🎨 style(chatTrigger): update chat trigger button styles to include disabled state

🔧 chore(index.css): add CSS variable for disabled chat trigger color
🔧 chore(tailwind.config.js): add CSS variable for disabled chat trigger color

src/frontend/src/components/chatComponent/chatTrigger/index.tsx

@@ -33,7 +33,7 @@ export default function ChatTrigger({ open, setOpen, isBuilt }) {
           <button onClick={handleClick} className={ "transition-all fixed bottom-4 right-4 flex justify-center items-center py-1 px-3 w-12 h-12 rounded-full shadow-md shadow-round-btn-shadow hover:shadow-round-btn-shadow bg-border "+ (!isBuilt ? "cursor-not-allowed" : "cursor-pointer")}>
             <div className="flex gap-3">
               <MessagesSquare
-                className={"h-6 w-6 transition-all " + (isBuilt ? "fill-chat-trigger stroke-chat-trigger stroke-1" : "fill-chat-trigger/40 stroke-1 stroke-chat-trigger/40")}
+                className={"h-6 w-6 transition-all " + (isBuilt ? "fill-chat-trigger stroke-chat-trigger stroke-1" : "fill-chat-trigger-disabled stroke-1 stroke-chat-trigger-disabled")}
                 style={{ color: "white" }}
                 strokeWidth={1.5}
               />

src/frontend/src/index.css

@@ -47,6 +47,7 @@
   --blur-shared: #151923de;
   --build-trigger: 	#dc735b;
   --chat-trigger: #5c8be1;
+  --chat-trigger-disabled: #9db7e8;
   --status-red: #ef4444;
   --status-yellow: #eab308;
   --status-green: #4ade80;
@@ -104,6 +105,7 @@
   --blur-shared: #151923d2;
   --build-trigger: 	#dc735b;
   --chat-trigger: #5c8be1;
+  --chat-trigger-disabled: #9db7e8;
   --status-red: #ef4444;
   --status-yellow: #eab308;
   --status-green: #4ade80;

src/frontend/tailwind.config.js

@@ -52,6 +52,7 @@ module.exports = {
         "btn-shadow": "var(--round-btn-shadow)",
         "build-trigger": "var(--build-trigger)",
         "chat-trigger": "var(--chat-trigger)",
+        "chat-trigger-disabled": "var(--chat-trigger-disabled)",
         "blur-shared": "var(--blur-shared)",
         "dark-blue": "var(--dark-blue)",
         "dark-gray": "var(--dark-gray)",