v1.1.0 — Hardened build, deduplicated design system

Maintenance release from a full repo audit. No rendered page changed — all 71 pages verified byte-identical to v1.0.0 output; this release hardens the pipeline and cleans up internals and docs.

Build & tooling

• The two-pass TOC build now verifies its core invariant: chapter positions are re-extracted from the pass-2 PDF and the build fails if any shifted. Ambiguous chapter markers (a standalone "CHAPTER NN" line on more than one page) fail the build; stray markers warn; toc-positions.json is written only after validation.
• Sync fails loudly on empty chrome folders and on two manifest chapters sharing a directory; malformed toc-positions.json warns instead of being silently ignored.
• Fonts register via Document.tsx, so any entry point that renders the book gets them; export-pages.sh works from any directory.

Design system

• TipBox/WarningBox/InfoBox collapsed to one base + style factory; semantic colors are palette references (no re-typed hexes); new fontScale.chromeLabel token ends chrome borrowing code typography.
• Consistent wrap API across Table/BulletList/CodeBlock; IconList gains a feature variant (now used on the Ch10 adapter page); markdown parser and icon adapter warn on unsupported input instead of failing silently.

Docs & starter templates

• Fixed stale claims (output/ gitignore status, sync description, troubleshooting example), documented all new build guards and component APIs, and resolved the starter-pack fontWeight contradictions.

Full details in the commit history: 5f63b5e…dce045b.