perf: wave A — cache headers, three.js chunk, client directive downgrades#44
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…ades - public/_headers: add immutable /fonts/* cache rule + stale-while-revalidate on /minerals.db - astro.config.mjs: isolate three / @react-three/fiber / @react-three/drei into their own chunk - src/pages/index.astro: HeroCrystal3D client:load → client:idle - src/pages/tools/*.astro (7 routes): React islands client:load → client:visible - src/pages/quiz/index.astro: QuizPage client:load → client:idle Part of audits/perf-2026-05/ remediation. WA1 (font preload) intentionally deferred to Wave D / WD1 so it lands together with the @fontsource @import migration to stable /fonts/* paths. The two SectionHeader client:load instances on the home page (src/pages/index.astro:154, 239) are intentionally left for Wave B / WB3 which swaps them for the existing src/components/ui-astro/SectionHeader.astro variant.
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Summary
public/_headers: adds an immutable one-year cache rule for/fonts/*assets andstale-while-revalidate=86400on/minerals.dbso repeat visits serve the database from the edge cache without revalidation delay.astro.config.mjs: movesthree,@react-three/fiber, and@react-three/dreiinto their own Rollup manual chunk (three), keeping the heavy 3-D renderer out of the main application bundle.src/pages/index.astro: downgradesHeroCrystal3Dfromclient:loadtoclient:idle— the 3-D hero is non-blocking content and should not compete with critical rendering.src/pages/tools/*.astro(7 routes): downgrades React islands on all six tool category pages plus the tools hub fromclient:loadtoclient:visible— widgets that live below the fold do not need to hydrate until they scroll into view.src/pages/quiz/index.astro: downgradesQuizPagefromclient:loadtoclient:idle— the quiz UI is interactive but not paint-critical.Deferred items
@fontsource@importmigration to stable/fonts/*paths.SectionHeaderclient:loadinstances on the home page (src/pages/index.astrolines 154, 239) are intentionally left for Wave B / WB3, which swaps them for the existingsrc/components/ui-astro/SectionHeader.astrostatic variant.Reference
Audit folder:
audits/perf-2026-05/