fix: clamp progressBar to prevent RangeError on overflow, add 10 tests

progressBar() in skill-create-output.js could crash with RangeError when
percent > 100 because repeat() received a negative count. Fixed by
clamping filled to [0, width].

New tests:
- progressBar edge cases: 0%, 100%, and >100% confidence
- Empty patterns/instincts arrays
- post-edit-format: null tool_input, missing file_path, prettier failure
- setup-package-manager: --detect output completeness, current marker

scripts/skill-create-output.js

@@ -53,7 +53,7 @@ function stripAnsi(str) {
 }
 
 function progressBar(percent, width = 30) {
-  const filled = Math.round(width * percent / 100);
+  const filled = Math.min(width, Math.max(0, Math.round(width * percent / 100)));
   const empty = width - filled;
   const bar = chalk.green('█'.repeat(filled)) + chalk.gray('░'.repeat(empty));
   return `${bar} ${chalk.bold(percent)}%`;