Add Ledger and Band template families with decor primitives

Crimson Grid, Tangerine Ledger, Slate Band and Teal Swoosh are rebuilt from
the Canva PDFs with grid and band tables that survive page breaks,
full-bleed fixed bands, pennant tabs, gradient corner swooshes with
keep-outs, Carbon icon circles, and the user's logo in the measured slot
(knockout or white chip on the dark Slate band). Adds static Poppins
500-700 and Inter fonts. Thumbnails regenerated for all eight templates;
the item-count sweeps run in their own test file.

scripts/decor/icons.mjs

@@ -0,0 +1,34 @@
+// Extracts the SVG path data of a few Carbon icons into src/pdf/decor/icons.generated.ts, so the PDF code
+// carries plain path strings and never imports React icon components (src/pdf stays free of the DOM).
+// Run: npm run decor:icons
+import { readFileSync, writeFileSync } from "node:fs";
+import path from "node:path";
+import { fileURLToPath } from "node:url";
+
+const ROOT = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "../..");
+const ICONS = { phone: "Phone", email: "Email", location: "Location" };
+
+const out = {};
+for (const [key, name] of Object.entries(ICONS)) {
+  const src = readFileSync(path.join(ROOT, "node_modules/@carbon/icons-react/es", `${name}.js`), "utf8");
+  const viewBox = /viewBox: "([^"]+)"/.exec(src)?.[1];
+  const paths = [...src.matchAll(/jsx\("path", \{ d: "([^"]+)" \}\)/g)].map((m) => m[1]);
+  if (!viewBox || paths.length === 0 || /jsx\("(circle|rect|polygon)"/.test(src)) throw new Error(`${name}: unexpected icon structure`);
+  out[key] = { viewBox, paths };
+}
+
+const body = `// Generated by \`npm run decor:icons\` (scripts/decor/icons.mjs). Do not edit by hand.
+// Path data of IBM Carbon icons, Apache-2.0 (see ICONS-NOTICE.md).
+
+export interface IconArt {
+  /** "minX minY width height", as in the Carbon source. */
+  viewBox: string;
+  paths: string[];
+}
+
+export const ICONS = ${JSON.stringify(out, null, 2)} as const satisfies Record<string, IconArt>;
+
+export type IconName = keyof typeof ICONS;
+`;
+writeFileSync(path.join(ROOT, "src/pdf/decor/icons.generated.ts"), body);
+console.log(`icons.generated.ts: ${Object.keys(out).join(", ")}`);