Replace the footers; the repo is public now

Eleven files carried "Private VANITY development material — not for sale or
distribution", which contradicted the repo the moment it went public.

Two replacements, because the files do two different jobs. core/render.mjs
*emits* its footer into every generated delve, so that one now says where the
document came from rather than restricting what can be done with it — a
generated dungeon belongs to whoever generated it. The project's own documents
— DESIGN.md, the paper delve, both playtests, the spike report — read as
development notes in a public repo.

Samples regenerated so they carry the new line. The worksheet and play sheet
never had a footer and still do not; they are the GM's own working documents.

Module to 0.1.1: the v0.1.0 zip vendors the old render.mjs and would stamp the
stale footer on everything it generated. Cutting a version rather than swapping
assets under the existing one.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

foundry-module/module.json

@@ -2,7 +2,7 @@
   "id": "vanity-delve",
   "title": "DELVE — a dungeon layer for VANITY",
   "description": "Generates a coherent delve and sequences VANITY's Forge to stage it, one area at a time.",
-  "version": "0.1.0",
+  "version": "0.1.1",
   "compatibility": {
     "minimum": "13",
     "verified": "14.365"

foundry-module/module/core/render.mjs

@@ -165,6 +165,6 @@ export function renderMarkdown(d) {
   }
   L.push('---');
   L.push('');
-  L.push('*Private VANITY development material — not for sale or distribution.*');
+  L.push('*Generated by [DELVE](https://github.com/slaguru666/vanity-delve) for the VANITY RPG.*');
   return L.join('\n');
 }