fix(eoi): v1 field placement uses percent coords, not absolute points

Documenso 2.x's v1-compat POST /documents/{id}/fields expects percent
coordinates (0-100), same as v2 — but placeFields multiplied by a hardcoded
A4 page size, so 39.6% became ~237 and was read as 237%, placing the EOI
signature fields far off-page. Send percent straight through (matches
template-native fields, which render correctly). Drop the now-dead
getPageDimensions/DEFAULT_PAGE_DIMENSIONS A4 fallback.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

src/lib/services/documenso-client.ts

@@ -1291,8 +1291,6 @@ export interface DocumensoPageDimensions {
   height: number;
 }
 
-const DEFAULT_PAGE_DIMENSIONS: DocumensoPageDimensions = { width: 595, height: 842 }; // A4 pt
-
 const pageDimensionCache = new Map<string, DocumensoPageDimensions>();
 
 /** Test seam - clears the page-dimension memoization. */
@@ -1300,18 +1298,6 @@ export function __resetDocumensoCachesForTests(): void {
   pageDimensionCache.clear();
 }
 
-async function getPageDimensions(docId: string, portId?: string): Promise<DocumensoPageDimensions> {
-  const cached = pageDimensionCache.get(docId);
-  if (cached) return cached;
-  // v1 doesn't expose page dimensions cleanly via the public API; the auto-
-  // placement use case is footer-anchored signature fields, where a default A4
-  // page rendered by Documenso is a safe assumption. Real page dims can be
-  // wired in a follow-up by parsing the document/document-data endpoints.
-  void portId;
-  pageDimensionCache.set(docId, DEFAULT_PAGE_DIMENSIONS);
-  return DEFAULT_PAGE_DIMENSIONS;
-}
-
 /**
  * Place one or more fields on a Documenso document. Coordinates are PERCENT
  * (0-100) and converted to pixels for v1 internally.
@@ -1374,16 +1360,19 @@ export async function placeFields(
     return;
   }
 
-  const dims = await getPageDimensions(docId, portId);
   for (const f of fields) {
     const body = {
       recipientId: typeof f.recipientId === 'string' ? Number(f.recipientId) : f.recipientId,
       type: f.type,
       pageNumber: f.pageNumber,
-      pageX: Math.round((f.pageX / 100) * dims.width),
-      pageY: Math.round((f.pageY / 100) * dims.height),
-      pageWidth: Math.round((f.pageWidth / 100) * dims.width),
-      pageHeight: Math.round((f.pageHeight / 100) * dims.height),
+      // Documenso 2.x's v1-compat /fields endpoint expects PERCENT coords
+      // (0-100), the same as v2 — NOT absolute points. (Confirmed live:
+      // absolute values like 237 were read as 237% and placed fields far
+      // off-page.) Send the percent values straight through.
+      pageX: f.pageX,
+      pageY: f.pageY,
+      pageWidth: f.pageWidth,
+      pageHeight: f.pageHeight,
       // Pass fieldMeta through on v1 too (Documenso 2.x's v1-compat endpoint
       // accepts it) so TEXT fields like "Place of Signing" keep their label /
       // required / placeholder. Older v1 servers ignore unknown keys.