feat(landing): SDK grid now covers 36 repos across 5 tiers

Adds 9 new tiles + 1 new tier (Shell & ops):

  Mobile & Desktop    Swift gains 'combine' alt chip
  Native & systems    new cpp-ue4 tile (Unreal Engine);
                      cpp-restsdk gains 'tiny' alt chip;
                      rust gains 'axum (server)' alt chip
  Server & scripting  new java, go, ruby tiles
  Shell & ops (NEW)   bash, powershell

Total: 18 primary tiles + 8 alt-flavour chips → 36 unique
LetheanNetwork/sdk-* repos linked.

Co-Authored-By: Virgil <virgil@lethean.io>

Author: Snider

src/components/SDKGrid.astro

@@ -81,7 +81,8 @@ const tiers: { name: string; items: SDK[] }[] = [
         label: 'Swift',
         iconSlug: 'swift',
         colour: 'F05138',
-        blurb: 'iOS · macOS · SwiftUI',
+        blurb: 'iOS · macOS · 2 flavours',
+        alts: [{ id: 'swift-combine', label: 'combine' }],
       },
       {
         id: 'kotlin',
@@ -122,15 +123,26 @@ const tiers: { name: string; items: SDK[] }[] = [
         label: 'C++',
         iconSlug: 'cplusplus',
         colour: '00599C',
-        blurb: 'cpprestsdk · 2 flavours',
-        alts: [{ id: 'cpp-qt', label: 'qt' }],
+        blurb: 'cpprestsdk · 3 flavours',
+        alts: [
+          { id: 'cpp-qt', label: 'qt' },
+          { id: 'cpp-tiny', label: 'tiny' },
+        ],
+      },
+      {
+        id: 'cpp-ue4',
+        label: 'Unreal Engine',
+        iconSlug: 'unrealengine',
+        colour: '0E1128',
+        blurb: 'UE4 C++ · gaming plugins',
       },
       {
         id: 'rust',
         label: 'Rust',
         iconSlug: 'rust',
-        colour: '000000',
-        blurb: 'reqwest async',
+        colour: 'CE412B',
+        blurb: 'reqwest async · 2 flavours',
+        alts: [{ id: 'rust-axum', label: 'axum (server)' }],
       },
     ],
   },
@@ -144,6 +156,20 @@ const tiers: { name: string; items: SDK[] }[] = [
         colour: '512BD4',
         blurb: 'net8 · net6 · net47 · net48',
       },
+      {
+        id: 'java',
+        label: 'Java',
+        iconSlug: 'openjdk',
+        colour: '437291',
+        blurb: 'JVM · Maven Central',
+      },
+      {
+        id: 'go',
+        label: 'Go',
+        iconSlug: 'go',
+        colour: '00ADD8',
+        blurb: 'native client (or use dappco.re/go)',
+      },
       {
         id: 'python',
         label: 'Python',
@@ -158,6 +184,13 @@ const tiers: { name: string; items: SDK[] }[] = [
         colour: '777BB4',
         blurb: 'Guzzle-based',
       },
+      {
+        id: 'ruby',
+        label: 'Ruby',
+        iconSlug: 'ruby',
+        colour: 'CC342D',
+        blurb: 'Faraday · bundler / gem',
+      },
       {
         id: 'clojure',
         label: 'Clojure',
@@ -167,6 +200,25 @@ const tiers: { name: string; items: SDK[] }[] = [
       },
     ],
   },
+  {
+    name: 'Shell & ops',
+    items: [
+      {
+        id: 'bash',
+        label: 'Bash',
+        iconSlug: 'gnubash',
+        colour: '4EAA25',
+        blurb: 'shell-only environments',
+      },
+      {
+        id: 'powershell',
+        label: 'PowerShell',
+        iconSlug: 'powershell',
+        colour: '5391FE',
+        blurb: 'Windows admin / scripting',
+      },
+    ],
+  },
 ];
 
 const totalRepos = tiers.reduce(