Implement wiki structure for team training
Entities flattened (compile fix):
- entities/students/ → entities/ (bruno.md, riley.md moved up)
- Added structured frontmatter (skills, status, track)
- Added related hub links
New training hub:
- training/hubs/swere-training-hub.md — learning path from motor to autonomous
- Links: NEO Vortex, SPARK Flex, MK4i, Canjectors, YAGSL, PhotonVision
- Level 1: Motor + controller
- Level 2: Swerve modules
- Level 3: Software + odometry
- Student progress tracking table
This enables the Fabric to surface learning gaps before students hit them.
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