week-6: complete 404 and repository pages implementation

Deliverables:
- Implemented language-specific 404 pages (404.en.html, 404.it.html)
  * Hugo i18n template pattern for automatic language routing
  * Full translation support for all UI strings
  * Easter egg modal with interactive experience
  * Theme-aware styling (dark/light mode)
  * Search functionality and recent articles

- Built Repository page with full Slackware package showcase
  * Hero section, quick start guide, installation instructions
  * Responsive card grid layout for packages
  * GitHub repository links with visit buttons
  * Complete i18n translations for all content
  * Theme-aware styling throughout

- Integrated Repository menu entry
  * Added to main navigation in both languages
  * Positioned between Contact and Privacy (weight: 4)
  * Added missing i18n translation keys

Testing:
- Verified 404 routing works correctly in Hugo dev server
- Validated all translations display without warnings
- Confirmed theme switching works on both pages
- Tested mobile and desktop layouts
- Menu entries render correctly in all views

Cleanup:
- Removed outdated Week 1-5 documentation
- Archived progress reports in git history
- Retained essential technical documentation

Status: Ready for Week 7 implementation

Co-Authored-By: Claude Haiku 4.5 <noreply@anthropic.com>

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diff --git a/WEEK3-COMPLETION.md b/WEEK3-COMPLETION.md
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-# Week 3 Completion Report: Cards & Navigation
-**Date:** 2026-04-16 | **Status:** ✅ MERGED TO MASTER | **Total Commits:** 12
-
----
-
-## 🎯 Objectives Achieved
-
-### ✅ Article Card Component
-- **Component:** `.card` with semantic structure (image, title, excerpt, badge, button)
-- **Features:**
-  - Responsive image handling with proper aspect ratios
-  - Lazy loading support via `loading="lazy"`
-  - Hover effects: lift animation, glow effect, shadow expansion
-  - Dark/light mode support with CSS variables
-  - WCAG AA accessible (proper semantic HTML, alt text)
-  - Tested at all breakpoints (320px, 768px, 1060px+)
-
-### ✅ Navigation Header
-- **Component:** Header with logo, language switcher, theme toggle
-- **Features:**
-  - Logo respects current language context (IT → `/it/`, EN → `//`)
-  - Language switcher dropdown with smooth transitions
-  - Theme toggle (dark ↔ light) with instant visual feedback
-  - Responsive design (hamburger on mobile, full nav on desktop)
-  - Keyboard accessible (Tab, Enter, Escape)
-  - Alpine.js powered for interactivity
-
-### ✅ Hamburger Menu (Mobile)
-- **Component:** Full-screen overlay menu with slide-in animation
-- **Features:**
-  - Alpine.js event dispatcher for menu state management
-  - Prevents menu flicker on navigation
-  - X-cloak directive prevents visual flashing on page load
-  - Mobile-first design (visible only < 768px)
-  - Smooth animations (GPU-accelerated)
-  - Keyboard accessible (Escape to close)
-
-### ✅ Breadcrumb Navigation
-- **Component:** Hierarchical navigation showing content path
-- **Features:**
-  - Multilingual support (IT uses `/it/` subdir, EN uses `/`)
-  - Semantic HTML5 `<nav>` and `<ol>` elements
-  - Language-aware links maintain context when clicked
-  - Proper styling and hover states
-  - Renders correctly on all article pages
-  - Fixed Hugo layout lookup issue (was using `_default/single.html`, now properly targets `articles/single.html`)
-
-### ✅ Responsive Design Verified
-- ✅ Mobile (320px): Hamburger menu active, single-column layout
-- ✅ Tablet (768px): Transition zone, navigation adjusts
-- ✅ Desktop (1060px+): Full header nav visible, hamburger hidden
-- ✅ All interactions tested on multiple screen sizes
-
-### ✅ Dark/Light Mode Support
-- ✅ All navigation elements styled for both themes
-- ✅ Contrast verified (WCAG AA baseline maintained)
-- ✅ Instant theme switch with no layout shift
-- ✅ Proper color variables used (no hard-coded colors)
-
----
-
-## 📊 Implementation Metrics
-
-| Metric | Value | Status |
-|--------|-------|--------|
-| **CSS Build Time** | 189ms | ✅ Optimal |
-| **Components Built** | 4 | ✅ Complete |
-| **Templates Updated** | 6 | ✅ Integrated |
-| **Accessibility Level** | WCAG AA | ✅ Verified |
-| **Responsive Breakpoints** | 3+ | ✅ Tested |
-| **Dark Mode Support** | Yes | ✅ Full |
-| **Mobile Menu Working** | Yes | ✅ Tested |
-| **Breadcrumb Rendering** | Yes | ✅ Fixed |
-
----
-
-## 🔧 Files Modified
-
-### CSS
-- `themes/danix-xyz-hacker/assets/css/main.css`
-  - Card component styles
-  - Navigation header styles
-  - Hamburger menu animations
-  - Breadcrumb styling
-  - Hover effects and transitions
-
-### Layouts & Templates
-- `layouts/articles/single.html` — Added breadcrumb partial
-- `layouts/index.html` — Enhanced with card components
-- `layouts/partials/article-list-item.html` — Card integration
-- `layouts/partials/header.html` — Logo, nav, language switcher
-- `layouts/partials/hamburger-menu.html` — Mobile overlay menu
-- `layouts/partials/breadcrumb.html` — Navigation hierarchy
-
-### Configuration
-- `hugo.toml` — Menu definitions (articles, pages)
-- `i18n/en.yaml` & `i18n/it.yaml` — Translated UI strings
-
----
-
-## 📝 Key Bug Fixes
-
-### Breadcrumb Rendering Issue (RESOLVED)
-**Problem:** Breadcrumb partial existed but produced zero HTML output.
-**Root Cause:** Hugo layout lookup was using `layouts/_default/single.html` instead of `layouts/articles/single.html`.
-**Solution:** Added breadcrumb partial call to the actual layout file being used.
-
-### Logo Link Regression (RESOLVED)
-**Problem:** Header logo link was hardcoded to `/`, breaking Italian navigation.
-**Root Cause:** Language context not respected in header template.
-**Solution:** Updated logo link to use `.Params.Lang` → `/it/` for Italian, `/` for English.
-
----
-
-## ✅ Quality Assurance
-
-### Testing Completed
-- ✅ Dark mode rendering (all components)
-- ✅ Light mode rendering (all components)
-- ✅ Mobile layout (320px viewport)
-- ✅ Tablet layout (768px viewport)
-- ✅ Desktop layout (1060px+ viewport)
-- ✅ Keyboard navigation (Tab, Enter, Escape)
-- ✅ Focus indicators (visible on all interactive elements)
-- ✅ Icon rendering (Feather Icons CDN)
-- ✅ Cross-browser compatibility (Chrome, Firefox, Safari)
-- ✅ Theme toggle functionality
-- ✅ Language switcher functionality
-- ✅ Hamburger menu animation
-- ✅ Breadcrumb link accuracy
-
-### Accessibility Audit
-- ✅ Semantic HTML (proper element usage)
-- ✅ ARIA labels (menu buttons, nav regions)
-- ✅ Color contrast (WCAG AA verified)
-- ✅ Keyboard accessibility (Tab, Enter, Escape)
-- ✅ Focus management (visible indicators)
-- ✅ Mobile touch targets (44px minimum)
-
----
-
-## 📚 Documentation Created
-
-1. **WEEK3-COMPLETION.md** — This file (comprehensive audit)
-2. **WEEK3-COMPONENTS.md** — Detailed component specifications
-3. **WEEK3-TESTING.md** — Testing checklist and results
-4. **HANDOFF.md** — Updated with Week 3 summary
-
----
-
-## 🚀 Git History (Week 3 Commits)
-
-```
-ab54b0a fix: logo link now respects current language
-e4de55e chore: update HANDOFF and settings after breadcrumb fix
-9108c98 feat: make breadcrumb navigation multilingual with proper links
-e265bc2 fix: breadcrumb navigation now renders in article pages
-eacc38e chore: update Italian translations
-ec4b801 fix: add x-cloak to prevent menu flash on page load
-13df7e2 fix: prevent menu flicker when navigating to new page
-8028603 fix: rewrite hamburger menu using Alpine.js event dispatcher
-a614ed8 fix: hamburger menu click handler and horizontal scroll issues
-f77e36d feat: refactor homepage buttons to use btn component classes
-4eb02ff fix: simplify breadcrumb component (WIP - rendering issue to investigate)
-3e686b2 feat: add breadcrumb navigation component
-15471cd feat: add header nav and hamburger menu styling with JS handlers
-5b4ba19 feat: add card component with hover lift and glow effects
-```
-
----
-
-## ✨ What's Ready Now (Week 3 + Previous)
-
-### Components
-- ✅ 5 button variants (primary, secondary, outline, icon, disabled)
-- ✅ 5 article type badges (tech, life, quote, link, photo)
-- ✅ Article card component (image, title, excerpt, badge, button)
-- ✅ Navigation header (logo, links, theme toggle)
-- ✅ Hamburger menu (mobile-only, slide-in overlay)
-- ✅ Breadcrumb navigation (hierarchical, multilingual)
-
-### Features
-- ✅ Dark/light mode toggle (instant, persistent)
-- ✅ Language switcher (IT ↔ EN, respects all links)
-- ✅ Mobile responsiveness (320px, 768px, 1060px+)
-- ✅ Keyboard navigation (Tab, Enter, Escape)
-- ✅ Icon support (Feather Icons CDN)
-- ✅ CSS animations (GPU-accelerated)
-- ✅ WCAG AA accessibility
-
----
-
-## 🎯 Blockers & Risks
-
-✅ **None** — All Week 3 objectives completed, merged to master, no regressions detected.
-
----
-
-## 📈 Progress Summary
-
-| Week | Focus | Status | Commits |
-|------|-------|--------|---------|
-| 1 | Foundation (CSS audit) | ✅ Complete | 8 |
-| 2 | Buttons & Badges | ✅ Complete | 6 |
-| 3 | Cards & Navigation | ✅ Complete | 12 |
-| 4 | Forms & Interactions | ⏳ Ready | — |
-| 5 | Animations & A11y | ⏳ Planned | — |
-| 6 | Pages & Testing | ⏳ Planned | — |
-
-**Total Progress:** 50% (3/6 weeks complete)
-
----
-
-## 🔄 Ready for Week 4
-
-All Week 3 work has been merged to `master`. No feature branches are active.
-
-**Next Step:** Create `week-4-forms` branch and begin Week 4 implementation.
-
-See `WEEK4-PLAN.md` for Week 4 objectives and technical roadmap.