fix(codex): accept Codex 0.150 account plans

[gsimone]

Codex 0.150.1 can return new account plan types such as self_serve_business_prolite. The provider probe rejected those account/read responses during payload decoding, which made an installed and authenticated Codex provider appear broken.

Extend the existing Codex 0.150 compatibility schemas with the complete current plan type set, regenerate the affected schemas, and map the new Business, Enterprise, and Edu variants to their existing subscription labels. Add regression coverage for decoding each new plan type.

Tests:

• vp test run packages/effect-codex-app-server/src/schema.test.ts
• vp test run apps/server/src/provider/Layers/CodexProvider.test.ts
• vp run --filter effect-codex-app-server typecheck
• vp run --filter t3 typecheck
• targeted lint and format checks

Model: gpt-5.6-sol. Harness: pi (openai-codex).

Note

Accept Codex 0.150 account plan types in CodexProvider and PlanType schema

• Adds new plan type values (self_serve_business_prolite, self_serve_business_usage_based, business, ent26, enterprise_cbp_automation, edu_plus, edu_pro) to the PlanType enum in the generated Codex 0.150 schema and its generator script
• Updates codexAccountAuthLabel in CodexProvider.ts to map these new plan types to the correct subscription labels (Business, Enterprise, Edu)\n- Adds a test verifying V2GetAccountResponse accepts the new plan types
• Behavioral Change: accounts with previously unmapped plan types now return a defined label instead of undefined

^{Macroscope summarized 2821f32.}

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[macroscopeapp]

Approvability

Verdict: Approved at 2821f32

Macroscope's review found this PR approvable — This is a small, backward-compatible Codex 0.150 compatibility fix that accepts new account plan values and maps them to existing labels. Its runtime effect is limited to preventing valid authenticated provider probes from failing schema decoding, with focused regression coverage.

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