v0.8.67 Docs: sync provider/model docs with Xiaomi MiMo UltraSpeed and Token Plan

[Hmbown]

Problem

Code already exposes Xiaomi MiMo V2.5 options more completely than several docs surfaces do. The direct Xiaomi provider/model picker includes mimo-v2.5-pro, mimo-v2.5-pro-ultraspeed, and mimo-v2.5; /provider xiaomi-mimo ultraspeed and pro-ultraspeed expand to mimo-v2.5-pro-ultraspeed.

Some docs still lag behind that behavior, which makes setup feel unreliable when a user asks whether UltraSpeed exists.

Stale or incomplete surfaces found

• config.example.toml: the global model examples and [providers.xiaomi_mimo] section list mimo-v2.5-pro and mimo-v2.5, but omit mimo-v2.5-pro-ultraspeed in at least the direct-provider chat list.
• config.example.toml: Xiaomi credential comments should mention Token Plan env vars and mode values consistently, not only the generic API key/model path.
• docs/CONFIGURATION.md: the provider/model reference says direct Xiaomi recognizes mimo-v2.5-pro and mimo-v2.5, but omits mimo-v2.5-pro-ultraspeed.
• docs/CONFIGURATION.md: Xiaomi Token Plan region docs mention China explicitly, but code supports Singapore default, China, and Amsterdam modes.
• web/scripts/facts-lib.mjs, web/lib/facts-drift.ts, and generated web facts list Xiaomi env vars without the Token Plan key names.
• docs/rfcs/HARNESS_PROFILE_CUTLINE.md still says Xiaomi MiMo V2.5 Pro / Flash; use current V2.5 naming or mark it historical.

Acceptance criteria

• Docs list direct Xiaomi chat IDs: mimo-v2.5-pro, mimo-v2.5-pro-ultraspeed, and mimo-v2.5.
• Docs list speech IDs separately and do not promote them as normal chat defaults.
• /provider xiaomi-mimo ultraspeed and pro-ultraspeed are documented where shorthand examples are shown.
• Token Plan key names and modes are documented consistently: Singapore default, China, Amsterdam, and pay-as-you-go.
• Web provider facts/env tables include Token Plan env vars or intentionally explain why they are omitted.
• Deprecated V2 names such as mimo-v2-flash are not promoted as current setup choices.

Related

• Provider/model setup: v0.8.67 Setup support: provider/model readiness card for constitution-first setup #3405
• Docs parent: v0.8.67 Docs: constitution-first setup, localization, screenshots, and copy #3412
• Xiaomi evidence: docs/evidence/xiaomi-mimo-2026-06-23/