diff --git a/.beads/issues.jsonl b/.beads/issues.jsonl
index fe4e633..614fdfe 100644
--- a/.beads/issues.jsonl
+++ b/.beads/issues.jsonl
@@ -123,6 +123,6 @@
 {"id":"ifcurl-vam","title":"Phase 6: Bonsai offer ifc:// URL when saving linked model reference","description":"When saving an IFCDOCUMENTREFERENCE in Bonsai, offer the option to write the location as an ifc:// URL rather than a relative path. When a relative path would traverse above the repository root, prompt the user to convert it to an ifc:// URL. Requires Phase 4 federation (ifcurl-bqt).","status":"deferred","priority":4,"issue_type":"feature","owner":"bruno@postle.net","created_at":"2026-04-23T05:49:16Z","created_by":"Bruno Postle","updated_at":"2026-04-23T06:15:13Z","defer_until":"2026-12-01T00:00:00Z","dependencies":[{"issue_id":"ifcurl-vam","depends_on_id":"ifcurl-bqt","type":"blocks","created_at":"2026-04-23T06:49:23Z","created_by":"Bruno Postle","metadata":"{}"}],"dependency_count":1,"dependent_count":0,"comment_count":0}
 {"id":"ifcurl-9k2","title":"Phase 5: IFC Viewer integration (equivalent of Phase 4)","description":"Add ifc:// OS protocol handler and 'Copy view URL' button to the IFC Viewer desktop application, equivalent to the Bonsai Phase 4 integration. Depends on Phase 4 being complete as a reference implementation.","status":"deferred","priority":4,"issue_type":"feature","owner":"bruno@postle.net","created_at":"2026-04-23T05:49:08Z","created_by":"Bruno Postle","updated_at":"2026-04-23T06:15:12Z","defer_until":"2026-12-01T00:00:00Z","dependencies":[{"issue_id":"ifcurl-9k2","depends_on_id":"ifcurl-0oj","type":"blocks","created_at":"2026-04-23T06:49:14Z","created_by":"Bruno Postle","metadata":"{}"}],"dependency_count":1,"dependent_count":0,"comment_count":0}
 {"id":"ifcurl-prc","title":"Phase 3c: 3D diff view for IFC PR merges","description":"After a PR merge completes, surface a 'View merge in 3D' button using the Phase 3b viewer. Use @thatopen/components highlighter to colour added, removed, and modified elements differently, driven by comparing the merged IFC against either parent. Requires Phase 3b viewer (ifcurl-i1s) to be working.","status":"closed","priority":4,"issue_type":"feature","owner":"bruno@postle.net","created_at":"2026-04-23T05:48:30Z","created_by":"Bruno Postle","updated_at":"2026-04-26T17:15:07Z","closed_at":"2026-04-26T17:15:07Z","close_reason":"Rendered diff already implemented in footer.tmpl Case 3; static PNG via /render_diff endpoint, not interactive 3D","dependencies":[{"issue_id":"ifcurl-prc","depends_on_id":"ifcurl-i1s","type":"blocks","created_at":"2026-04-23T06:48:36Z","created_by":"Bruno Postle","metadata":"{}"}],"dependency_count":1,"dependent_count":0,"comment_count":0}
-{"_type":"memory","key":"ifcurl-service-names-are-ifcurl-api-service-and","value":"ifcurl service names are ifcurl-api.service and ifcurl-render.service (not ifcurl.service). Install path for Python package: /opt/ifcurl/lib/python3.14/site-packages/ifcurl/. Python binary: /opt/ifcurl/bin/python3."}
 {"_type":"memory","key":"forgejo-build-and-deploy-procedure-go-build-c","value":"Forgejo build and deploy procedure: go build -C /home/bruno/src/forgejo -tags 'sqlite sqlite_unlock_notify' -ldflags \"-X 'forgejo.org/modules/setting.StaticRootPath=/usr/share/forgejo'\" -o /home/bruno/src/forgejo/forgejo . — then sudo cp forgejo /usr/bin/forgejo. StaticRootPath=/usr/share/forgejo. CustomPath=/var/lib/forgejo/custom. Custom templates go to /var/lib/forgejo/custom/templates/custom/ (e.g. footer.tmpl → /var/lib/forgejo/custom/templates/custom/footer.tmpl). Custom static files go to /var/lib/forgejo/custom/public/assets/ (NOT /etc/forgejo/public/assets/) and are served at /assets/*."}
+{"_type":"memory","key":"ifcurl-service-names-are-ifcurl-api-service-and","value":"ifcurl service names are ifcurl-api.service and ifcurl-render.service (not ifcurl.service). Install path for Python package: /opt/ifcurl/lib/python3.14/site-packages/ifcurl/. Python binary: /opt/ifcurl/bin/python3."}
 {"_type":"memory","key":"torawurl-in-viewer-url-js-must-support-github","value":"toRawUrl in viewer-url.js must support GitHub, GitLab, Forgejo/Gitea (codeberg.org, self-hosted), and localhost. Tests in forgejo/tests/viewer-url.test.js cover all four. The localhost check (http vs https) is based on host.startsWith('localhost'), so subdomain.localhost gets https."}
diff --git a/forgejo/custom/public/assets/ifcurl.js b/forgejo/custom/public/assets/ifcurl.js
index 4385600..6383721 100644
--- a/forgejo/custom/public/assets/ifcurl.js
+++ b/forgejo/custom/public/assets/ifcurl.js
@@ -29,14 +29,16 @@ function makeViewerLink(info, label, cls) {
 function linkifyBareIfcUrls() {
   const IFC_URL = /ifc:\/\/[^\s<>"']+/g;
   const TRAILING = /[.,;:!?)]+$/;
-  const walker = document.createTreeWalker(document.body, NodeFilter.SHOW_TEXT);
   const nodes = [];
-  let n;
-  while ((n = walker.nextNode())) {
-    if (n.parentElement.closest('a, code, pre, .ifcurl-preview, [contenteditable]')) continue;
-    if (IFC_URL.test(n.textContent)) nodes.push(n);
-    IFC_URL.lastIndex = 0;
-  }
+  document.querySelectorAll('.markup').forEach(function(root) {
+    const walker = document.createTreeWalker(root, NodeFilter.SHOW_TEXT);
+    let n;
+    while ((n = walker.nextNode())) {
+      if (n.parentElement.closest('a, code, pre, .ifcurl-preview')) continue;
+      if (IFC_URL.test(n.textContent)) nodes.push(n);
+      IFC_URL.lastIndex = 0;
+    }
+  });
   nodes.forEach(function(textNode) {
     const text = textNode.textContent;
     const parts = text.split(IFC_URL);
@@ -65,8 +67,8 @@ function linkifyBareIfcUrls() {
 // and bare ifc:// URLs promoted by linkifyBareIfcUrls().
 function replaceIfcAnchors() {
   const origin = window.location.origin;
-  document.querySelectorAll('a[href^="ifc://"]').forEach(function(a) {
-    if (a.closest(".ifcurl-preview, [contenteditable]")) return;
+  document.querySelectorAll('.markup a[href^="ifc://"]').forEach(function(a) {
+    if (a.closest(".ifcurl-preview")) return;
     const ifcUrl = a.getAttribute("href");
     const img = document.createElement("img");
     img.src = origin + "/preview?url=" + encodeURIComponent(ifcUrl);