feat(projects): main projects section with mockup cards

[vreshch]

What

• Adds a "Main projects" section at the top of /projects: the two flagship cards (Agentage, MCP Directory) with browser mockups, rendered from the shared FEATURED_PROJECTS module (same source as the homepage - no duplication)

Verify

• npm run verify green (23/23), prettier clean; rendered page shows both mockup cards above the catalog

[github-actions]

🎉 PR Validation ✅ PASSED

Commit: 5eba4622911c27bbedcf48adaf65eb179330e872
Branch: feature/projects-featured

Checks:

• ✅ Dependencies installed
• ✅ Linting passed
• ✅ Format check passed
• ✅ Build successful
• ✅ Docker build
• ✅ E2E tests

Visual Changes: 8 of 8 screenshots changed

📸 contacts desktop — 100% changed

📸 contacts mobile — 100% changed

📸 home desktop — 100% changed

📸 home mobile — 100% changed

📸 interests desktop — 100% changed

📸 interests mobile — 100% changed

📸 projects desktop — 100% changed

📸 projects mobile — 100% changed

Ready to merge! ✨

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⏰ Generated at: 2026-07-10T16:22:01.354Z