Feature: progress bar (text) & instruction command

[mahdimef2]

• When the review process is running, there is no visible feedback, so it looks like the CLI is stuck; adding a simple loading message or spinner would make it clear that work is in progress.

• It would also be useful to have a single-line option to ignore specific files or paths during review
  For example, we could pass patterns like docs, tests, or *.md files to exclude them from analysis
  This helps reduce noise in the output and keeps the review focused on important code changes
  Overall, it improves both user experience and control over what gets analyzed.