Add issue No. 02 "Obsession" + reusable image pipeline

Content
- 100 new plates under content/posts/02/ — one recurring red-haired model
  across 10 editorial registers (Haute Couture, Film Noir, Boudoir,
  Avant-Garde, Minimalism, Baroque, Street Style, Surrealism, Monochrome,
  Nocturne), generated with flux-1.1-pro, face-swapped to a consistent
  identity (FaceFusion), and upscaled (Upscayl + Remacri, 3328x4992).
- content/issues/02/_index.md; issue 01 -> status archived; hugo.toml params
  (issueIds newest-first, issueNumber/Name/Season/Blurb).

Structure
- Plate bundles grouped by issue: content/posts/<issue>/<slug>/, with
  build.render:never stubs so /posts/<issue>/ isn't emitted. nginx 301s the
  legacy flat /posts/<slug>/ URLs to /posts/01/<slug>/. The /posts/ archive
  uses .RegularPagesRecursive.

Image pipeline (scripts/, data/ gitignored)
- generate-images.py  — Replicate flux-1.1-pro, 960x1440, idempotent.
- faceswap-images.py  — FaceFusion batch-run, one consistent face.
- upscale-images.py   — Upscayl + remacri-4x, long edge clamped to 4992.
- build-issue.py      — prompts JSON -> content/posts/<issue>/*/index.md.

Build
- CSS now compiled by Hugo's css.TailwindCSS (partials/css.html +
  templates.Defer); dropped the standalone Tailwind CLI step, concurrently,
  and the gitignored static/css/main.css. Requires Hugo >= 0.161; Dockerfile
  collapsed to a single hugomods/hugo:debian-node build stage.
  pnpm-workspace.yaml: preferSymlinkedExecutables + allowBuilds.

Front end
- Pagination 8 per page.
- Lightbox: brand mark and category link out; robust SPA back/forward
  (fetch before startViewTransition, single-flight guard, swallow the
  transition abort rejection, popstate re-renders / reopens the viewer).

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01DZPmxGywFnAhmYJB1eh9fm

hugo.toml

@@ -1,10 +1,10 @@
 baseURL = "https://roux.pivoine.art/"
-languageCode = "en"
+locale = "en"
 title = "Roux"
 enableRobotsTXT = true
 enableGitInfo = false
 [pagination]
-pagerSize = 10
+pagerSize = 8
 
 [taxonomies]
 category = "categories"
@@ -21,11 +21,11 @@ term     = ["HTML"]
 [params]
 description = "Roux is a slow-publishing fashion journal — one hundred photographs at a time. Editorial, couture, beauty and backstage plates."
 author      = "Roux Editorial"
-issueIds    = ["01"]
-issueNumber = "01"
-issueName   = "Devotion"
-issueSeason = "Spring MMXXVI"
-issueBlurb  = "One hundred plates devoted to a single presence — photographed across worlds, light, and time."
+issueIds    = ["02", "01"]
+issueNumber = "02"
+issueName   = "Obsession"
+issueSeason = "Autumn MMXXVI"
+issueBlurb  = "One hundred plates in thrall to a single body — a bared shoulder, a parted mouth, silk slipping loose."
 siteURL     = "https://roux.pivoine.art"
 umamiSrc    = "https://umami.pivoine.art/script.js"
 umamiId     = "df675ca7-f82a-463b-89aa-f67c1f56ed68"
@@ -34,7 +34,26 @@ umamiId     = "df675ca7-f82a-463b-89aa-f67c1f56ed68"
 unsafe = true
 
 [build]
-writeStats = true
+  [build.buildStats]
+    enable = true
+  [[build.cachebusters]]
+    source = 'assets/notwatching/hugo_stats\.json'
+    target = 'css'
+  [[build.cachebusters]]
+    source = 'assets/css/main\.css'
+    target = 'css'
+
+[module]
+  [[module.mounts]]
+    source = 'assets'
+    target = 'assets'
+  [[module.mounts]]
+    source = 'hugo_stats.json'
+    target = 'assets/notwatching/hugo_stats.json'
+    disableWatch = true
+
+[security.exec]
+  allow = ['^(dart-)?sass$', '^go$', '^git$', '^node$', '^npx$', '^postcss$', '^tailwindcss$']
 
 [imaging]
 quality        = 85