fix(composer): hide default Codex service tier

[maxktz]

What Changed

• Hide "Standard" from the web Codex composer label when it is the default service tier beside reasoning.

Why

fast makes sense but "standard" is redundant, it's default and obvious

UI Changes

Cap.2026-07-29.at.00.52.04.mp4

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for the UI change

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Note

Low Risk
Display-only logic in the traits trigger label with targeted unit tests; no API or persistence changes.

Overview
The Codex composer traits trigger no longer shows Standard when serviceTier is on the default option and reasoning (reasoningEffort) is also present—e.g. High instead of High · Standard. Non-default tiers (e.g. Fast) still appear in the label.

buildTraitsTriggerDisplay now takes provider and applies this skip only for codex. TraitsPicker passes provider through; tests use reasoningEffort and add coverage for the default tier case.

^{Reviewed by Cursor Bugbot for commit 0853caf. Bugbot is set up for automated code reviews on this repo. Configure here.}

Note

Hide default 'Standard' service tier label in Codex composer trigger

When the active provider is codex and the serviceTier select is set to its default option (id: 'default', isDefault: true), buildTraitsTriggerDisplay now skips adding the 'Standard' tier text to the trigger label. The label then reflects only the active reasoning effort (e.g. 'High'). All other providers and non-default tiers are unaffected.

^{Macroscope summarized 0853caf.}

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[macroscopeapp]

Approvability

Verdict: Approved

This PR makes a cosmetic UI change to hide the redundant "Standard" label for Codex's default service tier. The change only affects display text, not actual service tier selection or behavior, and includes test coverage.

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Dismissing prior approval to re-evaluate 0853caf