diff --git a/plans/artdag-on-sx.md b/plans/artdag-on-sx.md
index 669c4124..0544c241 100644
--- a/plans/artdag-on-sx.md
+++ b/plans/artdag-on-sx.md
@@ -352,4 +352,12 @@ be an op token.
 
 ## Blockers
 
-(none)
+- **Push to `origin/loops/artdag` unavailable in this environment** (since 2026-06-19).
+  `git push` fails `could not read Username for 'https://git.rose-ash.com'` —
+  `~/.git-credentials` is empty; fetch/`ls-remote` work (anonymous read) but push needs
+  auth. Commits accumulate locally (HEAD ahead of `origin/loops/artdag`); push when
+  credentials are restored. Environment issue, not a code blocker.
+- **sx-tree edit tools raise yojson `"Expected string, got null"` in this worktree**
+  (`sx_insert_near`/`sx_replace_*`/`sx_insert_child`). Only `sx_write_file` works for
+  writes; assemble the full file and `sx_write_file` (or `cp` a prepared file +
+  `sx_validate`). Same gotcha logged in the content/dream loops.