chore(deps): update all dependencies, Astro 6 → 7

Astro 6.4.6 → 7.2.0, @astrojs/sitemap 3.7.2 → 3.7.3, tailwindcss and
@tailwindcss/vite 4.2.4 → 4.3.3, vitest 4.1.5 → 4.1.10. `npm audit` goes
from 7 vulnerabilities to 0 — three of them high-severity Astro XSS
advisories that only the v7 bump fixes, plus transitive sharp/svgo/undici
resolved by a non-breaking `npm audit fix`.

Most of Astro 7's breaking changes don't apply here: no markdown or content
collections (the remark → Sätteri switch), no src/fetch.ts, no @astrojs/db,
no transitions API. Two did:

compressHTML now defaults to 'jsx', which strips whitespace and line breaks
around elements. That closed up the gap at every element boundary rendered
across separate lines ("Pricing About" → "PricingAbout"), and since .es-tip
is display:inline-block the same rule can visibly corrupt prose. Pin the
pre-v7 lossless mode to keep output identical; switching to the v7 default
later means auditing the markup for cross-line inline elements first.

Vite 8's minifier emits backtick string literals where esbuild emitted
double quotes, which broke the Escape-key test. The handler was intact — the
assertion was pinned to minifier quote style rather than call structure,
contradicting its own comment. Both assertions are now quote-agnostic (the
second would have failed too, masked by the first aborting).

Verified against a pre-upgrade snapshot of dist/: rendered text, markup
structure, file set, and sitemap (including git-mtime lastmod) are all
identical. 228/228 tests pass from a clean npm ci.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

Author: mrtnzlml

CLAUDE.md

@@ -17,7 +17,7 @@ Requires Node.js >=22.12.0. Deployed to Cloudflare Workers Builds: push to `main
 
 ## Architecture
 
-**Static site built with Astro 6 + Tailwind CSS 4.** Zero client-side JavaScript by default — games use inline `<script>` blocks with vanilla JS, no framework hydration. The homepage additionally ships three tiny progressive-enhancement scripts (seasonal papel-picado swap, daily word-of-the-day, EsTip width measurement); with JS disabled it renders the year-round banner, the fallback word, and Spanish-sized swap boxes.
+**Static site built with Astro 7 + Tailwind CSS 4.** Zero client-side JavaScript by default — games use inline `<script>` blocks with vanilla JS, no framework hydration. The homepage additionally ships three tiny progressive-enhancement scripts (seasonal papel-picado swap, daily word-of-the-day, EsTip width measurement); with JS disabled it renders the year-round banner, the fallback word, and Spanish-sized swap boxes.
 
 ### Key directories
 

astro.config.mjs

@@ -73,6 +73,14 @@ function sharedMtime() {
 export default defineConfig({
   site: "https://elenkaspanish.com",
 
+  // Astro 7 switched the default to 'jsx', which strips whitespace and line
+  // breaks around elements — that silently closes up the gaps between inline
+  // elements written across separate lines (nav links, footer links, the
+  // inline-block <EsTip> spans). `true` is the pre-v7 lossless mode, which
+  // preserves whitespace where it affects visual rendering. Keep it until the
+  // markup is audited for JSX whitespace rules.
+  compressHTML: true,
+
   vite: {
     plugins: [tailwindcss()],
   },