chore: Bump version to 0.28.0

Updated all component versions:
- bd CLI: 0.27.2 → 0.28.0
- Plugin: 0.27.2 → 0.28.0
- MCP server: 0.27.2 → 0.28.0
- npm package: 0.27.2 → 0.28.0
- Documentation: 0.27.2 → 0.28.0

Generated by scripts/bump-version.sh

cmd/bd/templates/hooks/post-checkout

@@ -1,5 +1,5 @@
 #!/bin/sh
-# bd-hooks-version: 0.27.2
+# bd-hooks-version: 0.28.0
 #
 # bd (beads) post-checkout hook
 #

cmd/bd/templates/hooks/post-merge

@@ -1,5 +1,5 @@
 #!/bin/sh
-# bd-hooks-version: 0.27.2
+# bd-hooks-version: 0.28.0
 #
 # bd (beads) post-merge hook
 #

cmd/bd/templates/hooks/pre-commit

@@ -1,5 +1,5 @@
 #!/bin/sh
-# bd-hooks-version: 0.27.2
+# bd-hooks-version: 0.28.0
 #
 # bd (beads) pre-commit hook
 #

cmd/bd/templates/hooks/pre-push

@@ -1,5 +1,5 @@
 #!/bin/sh
-# bd-hooks-version: 0.27.2
+# bd-hooks-version: 0.28.0
 #
 # bd (beads) pre-push hook
 #

cmd/bd/version.go

@@ -14,7 +14,7 @@ import (
 
 var (
 	// Version is the current version of bd (overridden by ldflags at build time)
-	Version = "0.27.2"
+	Version = "0.28.0"
 	// Build can be set via ldflags at compile time
 	Build = "dev"
 	// Commit and branch the git revision the binary was built from (optional ldflag)