Route all affiliate links through voltplan.app

Replace client-side Amazon affiliate resolution with server-side
redirects via voltplan.app/{componentId} and voltplan.app/search?q=.
Remove AmazonAffiliate, affiliate link fetching, and per-model
affiliate fields in favor of a single componentID.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

CableTests/ComponentLibraryItemTests.swift

@@ -15,7 +15,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: nil,
             defaultUtilizationFactorPercent: nil,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         let german = Foundation.Locale(identifier: "de_DE")
@@ -33,7 +32,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: nil,
             defaultUtilizationFactorPercent: nil,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         let french = Foundation.Locale(identifier: "fr_FR")
@@ -54,7 +52,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: nil,
             defaultUtilizationFactorPercent: nil,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         let languages = ["fr-FR", "de-DE", "es-ES"]
@@ -72,7 +69,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: nil,
             defaultUtilizationFactorPercent: nil,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         let spanishMexico = Foundation.Locale(identifier: "es_MX")
@@ -90,7 +86,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: nil,
             defaultUtilizationFactorPercent: nil,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         let germanSwitzerland = Foundation.Locale(identifier: "de_CH")
@@ -108,7 +103,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: nil,
             defaultUtilizationFactorPercent: nil,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         let french = Foundation.Locale(identifier: "fr_FR")
@@ -126,7 +120,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: 0,
             defaultUtilizationFactorPercent: nil,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         #expect(item.normalizedDutyCyclePercent == 100)
@@ -143,7 +136,6 @@ struct ComponentLibraryItemTests {
             dutyCyclePercent: nil,
             defaultUtilizationFactorPercent: 50,
             iconURL: nil,
-            affiliateLinks: []
         )
 
         #expect(item.defaultDailyUsageHours == 12)