fix(cli): add oracle agent config when --chatgpt=yes is passed

[G-hoon]

Summary

Fix installer not adding Oracle agent to oh-my-opencode.json when --chatgpt=yes is passed.

Problem

When running the installer with --chatgpt=yes, the Oracle agent was not added to the config, even though the installer summary showed Oracle → gpt-5.2.

Before: Oracle was only added to config when hasChatGPT=false (for fallback models)
After: Oracle is always explicitly configured with the appropriate model

Changes

• src/cli/config-manager.ts: Add oracle agent config when hasChatGPT=true with model openai/gpt-5.2
• src/cli/config-manager.test.ts: Add comprehensive tests for oracle agent configuration

Oracle Model by Configuration

Configuration	Oracle Model
--chatgpt=yes	openai/gpt-5.2
--copilot=yes (no ChatGPT)	github-copilot/gpt-5.2
--claude=yes (no ChatGPT/Copilot)	anthropic/claude-opus-4-5
No providers	opencode/glm-4.7-free

Testing

bun test src/cli/config-manager.test.ts

All 23 tests pass (18 existing + 5 new oracle tests).

Fixes #877

---

Summary by cubic

Fixes the installer so the Oracle agent is added to oh-my-opencode.json when --chatgpt=yes. Oracle is now always configured with the correct model, and Copilot-only installs are detected correctly to prevent overwriting on reinstall.

• Bug Fixes
  • Always configure oracle when hasChatGPT=true with model openai/gpt-5.2.
  • Keep fallbacks when ChatGPT is unavailable: github-copilot/gpt-5.2, anthropic/claude-opus-4-5, or opencode/glm-4.7-free.
  • Detect github-copilot oracle model so reinstall doesn't overwrite with openai/gpt-5.2.
  • Added tests to verify oracle presence and model selection across configurations.

^{Written for commit f2ad430. Summary will update on new commits.}

[G-hoon]

I have read the CLA Document and I hereby sign the CLA

[cubic-dev-ai]

1 issue found across 2 files

Confidence score: 3/5

• Config detection in src/cli/config-manager.ts treats Copilot-only configs as hasChatGPT=true, so reinstall can overwrite the oracle with openai/gpt-5.2 and break non-ChatGPT installs.
• This is a concrete user-impacting risk (severity 7/10), so merge confidence is moderate despite being localized.
• Pay close attention to src/cli/config-manager.ts - reinstall logic may overwrite non-ChatGPT config.

Prompt for AI agents (all issues)

Check if these issues are valid — if so, understand the root cause of each and fix them.


<file name="src/cli/config-manager.ts">

<violation number="1" location="src/cli/config-manager.ts:336">
P1: Copilot-only configs are detected as `hasChatGPT=true`, so reinstall overwrites the oracle with `openai/gpt-5.2`, breaking non-ChatGPT installs.</violation>
</file>

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

[G-hoon]

Thanks @cubic-dev-ai for catching this!

Fixed in f2ad430: Added check for github-copilot/ prefix in detectCurrentConfig() so Copilot-only configs are correctly detected as hasChatGPT=false.

Please re-review.

[cubic-dev-ai]

Thanks @cubic-dev-ai for catching this!

Fixed in f2ad430: Added check for github-copilot/ prefix in detectCurrentConfig() so Copilot-only configs are correctly detected as hasChatGPT=false.

Please re-review.

@G-hoon I have started the AI code review. It will take a few minutes to complete.

[cubic-dev-ai]

No issues found across 2 files

Confidence score: 5/5

• Automated review surfaced no issues in the provided summaries.
• No files require special attention.