Baseline: omarchy.agents as shipped

Panel.qml, Main.qml, Agent.qml and the provider assets exactly as they ship
in omarchy-dev 4.0.0.r1744.gf002044 (shell/plugins/agents/), alongside the
manifest `omarchy plugin clone` generates.

Kept on its own branch so `git diff stock..master` shows precisely what
this fork changes.

Agent.qml

@@ -0,0 +1,34 @@
+import QtQuick
+import Quickshell.Io
+
+// One agent's usage record, read straight off the data file that
+// omarchy-agent-usage-update maintains. The panel never learns how the
+// numbers were made — a record that appears in the usage directory is an
+// agent, whoever wrote it.
+Item {
+  id: root
+  visible: false
+
+  property string agentId: ""
+  property string path: ""
+  property var record: null
+
+  FileView {
+    path: root.path
+    watchChanges: true
+    printErrors: false
+    onFileChanged: reload()
+    onLoaded: root.parse(text())
+    onLoadFailed: root.record = null
+  }
+
+  function parse(content) {
+    try {
+      var parsed = JSON.parse(String(content || ""))
+      root.record = parsed && typeof parsed === "object" ? parsed : null
+    } catch (e) {
+      console.warn("agents", "Ignoring bad usage record", root.path, e)
+      root.record = null
+    }
+  }
+}