diff --git a/src/renderer/book.ts b/src/renderer/book.ts
index c05b990..2aa1eb4 100644
--- a/src/renderer/book.ts
+++ b/src/renderer/book.ts
@@ -402,6 +402,7 @@ export function initBook(api: FolioAPI) {
       if (ordered.length) showPlaceholder();
       else showPlaceholder();
     }
+    await refreshFullBook();
   }
 
   async function refreshMeta() {
@@ -410,7 +411,6 @@ export function initBook(api: FolioAPI) {
       selectedId = null;
       showPlaceholder();
     }
-    await refreshFullBook();
   }
 
   function renderChapterList() {
@@ -501,11 +501,19 @@ export function initBook(api: FolioAPI) {
     return false;
   }
 
+  // Assemble the whole book from the canonical book metadata (the same source
+  // the chapter sidebar uses) so Full Book always reflects the current chapter
+  // set and order, regardless of any in-memory renderer state.
   async function assembleFullBook(): Promise<string> {
+    const res = await api.getBookMeta();
+    if (!res || typeof res !== "object" || "error" in res) return "";
+    const book = res as BookMeta;
     const parts: string[] = [];
-    for (const ch of ordered) {
-      const res = await api.getChapterContent(ch.id);
-      const content = typeof res === "string" ? res : "";
+    for (const id of book.chapterOrder) {
+      const ch = book.chapters[id];
+      if (!ch) continue;
+      const contentRes = await api.getChapterContent(ch.id);
+      const content = typeof contentRes === "string" ? contentRes : "";
       const body = content.replace(/^\n+/, "").replace(/\s+$/, "");
       const block: string[] = [];
       if (!chapterHasOwnHeading(content, ch.title)) {
diff --git a/tests/selftest-scenario.js b/tests/selftest-scenario.js
index 5f530ab..1a87ae5 100644
--- a/tests/selftest-scenario.js
+++ b/tests/selftest-scenario.js
@@ -269,6 +269,89 @@ const BOOK2_DIR = __BOOKDIR2_VALUE__;
       !document.getElementById("chapterView").classList.contains("hidden") &&
       !document.getElementById("fullBookBtn").classList.contains("active");
 
+    // --- requirement matrix: reorder, persistence, edit ops reflect in Full Book ---
+    const rowFor = (id) =>
+      Array.from(document.querySelectorAll("#chapterList .chapter-row")).find((r) => r.dataset.id === id);
+    const moveUp = async (id) => {
+      rowFor(id).dispatchEvent(
+        new KeyboardEvent("keydown", { key: "ArrowUp", altKey: true, bubbles: true })
+      );
+      await new Promise((r) => setTimeout(r, 250));
+    };
+
+    // current order: [Alpha, Beta, Gamma]; move Gamma to front -> [Gamma, Alpha, Beta]
+    rowFor(gammaId).click();
+    await new Promise((r) => setTimeout(r, 200));
+    await moveUp(gammaId);
+    await moveUp(gammaId);
+    const orderReordered = (await window.folio.getBookMeta()).chapterOrder;
+    out.orderReordered = orderReordered;
+    out.reorderOk =
+      orderReordered[0] === gammaId && orderReordered[1] === alphaId && orderReordered[2] === betaId;
+
+    // Full Book follows the new chapter order and keeps every chapter's content
+    document.getElementById("fullBookBtn").click();
+    await new Promise((r) => setTimeout(r, 300));
+    const assembledGAB = fb.state.doc.toString();
+    out.fbAfterReorder = assembledGAB;
+    out.fbAfterReorderOk =
+      assembledGAB.startsWith("# Gamma\n\n# Gamma's Own Title") &&
+      assembledGAB.indexOf("# Alpha") > assembledGAB.indexOf("# Gamma") &&
+      assembledGAB.indexOf("# Beta") > assembledGAB.indexOf("# Alpha");
+    out.fbHasAllContent =
+      assembledGAB.includes("Gamma text") &&
+      assembledGAB.includes("Alpha body text") &&
+      assembledGAB.includes("Beta body without heading");
+
+    // switching between an individual chapter and Full Book never shows stale data
+    document.querySelector("#chapterList .chapter-row").click();
+    await new Promise((r) => setTimeout(r, 200));
+    document.getElementById("fullBookBtn").click();
+    await new Promise((r) => setTimeout(r, 300));
+    out.fbNoStale = fb.state.doc.toString() === assembledGAB;
+
+    // closing and reopening the book preserves the chapter order
+    await window.folio.openBookPath(BOOK2_DIR);
+    await new Promise((r) => setTimeout(r, 400));
+    const orderReopened = (await window.folio.getBookMeta()).chapterOrder;
+    out.orderAfterReopen = orderReopened;
+    out.reopenPersists = JSON.stringify(orderReopened) === JSON.stringify(orderReordered);
+
+    // deleting a chapter updates the sidebar and Full Book
+    rowFor(alphaId).querySelector('[data-act="del"]').click();
+    await new Promise((r) => setTimeout(r, 150));
+    document.getElementById("modalOk").click();
+    await new Promise((r) => setTimeout(r, 300));
+    out.orderAfterDelete = (await window.folio.getBookMeta()).chapterOrder;
+    out.deleteOk = !(await window.folio.getBookMeta()).chapterOrder.includes(alphaId);
+    document.getElementById("fullBookBtn").click();
+    await new Promise((r) => setTimeout(r, 300));
+    const assembledAfterDelete = fb.state.doc.toString();
+    out.fbAfterDelete = assembledAfterDelete;
+    out.fbAfterDeleteOk =
+      !assembledAfterDelete.includes("Alpha body text") && assembledAfterDelete.includes("Gamma text");
+
+    // renaming a chapter updates its Full Book heading
+    rowFor(betaId).querySelector('[data-act="rename"]').click();
+    await new Promise((r) => setTimeout(r, 150));
+    document.getElementById("modalInput").value = "Beta Renamed";
+    document.getElementById("modalOk").click();
+    await new Promise((r) => setTimeout(r, 300));
+    const assembledAfterRename = fb.state.doc.toString();
+    out.fbAfterRename = assembledAfterRename;
+    out.fbAfterRenameOk =
+      assembledAfterRename.includes("# Beta Renamed") &&
+      !assembledAfterRename.includes("# Beta\n\nBeta body without heading");
+
+    // a newly created empty chapter appears in Full Book with just its heading
+    const emptyId = (await window.folio.createChapter("Empty")).id;
+    await new Promise((r) => setTimeout(r, 300));
+    document.getElementById("fullBookBtn").click();
+    await new Promise((r) => setTimeout(r, 300));
+    const assembledWithEmpty = fb.state.doc.toString();
+    out.fbWithEmpty = assembledWithEmpty;
+    out.fbEmptyOk = assembledWithEmpty.includes("# Empty") && assembledWithEmpty.includes("Beta Renamed");
+
     const okFlags = [
       "dndMoved",
       "kbMoved",
@@ -297,6 +380,15 @@ const BOOK2_DIR = __BOOKDIR2_VALUE__;
       "copyStatusShown",
       "fullBookSelectAllOk",
       "backToChapterOk",
+      "reorderOk",
+      "fbAfterReorderOk",
+      "fbHasAllContent",
+      "fbNoStale",
+      "reopenPersists",
+      "deleteOk",
+      "fbAfterDeleteOk",
+      "fbAfterRenameOk",
+      "fbEmptyOk",
     ];
     out.all = okFlags.every((f) => out[f] === true);
   } catch (e) {