v1.15.6: OpenAI OAuth login menu still missing — regression from 1.14.49 (follow-up to #27905)

[willowite]

Description

The native OpenAI OAuth flow (ChatGPT Plus/Pro browser/headless login) regressed in 1.14.49+ and is still broken on v1.15.6. Running opencode auth login → OpenAI now shows only "Manually enter API Key", omitting the (browser) / (headless) options that worked in 1.14.48.

This is a follow-up to #27905 (still open, contains full root-cause analysis). Filed separately because v1.15.6 was released on 2026-05-20 and does not address the regression.

Diff analysis 1.15.5 → 1.15.6 (gh api compare/v1.15.5...v1.15.6):

Files touched containing the string "auth":

• packages/console/app/src/routes/auth/[...callback].ts — web console login, unrelated
• packages/console/function/src/auth.ts — web console, unrelated
• packages/opencode/src/server/routes/instance/httpapi/middleware/authorization.ts — internal HTTP API headers, unrelated
• packages/opencode/test/server/httpapi-authorization.test.ts — test for above
• packages/opencode/test/fixtures/recordings/session/native-openai-tool-call.json — removed fixture

Files NOT touched (which is where the regression lives per #27905 RCA):

• packages/core/src/auth.ts — AuthV2.layer, migrate(), OAuthCredential / Account Schema.Class
• packages/core/src/plugin/auth.ts — bridge AuthV2.Service → provider.options.aisdk.provider.apiKey
• packages/core/src/provider/openai.ts — OpenAI provider, no OAuth declarations

Two commits sound auth-related but are not:

• 6618e2b feat(native-llm): route Anthropic API-key models through native runtime — Anthropic only, not OpenAI
• 8a321c4 fix(native-llm): prefer console opencode token — OpenCode console (zen) token, not ChatGPT OAuth

Scope confirmed in #27905: reproduces with minimal config (single provider, zero plugins) on both CLI and Desktop builds. Workarounds that failed: third-party opencode-openai-codex-auth plugin, manual auth-v2.json construction, copying ~/.codex/auth.json, isolated minimal config, full reinstall. Workarounds that work: pin to 1.14.48, or use plain API key.

Plugins

None (reproduces with zero plugins on a minimal config)

OpenCode version

1.15.6 (also reproduces on 1.14.49 through 1.15.5; works on 1.14.48)

Steps to reproduce

1. Install opencode 1.15.6 (scoop install opencode or any installer)
2. Ensure no provider OAuth tokens exist: remove ~/.local/share/opencode/auth.json and ~/.local/share/opencode/auth-v2.json
3. Run opencode auth login
4. Select OpenAI from the provider list
5. Observed: only Manually enter API Key is presented
6. Expected (1.14.48 behavior):

   Login to OpenAI
     ❯ ChatGPT Pro/Plus (browser)
       ChatGPT Pro/Plus (headless)
       Manually enter API Key
   

Screenshot and/or share link

N/A — interactive CLI menu output cannot be /share-d. Full evidence (telemetry logs, auth.json shape comparison, AuthV2.layer non-activation findings) is in #27905.

Operating System

Windows 11 (build 26200)

Terminal

Windows Terminal (PowerShell 7)

[github-actions]

This issue might be a duplicate of existing issues. Please check:

• Regression: OpenAI ChatGPT Plus/Pro OAuth methods missing from auth login menu since 1.14.49 (1.14.48 works, 1.14.50+ broken) #27905: Same regression — OpenAI OAuth methods (browser/headless) missing from auth login menu since v1.14.49, filed by the same author with a full root-cause analysis. Since that issue is still open and tracks the same bug, please continue the discussion there rather than filing a separate follow-up.
• OpenAI Auth - ChatGPT Subscription option not available to use #18582: Earlier report of the same symptom (ChatGPT subscription option not available in auth menu).

If this issue captures something distinct from #27905 (e.g., a specific v1.15.6 change that needs tracking separately), please clarify that in a comment on this issue.

[willowite]

Closing in favour of consolidating discussion in #27905, per the duplicate-detection bot's recommendation. Posted the full v1.15.7 diff analysis there: #27905 (comment)