Improve critique skill: sub-agents, scripts_path, browser overlays

- Add {{scripts_path}} build placeholder that resolves per-provider
  (${CLAUDE_PLUGIN_ROOT}/scripts for Claude Code, relative paths for others)
- Restructure critique into sub-agent architecture: LLM review and
  detector run independently to avoid bias, results synthesized at end
- Browser overlay is now a visual aid for the user only -- agent reads
  findings from console via [impeccable] prefix instead of scrolling
- Add scroll-to-top instruction before overlay injection
- Add allowed-tools frontmatter for detector bash commands
- Fix YAML parser to handle simple string arrays (not just - name: objects)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/lib/utils.js

@@ -36,6 +36,9 @@ export function parseFrontmatter(content) {
           const obj = {};
           obj.name = trimmed.slice(7).trim();
           currentArray.push(obj);
+        } else {
+          // Simple string item in array
+          currentArray.push(trimmed.slice(2));
         }
       }
       continue;