Shipped API v1 and started multi-seat work

Today was a big push on shipping. We launched V1 of the API — it's read-only and simple, but stable. You can read profiles, specific analyses, and analysis summaries. I also added comparisons with more data export options, and each user can now generate an executive summary for any report. We touched up some UI on profiles and workspace pages. Along the way, we fixed a bunch of bugs: UI glitches, text inconsistencies, style issues, and background agent coordination problems. Most are resolved now.

I also started exploring multi-seat management. Right now only one user has access, but I think we'll have the feature enabled and working by tomorrow. It's going to be exciting and should put us in a much better spot for team usage.