Curate icons to essential set (~96 icons)

- Reduce SVG icons from 3,447 to 96 (76 from Simple Icons + 20 custom)
- Update build script to filter and copy only curated icons
- Remove unused genericons-neue dependency and folder
- Keep legacy icons (twitter, nostr, googlepodcasts) as custom icons

Icon categories included:
- Social networks (mastodon, bluesky, twitter, facebook, etc.)
- Fediverse (activitypub, pixelfed, peertube, lemmy, etc.)
- Developer platforms (github, gitlab, codeberg, etc.)
- Media/content (spotify, youtube, substack, etc.)
- Custom utility icons (website, mail, book, etc.)

Author: pfefferle

includes/simple-icons.php

@@ -20,7 +20,6 @@
 	],
 	"devDependencies": {
 		"@wordpress/env": "^10.0.0",
-		"genericons-neue": "^4.0.5",
 		"sass": "^1.77.0",
 		"simple-icons": "^13.0.0"
 	},

package.json

@@ -1,46 +1,43 @@
 // Brand colors from simpleicons.org
 .relme li a {
 
-	.svg-blogger                       {
+	.svg-blogger      {
 		color: #FF5722;
 	}
-	.svg-bluesky                       {
+	.svg-bluesky      {
 		color: #0285FF;
 	}
-	.svg-facebook                      {
+	.svg-facebook     {
 		color: #0866FF;
 	}
-	.svg-flickr                        {
+	.svg-flickr       {
 		color: #0063DC;
 	}
-	.svg-github                        {
+	.svg-github       {
 		color: #181717;
 	}
-	.svg-instagram                     {
+	.svg-instagram    {
 		color: #E4405F;
 	}
-	.svg-mastodon                      {
+	.svg-mastodon     {
 		color: #6364FF;
 	}
-	.svg-medium                        {
+	.svg-medium       {
 		color: #000000;
 	}
-	.svg-microdotblog                  {
+	.svg-microdotblog {
 		color: #FF8800;
 	}
-	.svg-reddit                        {
+	.svg-reddit       {
 		color: #FF4500;
 	}
-	.svg-swarm                         {
+	.svg-swarm        {
 		color: #FFA633;
 	}
-	.svg-tumblr                        {
+	.svg-tumblr       {
 		color: #36465D;
 	}
-	.svg-twitter                       {
-		color: #1D9BF0;
-	}
-	.svg-wordpress                     {
+	.svg-wordpress    {
 		color: #21759B;
 	}
 }