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/unified_scraper.py

@@ -8,8 +8,8 @@ detects conflicts, merges intelligently, and builds unified skills.
 This is the main entry point for unified config workflow.
 
 Usage:
-    python3 cli/unified_scraper.py --config configs/godot_unified.json
-    python3 cli/unified_scraper.py --config configs/react_unified.json --merge-mode claude-enhanced
+    skill-seekers unified --config configs/godot_unified.json
+    skill-seekers unified --config configs/react_unified.json --merge-mode claude-enhanced
 """
 
 import os
@@ -422,13 +422,13 @@ def main():
         epilog="""
 Examples:
   # Basic usage with unified config
-  python3 cli/unified_scraper.py --config configs/godot_unified.json
+  skill-seekers unified --config configs/godot_unified.json
 
   # Override merge mode
-  python3 cli/unified_scraper.py --config configs/react_unified.json --merge-mode claude-enhanced
+  skill-seekers unified --config configs/react_unified.json --merge-mode claude-enhanced
 
   # Backward compatible with legacy configs
-  python3 cli/unified_scraper.py --config configs/react.json
+  skill-seekers unified --config configs/react.json
         """
     )