Reorganize codebase: separate server architecture from business logic

- Created feed_parser.py module with YouTubeFeedParser and FeedEntry classes
- Refactored main.py to focus on Flask routing with two endpoints:
  - GET / for homepage
  - GET /api/feed for REST API with query parameters
- Updated CLAUDE.md with new architecture documentation
- Implemented clean separation between core logic and web server layers

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

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

pyproject.toml

@@ -0,0 +1,10 @@
+[project]
+name = "yottob"
+version = "0.1.0"
+description = "Add your description here"
+readme = "README.md"
+requires-python = ">=3.14"
+dependencies = [
+    "feedparser>=6.0.12",
+    "flask>=3.1.2",
+]