fix: add missing Paraglide compiled message files for new themes + aria-label

CI svelte-check failed because Paraglide generates per-key .js files that
must be committed — the compiler runs at build time in CI (svelte-kit sync)
but the output directory is tracked in git, so new keys added to messages/*.json
require the corresponding generated files to be committed manually when node
is not available locally.

Added:
- messages/profile_theme_forest.js
- messages/profile_theme_mono.js
- messages/profile_theme_cyber.js
- messages/_index.js: three new export lines

Also fixed a11y warn: added aria-label='Close history' to the icon-only
close button in the discover page history drawer.

ui/src/routes/discover/+page.svelte

@@ -458,6 +458,7 @@
 			<button
 				type="button"
 				onclick={() => (showHistory = false)}
+				aria-label="Close history"
 				class="w-8 h-8 flex items-center justify-center rounded-lg text-(--color-muted) hover:text-(--color-text) hover:bg-(--color-surface-3) transition-colors"
 			>
 				<svg class="w-4 h-4" fill="none" stroke="currentColor" viewBox="0 0 24 24">