v0.12.2

Fixed

• tweet category removed - The Exa API now rejects category: "tweet" with a hard error, so exa-ai search and exa-ai find-similar no longer accept or advertise it. Valid categories are: company, publication, news, github, personal site, people, financial report

Changed

• --output-schema note in help text - deep and deep-reasoning searches no longer auto-synthesize the output field; the API returns it only when an output schema is supplied. The --type and --output-schema help now say so
• Shared category list - exa-ai find-similar references Exa::CLI::SearchParser::VALID_CATEGORIES instead of keeping a hand-synced copy