feat: add PWA support (manifest, service worker, icons)

Adds vite-plugin-pwa with a generated manifest, icon set derived from
the Stalwart mark (192/512/maskable/apple-touch), and theme-color meta
tags. /api and /jmap are excluded from the service worker's navigate
fallback and are never precached or runtime-cached, so authenticated
mail data can't end up in Cache Storage.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
This commit is contained in:
Steven RYDELL
2026-07-30 16:06:59 +02:00
co-authored by Claude Sonnet 5
parent 25a38cd560
commit da2c99990f
9 changed files with 625 additions and 1 deletions
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