Refactor Pages around the verified pipeline

[xtraid]

Summary

• refactor GitHub Pages into the frozen pipeline narrative while preserving all 27 legacy technical permalinks
• add the authored home, pipeline, worked-example, component, reference, evidence, and dossier-index routes
• publish the validated wang-narrative-assets-v1 bundle through small Jekyll layouts/includes with one owner, semantic label, fallback, contact sheet, alt text, and caption per animation
• extend source and generated-site checkers to enforce taxonomy, component sections, exact asset topology/ownership/kind, accessibility metadata, link targets, and frozen owner/evidence cross-links
• retain the independent technical references and apply the narrow-viewport inline-code correction found by the browser audit

Architecture boundaries

• prose, navigation, and sitemap remain authored Markdown/Jekyll; Pages does not read run.json or generate prose from a dossier
• the Pages build does not invoke solving, rendering, dossier generation, PDF/LaTeX, or network access
• pipeline_sat.cm13 remains the sole SAT narrative instance; unsat-search stays separately named and hash-bound
• core models, algorithms, ABI, ownership, and the v1 dossier contracts are unchanged
• T98 PDF-v2 implementation and unproved cross-phase/PDF checklist gates remain out of scope and open

Verification

Final HEAD: 3d3e7d3d620517c3380712c3f796f70f433651e9

• independent whole-branch review plus scoped re-review: no remaining Critical or Important findings
• make check: 17 C tests, 185 Python tests, benchmark smokes, and the four-engine UNSAT comparison passed
• focused Pages checker suite: 21 tests passed, including RED/GREEN coverage for missing, duplicate, wrong-owner, wrong-kind assets and primary-section binding
• make pages-check: 40 routes (13 story, 15 reference, 11 evidence, 1 history), 9 animations, and 8 static narrative assets
• pinned ghcr.io/actions/jekyll-build-pages:v1.0.13 build: read-only repository mount, uid/gid 1000, empty token, and --network none
• generated-site checker: 40 HTML pages and 799 href/src/srcset references validated
• offline Chromium audit: 11 narrative routes at desktop and 390 px widths, keyboard/focus/accessibility/reduced-motion checks, and zero horizontal overflow
• strict GCC/Clang, sanitizer, analyzer, Valgrind, Cachegrind, parser fuzz (2,000 runs), coverage, dossier-v1 smoke, and 290 renderer tests were already green in the recorded T97 verification matrix before the final docs/checker-only review fix

Remaining exclusions

• no T98 dossier-v2 formatter/template or PDF gate is included
• cross-phase v2 identities, mixed Pages/PDF delivery, UNSAT cross-phase behavior, and deletion-independence items remain unchecked until their owning task proves them