
 Include recommended print settings for each component: