Reviving Praderas (Day 23) — covers through Phase 3, JSON without HTML

Today we ran the agreed dual track: keep Tier A retrofit rhythm (~two ES/EN pairs per day) and start Phase 6 with a stable JSON surface for agents and tooling.

Wall clock (order of magnitude)

Retrofit Days 4 and 5 (Comfy + WebP + --translation-key): ~1 h (two SDXL runs + audit).
Phase 6 slice 1 (70-BlogJson.php + docs): ~45 min agent time.
This ES/EN log: same session.

Block A — Tier A retrofit: Days 4 and 5

`Translation_Key`	WebP	Seed	~KiB
`praderas-day-4-phase-3-metadata-taxonomy-frontmatter-lint`	`day04-comfyui-sdxl-phase3-metadata-taxonomy-frontmatter-hero.webp`	`04052026`	~112
`praderas-day-5-visual-polish`	`day05-comfyui-sdxl-visual-polish-readability-hero.webp`	`05052026`	~55

Visual metaphors: Day 4 — ordered tags and document silhouettes (taxonomy / lint); Day 5 — typographic rhythm and airy cards (visual polish without new frameworks).

Reproduction command (Day 4)

python3 scripts/comfyui/export_cover.py \
  --output assets/images/day04-comfyui-sdxl-phase3-metadata-taxonomy-frontmatter-hero.png \
  --positive "Wide cinematic editorial illustration for a Spanish tech blog named Praderas, soft golden meadow light, abstract organized tag chips and gentle taxonomy tree shapes suggesting metadata consistency and front matter lint, subtle checklist and document silhouettes without readable text, calm grid of soft data cards, grass-green and warm neutral tones, professional quiet atmosphere, no logos, no watermarks, high detail, tasteful color grading" \
  --seed 04052026 \
  --prefix praderas_day04_export \
  --webp --webp-delete-png \
  --translation-key praderas-day-4-phase-3-metadata-taxonomy-frontmatter-lint

Reproduction command (Day 5)

python3 scripts/comfyui/export_cover.py \
  --output assets/images/day05-comfyui-sdxl-visual-polish-readability-hero.png \
  --positive "Wide cinematic editorial illustration for a Spanish tech blog named Praderas, soft dawn meadow light, abstract typography rhythm and generous vertical whitespace suggesting calm long-form reading, subtle design token swatches and refined card elevations without readable text, gentle grass-green accent on warm neutrals, professional quiet atmosphere, no logos, no watermarks, high detail, tasteful color grading" \
  --seed 05052026 \
  --prefix praderas_day05_export \
  --webp --webp-delete-png \
  --translation-key praderas-day-5-visual-polish

Tick .agents/retrofit-cover-queue.md rows 4–5 → done. Next Tier A target: Days 6–7.

Block B — Phase 6: JSON v1 (listings + article)

New plugin plugins/70-BlogJson.php and contract .agents/blog-json-api.md.

Endpoint	Content
`GET /blog.json`	Spanish post listing (`blog/`, excluding `blog/en/`)
`GET /blog/en.json`	English post listing
`GET /blog/{slug}.json`	ES article + markdown body
`GET /blog/en/{slug}.json`	EN article + markdown body

Each item exposes translation_key, alternate_url when paired, canonical Spanish tags (same as YAML), estimated reading_time_minutes, and Cache-Control: public, max-age=3600.

Not in this slice: search.json, tag filters, static pre-generation, JSON URLs in the sitemap.

Quick test (local stack)

curl -sS 'http://localhost:8080/blog.json' | head
curl -sS 'http://localhost:8080/blog/reviviendo-praderas-dia-4-fase-3-metadatos-taxonomy-y-lint-de-front-matter.json' | jq '.post.title'

Next focus

Tier A — queue rows 6–16 (~two pairs per day).
Phase 6 v1.1 — search.json or pre-generation if a specific integrator needs it.
This log’s hero — day23-comfyui-sdxl-tier-a-json-phase6-hero.webp (seed 23052026).