Celia Chen 604061ce51 Enable Ultrafast service tiers for Amazon Bedrock Astra models (#50472) ...

## Why

Bedrock catalogs cleared all service-tier metadata, and requests omitted every selected tier. This prevented users from selecting `ultrafast` or using tiers defined in custom catalogs.

## What changed

- Advertise `ultrafast` for `openai.gpt-6-astra` on Mantle and the `global.openai.gpt-6-astra` and `us.openai.gpt-6-astra` Runtime variants, while retaining the implicit default tier unless users select otherwise.
- Preserve custom catalog speed tiers, service-tier definitions, and defaults while continuing to normalize Bedrock web search compatibility.
- Send selected service tiers only when the Bedrock model advertises them, including `flex`.

## Testing

Add coverage for `model/list` tier discovery, custom catalog preservation, configured and per-turn HTTP request tiers, and TUI slash-command selection, toggling, and model switching.

GitOrigin-RevId: 4793e7af7b9f604a6b7812611030da6adb8acd35

2026-10-03 00:31:51 +00:00

..

src

Enable Ultrafast service tiers for Amazon Bedrock Astra models (#50472)

2026-10-03 00:31:51 +00:00

BUILD.bazel

feat: add opt-in provider runtime abstraction (#17713)

2026-04-17 02:27:45 +00:00

Cargo.toml

Use descriptor-safe helpers for executable test fixtures (#50018)

2026-10-01 15:57:03 +00:00