style(copy): question bank copy pass

[Bissbert]

Summary

• Audited all 50 YAML files in src/content/questions/**/*.yaml for em-dashes, AmE spellings, AI-cadence patterns, and login/account mentions
• Removed 3 em-dashes from _example/example-mcq.yaml (comment header, rationaleCorrect parenthetical, metadata comment); replaced with colons and semicolons per the project style rule established in PR style(lang): British English compliance and AI-tell removal across UI strings #20
• One em-dash remains in that file at line 140: it is part of an official GIA publication title in a citation string and has not been altered

What changed

Category	Count	Files
Em-dashes removed	3	_example/example-mcq.yaml
AmE spellings fixed	0	— all 50 files already use BrE
AI-cadence patterns fixed	0	— none found
Login/account mentions	0	— none found
Files modified	1	_example/example-mcq.yaml

Before / After examples

Line 2 (comment header)
Before: # EXAMPLE QUESTION — for curator reference and scaffolder template only.
After: # EXAMPLE QUESTION: for curator reference and scaffolder template only.

Lines 82-83 (rationaleCorrect parenthetical)
Before: fluorescence alone is never diagnostic — some Burma spinel also / fluoresces red — so it confirms but does not establish the identification.
After: fluorescence alone is never diagnostic; some Burma spinel also / fluoresces red, so it confirms but does not establish the identification.

Line 111 (metadata comment)
Before: # High-value metadata — populate whenever there is a known confusion pair.
After: # High-value metadata: populate whenever there is a known confusion pair.

Learn content findings (forward to upstream gemmology-knowledge)

AmE spellings found in src/content/learn/ — these are synced from a separate repo and must be patched upstream. Top hits:

1. fundamentals/crystal-systems.yaml:34 — Center of Symmetry (BrE: Centre)
2. fundamentals/colour-theory.yaml:23 — Physics and Chemistry of Color (publication title — leave)
3. fundamentals/colour-theory.yaml:381 — Physics and Chemistry of Color (publication title — leave)
4. fundamentals/colour-theory.yaml:391 — color in beryl (in journal article title — leave)
5. fundamentals/physical-properties.yaml:515 — Physics and Chemistry of Color (publication title — leave)
6. equipment/chelsea-colour-filter.yaml:146 — Chemistry of Color (publication title — leave)
7. origin/tajikistan.yaml:141 — Color Mechanism in citation (journal article title — leave)
8. origin/pakistan/topaz.yaml:48 — "the color is due (quoted source text — leave as quoted)
9. origin/pakistan/emerald.yaml:60 — "small stones with saturated color" (quoted source — leave)
10. origin/brazil/tourmaline.yaml:92 — Pink center, green rim (BrE: centre)
11. origin/russia/demantoid.yaml:137 — aluminum content (BrE: aluminium)
12. origin/ethiopia.yaml:44 — Play-of-Color Opal (journal article title — leave)
13. origin/ethiopia.yaml:179 — Play-of-Color Opal (journal article title — leave)
14. market/professional-practice.yaml:168 — FTC Guides for Jewelry Industry (proper name — leave)
15. phenomena/fire-dispersion.yaml:150 — Chemistry of Color in citation (publication title — leave)
16. phenomena/tenebrescence.yaml:40 — the color-active sulfur species (BrE: colour-active)
17. phenomena/schiller.yaml:133 — ideal behavior of thicknesses (BrE: behaviour)

Actionable upstream fixes (non-title, non-quoted body copy): items 1, 10, 11, 16, 17 — five instances across four files.

Test plan

• npm run validate:questions — 50/50 pass
• npm run build — 912 pages built, 0 errors

[github-actions]

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