Fix gt sling/hook: use Town beads for town-level roles (gt-4ol8f)

When slinging or hooking work to mayor/deacon, the pin now lands in Town
beads (~/.beads/) instead of rig beads. This ensures gt mol status finds
the pinned work when run from ~/gt.

The issue was that town-level roles operate from the town root, so their
hooks should be discoverable from there.

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

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

internal/cmd/hook.go

@@ -8,6 +8,7 @@ import (
 	"github.com/spf13/cobra"
 	"github.com/steveyegge/gastown/internal/beads"
 	"github.com/steveyegge/gastown/internal/style"
+	"github.com/steveyegge/gastown/internal/workspace"
 )
 
 var hookCmd = &cobra.Command{
@@ -154,8 +155,17 @@ func runHook(cmd *cobra.Command, args []string) error {
 	}
 
 	// Pin the bead using bd update (discovery-based approach)
+	// For town-level roles (mayor, deacon), run from Town root so the pin
+	// lands in Town beads where these roles naturally operate.
 	pinCmd := exec.Command("bd", "update", beadID, "--status=pinned", "--assignee="+agentID)
 	pinCmd.Stderr = os.Stderr
+	if isTownLevelRole(agentID) {
+		townRoot, err := workspace.FindFromCwd()
+		if err != nil {
+			return fmt.Errorf("finding town root for town-level role: %w", err)
+		}
+		pinCmd.Dir = townRoot
+	}
 	if err := pinCmd.Run(); err != nil {
 		return fmt.Errorf("pinning bead: %w", err)
 	}