feat(llm): add built-in Ollama Cloud provider preset

[chethanuk]

User description

Description

Adds a built-in ollama-cloud provider preset to the registry in internal/llm/providers.go, so Ollama Cloud can be selected directly instead of hand-configured as a custom provider.

The preset uses the OpenAI-compatible protocol against https://ollama.com/v1, reading the API key from OLLAMA_API_KEY (sent as Authorization: Bearer <key>, the shared default for OpenAI-protocol entries — no per-provider AuthHeader). It ships two models, gpt-oss:120b and gpt-oss:20b. The base URL, env var, and model naming match Ollama Cloud's documented OpenAI-compatible endpoint.

Opened against my own fork first as a staging/review step.

Type of Change

• Bug fix (non-breaking change that fixes an issue)
• New feature (non-breaking change that adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Refactoring (no functional changes)
• Documentation update
• CI / Build / Tooling

How Has This Been Tested?

gofmt -l reports no diffs, go vet ./internal/llm/ is clean, and go test ./internal/llm/ passes (176 tests). Coverage includes the existing TestListProviders_Order (updated for the new sorted position) and a new TestLookupProvider_OllamaCloudDetails that pins Protocol, BaseURL, EnvVar, empty AuthHeader, and each model name individually.

Whether Ollama Cloud's OpenAI endpoint reliably supports the tool-calls flow that ocr review needs is a runtime/e2e concern, out of scope for this preset addition.

• make test passes locally
• Manual testing (describe below)

Checklist

• My code follows the project's coding style (go fmt, go vet)
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or my feature works
• New and existing unit tests pass locally with my changes
• I have updated the documentation accordingly (if applicable)
• I have signed the CLA

Related Issues

Closes alibaba#305

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CodeAnt-AI Description

Add Ollama Cloud as a built-in LLM provider

What Changed

• Added Ollama Cloud as a selectable provider instead of requiring a custom setup
• The new provider uses Ollama Cloud’s OpenAI-compatible endpoint and reads the API key from OLLAMA_API_KEY
• Included the two Ollama Cloud models: gpt-oss:120b and gpt-oss:20b
• Updated tests to cover the new provider in the provider list and verify its connection details and model names

Impact

✅ Easier Ollama Cloud setup
✅ Fewer custom provider configurations
✅ Clearer provider selection for Ollama Cloud users

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Summary by CodeRabbit

• New Features

  • Added built-in support for the Ollama Cloud provider.
  • Added access to the gpt-oss:120b and gpt-oss:20b models through Ollama Cloud.

• Tests

  • Added coverage validating Ollama Cloud discovery, configuration, and model availability.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch fix/issue-305-ollama-cloud-provider

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Code Review

This pull request adds support for a new LLM provider, 'ollama-cloud', to the registry, including its configuration details and supported models. It also updates the provider list order test and adds a new unit test to verify the 'ollama-cloud' provider details. There are no review comments, and the changes look correct, so I have no feedback to provide.

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Greptile Summary

Adds an ollama-cloud preset to the built-in provider registry, using the OpenAI-compatible protocol against https://ollama.com/v1 with OLLAMA_API_KEY, and updates tests to reflect the new total provider count and sorted position.

• internal/llm/providers.go: New ollama-cloud entry appended to registry with two models (gpt-oss:120b, gpt-oss:20b); all existing struct fields (Protocol, BaseURL, EnvVar, AuthHeader) follow the same pattern as other OpenAI-compatible providers.
• internal/llm/providers_test.go: TestListProviders_Order updated to include ollama-cloud in the alphabetically-sorted expectation list; new TestLookupProvider_OllamaCloudDetails validates all fields and both model names individually, matching the established coverage pattern.

Confidence Score: 5/5

Safe to merge — the change is a pure registry addition with no behavioural changes to existing providers or shared logic.

The diff touches only two files: a new struct literal appended to a static slice and its corresponding tests. No shared code paths, authentication logic, or data-handling routines are modified. The new test covers all provider fields and verifies both model names by value, matching the coverage pattern of TestLookupProvider_PreservesModelOrder for anthropic.

No files require special attention.

Important Files Changed

Filename	Overview
internal/llm/providers.go	New ollama-cloud provider block added with correct protocol, base URL, env var, and two models; follows established struct conventions exactly.
internal/llm/providers_test.go	Order assertion updated to include ollama-cloud; new detail test covers Protocol, BaseURL, EnvVar, AuthHeader, and each model name individually — consistent with the existing pattern.

Flowchart

%%{init: {'theme': 'neutral'}}%%
flowchart TD
    A[User selects provider] --> B{LookupProvider}
    B -->|"ollama-cloud"| C[ollama-cloud entry\nProtocol: openai\nBaseURL: https://ollama.com/v1\nEnvVar: OLLAMA_API_KEY]
    C --> D{Model chosen}
    D --> E["gpt-oss:120b"]
    D --> F["gpt-oss:20b"]
    E --> G[OpenAI-compatible request\nAuthorization: Bearer OLLAMA_API_KEY]
    F --> G

Loading

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flowchart TD
    A[User selects provider] --> B{LookupProvider}
    B -->|"ollama-cloud"| C[ollama-cloud entry\nProtocol: openai\nBaseURL: https://ollama.com/v1\nEnvVar: OLLAMA_API_KEY]
    C --> D{Model chosen}
    D --> E["gpt-oss:120b"]
    D --> F["gpt-oss:20b"]
    E --> G[OpenAI-compatible request\nAuthorization: Bearer OLLAMA_API_KEY]
    F --> G

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