feat: shared tls cert, validation fixes

1 files changed, 15 insertions, 8 deletions

diff --git a/internal/world/grid.go b/internal/world/grid.go
index 9773241..5229273 100644
--- a/internal/world/grid.go
+++ b/internal/world/grid.go
@@ -2,15 +2,22 @@
 // their spawns, and ground items — the spatial state of Vesta.
 package world
 
+// GridConflictKind identifies the kind of grid layout conflict.
+type GridConflictKind string
+
+const (
+	// GridConflictTwist: one room is forced onto two different grid cells (it
+	// was already placed at Existing but a later exit wants it at Want).
+	GridConflictTwist GridConflictKind = "twist"
+	// GridConflictOverlap: two distinct rooms want the same grid cell
+	// (Occupier already holds Want).
+	GridConflictOverlap GridConflictKind = "overlap"
+)
+
 // GridConflict describes a layout conflict found while embedding rooms onto a
 // 3D grid via their exit deltas.
-//
-//   - "twist":   one room is forced onto two different grid cells (it was already
-//     placed at Existing but a later exit wants it at Want).
-//   - "overlap": two distinct rooms want the same grid cell (Occupier already
-//     holds Want).
 type GridConflict struct {
-	Kind     string  // "twist" or "overlap"
+	Kind     GridConflictKind
 	From     int     // room whose exit produced the conflict
 	Dir      ExitDir // exit direction taken from From
 	Target   int     // room being placed
@@ -76,7 +83,7 @@ func BuildGrid(seed int, load func(int) (*Room, bool), include func(int) bool, e
 			if existing, seen := g.Coord[target]; seen {
 				if existing != want && onConflict != nil {
 					onConflict(GridConflict{
-						Kind: "twist", From: rid, Dir: dir,
+						Kind: GridConflictTwist, From: rid, Dir: dir,
 						Target: target, Want: want, Existing: existing,
 					})
 				}
@@ -85,7 +92,7 @@ func BuildGrid(seed int, load func(int) (*Room, bool), include func(int) bool, e
 			if occupier, used := g.RoomAt[want]; used && occupier != target {
 				if onConflict != nil {
 					onConflict(GridConflict{
-						Kind: "overlap", From: rid, Dir: dir,
+						Kind: GridConflictOverlap, From: rid, Dir: dir,
 						Target: target, Want: want, Occupier: occupier,
 					})
 				}