Add OpenCode usage to Claude cost tracking

[armanarutiunov]

Problem (by author)

When using OpenCode with the Anthropic provider (Claude Pro/Max), the cost is not being contributed towards total calculation in the CodexBar app when Claude is used as a provider in settings.

The reason is that we're only calculating the cost from Claude Code usage and not taking into account that Claude Code can be used from 3rd party clients such as OpenCode.

This PR only solves this specific issue when OpenCode usage is not calculated towards Claude Code cost. I would assume the same probably happens for users who are on Copilot/Codex/Cursor/etc subscriptions and using a tool like OpenCode as an interface.

Everything below is AI generated ⬇️

Summary

• Adds OpenCode message file parser to extract token usage from ~/.local/share/opencode/storage/message/
• Merges OpenCode usage into Claude provider's cost data (since OpenCode users consume their Claude Max subscription)
• Parser is provider-agnostic - returns providerID and filtering happens at call site

Changes

• CostUsageScanner+OpenCode.swift (new): Parses OpenCode message JSON files, normalizes model names to Claude pricing keys
• CostUsageScanner+Claude.swift: Calls OpenCode scanner when loading Claude daily report
• CostUsageScanner.swift: Added openCodeStorageRoot option for testability
• OpenCodeProviderDescriptor.swift: Updated message to indicate cost is included in Claude provider

Testing

• All 546 tests pass
• Verified CLI: codexbar cost --provider claude shows combined usage
• Verified app UI shows cost chart with OpenCode data

[chatgpt-codex-connector]

💡 Codex Review

Here are some automated review suggestions for this pull request.

Reviewed commit: 922cb2e2b8

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[chatgpt-codex-connector]

Codex Review: Didn't find any major issues. Keep it up!

ℹ️ About Codex in GitHub

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• Open a pull request for review
• Mark a draft as ready
• Comment "@codex review".

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When you sign up for Codex through ChatGPT, Codex can also answer questions or update the PR, like "@codex address that feedback".

[jeankvd]

Don't think this is even needed.

Its against TOS and Anthropic has been banning users of third party apps

You cannot use Claude Pro/Max with OpenCode currently (they just blocked it again)

[armanarutiunov]

Don't think this is even needed.

Its against TOS and Anthropic has been banning users of third party apps

You cannot use Claude Pro/Max with OpenCode currently (they just blocked it again)

Yeah they blocked it again literally a few hours after I opened this PR haha. Closing 🫡

[armanarutiunov]

@jeankvd looks like it's working again. do you think this PR makes sense now for those of us who's using opencode with their claude account?