chore: bump version to 0.33.1

Breaking changes:
- Ephemeral → Wisp rename (JSON field, CLI flag)

Fixes:
- Lint error in mail.go (nosec for mail delegate)

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

cmd/bd/templates/hooks/post-checkout

@@ -1,6 +1,6 @@
 #!/bin/sh
 # bd-shim v1
-# bd-hooks-version: 0.33.0
+# bd-hooks-version: 0.33.1
 #
 # bd (beads) post-checkout hook - thin shim
 #

cmd/bd/templates/hooks/post-merge

@@ -1,6 +1,6 @@
 #!/bin/sh
 # bd-shim v1
-# bd-hooks-version: 0.33.0
+# bd-hooks-version: 0.33.1
 #
 # bd (beads) post-merge hook - thin shim
 #

cmd/bd/templates/hooks/pre-commit

@@ -1,6 +1,6 @@
 #!/bin/sh
 # bd-shim v1
-# bd-hooks-version: 0.33.0
+# bd-hooks-version: 0.33.1
 #
 # bd (beads) pre-commit hook - thin shim
 #

cmd/bd/templates/hooks/pre-push

@@ -1,6 +1,6 @@
 #!/bin/sh
 # bd-shim v1
-# bd-hooks-version: 0.33.0
+# bd-hooks-version: 0.33.1
 #
 # bd (beads) pre-push hook - thin shim
 #