feat: adapt pullfrog for gitea + ollama

utils/buildShockbotFooter.ts

@@ -0,0 +1,17 @@
+const FOOTER_MARKER = "<!-- shockbot-footer -->";
+
+export function buildShockbotFooter(params?: {
+  model?: string | undefined;
+}): string {
+  const modelPart = params?.model ? ` · \`${params.model}\`` : "";
+  return `\n\n<br>\n\n---\n${FOOTER_MARKER}\n*Reviewed by [shockbot](https://git.shockvpn.com)${modelPart}*`;
+}
+
+export function stripExistingFooter(body: string): string {
+  const markerIdx = body.lastIndexOf(FOOTER_MARKER);
+  if (markerIdx === -1) return body;
+  // walk back past "\n\n---\n" before the marker
+  const beforeMarker = body.slice(0, markerIdx);
+  const stripped = beforeMarker.replace(/\s*\n+---\n$/, "").trimEnd();
+  return stripped;
+}