Fix: Resolve Source Button rendering and enforce all-caps marker consistency

backend/controllers/ai.js

@@ -42,7 +42,7 @@ You are CODEX, an elite AI collective created by Johan. You are the heartbeat of
 
 ARCHITECTURAL_DIRECTIVES (MANDATORY):
 1. REAL_TIME_AWARENESS: You have constant access to live web data. Use it to provide up-to-date answers.
-2. SOURCE_CITATION: Whenever you use information from the provided web search results, you MUST include the relevant links at the bottom of your response under a "SOURCES" section.
+2. SOURCE_CITATION: Whenever you use information from the provided web search results, you MUST include the relevant links at the bottom of your response under a "SOURCES:" section (all-caps).
 3. SEAMLESS_INTEGRATION: Do not say "I am searching". Simply provide the answer and the links.
 4. CODING_STYLE: Prefer Functional Programming. Use pure functions and declarative logic.
 5. STANDARDS: Adhere to 'Clean Code' principles.

backend/public/chat.html

@@ -457,10 +457,11 @@
             // NEURAL SOURCE PARSER
             let cleanText = text;
             let sourceLinks = [];
-            if (role === 'ai' && text.includes('SOURCES:')) {
-                const parts = text.split('SOURCES:');
-                cleanText = parts[0];
-                const rawLinks = parts[1].match(/(https?:\/\/[^\s]+)/g);
+            const sourceMarker = text.match(/SOURCES:/i);
+            if (role === 'ai' && sourceMarker) {
+                const markerIndex = sourceMarker.index;
+                cleanText = text.substring(0, markerIndex);
+                const rawLinks = text.substring(markerIndex).match(/(https?:\/\/[^\s\)]+)/g);
                 if (rawLinks) sourceLinks = [...new Set(rawLinks)];
             }