Why was the per-model provider mapping removed from the OpenCode Go page, and can it be restored? #39854

Context

• Until 2026-07-16, opencode.ai/go displayed each Go model's provider source.
  For example, GLM-5.2 was listed as "DeepInfra, Fireworks AI, Z.ai" and
  DeepSeek V4 Flash as "DeepSeek".
• The mapping was hardcoded in packages/console/app/src/routes/go/index.tsx
  as models = [{ name, provider }] and was removed by commit 5121352
  ("go: grok 4.5 and kimi k3", 2026-07-16). The page now shows model names
  and request limits only.
• The public API https://opencode.ai/zen/go/v1/models also returns model IDs
  without any provider field, and the Go docs page only lists models + endpoints.

Specific questions

1. Was removing the provider column intentional? If so, why?
2. Do Go models actually route through the providers that were previously
   listed (e.g. DeepInfra / Fireworks AI / Z.AI for GLM-5.2), or are all Go
   requests now served by one internal gateway? If they are still served by
   those upstreams, why hide them?
3. V2 TUI: simplify provider labels in prompt and model picker #36270 (V2 TUI) notes subscription models do not expose their backing
   provider as structured metadata and suggests adding an
   upstreamProviderID field. Is this planned?
4. Will provider information be restored on the website, in
   /zen/go/v1/models, and in the TUI model picker?

Environment

• OpenCode version: 1.18.9
• OS: Windows 11
• Terminal: Windows Terminal

References

• Commit that removed the mapping:
  5121352
• Source file:
  https://github.com/anomalyco/opencode/blob/dev/packages/console/app/src/routes/go/index.tsx
• V2 TUI: simplify provider labels in prompt and model picker #36270 maintainer comment about missing backing-provider metadata
• [Bug] Model provider not restored correctly when switching projects, and missing provider display in UI #34562 provider display/restore bug
• Why was the per-model provider mapping removed from the OpenCode Go page, and can it be restored? #39854 previous issue (this one replaces it)