* feat(talk): emit realtime models and voices in talk.catalog and mirror create-time readiness
* feat(ui): add curated Talk settings page with catalog-driven pickers
* docs(talk): correct stale claims and add one-page GPT-Live setup path
* fix(ui): refresh Talk catalog on config-hash advance and neutralize GPT-Live badge
* fix(ui): provider-aware Talk selection, atomic provider switch, focus refresh
* fix(ui): resolve Talk provider fallbacks via catalog and make Default a true reset
* fix(ui): provider-compatible transports and race-free Talk catalog loads
* fix(ui): never resolve an unknown explicit Talk provider to the active one
* docs(talk): note Android relay readiness caveat for browser-only models
* fix(ui): keep the relay transport when switching Talk provider to Auto
* fix(ui): align section-ownership test and drop unused export after rebase
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