feat(authority): show automatic upgrade state

tests/authority-upgrade-state.mjs

@@ -0,0 +1,68 @@
+import assert from "node:assert/strict";
+
+import {
+  createAuthorityUpgradeState,
+  deriveAuthorityUpgradeState,
+  formatAuthorityUpgradeMeta,
+} from "../runtime/authority-upgrade-state.js";
+import { createGraphPersistenceState } from "../ui/ui-status.js";
+
+const initial = createAuthorityUpgradeState();
+assert.equal(initial.mode, "standalone");
+assert.equal(initial.ready, false);
+
+const graphState = createGraphPersistenceState();
+assert.equal(graphState.authorityUpgradeMode, "standalone");
+assert.equal(graphState.authorityUpgradeReady, false);
+assert.equal(graphState.authorityUpgradeState.text, "纯前端模式");
+
+const absent = deriveAuthorityUpgradeState({
+  settings: { authorityEnabled: "auto" },
+  capability: { installed: false, reason: "not-installed" },
+  browserState: { mode: "minimal" },
+});
+assert.equal(absent.mode, "standalone");
+assert.equal(absent.text, "纯前端模式");
+assert.equal(absent.ready, false);
+
+const degraded = deriveAuthorityUpgradeState({
+  settings: { authorityEnabled: "auto" },
+  capability: {
+    installed: true,
+    healthy: false,
+    sessionReady: false,
+    permissionReady: false,
+    reason: "probe-failed",
+  },
+});
+assert.equal(degraded.mode, "authority-degraded");
+assert.equal(degraded.level, "warning");
+assert.match(degraded.meta, /probe-failed/);
+
+const enhanced = deriveAuthorityUpgradeState({
+  settings: {
+    authorityEnabled: "auto",
+    authorityPrimaryWhenAvailable: true,
+  },
+  capability: {
+    installed: true,
+    healthy: true,
+    sessionReady: true,
+    permissionReady: true,
+    serverPrimaryReady: true,
+    storagePrimaryReady: true,
+    triviumPrimaryReady: true,
+    jobsReady: true,
+  },
+  browserState: { mode: "off" },
+});
+assert.equal(enhanced.mode, "authority-enhanced");
+assert.equal(enhanced.ready, true);
+assert.equal(enhanced.text, "服务端增强已启用");
+
+assert.equal(
+  formatAuthorityUpgradeMeta("准备就绪", enhanced),
+  "准备就绪 · 服务端增强已启用",
+);
+
+console.log("authority-upgrade-state tests passed");