Run audit AI insights locally on desktop

On desktop, platform admins can now point Audit AI Insights at a locally running Codex account instead of SharpOS's shared AI service. Reports show which provider and model ran the job along with token usage, and you can stop or rerun an in-progress insight cleanly. Nothing changes for audits run from the web app: those still use SharpOS's managed AI, same as before.

We also fixed a batch of everyday interaction bugs: browser tabs that had sat idle now recover properly instead of getting stuck, locked hub cards no longer dead-end, dragging pages and boards in the sidebar works correctly again, and editor overlays like comments and the slash menu position themselves where they should.