feat(providers): add MiMo V2.6 Pro and Flash to the Xiaomi Token Plan catalog

[kang-heewon]

Summary

• Add mimo-v2.6-pro and mimo-v2.6-flash to the xiaomi-mimo-token-plan (mimotp) catalog with Xiaomi's published limits: 1,048,576 context, 131,072 max output.
• Xiaomi's Token Plan now serves the V2.6 pair and retires mimo-v2.5-pro / mimo-v2.5 at 2026-10-21 10:00 (Beijing time) (Token Plan models). Until now the catalog listed only the V2.5 pair, so the new models were missing from /v1/models and the dashboard model picker.
• The V2.5 entries stay in place until Xiaomi retires them.
• Vision already works for both IDs through the shared mimo-v2.6-pro / mimo-v2.6-flash vision fragments from fix(capabilities): resolve the MiMo v2.6 family as vision-capable (#14587) #14595, so this PR changes no capability logic.

Related Issues

• Related to fix(api): vision-capable models absent from every capability source resolve text-only everywhere — no override, and no way to identify a combo's blocking member #14587

Validation

• Change type: provider
• Focused tests and category gates from the golden path
  • node --import tsx/esm --test tests/unit/xiaomi-providers-registry.test.ts tests/unit/xiaomi-token-plan-regions.test.ts tests/unit/14587-mimo-v2-6-vision.test.ts tests/unit/xiaomi-mimo-token-plan-dispatcher-probe.test.ts: 48 passed, 0 failed
  • Every unit test that references xiaomi, mimo or CHAT_OPENAI_COMPAT_MODELS, plus models-catalog-* (1,413 tests): all pass under the node runner, except the two vitest-only tests/unit/autoCombo/* files, which fail the same way on the base commit. test:scoped flags shared.ts as a hub file, so the full suite is left to CI.
  • bun scripts/check/check-provider-consistency.ts: OK
  • npm run check:provider-assets: passed
  • tests/unit/provider-translate-path-golden.test.ts: the only local diff is the host OS in the Copilot user-agent (darwin vs linux); no xiaomi-mimo-token-plan entry changed
  • gen:provider-reference: the generated reference does not list per-provider models, so it has no catalog diff
• eslint with the repo suppressions on the changed files: clean
• Based on the current release/v3.8.52 tip
• Production-code changes include an updated automated test in this PR

Live check against a real Token Plan key (Singapore cluster), through OmniRoute:

Request	mimotp/mimo-v2.6-flash	mimotp/mimo-v2.6-pro
Chat, streaming, thinking disabled	200	200
Chat, non-streaming	200	—
Image input (solid red PNG → "Red")	200	200
Tool call (get_weather)	200, tool call emitted	200, tool call emitted
Thinking enabled	200, reasoning_content streamed	—

Tests Added Or Updated

• tests/unit/xiaomi-providers-registry.test.ts: asserts that the Token Plan catalog exposes both V2.6 IDs with a 1M context and 128K output.

Coverage Notes

• The production change is two static catalog entries in open-sse/config/providers/shared.ts. The updated registry test covers them directly.

Reviewer Notes

• Only the Token Plan catalog changes. The pay-as-you-go xiaomi-mimo catalog was left alone because it could not be verified live here.

[Copilot]

Copilot was unable to review this pull request because the user who requested the review has reached their quota limit.

[diegosouzapw]

Thanks @kang-heewon — merged into release/v3.8.52; it ships in the next release.