feat(maestro): sort dormant sessions after live ones in the sidebar

docs/SIDEBAR.md: a dormant session takes the lowest precedence in the
sidebar tree, so a rebooted host's live work never sorts under a pile
of dormant cards.

web/src/tree.test.ts

@@ -1,6 +1,6 @@
 import { describe, expect, it } from "vitest";
 
-import { buildTree, mergeLinear, type TreeFolder, type TreeNode } from "./tree.js";
+import { buildTree, compareNodes, mergeLinear, type TreeFolder, type TreeNode } from "./tree.js";
 import type { Session } from "./types.js";
 
 function session(id: string, cwd: string, command = "bash"): Session {
@@ -67,6 +67,42 @@ describe("buildTree", () => {
     expect(root.children[0].kind).toBe("folder");
     expect(root.children[1].kind).toBe("leaf");
   });
+
+  // #168, docs/SIDEBAR.md: a dormant session takes the lowest precedence in
+  // the ordering, so live work always sorts above it, even a name that would
+  // otherwise sort first.
+  it("sorts a dormant session after live ones in the same folder, name notwithstanding", () => {
+    const dormant = { ...session("aaa-dormant", "/home/n/work"), status: "Dormant" } as Session;
+    const live = session("zzz-live", "/home/n/work");
+    const root = buildTree([dormant, live], "/home/n") as TreeFolder;
+    const folder = root.children[0] as TreeFolder;
+    const ids = folder.children.map((c) => (c.kind === "leaf" ? c.session.id : c.name));
+    expect(ids).toEqual(["zzz-live", "aaa-dormant"]);
+  });
+
+  it("still sorts dormant sessions by name against each other", () => {
+    const a = {
+      ...session("a", "/home/n/work"),
+      status: "Dormant",
+      metadata: { name: "a" },
+    } as Session;
+    const b = {
+      ...session("b", "/home/n/work"),
+      status: "Dormant",
+      metadata: { name: "b" },
+    } as Session;
+    const root = buildTree([b, a], "/home/n") as TreeFolder;
+    const folder = root.children[0] as TreeFolder;
+    const ids = folder.children.map((c) => (c.kind === "leaf" ? c.session.id : c.name));
+    expect(ids).toEqual(["a", "b"]);
+  });
+
+  it("exposes the leaf/name precedence directly via compareNodes", () => {
+    const dormant: TreeNode = { kind: "leaf", session: { ...session("a", "/x"), status: "Dormant" } };
+    const live: TreeNode = { kind: "leaf", session: session("b", "/x") };
+    expect(compareNodes(dormant, live)).toBeGreaterThan(0);
+    expect(compareNodes(live, dormant)).toBeLessThan(0);
+  });
 });
 
 describe("mergeLinear", () => {

web/src/tree.ts

@@ -18,8 +18,16 @@ export interface TreeLeaf {
 
 export type TreeNode = TreeFolder | TreeLeaf;
 
+/** docs/SIDEBAR.md: a dormant session takes the lowest precedence in the
+ * ordering, so live work always sorts above it regardless of name. */
+function dormantRank(node: TreeNode): number {
+  return node.kind === "leaf" && node.session.status === "Dormant" ? 1 : 0;
+}
+
 export function compareNodes(a: TreeNode, b: TreeNode): number {
   if (a.kind !== b.kind) return a.kind === "folder" ? -1 : 1;
+  const rank = dormantRank(a) - dormantRank(b);
+  if (rank !== 0) return rank;
   const an = a.kind === "folder" ? a.name : sessionName(a.session);
   const bn = b.kind === "folder" ? b.name : sessionName(b.session);
   return an.localeCompare(bn);