refactor: Update CLI commands to use new unified entry points

Updated all command examples in CLI scripts from old pattern:
  python3 cli/<script>.py → skill-seekers <command>

Changes:
- doc_scraper.py → skill-seekers scrape
- github_scraper.py → skill-seekers github
- pdf_scraper.py → skill-seekers pdf
- unified_scraper.py → skill-seekers unified
- enhance_skill.py → skill-seekers enhance
- enhance_skill_local.py → skill-seekers enhance
- package_skill.py → skill-seekers package
- estimate_pages.py → skill-seekers estimate

This reflects the new modern Python packaging with proper entry
points. Users can now use clean commands instead of file paths.

Files updated: 10 CLI scripts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

src/skill_seekers/cli/package_skill.py

@@ -4,9 +4,9 @@ Simple Skill Packager
 Packages a skill directory into a .zip file for Claude.
 
 Usage:
-    python3 cli/package_skill.py output/steam-inventory/
-    python3 cli/package_skill.py output/react/
-    python3 cli/package_skill.py output/react/ --no-open  # Don't open folder
+    skill-seekers package output/steam-inventory/
+    skill-seekers package output/react/
+    skill-seekers package output/react/ --no-open  # Don't open folder
 """
 
 import os
@@ -96,13 +96,13 @@ def main():
         epilog="""
 Examples:
   # Package skill and open folder
-  python3 cli/package_skill.py output/react/
+  skill-seekers package output/react/
 
   # Package skill without opening folder
-  python3 cli/package_skill.py output/react/ --no-open
+  skill-seekers package output/react/ --no-open
 
   # Get help
-  python3 cli/package_skill.py --help
+  skill-seekers package --help
         """
     )