Add integration tests with real RSS feeds

[guglielmo]

Description

Create integration tests using real-world RSS feeds to validate end-to-end functionality and ensure compatibility with common feed formats.

Tasks

• Create tests/integration/test_rss_integration.py
• Test with real Hacker News RSS feed
• Test with real blog feed (WordPress/Ghost)
• Test with YouTube channel RSS
• Test with Reddit subreddit RSS
• Test mixed source list (HTML + RSS)
• Verify token usage (RSS should use 0 Jina tokens)
• Test content diff with RSS feeds
• Test full sync workflow with RSS sources

Test Feeds

Use these well-known, stable feeds:

• Hacker News: https://news.ycombinator.com/rss
• Lobsters: https://lobste.rs/rss
• Python Blog: https://blog.python.org/feeds/posts/default

Acceptance Criteria

• All integration tests pass
• RSS feeds fetch successfully
• Content is properly stored
• No Jina tokens consumed for RSS feeds
• Sync progress updates correctly
• Mixed HTML/RSS sources work together

Performance Validation

• RSS feed fetch <2 seconds
• Markdown conversion <100ms
• Memory usage reasonable for 100+ entries

Estimate

Effort: 2 hours
Start Date: 2025-11-17
End Date: 2025-11-17

Dependencies

• Blocked by: Add unit tests for RSS functionality #20 "Add unit tests for RSS functionality"

Related

Part of RSS Integration (Hybrid Approach) - Phase 3: Testing & Polish