fix(orchestrate): show the Fast switch for every model whose catalog offers fast mode - #326
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…offers fast mode
Claude: the built-in catalog declared fastMode on Opus 4.7/4.6/4.5, which
Claude Code no longer supports (fast mode is Opus 5 and Opus 4.8 only);
it is now declared on exactly those two.
Codex: model/list advertises the fast tier as serviceTiers
[{id: "priority", name: "Fast"}], so the catalog's serviceTier select
never had a choice whose value is literally "fast" and no Codex row ever
showed the switch. The capability check now also accepts a tier labelled
Fast. The Orchestrate panel also observes the Providers topic so rows
re-render once the catalogs finish loading.
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Problem
In Settings → Orchestrate the Fast switch appeared only on some rows.
Two causes:
built_in_modelsdeclaredfastModeon Opus 4.7, 4.6 and 4.5. Claude Code's fast mode is supported on Opus 5 and Opus 4.8 only (4.7 support was removed on 2026‑07‑24; Sonnet and Haiku never had it).model/listadvertises the fast tier asserviceTiers: [{id: "priority", name: "Fast", …}](plusadditionalSpeedTiers: ["fast"], which the catalog mapper drops whenserviceTiersis non-empty). The switch predicate only accepted a choice whose value is literallyfast, so gpt‑5.6‑sol and gpt‑6‑astra never showed it.Reproduced with a copy of the reporter's settings in a throwaway data dir and the raw
model/listoutput fromcodex app-server.Fix
crates/agent/src/claude.rs:fastModeon exactlyclaude-opus-5andclaude-opus-4-8; a test pins that list.crates/ui/src/orchestrate_settings.rs: capability check extracted to a puremodel_fast_supported, which also accepts aserviceTierchoice labelled "Fast"; the panel now re-renders on the Providers topic so rows update once catalogs finish loading. Test covers the realpriority/Fastdescriptor shape.docs/DESIGN.md: visual contract for the Fast switch.With the reporter's fleet the switch now shows on gpt‑5.6‑sol (both efforts), gpt‑6‑astra (both efforts), claude‑opus‑5 and claude‑opus‑4‑8, and not on claude‑sonnet‑5 or claude‑fable‑5.
cargo fmt --all --check,cargo clippy --workspace --all-targets -- -D warnings,cargo build,cargo test --workspacepass locally.