Refine seed data: route ordering and boss configs up to gen 8 (WIP)

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backend/src/app/seeds/data/firered-bosses.json

@@ -7,7 +7,7 @@
     "badge_image_url": "/badges/boulder-badge.png",
     "level_cap": 14,
     "order": 1,
-    "after_route_name": null,
+    "after_route_name": "Viridian Forest",
     "location": "Pewter City Gym",
     "section": null,
     "sprite_url": "/boss-sprites/firered/brock.png",
@@ -34,7 +34,7 @@
     "badge_image_url": "/badges/cascade-badge.png",
     "level_cap": 21,
     "order": 2,
-    "after_route_name": null,
+    "after_route_name": "Cerulean City",
     "location": "Cerulean City Gym",
     "section": null,
     "sprite_url": "/boss-sprites/firered/misty.png",
@@ -61,7 +61,7 @@
     "badge_image_url": "/badges/thunder-badge.png",
     "level_cap": 24,
     "order": 3,
-    "after_route_name": null,
+    "after_route_name": "Vermilion City",
     "location": "Vermillion City Gym",
     "section": null,
     "sprite_url": "/boss-sprites/firered/lt-surge.png",
@@ -94,26 +94,12 @@
     "badge_image_url": "/badges/rainbow-badge.png",
     "level_cap": 29,
     "order": 4,
-    "after_route_name": null,
+    "after_route_name": "Celadon City",
     "location": "Celadon City Gym",
     "section": null,
     "sprite_url": "/boss-sprites/firered/erika.png",
     "pokemon": []
   },
-  {
-    "name": "Sabrina",
-    "boss_type": "gym_leader",
-    "specialty_type": null,
-    "badge_name": "Marsh Badge",
-    "badge_image_url": "/badges/marsh-badge.png",
-    "level_cap": 43,
-    "order": 5,
-    "after_route_name": null,
-    "location": "Saffron City Gym",
-    "section": null,
-    "sprite_url": "/boss-sprites/firered/sabrina.png",
-    "pokemon": []
-  },
   {
     "name": "Koga",
     "boss_type": "gym_leader",
@@ -121,13 +107,27 @@
     "badge_name": "Soul Badge",
     "badge_image_url": "/badges/soul-badge.png",
     "level_cap": 43,
-    "order": 6,
-    "after_route_name": null,
+    "order": 5,
+    "after_route_name": "Fuchsia City",
     "location": "Fuchsia City Gym",
     "section": null,
     "sprite_url": "/boss-sprites/firered/koga.png",
     "pokemon": []
   },
+  {
+    "name": "Sabrina",
+    "boss_type": "gym_leader",
+    "specialty_type": null,
+    "badge_name": "Marsh Badge",
+    "badge_image_url": "/badges/marsh-badge.png",
+    "level_cap": 43,
+    "order": 6,
+    "after_route_name": "Fighting Dojo",
+    "location": "Saffron City Gym",
+    "section": null,
+    "sprite_url": "/boss-sprites/firered/sabrina.png",
+    "pokemon": []
+  },
   {
     "name": "Blaine",
     "boss_type": "gym_leader",
@@ -136,7 +136,7 @@
     "badge_image_url": "/badges/volcano-badge.png",
     "level_cap": 47,
     "order": 7,
-    "after_route_name": null,
+    "after_route_name": "Cinnabar Island",
     "location": "Cinnabar Island Gym",
     "section": null,
     "sprite_url": "/boss-sprites/firered/blaine.png",
@@ -150,7 +150,7 @@
     "badge_image_url": "/badges/earth-badge.png",
     "level_cap": 50,
     "order": 8,
-    "after_route_name": null,
+    "after_route_name": "Power Plant",
     "location": "Viridian City Gym",
     "section": null,
     "sprite_url": "/boss-sprites/firered/giovanni.png",
@@ -164,7 +164,7 @@
     "badge_image_url": null,
     "level_cap": 54,
     "order": 9,
-    "after_route_name": null,
+    "after_route_name": "Victory Road (Kanto)",
     "location": "Indigo Plateau",
     "section": null,
     "sprite_url": "/boss-sprites/firered/lorelei.png",
@@ -178,7 +178,7 @@
     "badge_image_url": null,
     "level_cap": 56,
     "order": 10,
-    "after_route_name": null,
+    "after_route_name": "Victory Road (Kanto)",
     "location": "Indigo Plateau",
     "section": null,
     "sprite_url": "/boss-sprites/firered/bruno.png",
@@ -192,7 +192,7 @@
     "badge_image_url": null,
     "level_cap": 58,
     "order": 11,
-    "after_route_name": null,
+    "after_route_name": "Victory Road (Kanto)",
     "location": "Indigo Plateau",
     "section": null,
     "sprite_url": "/boss-sprites/firered/agatha.png",
@@ -206,7 +206,7 @@
     "badge_image_url": null,
     "level_cap": 60,
     "order": 12,
-    "after_route_name": null,
+    "after_route_name": "Victory Road (Kanto)",
     "location": "Indigo Plateau",
     "section": null,
     "sprite_url": "/boss-sprites/firered/lance.png",
@@ -220,7 +220,7 @@
     "badge_image_url": null,
     "level_cap": 63,
     "order": 13,
-    "after_route_name": null,
+    "after_route_name": "Victory Road (Kanto)",
     "location": "Indigo Plateau",
     "section": null,
     "sprite_url": "/boss-sprites/firered/blue.png",