## What happened

In the agents panel, the status banner's visibility and its content are keyed off **different** fields:

`shell/plugins/agents/Panel.qml` (~line 498):

```qml
// ---------- Status ----------
BorderSurface {
  visible: !!root.provider && String(root.provider.usageStatusText || "") !== ""
  ...
  Text {
    id: statusText
    text: root.provider ? String(root.provider.authHelpText || "") : ""
```

So a record with a non-empty `usageStatusText` and an empty `authHelpText` renders an **empty red warning box** — urgent-tinted border and background, no text.

## Why this matters beyond the shipped providers

It never fires for `claude`/`codex`/`fireworks`, because those set both fields together (or neither). But the plugin's own README advertises third-party collectors as the supported extension path:

> Adding an agent therefore never touches this plugin: ship a collector that prints the record contract (see the `claude` and `codex` collectors in `bin/`), and the panel gains a tab.

The record contract is discoverable only by reading the shipped collectors' output, and nothing signals that `usageStatusText` means "something is wrong" rather than "a line of status to display". Setting it to a healthy summary — e.g. `"$22.20 all-time across 49 sessions"` — silently produces an empty alarm box.

## Steps to reproduce

1. Write `~/.local/state/omarchy/agents/usage/example.json`:
   ```json
   {
     "schemaVersion": 1, "id": "example", "name": "Example",
     "updatedAt": "2026-09-03T13:00:00+00:00",
     "ready": true, "hasLocalStats": true,
     "tierLabel": "Pay-as-you-go",
     "usageStatusText": "$22.20 all-time across 49 sessions",
     "authHelpText": "",
     "limits": [], "todayPrompts": 0, "todaySessions": 0,
     "todayTotalTokens": 0, "todayTokensByModel": {},
     "totalPrompts": 0, "totalSessions": 0, "activeDays": 0,
     "activeDates": [], "recentDays": [], "modelUsage": {}
   }
   ```
2. `omarchy-shell omarchy.agents refresh`, then open the panel on the Example tab.

## Expected

Either the status text renders, or no banner is drawn.

## Actual

An empty urgent-styled box sits between the tab row and `TOKENS BY DAY`. The text is present in `usageStatusText` but never displayed, because the `Text` reads `authHelpText`.

Note `heroMeta()` (~line 181) *does* read `usageStatusText`, falling back to `tierLabel` — so the same field drives the hero subtitle and gates an unrelated warning box.

## Suggested fix

Render the status text the visibility condition is based on:

```qml
text: root.provider
  ? String(root.provider.usageStatusText || root.provider.authHelpText || "")
  : ""
```

...or gate the banner on `authHelpText` instead, so the box appears only when there is help to show. Documenting the intended meaning of `usageStatusText` in the plugin README would also prevent third-party collectors from tripping on it.

## System

- Omarchy 4.0.2-1
- Hyprland 0.56.2
- quickshell 0.3.1-1
- Kernel 7.1.9-arch1-2
- AMD Ryzen AI 9 HX 370 / Radeon 890M