fix(usage): keep same-email Codex subscriptions apart when their plans differ

[tan7vir]

What Changed

collectLimitSources and collectLimitAccounts in packages/shared/src/usageLimits.ts now identify a subscription by driver, email, and the plan string each side already carries (provider.auth.label natively, account.plan from a hub). Two same-email accounts whose plans differ stay two pooled accounts; an unset plan on either side still merges exactly as before. A small accountGroupKey helper next to accountKey holds that rule so both collectors agree on identity. accountKey itself is unchanged, so collectProviderUsageLimits (the /usage-limits command) still emits one row per native instance.

The hub adapter (apps/server/src/usage/cliproxyApi.ts) no longer labels Claude accounts with a placeholder "Claude Subscription" plan. The Anthropic OAuth usage read carries no subscription tier, so that string could never match a native tier such as "Claude Max Subscription" and would have split one Claude subscription reported natively and by a hub into two accounts (Macroscope caught this on the first revision). Hub-only Claude accounts therefore show no Plan row in Limits; Codex hub accounts keep their codexPlanLabel plan, which is the same table the native provider uses.

Why

Fixes #10835.

One ChatGPT email can hold a personal Plus subscription and also belong to a Business workspace; those are two independent quotas. accountKey was driver + email only, so Usage → Limits collapsed both Codex instances into one account, and because both are probed in the same pass with an identical checkedAt, iteration order decided which one survived.

Native and hub Codex plan strings come from the same codexPlanLabel table (apps/server/src/provider/Layers/CodexProvider.ts and apps/server/src/usage/cliproxyApi.ts), so one real subscription produces the same label on both sides and equality is a safe comparison. The existing fixtures show native instances with no label merging with a hub account that does carry a plan, so an unknown plan is treated as compatible rather than as a split, which keeps the native-plus-hub and two-environment dedupe intact.

This follows the fix prescribed in the triage. Because the rule lives in the shared helper, #10700 can adopt it for /usage-limits rows when it lands, so both collectors share one identity. Residual, as noted in the triage: two Business workspaces on the same email with an identical plan string still collapse, since nothing on the data distinguishes them today.

Verification

• vp test run packages/shared/src/usageLimits.test.ts: 49 passed. The two new regression tests (same-email Plus + Business stay two accounts; a hub account with a different plan is not hidden behind the native instance) failed before the fix and pass after. Two more pin that same email + same plan still merges into one, and that a native Claude tier still merges with the hub's tierless read of the same account.
• vp test run apps/server/src/usage/cliproxyApi.test.ts: 12 passed.
• vp lint on both files: clean. vp run --filter @t3tools/shared typecheck, --filter @t3tools/web typecheck, and --filter t3 typecheck (server): pass.

No layout change. The only visible difference is the dropped placeholder Plan row for hub-only Claude accounts, which needs a CLIProxyAPI hub to reproduce, so no screenshot is attached.

Checklist

• This PR is small and focused
• I explained what changed and why
• I included before/after screenshots for any UI changes (not applicable: no UI change)
• I included a video for animation/interaction changes (not applicable)

Written by Claude Fable 5.1 in Claude Code, with a Claude Sonnet 5 subagent for the implementation pass.

Summary by CodeRabbit

• Bug Fixes
  • Same-email accounts with different subscription plans are now kept separate, preventing incorrect usage-limit merging.
  • Matching plans continue to merge correctly across native and hub accounts.
  • Claude usage now preserves the native plan while using the freshest available usage windows.
  • Codex accounts with different plans remain distinct, ensuring usage limits are attributed to the correct subscription.

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📝 Walkthrough

Walkthrough

Usage limit grouping now separates same-email subscriptions when their plan strings differ. Native and hub accounts still merge when their plans match. Claude OAuth usage no longer assigns a hardcoded plan.

Changes

Usage limit account grouping

Layer / File(s)	Summary
Plan-aware source grouping packages/shared/src/usageLimits.ts	collectLimitSources and accountGroupKey retain separate groups for differing plans while treating unset plans as wildcards.
Plan-aware account merging packages/shared/src/usageLimits.ts, apps/server/src/usage/cliproxyApi.ts	collectLimitAccounts applies plan-aware keys to native and hub accounts. Claude OAuth usage leaves the plan unset.
Plan-aware grouping validation packages/shared/src/usageLimits.test.ts	Tests verify differing hub plans remain visible, matching plans merge, tierless Claude accounts preserve the native plan, and differing Codex plans remain separate.

Priority: ➖ Normal

Estimated code review effort: 3 (Moderate) | ~20 minutes

Severity of issue fixed: Medium

Merge Risk: ⚪ Minimal · up to 47b28

This change separates same-email Codex subscriptions with different plans while preserving intended merging for matching or unset plans, and removes unsupported Claude plan labels. No current merge-readiness risk remains.

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Docstring Coverage	⚠️ Warning	Docstring coverage is 75.00% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 4 functions across 3 files.	Write docstrings for the functions missing them to satisfy the coverage threshold.

✅ Passed checks (4 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly identifies the primary fix: keeping same-email Codex subscriptions separate when their plans differ.
Description check	✅ Passed	The description includes the required What Changed, Why, UI Changes, and Checklist sections. It explains the implementation, motivation, verification, and why screenshots are not applicable.
Linked Issues check	✅ Passed	The changes satisfy issue #10835 by separating same-email Codex subscriptions with different plans, preserving matching-plan merges, and treating unset plans as compatible. The shared grouping logic a…
Out of Scope Changes check	✅ Passed	The Claude plan change is related to the new plan-aware grouping because it prevents a placeholder plan from incorrectly splitting native and hub Claude data. No unrelated changes are evident.

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[macroscopeapp]

Approvability

Verdict: Would Approve

Macroscope's review found this PR approvable — This is a narrowly scoped usage-limit grouping fix with targeted regression coverage; existing matching and unknown-plan deduplication remains intact, and runtime impact is limited to pooled limits display. An unresolved Medium finding separately identifies a Claude native/hub label mismatch that can still duplicate one subscription.

Not approved because:

• 1 blocking correctness issue found at or above your repo's Minimum Blocking Severity

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Actionable comments posted: 1

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Inline comments:
In `@packages/shared/src/usageLimits.test.ts`:
- Line 441: Strengthen the test around collectLimitAccounts(input) to assert
that the single merged account retains the expected merged plan and the freshest
usage window, not just the result count. Use the existing expected plan and
latest hub usage values from the test fixtures, while preserving the count
assertion.

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[shivamhwp]

Note: GPT-6 on behalf of shivam (@shivamhwp).

Please avoid assigning an unknown plan to whichever named subscription happens to appear first. With Plus at 20%, Business at 70%, and a fresher same-email native reading without auth.label at 95%, ordering the instances as Plus/Business/unknown displays Plus 95% and Business 70%. Reversing the two named instances displays Plus 20% and Business 95%.

The wildcard is safe when there is only one known plan for that driver/email. Once multiple plans exist, the unlabeled reading cannot identify which quota, credits, or redemption target it belongs to. Determine the distinct known plans before grouping, and keep ambiguous readings separate from named subscriptions unless a stronger account identity resolves them. Apply the same rule to source suppression so an ambiguous account is not hidden as a known duplicate.

Keep the existing same-plan and single-known-plan deduplication behavior, and add permutation coverage with an unlabeled reading alongside two different named plans.

[relsunkaev]

Confirmed the original bug on 0.0.43-nightly.20260920.1990: two enabled, authenticated Codex profiles with the same email, one Pro 20x and one Business, collapse into the Business entry in Usage → Limits.

Validated this PR at 47b28f48 locally:

• All 49 packages/shared/src/usageLimits.test.ts tests pass.
• Shared-package typecheck and targeted lint of the three changed files pass.
• A synthetic Pro 20x (20% used) + Business (70% used) fixture passed assertions for two separate accounts with their own quotas in both input orders. No credentials or live account requests were used for the fixture. I have not browser-verified the patched app or rerun the server tests.

The fix covers that two-profile case. Two things remain before landing: GitHub reports merge conflicts in packages/shared/src/usageLimits.ts and its test file, and I reproduced @shivamhwp's unknown-plan issue on this head. Adding a fresher unlabeled 95% reading gives Pro 95% / Business 70%; reversing the named profiles gives Pro 20% / Business 95%.

Related follow-up, not introduced here: /usage-limits still matches hub credits by email alone. With these two native profiles and a same-email Business hub account holding two credits, collectProviderUsageLimits assigns the Business balance and redemption target to both native rows, including Pro. Sharing the corrected identity rule with that path would prevent showing or redeeming the wrong subscription's credits.

Validation performed with Codex.