[chore] update supported CUA models

[chromiebot]

What Changed

Adds three new models to the list of supported CUA (Computer Use Agent) models:

• openai/gpt-5.4-mini
• openai/gpt-5.5
• anthropic/claude-haiku-4-5

---

Files Changed

packages/core/lib/v3/types/public/agent.ts

• Added the three models to the AVAILABLE_CUA_MODELS const array
• This drives:
  • The AvailableCuaModel type
  • The runtime CUA model check in resolveModel()

packages/core/lib/v3/agent/AgentProvider.ts

• Added model → provider mappings in modelToAgentProviderMap:
  • gpt-5.4-mini → openai
  • gpt-5.5 → openai
  • claude-haiku-4-5 → anthropic
• Ensures AgentProvider.getAgentProvider() resolves them correctly

packages/core/tests/unit/public-api/llm-and-agents.test.ts

• Updated the expectedModels list in the type-level test to stay in sync with the source of truth

---

How It Was Tested

• ✅ Build passes (pnpm turbo run build)
• ✅ All 204 public-api unit tests pass
• ✅ All 608 unit tests pass
• ⚠️ 4 pre-existing failures in flowlogger-eventstore.test.js (confirmed on base branch)

---

Summary by cubic

Adds support for three new Computer Use Agent (CUA) models and maps them to the correct providers for proper runtime resolution.

• New Features
  • Added openai/gpt-5.4-mini, openai/gpt-5.5, and anthropic/claude-haiku-4-5 to AVAILABLE_CUA_MODELS.
  • Mapped gpt-5.4-mini and gpt-5.5 to openai, and claude-haiku-4-5 to anthropic in modelToAgentProviderMap.
  • Updated public API tests to include the new models.

^{Written for commit 6905175. Summary will update on new commits. Review in cubic}

[changeset-bot]

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Latest commit: 6905175

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[github-actions]

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[cubic-dev-ai]

1 issue found across 3 files

Confidence score: 3/5

• There is a concrete regression risk in packages/core/lib/v3/agent/AgentProvider.ts: expanding a hardcoded LLM allowlist can cause valid runtime models to be rejected, which is user-facing behavior.
• The issue is medium severity (6/10) with fairly high confidence (8/10), so this looks like a meaningful correctness concern rather than a minor housekeeping note.
• Pay close attention to packages/core/lib/v3/agent/AgentProvider.ts - hardcoded model-name gating may violate the custom-agent rule and block supported models at runtime.

Prompt for AI agents (unresolved issues)

Check if these issues are valid — if so, understand the root cause of each and fix them. If appropriate, use sub-agents to investigate and fix each issue separately.


<file name="packages/core/lib/v3/agent/AgentProvider.ts">

<violation number="1" location="packages/core/lib/v3/agent/AgentProvider.ts:19">
P2: Custom agent: **Ensure we never check against hardcoded lists of allowed LLM model names**

Newly added model-name entries expand a hardcoded allowlist that is used for runtime model rejection, violating the rule requiring model-name-agnostic acceptance.</violation>
</file>

Architecture diagram

sequenceDiagram
    participant App as Application Code
    participant Resolve as resolveModel() (agent.ts)
    participant Provider as AgentProvider.ts
    participant Ext as LLM Provider (OpenAI/Anthropic)

    Note over App,Ext: Runtime Model Resolution & Provider Mapping

    App->>Resolve: Pass model identifier (e.g. "openai/gpt-5.5")
    
    rect rgb(240, 240, 240)
    Note over Resolve: Validation Layer
    Resolve->>Resolve: NEW: Validate against AVAILABLE_CUA_MODELS
    Note right of Resolve: Includes: gpt-5.4-mini, gpt-5.5,<br/>and claude-haiku-4-5
    end

    Resolve-->>App: Valid AvailableCuaModel

    App->>Provider: getAgentProvider(modelName)
    
    rect rgb(240, 240, 240)
    Note over Provider: Provider Routing Layer
    Provider->>Provider: NEW: Lookup in modelToAgentProviderMap
    Note right of Provider: Maps gpt-5.x -> "openai"<br/>Maps haiku-4-5 -> "anthropic"
    end

    Provider-->>App: Provider Implementation Instance

    App->>Ext: Dispatch CUA Request
    Ext-->>App: Action/Observation Result

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_{Reply with feedback, questions, or to request a fix. Tag @cubic-dev-ai to re-run a review.}