fix(server): report the Grok account email so usage limits merge across environments

[jakeleventhal]

What Changed

The Grok provider now includes the signed-in account's email in its snapshot (auth.email). The email comes from the same ~/.grok/auth.json credential that the usage-limits request already uses. readGrokAccount reads the credential once and returns the email together with the usage limits from that same login. It uses the same guards: nothing is reported for API-key auth, custom OIDC or endpoint deployments, or other scopes in the file.

Why

The usage page merges an account across environments by provider + email (accountKey in packages/shared/src/usageLimits.ts). Codex and Claude report an email, so one subscription signed in on two machines shows as a single bar "Signed in" on both. Grok only reported "Grok account", so the same Grok account on two environments fell back to a per-environment key and showed as two separate bars, each claiming its own share of the pool.

UI Changes

Two local servers, both signed in to the same Grok account, viewed from one client under All environments. Both test servers ran on one Mac, which is why both environments have the same name.

Before: two Grok bars for one account

After: one Grok bar, signed in on both environments (the email stays redacted in the popover)

Verification: vp test run apps/server/src/provider/Layers/GrokProvider.test.ts (33 passing, including a new test that the email names the account whose limits were read), server typecheck, and lint.

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes
• I included a video for animation/interaction changes (n/a)

Done by Claude Opus 5 (1M context) in Claude Code.

🤖 Generated with Claude Code

Summary by CodeRabbit

• New Features

  • Grok authentication details now display the signed-in account email when available.
  • Grok account checks now return usage limits together with account information.
  • Account email details remain available when usage-limit checks cannot be completed.

• Bug Fixes

  • Email detection now prioritizes the current login scope, trims whitespace, and safely handles missing or invalid authentication data.
  • API-key authentication no longer reports an account email.

[macroscopeapp]

Approvability

Verdict: Not approved

Macroscope's review found this PR not approvable — This production change publishes Grok authentication identity data and changes usage-limit aggregation across environments. Although focused and tested, its authentication, sensitive-data, and metering effects warrant human review.

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• apps/server/src/provider/Layers/grokUsageLimits.ts

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📝 Walkthrough

Walkthrough

Grok account lookup now returns usage limits with optional account email data. The Grok provider attaches available email data to authenticated snapshots. Tests cover credential selection, result shape, email precedence, trimming, and fallback cases.

Changes

Grok account identity and usage lookup

Layer / File(s)	Summary
Grok credential resolution apps/server/src/provider/Layers/grokUsageLimits.ts	The credential schema accepts an optional email. readGrokCredential resolves supported credentials and rejects API-key, alternate deployment, and alternate account configurations.
Grok account lookup apps/server/src/provider/Layers/grokUsageLimits.ts	readGrokAccount returns { email, usageLimits }. It preserves the resolved email when usage probing fails.
Provider integration and validation apps/server/src/provider/Drivers/GrokDriver.ts, apps/server/src/provider/Layers/GrokProvider.test.ts	The driver adds available account email data to authenticated snapshots. Tests use the new return shape and validate email selection, trimming, precedence, and fallback behavior.

Priority: ⬇️ Low

Estimated code review effort: 3 (Moderate) | ~25 minutes

Change: Bug fix

Sequence Diagram(s)

sequenceDiagram
  participant GrokDriver
  participant readGrokAccount
  participant GrokAPI
  GrokDriver->>readGrokAccount: request account and usage data
  readGrokAccount->>GrokAPI: probe usage limits
  GrokAPI-->>readGrokAccount: usage response or probe failure
  readGrokAccount-->>GrokDriver: return usageLimits and optional email
  GrokDriver-->>GrokDriver: attach email to authenticated snapshot

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Suggested reviewers: maria-rcks

Merge Risk: ⚪ Minimal · up to 9b279

The Grok account email can retain its original display casing while usage limits still merge case variants into one account. No actionable merge risk remains.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 0.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Title check	✅ Passed	The title clearly and concisely describes the main change: reporting the Grok account email so usage limits merge across environments.
Description check	✅ Passed	The description includes the required What Changed, Why, UI Changes, and Checklist sections. It explains the implementation, motivation, screenshots, verification steps, and checklist status.

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Inline comments:
In `@apps/server/src/provider/Layers/grokUsageLimits.ts`:
- Line 160: Update the probeFailed fallback in readGrokAccount to retain the
resolved, trimmed email when the usage request, decoding, or timeout fails; only
return email as undefined when credential resolution produced no email, while
preserving the existing failure handling.

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📒 Files selected for processing (3)

• apps/server/src/provider/Drivers/GrokDriver.ts
• apps/server/src/provider/Layers/GrokProvider.test.ts
• apps/server/src/provider/Layers/grokUsageLimits.ts

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