Fix axis data 487

[Subomiadekunle]

Pull Request Summary

Closes #487

Fixes the Axis bone showing as a blank entry in Vertebrae → Bone, with none of its bone parts available.

Changes:

• bones/axis.json: removed the outer [ ] so it's a single object like the other bone files, and renamed axis_body_(dens) to axis_body (parentheses aren't allowed in bone IDs)
• descriptions/axis_body_description.json: was empty; now holds the Body (Dens) description (moved from axis_body_(dens)_description.json, which is deleted)
• Renamed axis_transverse_formaen_colored_regions.json to axis_transverse_foramen_... to fix a typo
• legacyCompatibility.test.js: changed the it.failing Axis test to a normal it(), and added Axis and Body (Dens) to the representative items

Tested: npm test passes 8/8 suites (136 passed, 5 pre-existing skips). npm run lint passes. Checked on localhost: Axis and all 7 b
BEFORE AND AFTER:

one parts appear and load their descriptions and images.

[Before: blank Axis entry]
[After: Axis selected, showing bone parts and images]

PR Checklist

• Project builds and runs
• Tests and linters pass
• Any related documentation has been updated, including JSDoc comments or docstrings

Detailed Description

The search cache grows from 192 to 199 items because Axis's 7 bone parts are now loaded. "Transverse foramen" still has no images listed in its description file; that's a content gap, not part of this fix.

[mudabs]

Fix resolved. Thank you!