fix(rig): Use correct beads path during rig/crew creation (GHI #7)

initAgentBeads and crew_add were looking for beads at mayor/rig/.beads/
but during initial creation, beads is at rig root. The redirect
mechanism to mayor/rig/.beads/ gets set up later.

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

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

internal/cmd/crew_add.go

@@ -56,9 +56,8 @@ func runCrewAdd(cmd *cobra.Command, args []string) error {
 	crewGit := git.NewGit(r.Path)
 	crewMgr := crew.NewManager(r, crewGit)
 
-	// Beads for agent bead creation
-	rigBeadsPath := filepath.Join(r.Path, "mayor", "rig")
-	bd := beads.New(rigBeadsPath)
+	// Beads for agent bead creation (use rig root where .beads/ lives)
+	bd := beads.New(r.Path)
 
 	// Track results
 	var created []string