refactor: use hq- prefix for role bead references

Migrate all role bead references from gt-*-role to hq-*-role using
beads.RoleBeadIDTown() function. Role beads are stored in town beads
(~/gt/.beads/) with the hq- prefix.

Changes:
- internal/cmd/prime.go: Use RoleBeadIDTown() for all roles
- internal/doctor/agent_beads_check.go: Use RoleBeadIDTown() for rig agents
- internal/polecat/manager.go: Use RoleBeadIDTown("polecat")
- internal/cmd/crew_add.go: Use RoleBeadIDTown("crew")
- internal/beads/beads.go: Update comments to document hq- convention
- Templates: Update bd show gt-deacon to bd show hq-deacon

Note: Tmux session names remain as gt-* (runtime identifiers).
Bead IDs use hq-* for town-level agents (persistent storage).

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

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

internal/cmd/crew_add.go

@@ -108,7 +108,7 @@ func runCrewAdd(cmd *cobra.Command, args []string) error {
 				RoleType:   "crew",
 				Rig:        rigName,
 				AgentState: "idle",
-				RoleBead:   "gt-crew-role",
+				RoleBead:   beads.RoleBeadIDTown("crew"),
 			}
 			desc := fmt.Sprintf("Crew worker %s in %s - human-managed persistent workspace.", name, rigName)
 			if _, err := bd.CreateAgentBead(crewID, desc, fields); err != nil {

internal/cmd/prime.go

@@ -1204,40 +1204,40 @@ func getAgentFields(ctx RoleContext, state string) *beads.AgentFields {
 			RoleType:   "crew",
 			Rig:        ctx.Rig,
 			AgentState: state,
-			RoleBead:   "gt-crew-role",
+			RoleBead:   beads.RoleBeadIDTown("crew"),
 		}
 	case RolePolecat:
 		return &beads.AgentFields{
 			RoleType:   "polecat",
 			Rig:        ctx.Rig,
 			AgentState: state,
-			RoleBead:   "gt-polecat-role",
+			RoleBead:   beads.RoleBeadIDTown("polecat"),
 		}
 	case RoleMayor:
 		return &beads.AgentFields{
 			RoleType:   "mayor",
 			AgentState: state,
-			RoleBead:   "gt-mayor-role",
+			RoleBead:   beads.RoleBeadIDTown("mayor"),
 		}
 	case RoleDeacon:
 		return &beads.AgentFields{
 			RoleType:   "deacon",
 			AgentState: state,
-			RoleBead:   "gt-deacon-role",
+			RoleBead:   beads.RoleBeadIDTown("deacon"),
 		}
 	case RoleWitness:
 		return &beads.AgentFields{
 			RoleType:   "witness",
 			Rig:        ctx.Rig,
 			AgentState: state,
-			RoleBead:   "gt-witness-role",
+			RoleBead:   beads.RoleBeadIDTown("witness"),
 		}
 	case RoleRefinery:
 		return &beads.AgentFields{
 			RoleType:   "refinery",
 			Rig:        ctx.Rig,
 			AgentState: state,
-			RoleBead:   "gt-refinery-role",
+			RoleBead:   beads.RoleBeadIDTown("refinery"),
 		}
 	default:
 		return nil