chore: release version 1.0.0

- Add CHANGELOG.md documenting complete architectural rebuild
- Bump version to 1.0.0 (breaking changes from wrapper pattern)
- Complete Sprint 02: Corrective Rebuild

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

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "gitea-mcp-remote"
-version = "0.1.0"
+version = "1.0.0"
 description = "HTTP transport wrapper for Gitea MCP server"
 readme = "README.md"
 requires-python = ">=3.10"