chore: Bump version to v2.5.1 - Critical PyPI Bug Fix

Version Updates:
- pyproject.toml: 2.5.0 → 2.5.1
- src/skill_seekers/__init__.py: 2.0.0 → 2.5.1
- src/skill_seekers/cli/__init__.py: 2.0.0 → 2.5.1
- src/skill_seekers/cli/main.py: 2.4.0 → 2.5.1
- src/skill_seekers/mcp/__init__.py: 2.4.0 → 2.5.1
- src/skill_seekers/mcp/tools/__init__.py: 2.4.0 → 2.5.1

CHANGELOG:
- Added v2.5.1 release notes documenting PR #221 fix
- Critical: Fixed missing skill_seekers.cli.adaptors package
- Impact: Restores all multi-platform features for PyPI users

Documentation:
- Updated CLAUDE.md to v2.5.0 with multi-platform details
- Added platform adaptor architecture documentation
- Updated test architecture and environment variables

Related: PR #221 (merged), Issue #222 (py.typed follow-up)

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

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

src/skill_seekers/cli/__init__.py

@@ -28,7 +28,7 @@ except ImportError:
     open_folder = None
     read_reference_files = None
 
-__version__ = "2.0.0"
+__version__ = "2.5.1"
 
 __all__ = [
     "LlmsTxtDetector",

src/skill_seekers/cli/main.py

@@ -62,7 +62,7 @@ For more information: https://github.com/yusufkaraaslan/Skill_Seekers
     parser.add_argument(
         "--version",
         action="version",
-        version="%(prog)s 2.4.0"
+        version="%(prog)s 2.5.1"
     )
 
     subparsers = parser.add_subparsers(