Add Brave CDP automation, replace Oracle browser mode

Connects to user's running Brave via Chrome DevTools Protocol
to automate ChatGPT interaction. Uses puppeteer-core to open a
tab, send the prompt, wait for response, and extract the result.

No cookies, no separate profiles, no copy/paste. Just connects
to the browser where the user is already logged in.

One-time setup: relaunch Brave with --remote-debugging-port=9222

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

node_modules/yargs/build/lib/utils/levenshtein.js

@@ -0,0 +1,34 @@
+export function levenshtein(a, b) {
+    if (a.length === 0)
+        return b.length;
+    if (b.length === 0)
+        return a.length;
+    const matrix = [];
+    let i;
+    for (i = 0; i <= b.length; i++) {
+        matrix[i] = [i];
+    }
+    let j;
+    for (j = 0; j <= a.length; j++) {
+        matrix[0][j] = j;
+    }
+    for (i = 1; i <= b.length; i++) {
+        for (j = 1; j <= a.length; j++) {
+            if (b.charAt(i - 1) === a.charAt(j - 1)) {
+                matrix[i][j] = matrix[i - 1][j - 1];
+            }
+            else {
+                if (i > 1 &&
+                    j > 1 &&
+                    b.charAt(i - 2) === a.charAt(j - 1) &&
+                    b.charAt(i - 1) === a.charAt(j - 2)) {
+                    matrix[i][j] = matrix[i - 2][j - 2] + 1;
+                }
+                else {
+                    matrix[i][j] = Math.min(matrix[i - 1][j - 1] + 1, Math.min(matrix[i][j - 1] + 1, matrix[i - 1][j] + 1));
+                }
+            }
+        }
+    }
+    return matrix[b.length][a.length];
+}