chore: bump version to 0.33.0

Ephemeral molecules release:
- bd mol spawn creates ephemeral issues by default
- Ephemeral issues never export to JSONL
- bd mol squash with --summary for agent summaries

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

cmd/bd/templates/hooks/pre-push

@@ -1,6 +1,6 @@
 #!/bin/sh
 # bd-shim v1
-# bd-hooks-version: 0.32.1
+# bd-hooks-version: 0.33.0
 #
 # bd (beads) pre-push hook - thin shim
 #