The model mapping dropdown (used by Claude Desktop, Codex, and OpenCode
provider forms) lists every fetched model grouped by vendor with no way
to filter. Providers with hundreds of models make the right model hard
to find, as requested in #6275.
Convert ModelDropdown from a plain DropdownMenu to a Popover + Command
combobox (the existing OmoFormFields pattern), adding a fuzzy search
input powered by cmdk:
- non-matching groups auto-hide; an empty state shows when nothing matches
- vendor name is indexed as a keyword, so models can be matched by vendor
as well as by model id
- the { models, onSelect } API is unchanged, so all 5 call sites work as-is
Consolidate two near-identical inline copies of the same grouped
dropdown (ModelInputWithFetch and the Copilot branch in ClaudeFormFields)
onto ModelDropdown so every model picker gains the search and the
duplication is removed.
Add searchModelPlaceholder / searchModelEmpty / searchModelAriaLabel i18n
keys for en, zh, zh-TW, ja.
Thefool