fix(docs): use production sandbox font paths (#171)

## Why

Production research PDF generation failed after successful report
synthesis because the renderer looked for Liberation fonts in
`/usr/share/fonts/truetype/liberation2`, while the Daytona production
image provides them under `/usr/share/fonts/truetype/liberation`.

## What changed

- Point the Markdown-to-PDF renderer at the Liberation Sans and
Liberation Mono paths present in the production sandbox.
- Keep the report pipeline unchanged: the canonical Markdown shown in
chat is still the exact input rendered to PDF.

## Verification

- `pnpm lint`
- `pnpm typecheck`
- `pnpm turbo build --force`
- `pnpm deadcode`
- `pnpm architecture:check`
- `pnpm turbo skills:build`
- Reproduced the original `ENOENT` against the live Daytona sandbox.
- Ran the corrected renderer in that sandbox with headings, links, a
four-column table, a task list, a blockquote, and sources; it exited
successfully and emitted a valid PDF artifact.

No database migration, environment variable, vendor, or
deployment-topology changes.

Author: iamjr15

packages/agent-core/src/tools/docs/scripts.ts

@@ -154,14 +154,14 @@ const MARKDOWN_PDF_SETUP = [
   "let nextKey = 0;",
   "const key = (prefix) => prefix + '-' + nextKey++;",
   "Font.register({ family: 'Liberation Sans', fonts: [",
-  "  { src: '/usr/share/fonts/truetype/liberation2/LiberationSans-Regular.ttf' },",
-  "  { src: '/usr/share/fonts/truetype/liberation2/LiberationSans-Bold.ttf', fontWeight: 700 },",
-  "  { src: '/usr/share/fonts/truetype/liberation2/LiberationSans-Italic.ttf', fontStyle: 'italic' },",
-  "  { src: '/usr/share/fonts/truetype/liberation2/LiberationSans-BoldItalic.ttf', fontStyle: 'italic', fontWeight: 700 },",
+  "  { src: '/usr/share/fonts/truetype/liberation/LiberationSans-Regular.ttf' },",
+  "  { src: '/usr/share/fonts/truetype/liberation/LiberationSans-Bold.ttf', fontWeight: 700 },",
+  "  { src: '/usr/share/fonts/truetype/liberation/LiberationSans-Italic.ttf', fontStyle: 'italic' },",
+  "  { src: '/usr/share/fonts/truetype/liberation/LiberationSans-BoldItalic.ttf', fontStyle: 'italic', fontWeight: 700 },",
   "] });",
   "Font.register({ family: 'Liberation Mono', fonts: [",
-  "  { src: '/usr/share/fonts/truetype/liberation2/LiberationMono-Regular.ttf' },",
-  "  { src: '/usr/share/fonts/truetype/liberation2/LiberationMono-Bold.ttf', fontWeight: 700 },",
+  "  { src: '/usr/share/fonts/truetype/liberation/LiberationMono-Regular.ttf' },",
+  "  { src: '/usr/share/fonts/truetype/liberation/LiberationMono-Bold.ttf', fontWeight: 700 },",
   "] });",
 ].join("\n");