Support for nested crafting categories (Upstream PR #8059)

[ushkinaz]

Summary

Implement support for nested crafting categories as introduced in upstream PR #8059. This includes data layer updates to handle the new nested_category type and UI changes to maintain parity with the game's hierarchical crafting organization and subcategory display.

Categorization

enhancement, logic, data parsing

Context

• src/data.ts: Data loading and indexing logic.
• src/types.ts: Type definitions for recipes and categories.
• src/types/Recipe.svelte: Recipe detail rendering.
• src/types/Item.svelte: Item detail rendering (breadcrumb).
• src/types/item/Recipes.svelte: Recipe listing and indexing.

Impact

The wiki will stay synchronized with the latest C-BN data structure. Users will benefit from better-organized crafting information and a UI that matches the in-game experience (e.g., "Category / Subcategory" labels).

Severity

Medium

Tech details

• Implement NestedCategory type in src/types.ts.
• Update CBNData in src/data.ts to index nested_category objects even though they lack a result field.
• Modify Recipe.svelte to render nested category children and handle entries without components/tools.
• Update Item.svelte and Recipe.svelte to display hierarchical category information (e.g., FOOD > SNACKS > SANDWICHES).
• Update recipe indexing in src/types/item/Recipes.svelte to surface recursive relationships in nested categories.

Examples

PR #8059 introductes FOOD > SNACKS > SANDWICHES hierarchy.
Example nested category object:

{
  "type": "nested_category",
  "id": "hot_drinks",
  "nested_name": "hot drinks",
  "category": "CC_FOOD",
  "subcategory": "CSC_FOOD_DRINKS",
  "description": "Warm beverages and infusions.",
  "nested_category_data": ["coffee", "tea", "herbal_tea"]
}

Acceptance criteria

• nested_category objects are correctly parsed and indexed.
• Item/Recipe pages show full category + subcategory breadcrumbs/labels.
• Nested categories correctly list their children in the UI.
• Logic stays robust across standard recipe and nested category entries.

Dependencies

Blocked by: cataclysmbn/Cataclysm-BN#8059