feat: Add armor and shields to equipment picker

Import armor_shields.yml and merge it with weapons in the '+ Add Equipment' picker. Armor/shield entries are formatted with DEF/MDEF/Init fields. Adds armor and shield filter categories alongside existing weapon categories.

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

data/armor_shields.yml

@@ -48,7 +48,7 @@ armor_shields:
     category: armor
     description: No Quality.
 
-  - name: Bronze Plate (E)
+  - name: Bronze Plate ✦
     cost: 200
     defense: "11"
     magic_defense: "INS size"
@@ -56,7 +56,7 @@ armor_shields:
     category: armor
     description: No Quality.
 
-  - name: Runic Plate (E)
+  - name: Runic Plate ✦
     cost: 250
     defense: "11"
     magic_defense: "INS size +1"
@@ -64,7 +64,7 @@ armor_shields:
     category: armor
     description: No Quality.
 
-  - name: Steel Plate (E)
+  - name: Steel Plate ✦
     cost: 300
     defense: "12"
     magic_defense: "INS size"
@@ -80,7 +80,7 @@ armor_shields:
     category: shield
     description: No Quality.
 
-  - name: Runic Shield (E)
+  - name: Runic Shield ✦
     cost: 150
     defense: "+2"
     magic_defense: "+2"