fix(v1.4.1.0): /make-pdf — page numbers, entity escape, Linux fonts (#1098)

* fix(make-pdf): single-source page numbers via CSS, honor --no-page-numbers end-to-end

Two page-number sources were stacking in every PDF: Chromium's native footer
and our @page @bottom-center CSS. The CLI flag --page-numbers/--no-page-numbers
also never reached the CSS layer, because RenderOptions didn't carry it.
Passing --footer-template likewise dropped the "custom footer replaces stock
footer" semantic.

- orchestrator.ts: browseClient.pdf() gets pageNumbers:false unconditionally.
  CSS is the single source of truth. Chromium native numbering always off.
- render.ts: RenderOptions gains pageNumbers + footerTemplate. render() computes
  showPageNumbers = pageNumbers !== false && !footerTemplate and passes to
  printCss(), preserving the prior footerTemplate-suppresses-stock semantic.
- print-css.ts: PrintCssOptions.pageNumbers wraps @bottom-center in a conditional
  matching the existing showConfidential pattern.
- types.ts: PreviewOptions.pageNumbers so preview path compiles and matches CLI.
- render.test.ts: 7 regression tests covering printCss({pageNumbers}) in
  isolation AND the full render() data flow incl. footerTemplate path.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(make-pdf): decode HTML entities in titles and TOC to prevent double-escape

A markdown title like "# Herbert & Garry" rendered as "Herbert &amp;amp; Garry"
in <title>, cover block, and TOC entries. marked emits "&amp;" (correct HTML),
but extractFirstHeading and extractHeadings only stripTags — leaving the entity
intact. That string then flows through escapeHtml, producing the double-encode.

- render.ts: new decodeTextEntities helper, distinct from decodeTypographicEntities
  (which runs on in-pipeline HTML and intentionally preserves &amp;). Covers
  named entities (lt/gt/quot/apos/39/x27/amp) AND numeric (decimal + hex) so
  inputs like "&#169;" or "&#x2014;" don't create the same partial-fix bug.
  Amp-last ordering prevents double-decode on "&amp;lt;" et al.
- Apply in both extractFirstHeading and extractHeadings. extractHeadings feeds
  buildTocBlock → escapeHtml, so the TOC site had the same bug.
- render.test.ts: 8 tests covering the contract — parameterized across &, <, >,
  ©, — chars; single-escape in <title>/cover; TOC double-escape check; numeric
  entity decode; smartypants-interacts-with-quotes contract (no raw equality).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* fix(make-pdf): Liberation Sans font fallback for Linux rendering

On Linux (Docker, CI, servers), neither Helvetica nor Arial exist. Our CSS
stacks were falling through to DejaVu Sans — wider letterforms that look like
Verdana, not the intended Helvetica/Faber look. Liberation Sans is the standard
metric-compatible Arial clone (SIL OFL 1.1, apt package fonts-liberation).

- print-css.ts: all four font stacks (body + @top-center + @bottom-center +
  @bottom-right CONFIDENTIAL) gain "Liberation Sans" between Helvetica and
  Arial. File-header docblock updated to reflect the new stack.
- .github/docker/Dockerfile.ci: explicit apt-get install fonts-liberation +
  fontconfig with retry, fc-cache -f, and a verify step that fails the build
  loud if the font disappears. Playwright's install-deps happens to pull this
  in today but the dep is implicit and could silently regress.
- SKILL.md.tmpl: one-sentence note pointing Linux users at fonts-liberation.
- SKILL.md: regenerated via bun run gen:skill-docs --host all (only make-pdf's
  generated file changed — verified clean diff scope).
- render.test.ts: 2 assertions — Liberation Sans in body stack AND in at least
  one @page margin-box rule (proves all four intended stacks got touched, not
  just one).

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore: bump version and changelog (v1.4.1.0)

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

* chore: anonymize test fixtures, drop VC-partner framing

- CHANGELOG + render.test.ts fixtures use "Faber & Faber" instead of a
  personal name. Same regression coverage (ampersand in <title>, cover,
  TOC, body), neutral subject.
- make-pdf/SKILL.md.tmpl description drops the "send to a VC partner, a
  book agent, a judge, or Rick Rubin's team" line. "Not a draft artifact
  — a finished artifact" stands on its own without the audience posturing.
- SKILL.md regenerated.

No functional changes. All 58 make-pdf tests still pass.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

---------

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

.github/docker/Dockerfile.ci

@@ -72,6 +72,18 @@ RUN npm i -g @anthropic-ai/claude-code
 # Playwright system deps (Chromium) — needed for browse E2E tests
 RUN npx playwright install-deps chromium
 
+# Linux has neither Helvetica nor Arial. make-pdf's print CSS stacks fall back
+# to Liberation Sans (metric-compatible Arial clone, SIL OFL 1.1) so PDFs don't
+# render in DejaVu Sans. playwright install-deps happens to pull this in today,
+# but the dep is implicit and could change — install explicitly so upgrades
+# can't silently regress rendering.
+RUN for i in 1 2 3; do \
+      apt-get update && apt-get install -y --no-install-recommends fonts-liberation fontconfig && break || \
+      (echo "fonts-liberation install retry $i/3"; sleep 10); \
+    done \
+    && fc-cache -f \
+    && rm -rf /var/lib/apt/lists/*
+
 # Pre-install dependencies (cached layer — only rebuilds when package.json changes)
 COPY package.json /workspace/
 WORKDIR /workspace
@@ -84,7 +96,9 @@ RUN npx playwright install chromium \
 
 # Verify everything works
 RUN bun --version && node --version && claude --version && jq --version && gh --version \
-    && npx playwright --version
+    && npx playwright --version \
+    && fc-match "Liberation Sans" | grep -qi "Liberation" \
+        || (echo "ERROR: fonts-liberation not installed — make-pdf PDFs will render in DejaVu Sans" && exit 1)
 
 # At runtime: checkout overwrites /workspace, but node_modules persists
 # if we move it out of the way and symlink back