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/enhance_skill_local.py

@@ -5,8 +5,8 @@ Opens a new terminal with Claude Code to enhance SKILL.md, then reports back.
 No API key needed - uses your existing Claude Code Max plan!
 
 Usage:
-    python3 cli/enhance_skill_local.py output/steam-inventory/
-    python3 cli/enhance_skill_local.py output/react/
+    skill-seekers enhance output/steam-inventory/
+    skill-seekers enhance output/react/
 
 Terminal Selection:
     The script automatically detects which terminal app to use:
@@ -277,18 +277,18 @@ rm {prompt_file}
         print("💡 When done:")
         print(f"  1. Check the enhanced SKILL.md: {self.skill_md_path}")
         print(f"  2. If you don't like it, restore: mv {self.skill_md_path.with_suffix('.md.backup')} {self.skill_md_path}")
-        print(f"  3. Package: python3 cli/package_skill.py {self.skill_dir}/")
+        print(f"  3. Package: skill-seekers package {self.skill_dir}/")
 
         return True
 
 
 def main():
     if len(sys.argv) < 2:
-        print("Usage: python3 cli/enhance_skill_local.py <skill_directory>")
+        print("Usage: skill-seekers enhance <skill_directory>")
         print()
         print("Examples:")
-        print("  python3 cli/enhance_skill_local.py output/steam-inventory/")
-        print("  python3 cli/enhance_skill_local.py output/react/")
+        print("  skill-seekers enhance output/steam-inventory/")
+        print("  skill-seekers enhance output/react/")
         sys.exit(1)
 
     skill_dir = sys.argv[1]