fix: gate content-script debug logging behind dev mode

Selection text substrings no longer reach the host page's console in
production builds; logs only fire under 'wxt' dev serve.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

entrypoints/content.ts

@@ -3,7 +3,16 @@ import { defineContentScript } from 'wxt/utils/define-content-script';
 export default defineContentScript({
   matches: ['<all_urls>'],
   main() {
-    console.log('LexAI content script loaded');
+    // Debug logging is stripped in production builds — selection text must never
+    // reach the host page's console outside dev.
+    const isDev = import.meta.env.COMMAND === 'serve';
+    const debugLog = (...args: unknown[]) => {
+      if (isDev) console.log(...args);
+    };
+    const debugWarn = (...args: unknown[]) => {
+      if (isDev) console.warn(...args);
+    };
+    debugLog('LexAI content script loaded');
 
     // ─── State ───────────────────────────────────────────────────────────────
     let toolbar: HTMLElement | null = null;
@@ -83,7 +92,7 @@ export default defineContentScript({
           storedElement = activeEl;
           storedRange   = null;
           selectedText  = activeEl.value.substring(start, end);
-          console.log('[LexAI captureForButton] textarea captured', { start, end, text: selectedText.substring(0, 40) });
+          debugLog('[LexAI captureForButton] textarea captured', { start, end, text: selectedText.substring(0, 40) });
         }
       } else {
         const sel = window.getSelection();
@@ -93,7 +102,7 @@ export default defineContentScript({
           storedStart   = -1;
           storedEnd     = -1;
           selectedText  = sel.toString().trim();
-          console.log('[LexAI captureForButton] DOM range captured', { text: selectedText.substring(0, 40) });
+          debugLog('[LexAI captureForButton] DOM range captured', { text: selectedText.substring(0, 40) });
         }
       }
     }
@@ -586,7 +595,7 @@ export default defineContentScript({
       const snapElement = storedElement;
       const snapRange   = storedRange ? storedRange.cloneRange() : null;
 
-      console.log('[LexAI runAction] snapshot captured', {
+      debugLog('[LexAI runAction] snapshot captured', {
         snapStart,
         snapEnd,
         snapElement: snapElement?.tagName,
@@ -868,7 +877,7 @@ export default defineContentScript({
         replaceBtn.addEventListener('mousedown', (e) => e.preventDefault());
         replaceBtn.addEventListener('click', () => {
           // Debug log — confirms exactly what state we have at replace time
-          console.log('[LexAI Replace]', {
+          debugLog('[LexAI Replace]', {
             snapStart,
             snapEnd,
             snapElement: snapElement?.tagName ?? 'null',
@@ -881,8 +890,8 @@ export default defineContentScript({
             // textarea / input path — use the snapshot indices directly
             const before = snapElement.value.substring(0, snapStart);
             const after  = snapElement.value.substring(snapEnd);
-            console.log('[LexAI Replace] before:', JSON.stringify(before.substring(0, 30)));
-            console.log('[LexAI Replace] after:', JSON.stringify(after.substring(0, 30)));
+            debugLog('[LexAI Replace] before:', JSON.stringify(before.substring(0, 30)));
+            debugLog('[LexAI Replace] after:', JSON.stringify(after.substring(0, 30)));
             snapElement.value = before + resultText + after;
             snapElement.setSelectionRange(snapStart, snapStart + resultText.length);
             snapElement.dispatchEvent(new Event('input',  { bubbles: true }));
@@ -893,7 +902,7 @@ export default defineContentScript({
             // Strategy: restore the original selection, then just "type" the new text.
             // The browser automatically replaces selected text on insert — no manual
             // deleteContents() needed (and safer since stale range deletes can go wrong).
-            console.log('[LexAI Replace] using DOM range — restoring selection + inserting');
+            debugLog('[LexAI Replace] using DOM range — restoring selection + inserting');
             try {
               const sel = window.getSelection();
               if (sel) {
@@ -902,10 +911,10 @@ export default defineContentScript({
               }
               document.execCommand('insertText', false, resultText); // replaces selection
             } catch (err) {
-              console.warn('[LexAI Replace] execCommand failed:', err);
+              debugWarn('[LexAI Replace] execCommand failed:', err);
             }
           } else {
-            console.warn('[LexAI Replace] NO VALID SNAP STATE — snapStart:', snapStart, 'snapEnd:', snapEnd, 'snapElement:', snapElement, 'snapRange:', snapRange);
+            debugWarn('[LexAI Replace] NO VALID SNAP STATE — snapStart:', snapStart, 'snapEnd:', snapEnd, 'snapElement:', snapElement, 'snapRange:', snapRange);
           }
 
           selectionLocked = false;