feat(opencode): show model provider quota in prompt metrics

[50sotero]

Issue for this PR

Closes #

Type of change

• Bug fix
• New feature
• Refactor / code improvement
• Documentation

What does this PR do?

Adds a prompt-metrics surface for model/provider quota information. This PR wires up Codex quota first: it reads the existing OpenAI OAuth session, fetches a best-effort five-hour/weekly quota snapshot through a non-blocking experimental console endpoint, and renders it below the chat box in the existing prompt metrics row.

This keeps the global footer/status/version area unchanged. The Codex usage source is ChatGPT's private /backend-api/wham/usage endpoint, so the quota data is intentionally best-effort and isolated under the experimental console surface.

How did you verify your code works?

• bun test test/plugin/codex.test.ts test/cli/tui/sync-provider.test.tsx test/cli/cmd/tui/prompt-metrics.test.ts
• bun typecheck
• OPENCODE_VERSION=1.14.28 bun run build --single --skip-install --skip-embed-web-ui
• bun turbo typecheck
• tmux visual smoke at 160x42 confirmed the quota row stays below the prompt and does not overwrite the footer/version line.

Screenshots / recordings

Temporarily removed while screenshots are sanitized.

Checklist

• I have tested my changes locally
• I have not included unrelated changes in this PR

[github-actions]

Hey! Your PR title Show Codex quota in prompt metrics doesn't follow conventional commit format.

Please update it to start with one of:

• feat: or feat(scope): new feature
• fix: or fix(scope): bug fix
• docs: or docs(scope): documentation changes
• chore: or chore(scope): maintenance tasks
• refactor: or refactor(scope): code refactoring
• test: or test(scope): adding or updating tests

Where scope is the package name (e.g., app, desktop, opencode).

See CONTRIBUTING.md for details.

[github-actions]

The following comment was made by an LLM, it may be inaccurate:

Based on my searches, I found one PR that appears potentially related:

Related PR Found:

• feat: prompt footer space for plugin to render usage details #16337 - "feat: prompt footer space for plugin to render usage details"
  • This PR is related as it deals with adding usage details to the prompt footer area, which is similar to the current PR's goal of displaying Codex quota in the prompt metrics row.

However, #16337 appears to be an older architectural change for providing footer space, while the current PR (#24826) specifically implements Codex quota display using that infrastructure.

Other tangentially related PRs:

• feat(usage): unified usage tracking with auth refresh (#9281) #9545 - "feat(usage): unified usage tracking with auth refresh" - deals with usage tracking
• feat(api): enrich provider.list with usage freshness and recent token signals #18439 - "feat(api): enrich provider.list with usage freshness" - related to usage metrics

None of these appear to be direct duplicates of PR #24826's specific implementation of showing Codex quota in prompt metrics.

[github-actions]

Thanks for updating your PR! It now meets our contributing guidelines. 👍

[50sotero]

Closing this for now while I refine the quota meter presentation and screenshot evidence. I will submit a cleaner PR once that is sorted out.