fix(cursor): show enterprise accounts in usage limits#28495

Problem

Cursor Enterprise accounts (token-based contracts) disappear from Usage → Limits. For them DashboardService/GetCurrentPeriodUsage answers 200 with no planUsage. cursorUsageResponseToLimits mapped that to a bare unsupported, and the shared collectors drop a bare unsupported everywhere, so the signed-in account showed no card, no notice and no link.

Reproduced on main at 8b74a69019 with the real web app. The dev server ran with a synthetic CURSOR_AUTH_TOKEN, and CURSOR_API_ENDPOINT pointed at a local stub returning the reporter's response body ({"billingCycleStart":"…","billingCycleEnd":"…","displayThreshold":100}). Cursor was signed in through Settings → Providers. Usage → Limits showed only "No provider on the selected environments reports subscription limits." Control: the same stub returning planUsage percentages shows the Cursor bars.

Change

When Cursor answers successfully but reports no plan percentages, cursorUsageResponseToLimits still returns unsupported, but now with a short message and externalUsage pointing at https://cursor.com/dashboard?tab=usage. This is the same shape managed ChatGPT logins already use. The existing external-usage row then shows the account on web and mobile, with the message and a "Manage usage" link. The chat /usage-limits panel and the thread-details tooltip pick up the same message, and the panel gains the link. No client, contract or settings changes. The other unsupported paths (explicit API key, memory store, Keychain, no token) and probeFailed are unchanged.

Scope and approval

Fixes pingdotgg/t3code#28477

Triaged via the automated issue flow.

Verification

• vp test run packages/provider-cursor/src/server/usageLimits.test.ts: the new test "links to the Cursor dashboard when a successful response has no plan usage" runs the real readCursorUsageLimits against a stub HTTP client with the enterprise-shaped body. On main it fails (1 failed, 9 passed): externalUsage and unavailable.message are missing. With the fix, 10/10 pass. packages/shared/src/usageLimits.test.ts also passes (70 tests across both files). vp run check:changed passes.
• Real-app before/after captures. Each side ran from its own checkout on a fresh database with the same synthetic stub in enterprise mode, with Cursor added through Settings. Web: Chromium 156, DPR 2, no device emulation, app clock frozen. Captures are 1280×800 for a 1440×900 CSS viewport and 780×1688 for 390×844. Android: Pixel 9 emulator, Android 16, 1080×2424, font scale 1.0. Diff0 marks every changed pixel at zero threshold and DiffT uses -fuzz 2%. Each diff cell shows Diff0 on the left and DiffT on the right.

Row	Before (8b74a69019)	After (05787363f2, merged with main as d1e6fd279e)	Diff0 · DiffT
Usage → Limits, web 1440, light
Usage → Limits, web 1440, dark
Usage → Limits, web 390, light
Chat /usage-limits panel, web 1440, dark
Thread details Limits tooltip, web 1440, dark
Usage → Limits, Android Pixel 9, light

What else changed, per the zero-threshold diffs:

• The chat panel's Cursor notice text changes from "This account has no subscription limits." to the new message, and the panel grows to hold the link.
• The thread-details tooltip shows the new message and shifts left to fit it.
• On Android, the status-bar minute and signal icon differ because the OS clock is not frozen. A retake with a frozen status bar, and the native chat /usage-limits panel, follow in a later edit.

Nothing else changed.

Not checked: a real Cursor Enterprise account (the response shape comes from the report), the destination page of the dashboard link for an Enterprise member, and the iOS client (it shares the same row with Android).

Model and harness: Claude Opus 5.5 (lead, red test, implementation, review B) and GPT-6.1-Sol (review A, proof audit, captures) in Claude Code / Codex via T3 Code.

🤖 Generated with Claude Code