fix: consolidate WeaponKey type definition

- Update entities.ts WeaponKey to include all required fields (granblue_id, series, group, order)
- Use snake_case naming (granblue_id) to match API/database conventions
- Update modifiers.ts to import from entities.ts and use snake_case property
- Removes duplicate WeaponKey type and eliminates type conflicts

Fixes "Property 'granblueId' does not exist on type 'WeaponKey'" and type assignment errors.

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

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

src/lib/types/api/entities.ts

@@ -167,10 +167,13 @@ export interface Awakening {
 // WeaponKey entity
 export interface WeaponKey {
   id: string
+  granblue_id: string
   name: LocalizedName
   slug: string
-  keyType: string
+  series: number[]
   slot: number
+  group: number
+  order: number
 }
 
 // SimpleAxSkill for weapon AX skills

src/lib/utils/modifiers.ts

@@ -3,7 +3,7 @@
  */
 
 import type { Awakening } from '$lib/types/Awakening'
-import type { WeaponKey } from '$lib/types/WeaponKey'
+import type { WeaponKey } from '$lib/types/api/entities'
 import type { SimpleAxSkill } from '$lib/types/SimpleAxSkill'
 
 /**
@@ -41,7 +41,7 @@ export function getWeaponKeyImage(
 
 	// Handle element-specific telumas (Draconic weapons)
 	const elementalTelumas = [15008, 16001, 16002]
-	const granblueId = parseInt(key.granblueId || '0')
+	const granblueId = parseInt(key.granblue_id || '0')
 
 	if (elementalTelumas.includes(granblueId) && weaponElement) {
 		filename += `-${weaponElement}`