Follow up page context redux (#1960)

* Trim whitespace from links

* Don't create context chip if context has been used

* Add belt and braces fix for enter submission

Author: jonathanKingston

injected/src/features/duck-ai-listener.js

@@ -870,6 +870,15 @@ export default class DuckAiListener extends ContentFeature {
         if (match) {
             const extractedPrompt = match[2].trim();
 
+            // Mark context as used since we found a prompt that was actually sent
+            // Belt and braces solution to ensure context is only used once
+            if (!this.hasContextBeenUsed) {
+                this.hasContextBeenUsed = true;
+                this.removeContextChip();
+                this.updateButtonAppearance();
+                this.log.info('Context marked as used based on prompt cleanup');
+            }
+
             // Create cleaned content
             let cleanedContent = '';
             if (extractedPrompt) {
@@ -977,7 +986,7 @@ export default class DuckAiListener extends ContentFeature {
         const callback = (_, observer) => {
             this.findTextBox();
             this.setupMessageInterception();
-            if (this.textBox && this.pageData && this.sendButton) {
+            if (this.textBox && this.pageData && this.sendButton && !this.hasContextBeenUsed) {
                 this.createContextChip();
                 // No longer needed, we've found the text box.
                 observer.disconnect();

injected/src/features/page-context.js

@@ -57,9 +57,13 @@ function domToMarkdown(node, maxLength = Infinity) {
     }
 }
 
+function collapseAndTrim(str) {
+    return collapseWhitespace(str).trim();
+}
+
 function getLinkText(node) {
     const href = node.getAttribute('href');
-    return href ? `[${node.textContent}](${href})` : node.textContent;
+    return href ? `[${collapseAndTrim(node.textContent)}](${href})` : collapseWhitespace(node.textContent);
 }
 
 export default class PageContext extends ContentFeature {