v1.1.1 — British English compliance and AI-tell removal

Style sweep — no content change

This release contains a style-only language sweep across the FGA learn content. No information, schema, or structure has changed; only how prose is displayed.

Changes

• Em-dashes: 742 → 26 across 84 YAML files. The 26 remaining instances are "—" null-cell markers in tables (crystal-systems.yaml, other-tools.yaml) and are intentional. All prose em-dashes have been replaced with the Oxford spaced en-dash – or, where two clauses can stand alone, with full stops, semicolons, colons, or parentheses.
• AmE → BrE: traveling → travelling in fundamentals/optical-properties.yaml. Citation titles, journal names, author names, mineral species, and chemical formulas were preserved verbatim regardless of spelling.
• AI-tell phrases removed: three "in today's [X] market" phrasings recast in species/pearl.yaml, origin/burma/ruby.yaml, and origin/east-africa/tsavorite.yaml.

Verification

• All YAML files parse cleanly.
• biss-languages:british-grammar validation pass on the diff.
• Zero AmE prose remaining in non-citation strings; zero AI-tell phrases.

Downstream

gemmology.dev picks up this content via npm run sync on its next build. No code change required on the website side.

Merged PRs

• #3 — style(lang): British English compliance and AI-tell removal across learn content

v1.1.0 — FGA Foundation + Diploma coverage gap-fill

What's new

Closes ~70 distinct content gaps from the May 2026 Gem-A FGA syllabus audit. Foundation coverage 72% → ~100%; Diploma coverage 47% → ≥80%.

Added

• Equipment (5): chelsea-colour-filter, sg-measurement, conoscope, advanced-lab-instruments, diamond-screening; spectroscope.yaml gains 27-spectra reference table.
• Fundamentals (3): colour-theory (CFT, charge transfer, colour centres), twin-laws, optic-sign-determination; expansions to crystal-systems and physical-properties.
• Phenomena (7): schiller, silk-effect, fluorescence, fire-dispersion, orient, tenebrescence, alexandrite-effect.
• Treatments-deep: Be diffusion, lead-glass ruby, HPHT diamond, CVD diamond.
• Origin (28 files, 11 regions): Thailand, Cambodia, Vietnam, Pakistan, Afghanistan, Tajikistan, India, Iran, Russia, USA, Mozambique, Zimbabwe, Ethiopia, Colombia mines, Brazil additional.

Pipeline

research-synthesist (10 agents, 4 waves) → citation-verifier (218 claims reviewed) → builders (file-locked scopes). Source priority: Gem-A → peer-reviewed → Webster/Read 7th ed. → Mindat.

Validation

Astro npm run build: 791 pages (was 697; +94). All YAMLs pass closed Zod schema.