Release v3.9.1

What's Changed

• Give the folded run detail a stop control by @olartgabo in #5336
• Document Cancel run button in Evals tab action row by @mintlify[bot] in #5393
• Point the multi-account verify script at the email lab by @chelojimenez in #5382
• Drop the multi-account verify script, which needs a lab we do not ship by @chelojimenez in #5394
• Show a tool's annotations and _meta next to its Run button by @chelojimenez in #5395
• Pause the MCP Apps widgets behind one constant by @chelojimenez in #5399
• Offer Delete on a CI-owned eval suite by @chelojimenez in #5398
• Enhance onboarding experience with fixes and new features by @ozboms in #4962
• Pull request for mintlify/docs-update-pr-4962-1790041353976 by @mintlify[bot] in #5402
• fix(errors): classify bare/wrapped 401s and repair stale docs anchors by @devin-ai-integration[bot] in #5401
• Open Insights flow selections in the Evaluate inspect sheet by @chelojimenez in #5284
• Author the dogfood eval suite for our own MCP server by @chelojimenez in #5405
• Let the findings summary use the card instead of a display column by @chelojimenez in #5412
• Bring the stage rail back to the iteration scorecard by @chelojimenez in #5410
• Docs: update user-value chain scorecard layout description by @mintlify[bot] in #5415
• Take eval servers from the group alone, and stop 500ing when there is none by @chelojimenez in #5409
• Docs: clarify eval server selection from environment group by @mintlify[bot] in #5417
• Name the injected account selector link_id, as ChatGPT names it by @chelojimenez in #5419
• Docs: rename account selector to link_id by @mintlify[bot] in #5420
• Move thirteen planning docs out of the public repo by @chelojimenez in #5422
• Session flow: a customer question is a column, not a chip (Q2) by @chelojimenez in #5416
• Report a rotated OAuth refresh token to the caller by @chelojimenez in #5407
• Call the account selector link_id in the two tests that still said account by @chelojimenez in #5424

Full Changelog: v3.9.0...v3.9.1