⚡ Bolt: Optimize RSS config list query

[google-labs-jules]

💡 What: Excluded lastContent field from WebsiteRssService.getAllConfigs.
🎯 Why: The lastContent field stores the full RSS feed content, which can be very large. Fetching this for every item in the list view causes unnecessary memory pressure and slower response times.
📊 Impact: Significantly reduces the payload size of the /api/website-rss list endpoint, especially as the number of feeds and their content size grows.
🔬 Measurement: Verified by unit test ensuring findAll is called with the correct exclusion attributes.

---

PR created automatically by Jules for task 6997947218869472600 started by @fillpit

[google-labs-jules]

👋 Jules, reporting for duty! I'm here to lend a hand with this pull request.

When you start a review, I'll add a 👀 emoji to each comment to let you know I've read it. I'll focus on feedback directed at me and will do my best to stay out of conversations between you and other bots or reviewers to keep the noise down.

I'll push a commit with your requested changes shortly after. Please note there might be a delay between these steps, but rest assured I'm on the job!

For more direct control, you can switch me to Reactive Mode. When this mode is on, I will only act on comments where you specifically mention me with @jules. You can find this option in the Pull Request section of your global Jules UI settings. You can always switch back!

New to Jules? Learn more at jules.google/docs.

---

For security, I will only act on instructions from the user who triggered this task.