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>

make-pdf/src/print-css.ts

@@ -5,8 +5,11 @@
  * Mirror those CSS rules here. The HTML references were approved via
  * /plan-design-review with explicit design decisions locked in the plan:
  *
- *   - Helvetica only (system font, no bundled webfonts — dodges the
- *     per-glyph Tj bug that breaks copy-paste extraction).
+ *   - Helvetica first, with Liberation Sans as a metric-compatible Linux
+ *     fallback (Helvetica and Arial aren't installed on most Linux distros;
+ *     Liberation Sans ships via the fonts-liberation package and Playwright's
+ *     install-deps). No bundled webfonts — dodges the per-glyph Tj bug that
+ *     breaks copy-paste extraction.
  *   - All paragraphs flush-left. No first-line indent, no justify, no
  *     p+p indent. text-align: left everywhere. 12pt margin-bottom.
  *   - Cover page has the same 1in margins as every other page. No flexbox
@@ -15,8 +18,8 @@
  *   - `@page :first` suppresses running header/footer but does NOT override
  *     the 1in margin.
  *   - No <link>, no external CSS/fonts — everything inlined.
- *   - CJK fallback: Helvetica, Arial, Hiragino Kaku Gothic ProN, Noto Sans
- *     CJK JP, Microsoft YaHei, sans-serif.
+ *   - CJK fallback: Helvetica, Liberation Sans, Arial, Hiragino Kaku Gothic
+ *     ProN, Noto Sans CJK JP, Microsoft YaHei, sans-serif.
  */
 
 export interface PrintCssOptions {
@@ -37,6 +40,11 @@ export interface PrintCssOptions {
 
   // Margins (default 1in)
   margins?: string;
+
+  // Whether to render "N of M" page numbers in the @page @bottom-center rule.
+  // Default true. Set false to suppress CSS numbering (used when the caller
+  // supplies a custom Chromium footerTemplate, or when --no-page-numbers).
+  pageNumbers?: boolean;
 }
 
 /**
@@ -69,17 +77,20 @@ export function printCss(opts: PrintCssOptions = {}): string {
 function pageRules(size: string, margin: string, opts: PrintCssOptions): string {
   const runningHeader = escapeCssString(opts.runningHeader ?? "");
   const showConfidential = opts.confidential !== false;
+  const showPageNumbers = opts.pageNumbers !== false;
 
   return [
     `@page {`,
     `  size: ${size};`,
     `  margin: ${margin};`,
     runningHeader
-      ? `  @top-center { content: "${runningHeader}"; font-family: Helvetica, Arial, sans-serif; font-size: 9pt; color: #666; }`
+      ? `  @top-center { content: "${runningHeader}"; font-family: Helvetica, "Liberation Sans", Arial, sans-serif; font-size: 9pt; color: #666; }`
+      : ``,
+    showPageNumbers
+      ? `  @bottom-center { content: counter(page) " of " counter(pages); font-family: Helvetica, "Liberation Sans", Arial, sans-serif; font-size: 9pt; color: #666; }`
       : ``,
-    `  @bottom-center { content: counter(page) " of " counter(pages); font-family: Helvetica, Arial, sans-serif; font-size: 9pt; color: #666; }`,
     showConfidential
-      ? `  @bottom-right { content: "CONFIDENTIAL"; font-family: Helvetica, Arial, sans-serif; font-size: 8pt; color: #aaa; letter-spacing: 0.05em; }`
+      ? `  @bottom-right { content: "CONFIDENTIAL"; font-family: Helvetica, "Liberation Sans", Arial, sans-serif; font-size: 8pt; color: #aaa; letter-spacing: 0.05em; }`
       : ``,
     `}`,
     ``,
@@ -96,7 +107,7 @@ function rootTypography(): string {
   return [
     `html { lang: en; }`,
     `body {`,
-    `  font-family: Helvetica, Arial, "Hiragino Kaku Gothic ProN", "Noto Sans CJK JP", "Microsoft YaHei", sans-serif;`,
+    `  font-family: Helvetica, "Liberation Sans", Arial, "Hiragino Kaku Gothic ProN", "Noto Sans CJK JP", "Microsoft YaHei", sans-serif;`,
     `  font-size: 11pt;`,
     `  line-height: 1.5;`,
     `  color: #111;`,