Release v0.40.0

New commands and features:
- bd worktree for parallel development
- bd slot commands for agent bead slot management
- bd agent state for ZFC-compliant state reporting
- bd doctor --deep for full graph integrity validation
- Agent bead support (type=agent, type=role, migration 030)
- Computed .parent field in JSON output
- Auto-bypass daemon for wisp operations
- Pour warning for vapor-phase formulas

Performance:
- O(2^n) → O(V+E) cycle detection (GH#775)

Fixes:
- Import hash mismatch warnings
- Test updates for version tracking thresholds
- Migration test updated for new agent schema fields

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

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

cmd/bd/version.go

@@ -14,7 +14,7 @@ import (
 
 var (
 	// Version is the current version of bd (overridden by ldflags at build time)
-	Version = "0.39.1"
+	Version = "0.40.0"
 	// Build can be set via ldflags at compile time
 	Build = "dev"
 	// Commit and branch the git revision the binary was built from (optional ldflag)