Update product dropdown and homepage icons to FontAwesome v7.2 Classic/Regular/Line (#244)

* Update product dropdown and homepage icons to FontAwesome v7.2 Classic/Regular/Line

* Fix APIs icon: use fa-solid for rectangle-api

---------

Co-authored-by: fern-api[bot] <115122769+fern-api[bot]@users.noreply.github.com>

Author: fern-api[bot]

fern/docs.yml

@@ -31,14 +31,14 @@ products:
   - display-name: Home
     slug: /
     path: products/home/home.yml
-    icon: fa-regular fa-house
+    icon: fa-regular fa-home
     subtitle: Overview and getting started
 
   # Column 1 (Products)
   - display-name: Platform
     slug: platform
     path: products/platform/platform.yml
-    icon: fa-regular fa-gear
+    icon: fa-regular fa-rectangles-mixed
     subtitle: Dashboard, configuration & administration
 
   - display-name: Call Flow Builder
@@ -57,7 +57,7 @@ products:
   - display-name: Server SDK
     slug: server-sdk
     path: products/realtime-sdk/versions/latest.yml
-    icon: fa-regular fa-bolt
+    icon: fa-regular fa-server
     subtitle: Control communications in real time from your server
     versions:
       - display-name: v4
@@ -92,7 +92,7 @@ products:
   - display-name: APIs
     slug: apis
     path: products/apis.yml
-    icon: fa-regular fa-code
+    icon: fa-solid fa-rectangle-api
     subtitle: Send SMS, manage calls, administer SignalWire
 
   - display-name: SWML
@@ -104,7 +104,7 @@ products:
   - display-name: Compatibility API
     slug: compatibility-api
     path: products/compatibility-api/compatibility-api.yml
-    icon: fa-regular fa-right-left
+    icon: fa-regular fa-scroll-old
     subtitle: Migrate your TwiML™-based applications to SignalWire with ease
 
 theme:

fern/products/home/pages/welcome.mdx

@@ -62,7 +62,7 @@ layout: custom
       </div>
 
       <CardGroup cols={3}>
-        <Card title="REST APIs" icon="fa-regular fa-code" href="/docs/apis">
+        <Card title="REST APIs" icon="fa-solid fa-rectangle-api" href="/docs/apis">
           Complete API reference for voice, video, messaging, and AI services.
         </Card>
         <Card title="SWML" icon="fa-regular fa-file-code" href="/docs/swml">
@@ -71,7 +71,7 @@ layout: custom
         <Card title="Agents SDK" icon="fa-regular fa-robot" href="/docs/agents-sdk">
           Create AI agents for voice, video, and text interactions.
         </Card>
-        <Card title="Server SDK" icon="fa-regular fa-bolt" href="/docs/server-sdk/v4/node">
+        <Card title="Server SDK" icon="fa-regular fa-server" href="/docs/server-sdk/v4/node">
           Server-side SDK for managing real-time voice, video, messaging, and chat.
         </Card>
         <Card title="Browser SDK" icon="fa-regular fa-browser" href="/docs/browser-sdk">
@@ -93,10 +93,10 @@ layout: custom
         <Card title="Call Flow Builder" icon="fa-regular fa-diagram-project" href="/docs/call-flow-builder">
           Build drag-and-drop calling applications without writing code.
         </Card>
-        <Card title="Platform & Dashboard" icon="fa-regular fa-gear" href="/docs/platform">
+        <Card title="Platform & Dashboard" icon="fa-regular fa-rectangles-mixed" href="/docs/platform">
           Manage your SignalWire space, phone numbers, and resources.
         </Card>
-        <Card title="Wirestarter" icon="fa-regular fa-plug" href="/docs/platform/wirestarter">
+        <Card title="Wirestarter" icon="fa-regular fa-box-full" href="/docs/platform/wirestarter">
           Scaffold a new SignalWire project in seconds.
         </Card>
         <Card title="SWSH" icon="fa-regular fa-terminal" href="/docs/platform/swsh">