fix: robust foreground detection for macOS and multiple bug fixes

- Use `ps -o stat=` to check process foreground state directly,
  fixing macOS where tmux pane_current_command reports "zsh" instead
  of the child process. Falls back to pane_current_command safely.
- Fix print mode retry off-by-one (maxRetries=5 only gave 4 retries)
- Fix sendKeys failure leaving state unupdated (tight error loop)
- Validate customPatterns config entries (non-string/invalid regex crashed monitor)
- Parse "resets in: N hours" format (was detected but not time-parsed)

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

package.json

@@ -1,6 +1,6 @@
 {
   "name": "claude-auto-retry",
-  "version": "0.2.1",
+  "version": "0.2.2",
   "description": "Automatically retry Claude Code sessions when hitting Anthropic subscription rate limits",
   "type": "module",
   "bin": {