feat: add MemFlywheel & Domux projects, tech blogs, and landscape expansion

[dongjiang1989]

Summary

• New Projects: Add MemFlywheel (file-native memory flywheel for AI Agents, category memory-system) and Domux (low-latency smart-home command model based on Gemma-4-E2B-it, category llm) to /projects
  page, project detail pages, and stats cache
• Tech Blog Posts: Add 2 new blog posts under /category/tech — "MemFlywheel: File-native Memory Flywheel for AI Agents" and "Domux: Smart-home Command Model with <150ms Latency", with
  architecture/benchmark images from GitHub repos
• Landscape 4-Column Expansion: Expand landscape from 3 to 4 columns (30%+26%+22%+22%) — new Column 4 adds Memory System (MemFlywheel) and LLM (Domux) sections; ecosystem arrows proportionally repositioned
• Project Card External Links: ProjectCard and project detail pages support links field with HuggingFace/ModelScope brand SVG icons, positioned next to GitHub button
• Projects Page Mobile Optimization: Responsive filter bar sizing, simplified category labels on mobile, card footer vertical stacking (flex-col sm:flex-row), equal-height cards via h-full
• Image Compression: Compress blog images ~70% (2.9-3.3MB → 83-929KB) without resolution change; regenerate watermarked copies
• Cache Updates: Refresh .cache/project-stats.json (9 repos) and .cache/contributors.json (170 contributors from 60 repos)

Which issue(s) this PR fixes:

Fixes #

Special notes for reviewers:

• New categories memory-system and llm added across projects.astro, ProjectCard.astro, and [slug].astro
• Content schema extended with optional links: z.array(z.string()) field
• All checks pass: astro check (0 errors), eslint (clean), prettier (all formatted)

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Project	Deployment	Actions	Updated (UTC)
website	Ready	Preview, Comment	Jul 2, 2026 8:36am

[dongjiang1989]

cc @FenjuFu PTAL, thanks

[FenjuFu]

LGTM overall — nice addition. Merging; a few follow-ups to address in a subsequent PR:

1. landscape.astro: the rescaled arrow/label coordinates shifted all y values +80, but the overlay SVG is absolute top-0 over the card, so the old y values already included the 80px header — all four arrows/labels now render 80px below the boxes they connect (e.g. old Workflow→Automation endpoint y=495 sat exactly on the Automation box top edge). Also M 24 400 C -3 460, ... has control points at x=-3 which get clipped. Should be reverted to x-only rescaling.
2. The LLM column empty-state fallback span is empty (<span class="text-3xl opacity-40" />) — the memory-system one shows 🚧.
3. domux.yaml/memflywheel.yaml are missing the stars:/forks: seed values all other project yamls carry — on the SSR path a per-repo GitHub API failure makes only these two show 0 stars and sort to the bottom.
4. domux.yaml links only has HuggingFace; the ModelScope listing mentioned in the blog post could be added too.
5. The refreshed contributors cache now includes web-flow (GitHub's system merge account) and biqibao112212-bot on the contributors wall — the fetch script probably needs an exclusion list.