perf: pre-generate Bible verse data and reduce DOM via conditional rendering

- Extract Bible lookup logic into shared src/lib/server/bible.ts module
- Add build script to pre-generate all 20 mystery verse lookups as static data,
  eliminating runtime API calls on rosary page load
- Update Prayer.svelte to pass showLatin/urlLang as snippet parameters; all 14
  prayer components now conditionally render only visible language elements
  instead of hiding via CSS
- Extract 4 inline mystery selector SVGs into MysteryIcon.svelte component
- Remove unused CSS selectors from angelus page

package.json

@@ -5,6 +5,7 @@
 	"type": "module",
 	"scripts": {
 		"dev": "vite dev",
+		"prebuild": "npx vite-node scripts/generate-mystery-verses.ts",
 		"build": "vite build",
 		"preview": "vite preview",
 		"check": "svelte-kit sync && svelte-check --tsconfig ./tsconfig.json",