Refresh movement pages and mannequin startup

[a-baran-orhan]

What changed

• restyle the generated movement library, all movement detail pages, language spec, and LLM guide to match the new editorial landing-page system
• regenerate all committed static content pages from the shared shell
• add a renderer option that hides the procedural figure while the skinned mannequin loads
• enable that no-flash startup behavior in the playground and landing hero
• retain the procedural figure as a fallback when the mannequin asset genuinely fails

Why

The static movement pages still used the previous rounded-card and gradient-heavy visual system. The playground also briefly displayed the classic procedural model before the default mannequin GLB finished loading.

Impact

The public content pages now feel consistent with the landing page across desktop and mobile. Normal viewer startup no longer flashes the old model, while offline and failed-load behavior remains resilient.

Validation

• npm run build
• npm run typecheck
• npm test — 214 tests passed
• git diff --check
• responsive inspection at 1440px desktop and 390px mobile

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Project	Deployment	Actions	Updated (UTC)
posecode	Ready	Preview, Comment	Jul 11, 2026 1:48pm