Add the Northline template family: Purple Pop and Citrus Split

Purple Pop (cream page, purple pills, asterisk and dome decor, opt-in
logo) and Citrus Split (grey split panel, halftone chevrons, icon
contacts, logo in the measured slot) are rebuilt from the Canva PDFs on
the engine with A4/Letter support, GST slots and zero audit errors. Adds
static DM Sans, Jost and Poppins 800 as look-alikes for the commercial
fonts. The picker now lists ten templates.

src/pdf/templates/registry.ts

@@ -5,6 +5,8 @@ import { crimsonGrid } from "./ledger/crimson";
 import { tangerineLedger } from "./ledger/tangerine";
 import { slateBand } from "./band/slate";
 import { tealSwoosh } from "./band/teal";
+import { citrusSplit } from "./northline/citrus";
+import { purplePop } from "./northline/purple";
 import { monogram } from "./neutral/monogram";
 import { serenity } from "./neutral/serenity";
 
@@ -18,6 +20,8 @@ export const TEMPLATES: Record<string, TemplateDefinition> = {
   "tangerine-ledger": tangerineLedger,
   "slate-band": slateBand,
   "teal-swoosh": tealSwoosh,
+  "purple-pop": purplePop,
+  "citrus-split": citrusSplit,
 };
 
 export const DEFAULT_TEMPLATE_ID = "classic";