feat: Armarium full customization and 4-language i18n (v0.8.0)

Replaces Astro Rocket demo content with Armarium branding and adds
complete DE/FR/IT/EN translations across all pages.

Branding & content (v0.7.0):
- Add horizontal SVG logo to navbar with currentColor dark mode support
- Rewrite homepage with Armarium hero, 6 feature cards, trust bar,
  Zürich coat of arms SVG, and CTA; shared HomePage.astro component
- Add privacy page (/datenschutz) with 6 Infomaniak certification cards
  and 8-section policy (ISO 27001:2022, Swiss Hosting, nDSG/GDPR, etc.)
- Add legal notice page (/impressum)
- Rewrite about, contact, 404 pages with Armarium content
- Add features page (/projects) from projects content collection
- Add language switcher dropdown (LanguageSwitcherDropdown.astro)
- Add single launch blog post; remove all demo blog/project content
- Set up i18n foundation: astro.config.mjs, ui.ts, utils.ts

Full i18n (v0.8.0):
- Add all pages in FR/IT/EN: about, contact, blog, features, privacy,
  legal notice — 28 locale variants total
- Language switcher visible in every layout (PageLayout, BlogLayout,
  ProjectLayout, LandingLayout) with translated nav items
- Locale-aware nav and footer hrefs via nav.*.href keys in ui.ts
- Shared page components (AboutPage, ContactPage, FeaturesIndexPage,
  BlogIndexPage) accept locale prop; locale pages are 4-line wrappers
- Extend content.config.ts locale enum with de and it

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

CHANGELOG.md

@@ -6,6 +6,62 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ---
 
+## [0.8.0] — 2026-04-13
+
+### Added — Full i18n translation
+
+- **All pages available in 4 languages** (DE/FR/IT/EN): About, Contact, Blog, Features, Privacy, Legal Notice — 28 locale variants total
+- **Language switcher in every navbar** — `PageLayout`, `BlogLayout`, `ProjectLayout` and `LandingLayout` render the language switcher with the correct `currentLocale`
+- **Locale-aware nav and footer links** — new `nav.*.href` and `footer.privacy.href` / `footer.imprint.href` keys in `ui.ts`
+- **Shared page components** — `AboutPage`, `ContactPage`, `FeaturesIndexPage`, `BlogIndexPage` accept a `locale` prop; each locale page file is a 4-line wrapper with no code duplication
+- **Translated privacy pages** — full translated privacy policy on FR (`/fr/privacy`), IT (`/it/privacy`), EN (`/en/privacy`) including Infomaniak certification cards
+- **Translated legal notice pages** — Mentions légales (FR), Note legali (IT), Legal Notice (EN)
+- **`ui.ts`** — ~40 new translation keys per language: `about.*`, `contact.*`, `blog.*`, `features.cta.*`, `nav.*.href`, `footer.*.href`
+
+### Changed (2026-04-13)
+
+- `PageLayout` accepts `locale` prop and passes translated nav items to the header
+- `BlogLayout` / `ProjectLayout` show language switcher with translated nav and breadcrumbs
+- `LandingLayout` footer links (privacy, legal notice, features) are locale-aware
+- Blog index shows all posts across locales (locale filter removed)
+- Blog post `armarium-1-0.mdx` locale corrected from `en` to `de`
+- `content.config.ts` locale enum extended with `de` and `it`
+
+---
+
+## [0.7.0] — 2026-04-13 — Armarium customization
+
+### Added
+
+- **Armarium branding** — horizontal SVG logo in navbar (`logo-horizontal.svg`), `fill="currentColor"` for dark mode support
+- **Homepage** (`/`, `/fr/`, `/it/`, `/en/`) — hero ("Armarium Suite — Budget & More"), 6 feature cards, trust bar with Zürich coat of arms, CTA; shared `HomePage.astro` component
+- **Swiss identity** — Zürich coat of arms (SVG, #003DA5/white) in trust bar, about page and privacy page
+- **Privacy page** (`/datenschutz`) — 6 Infomaniak certification cards (ISO 27001:2022, Swiss Hosting Label, Swiss Made Software, nDSG/GDPR, ISO 14001 + B Corp™, physical security) + 8-section privacy policy
+- **Legal notice** (`/impressum`) — operator: Armarium, Zürich; hosting: Infomaniak
+- **About page** — mission section, app info cards, 4 value cards (transparency, simplicity, privacy, made in Zürich)
+- **Features page** (`/projects`) — 6 feature cards from `projects` collection with icon mapping
+- **Blog** — single launch post "Armarium Suite 1.0 ist da"
+- **Language switcher** (`LanguageSwitcherDropdown.astro`) — locale code (DE/FR/IT/EN) without flag emojis; desktop + mobile
+- **i18n foundation** — `astro.config.mjs` with `prefixDefaultLocale: false`; `ui.ts` for DE/FR/IT/EN (hero, trust bar, features, CTA, footer)
+
+### Changed
+
+- Header: Login + Register buttons instead of GitHub / "Get Started"
+- Navbar: "Projects" → "Features"
+- Footer: columns layout with app and legal link groups, Armarium tagline and copyright
+- `contact.astro`, `about.astro`, `404.astro` — updated with Armarium content
+- `authors/team.json` — name set to "Armarium"
+
+### Fixed
+
+- Unescaped apostrophe in French translation (`d\'épargne`) causing esbuild parse error
+- Flag emojis removed from language switcher (no font support on Linux)
+- Duplicate `Locale` type import in `LandingLayout.astro`
+- Footer copyright HTML rendering (PR #28)
+- Stripped `www.` prefix from contact social link display values (PR #27)
+
+---
+
 ## [1.0.0] — 2026-04-04
 
 Initial public release of Astro Rocket.