Q156: approval history pages back and opens each decision in full

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

tests/unit/decided-window.test.ts

@@ -5,11 +5,15 @@ describe("the decided approvals list", () => {
   const decided = Array.from({ length: 30 }, (_, index) => ({ id: `apr_${index}` }));
 
   test("shows the newest 24", () => {
-    expect(decidedWindow(decided, null).map((item) => item.id)).toEqual(decided.slice(0, 24).map((item) => item.id));
+    expect(decidedWindow(decided, null, 24).map((item) => item.id)).toEqual(decided.slice(0, 24).map((item) => item.id));
   });
 
   test("adds an older focused approval so a link to it lands on it", () => {
-    expect(decidedWindow(decided, "apr_27").map((item) => item.id)).toEqual([...decided.slice(0, 24).map((item) => item.id), "apr_27"]);
-    expect(decidedWindow(decided, "apr_3")).toHaveLength(24);
+    expect(decidedWindow(decided, "apr_27", 24).map((item) => item.id)).toEqual([...decided.slice(0, 24).map((item) => item.id), "apr_27"]);
+    expect(decidedWindow(decided, "apr_3", 24)).toHaveLength(24);
+  });
+
+  test("pages further back on request", () => {
+    expect(decidedWindow(decided, null, 48).map((item) => item.id)).toEqual(decided.map((item) => item.id));
   });
 });