Usage limits hub fixture

A fake CLIProxyAPI hub that serves the Limits evidence scenarios in scenarios.json:

Scenario	Accounts
A	mixed Codex and Claude accounts
B	one account per provider
C	six long-email Codex accounts
F	xAI and Antigravity accounts that read, answer malformed, or are refused
L	named accounts (no email, so segments show the auth-file name)
P	one account per read hub provider, plus an unread Kiro account
T	forty accounts, so pooled segments are 4px wide at 390px

Reset times are minute offsets from n0. An account's state of malformed or refused makes its usage unreadable, so Limits leaves it out.

Rebuild a capture

1. Start a dev server with empty provider homes, so local logins add no accounts:

   CODEX_HOME=$(mktemp -d) CLAUDE_CONFIG_DIR=$(mktemp -d) vp run dev

2. Write state.json as {"scenario": "A", "n0": 1792515540000}. That n0 is 2026-10-20T16:59:00Z, the instant every published capture uses. Then start the hub:

   node hub.mjs state.json 18517

3. Under Settings → Providers → Usage limit sources, add a hub with URL http://127.0.0.1:18517, any management key, and label Team hub. The composer panel prints that label on every account row.

4. Freeze the browser clock at n0 from the devtools console:

   const T = 1792515540000;
   const R = Date;
   window.Date = class extends R {
     constructor(...a) {
       super(...(a.length ? a : [T]));
     }
     static now() {
       return T;
     }
   };

   Then re-read the time:

   • On the Usage page, select Cost and then Limits again.
   • Open the composer panel with /usage-limits after freezing.
   • The sidebar's relative timestamp picks up the frozen clock on its next minute tick.

5. Viewports and themes: emulate prefers-color-scheme light and dark, and wait a few seconds after switching theme or size so transitions and overlay scrollbars settle.

   Surface	Viewport
   Usage page	1440×900 and 390×1500
   Scenario T	390×3100, so the page does not scroll
   Composer panel, Codex thread (gpt-6-astra)	1440×900
   Composer panel, Claude thread (Claude Opus 5.5)	390×1300

6. Edit state.json and press Refresh limits to switch scenarios.

Not from the fixture

• "Codex: Could not read limits." That banner comes from the local Codex install, which is unauthenticated with an empty CODEX_HOME.
• "Claude API Key" rows in the Claude composer panel come from the local Claude install, not the fixture.