chore(release): v0.47.2

- Dolt backend (experimental)
- bd show --children flag
- NixOS support improvements
- Fix redirect + sync-branch incompatibility
- Fix doctor project-level settings detection
- Fix contributor routing

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

cmd/bd/templates/hooks/post-merge

@@ -1,6 +1,6 @@
 #!/usr/bin/env sh
 # bd-shim v1
-# bd-hooks-version: 0.47.1
+# bd-hooks-version: 0.47.2
 #
 # bd (beads) post-merge hook - thin shim
 #