Add the Marble and Highlighter templates, completing the 13 reference templates

Marble uses a flat-to-gradient band in place of the marble photo and bundles Lustria (OFL).
Both logo slots are opt-in. Quirk 13 documents a fontkit glyph-cache issue that the
tests work around with warm-up renders; the engine fix follows separately.

src/pdf/templates/monolith/monolith.test.tsx

@@ -49,7 +49,7 @@ describe("registry, catalog and fonts", () => {
     expect(monolith.family).toBe("standalone");
     expect(catalogEntry("monolith").name).toBe("Monolith");
     expect(existsSync(path.join(process.cwd(), "public", monolith.thumbnail)), monolith.thumbnail).toBe(true);
-    expect(Object.keys(TEMPLATES).slice(-2)).toEqual(["monolith", "cobalt-stripe"]);
+    expect(Object.keys(TEMPLATES).slice(-4, -2)).toEqual(["monolith", "cobalt-stripe"]);
     expect(TEMPLATE_CATALOG.map((e) => e.id)).toEqual(Object.keys(TEMPLATES));
   });