chore: bump version to v0.2.3

Worker safety release - prevents accidental termination of active agents.

Key changes:
- Kill authority removed from Deacon patrol (death warrants only)
- Bulletproof pause mechanism for Deacon
- Doctor warns instead of killing sessions
- New gt account switch command
- Hidden directory scanning fixes

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

internal/cmd/version.go

@@ -11,7 +11,7 @@ import (
 
 // Version information - set at build time via ldflags
 var (
-	Version = "0.2.2"
+	Version = "0.2.3"
 	// Build can be set via ldflags at compile time
 	Build = "dev"
 	// Commit and Branch - the git revision the binary was built from (optional ldflag)