Release v2.9.1

What's Changed

• evals: pastel sweep — surface /50, foreground full-token by @chelojimenez in #2374
• evals: matchOptions superset/bounded extras + predicate authoring + override badges + arg placeholder picker (inspector) by @chelojimenez in #2371
• ui: move Compare into Connect tabs + deep-link hosts + eval Compare button by @chelojimenez in #2375
• evals: split CI gating into new evaluate-ci flag, flatten Evaluate sidebar by @chelojimenez in #2376
• evals: surface added-servers in chat-import toasts by @chelojimenez in #2378
• Eval UI Polish by @chelojimenez in #2379

Full Changelog: v2.9.0...v2.9.1