chore: archive completed OpenSpec change homepage-recent-posts

- Moved homepage-recent-posts to archive with 2025-10-31 date
- Created new spec at specs/homepage-recent-posts/
- All validation checks pass

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

openspec/specs/homepage-recent-posts/spec.md

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+# homepage-recent-posts Specification
+
+## Purpose
+TBD - created by archiving change homepage-recent-posts. Update Purpose after archive.
+## Requirements
+### Requirement: Display Recent Blog Posts on Homepage
+The homepage MUST display the 3 most recent blog posts immediately after the user's description content section.
+
+#### Scenario: Three most recent posts are displayed
+**Given** the blog section contains 5 published posts
+**When** a visitor accesses the homepage
+**Then** exactly 3 most recent posts are displayed
+**And** posts are ordered by publication date (newest first)
+
+#### Scenario: Fewer than three posts exist
+**Given** the blog section contains only 2 published posts
+**When** a visitor accesses the homepage
+**Then** all 2 posts are displayed
+**And** no error or empty slots are shown
+
+#### Scenario: No blog posts exist
+**Given** the blog section contains no published posts
+**When** a visitor accesses the homepage
+**Then** the recent posts section is not displayed
+**And** the homepage layout remains intact
+
+### Requirement: Post Display Format
+Each displayed blog post MUST show the post title as a clickable link and the publication date.
+
+#### Scenario: Post title is clickable
+**Given** a blog post is displayed on the homepage
+**When** a visitor clicks the post title
+**Then** they are navigated to the full blog post page
+**And** the language context is preserved (German homepage → German post, English homepage → English post)
+
+#### Scenario: Publication date is formatted correctly
+**Given** a blog post with date "2025-10-30" is displayed
+**When** viewing the German homepage
+**Then** the date is formatted as "30. October 2025"
+**When** viewing the English homepage
+**Then** the date is formatted as "October 30, 2025"
+
+### Requirement: Multilingual Support
+The recent posts section MUST respect the site's multilingual configuration and display language-appropriate content.
+
+#### Scenario: German homepage shows German posts
+**Given** the visitor accesses the German homepage (/de/)
+**When** the recent posts section is rendered
+**Then** only German blog posts are displayed
+**And** the section heading is in German (e.g., "Neueste Beiträge")
+
+#### Scenario: English homepage shows English posts
+**Given** the visitor accesses the English homepage (/en/)
+**When** the recent posts section is rendered
+**Then** only English blog posts are displayed
+**And** the section heading is in English (e.g., "Recent Posts")
+
+### Requirement: Visual Design and Layout
+The recent posts section MUST maintain consistency with the existing site design and remain responsive.
+
+#### Scenario: Section styling matches site design
+**Given** the recent posts section is displayed
+**Then** it uses Bootstrap classes consistent with the rest of the site
+**And** spacing and typography match existing content sections
+**And** the section is visually distinct from the description section above
+
+#### Scenario: Responsive layout on mobile devices
+**Given** the homepage is viewed on a mobile device (< 768px width)
+**When** the recent posts section is displayed
+**Then** the layout remains readable and properly formatted
+**And** no horizontal scrolling is required
+**And** links are easily tappable
+
+### Requirement: Performance and Build
+The implementation MUST not negatively impact Hugo build performance or site load times.
+
+#### Scenario: Hugo build completes successfully
+**Given** the homepage template includes recent posts query
+**When** running `hugo build`
+**Then** the build completes without errors or warnings
+**And** the homepage HTML is generated correctly for both languages
+
+#### Scenario: Site performance remains optimal
+**Given** the homepage includes recent posts section
+**When** measuring page load performance
+**Then** Lighthouse performance score remains >90
+**And** no additional HTTP requests are made
+**And** HTML file size increase is minimal (< 2KB)
+