chore: bump version to 0.5.0

- refactor: split client.py into graphql.py + parser.py
- refactor: structured exception hierarchy (exceptions.py)
- feat: integration smoke tests
- docs: updated project structure

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "hatchling.build"
 
 [project]
 name = "twitter-cli"
-version = "0.4.6"
+version = "0.5.0"
 description = "A CLI for Twitter/X — feed, bookmarks, and user timeline in terminal"
 readme = "README.md"
 license = "Apache-2.0"