diff --git a/src/index.html b/src/index.html
index e32cb26..32fa7f3 100644
--- a/src/index.html
+++ b/src/index.html
@@ -1502,9 +1502,68 @@
     body.template-book .jewelSpineGuide,
     body.template-book .spineText { display: none !important; }
 
+    /* Markdown chapter editor — shown when a reflow entry is open
+       on the book canvas. Two-pane layout: textarea on the left,
+       paginated preview on the right. */
+    #bookChapterEditor { display: none; }
+    body.template-book.editing-book-chapter #bookChapterEditor {
+      display: flex;
+      flex-direction: column;
+      width: 100%; gap: 10px;
+      padding: 14px 18px;
+      box-sizing: border-box;
+      min-height: calc(100vh - 160px);
+    }
+    .bookChapterEditorToolbar {
+      display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
+      padding-bottom: 8px; border-bottom: 1px solid var(--line);
+    }
+    .bookChapterEditorToolbar input[type="text"] {
+      flex: 1; min-width: 160px;
+      font-size: 1rem; font-weight: 600;
+      padding: 4px 8px;
+      border: 1px solid var(--line);
+    }
+    .bookChapterEditorPages {
+      font-size: .78rem; color: var(--muted); white-space: nowrap;
+    }
+    .bookChapterEditorBody {
+      flex: 1;
+      display: grid;
+      grid-template-columns: 1fr 1fr;
+      gap: 10px;
+      min-height: 0;
+    }
+    #bookChapterEditorTextarea {
+      width: 100%; height: 100%;
+      padding: 12px;
+      font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
+      font-size: 13px; line-height: 1.55;
+      border: 1px solid var(--line); background: #fff;
+      resize: none;
+    }
+    .bookChapterEditorPreviewWrap {
+      border: 1px solid var(--line); background: #fff;
+      overflow: auto;
+      padding: 16px 20px;
+    }
+    #bookChapterEditorPreview { font-family: Georgia, serif; line-height: 1.6; }
+    #bookChapterEditorPreview h1 { font-family: Helvetica, Arial, sans-serif; font-size: 2rem; margin: 0 0 .6em; }
+    #bookChapterEditorPreview h2 { font-family: Helvetica, Arial, sans-serif; font-size: 1.5rem; margin: 1.2em 0 .4em; }
+    #bookChapterEditorPreview h3 { font-family: Helvetica, Arial, sans-serif; font-size: 1.2rem; margin: 1em 0 .4em; }
+    #bookChapterEditorPreview p { margin: 0 0 .8em; }
+    #bookChapterEditorPreview blockquote { margin: .8em 1.2em; font-style: italic; color: #4b5563; }
+    #bookChapterEditorPreview code { background: #f5f5f5; padding: 1px 5px; font-size: .92em; }
+    #bookChapterEditorPreview pre { background: #f5f5f5; padding: 10px 12px; overflow-x: auto; }
+    #bookChapterEditorPreview pre code { background: none; padding: 0; }
+    #bookChapterEditorPreview a { color: #0066cc; }
+    #bookChapterEditorPreview hr { border: 0; border-top: 1px solid #cccccc; margin: 1.2em 0; }
+    #bookChapterEditorPreview ul, #bookChapterEditorPreview ol { padding-left: 1.4em; margin: 0 0 .8em; }
+    #bookChapterEditorPreview img { max-width: 100%; }
+
     /* Book view shell — mirrors the deck-sorter layout pattern. */
     #bookView { display: none; }
-    body.template-book:not(.editing-book-page) #bookView {
+    body.template-book:not(.editing-book-page):not(.editing-book-chapter) #bookView {
       display: flex;
       flex-direction: column;
       width: 100%;
@@ -4259,6 +4318,21 @@
           <div class="deckSlideGrid" id="deckSlideGrid"></div>
         </div>
 
+        <div id="bookChapterEditor">
+          <div class="bookChapterEditorToolbar">
+            <button type="button" id="bookChapterEditorBack">← Back to Pages</button>
+            <input type="text" id="bookChapterEditorTitle" placeholder="Chapter title" />
+            <span class="bookChapterEditorPages" id="bookChapterEditorPages"></span>
+            <span class="bookViewSpacer"></span>
+            <span class="hint" id="bookChapterEditorHint">Markdown autosaves to this book. Phase D1 publishes as a NIP-23 article.</span>
+          </div>
+          <div class="bookChapterEditorBody">
+            <textarea id="bookChapterEditorTextarea" placeholder="# Chapter 1&#10;&#10;Write your chapter here…"></textarea>
+            <div class="bookChapterEditorPreviewWrap">
+              <div id="bookChapterEditorPreview"></div>
+            </div>
+          </div>
+        </div>
         <div id="bookView">
           <div class="bookViewToggleBar">
             <button type="button" id="bookViewTogglePages"  class="bookViewToggle active">Pages</button>
@@ -4271,10 +4345,11 @@
               <div class="buttonRow">
                 <button type="button" id="bookAddPageBtn" class="primary">+ Add page</button>
                 <button type="button" id="bookAddTenBtn">+ Add 10 pages</button>
+                <button type="button" id="bookAddChapterBtn">+ Add chapter</button>
               </div>
             </div>
             <div class="deckSlideGrid" id="bookPagesGrid"></div>
-            <p class="hint" id="bookPagesHint" style="margin:8px 0 0">Phase A4 skeleton: tiles are placeholders. Click a tile in Phase B to edit the page. Reflow / NIP-23 chapters arrive in Phase C.5; per-page Nostr publish in Phase D1.</p>
+            <p class="hint" id="bookPagesHint" style="margin:8px 0 0">Click a designed-page tile to edit it on the canvas. Click a chapter tile to edit its markdown. Per-page Nostr publish (per-event sidecars + manifest) lands in Phase D1.</p>
           </div>
           <div id="bookCoverView" style="display:none">
             <div class="bookCoverSummary" id="bookCoverSummary"></div>
@@ -5363,6 +5438,7 @@
 
   <script src="vendor/qrcode.min.js"></script>
   <script src="vendor/polygon-clipping.min.js"></script>
+  <script src="vendor/marked.min.js"></script>
   <script>
     const $ = (id) => document.getElementById(id);
     const safe$ = (id) => { try { return $(id); } catch { return null; } };
@@ -8561,6 +8637,39 @@
       syncInputs();
       render();
     }
+    // Add a fresh reflow chapter entry. Phase C.5 stores the
+    // markdown locally on the entry; Phase D1 will publish it as a
+    // NIP-23 article (kind-30023) and replace `chapterMarkdown`
+    // with a real `textRef`. The default master is required for the
+    // chapter to paginate, and the picker in C.5.x will let users
+    // pick a different one.
+    function addBookChapter() {
+      const book = ensureBookState();
+      pushHistory('book: add chapter');
+      const num = (book.pages.filter(p => p.type === 'reflow').length || 0) + 1;
+      const entry = {
+        id: makeBookEntryId(),
+        type: 'reflow',
+        textRef: null,
+        textPinnedEventId: null,
+        chapterMarkdown: `# Chapter ${num}\n\nWrite your chapter here.`,
+        masterId: book.spec?.defaultMasterId || null,
+        masterRef: null,
+        chapterTitle: `Chapter ${num}`,
+        chapterNumber: num,
+        startsOnPage: 'any',
+        skipNumberOnFirstPage: false,
+        styleOverrides: null,
+        gating: null,
+      };
+      book.pages.push(entry);
+      renderBookPagesGrid();
+      syncInputs();
+      render();
+      // Drop straight into the editor so the user can start writing.
+      openBookChapter(entry.id);
+    }
+
     function addBookTenPages() {
       const book = ensureBookState();
       pushHistory('book: add 10 pages');
@@ -8815,15 +8924,18 @@
       const idx = book.pages.findIndex(p => p.id === entryId);
       if (idx < 0) return;
       const entry = book.pages[idx];
-      // Phase B2 supports designed pages only; reflow segments open
-      // in the chapter / markdown editor in C.5.
-      if (entry.type !== 'design') {
-        toastError?.('Reflow chapter editor lands in Phase C.5.');
+      // Reflow segments route to the markdown editor instead of the
+      // canvas editor.
+      if (entry.type === 'reflow') {
+        openBookChapter(entryId);
         return;
       }
+      if (entry.type !== 'design') return;
       book.editingEntryId = entryId;
       book.editingMasterId = null;          // only one editor open at a time
+      book.editingChapterId = null;
       document.body.classList.add('editing-book-page');
+      document.body.classList.remove('editing-book-chapter');
       clearLayerSelection?.();
       try { setEditorTool('select'); } catch {}
       syncBookPageEditBar();
@@ -8839,6 +8951,91 @@
       syncInputs();
       render();
     }
+    // Chapter editor (Phase C.5). Reflow entries open a two-pane
+    // textarea + live preview instead of the canvas. The book stays
+    // in 'book' template mode; an `editingChapterId` field tracks
+    // which entry is active and a body class flips the view.
+    function openBookChapter(entryId) {
+      const book = ensureBookState();
+      const entry = book.pages.find(p => p.id === entryId);
+      if (!entry || entry.type !== 'reflow') return;
+      book.editingChapterId = entryId;
+      book.editingEntryId = null;
+      book.editingMasterId = null;
+      document.body.classList.add('editing-book-chapter');
+      syncBookChapterEditor();
+      syncInputs();
+      render();
+    }
+    function closeBookChapter() {
+      const book = state.book;
+      if (book) book.editingChapterId = null;
+      document.body.classList.remove('editing-book-chapter');
+      syncInputs();
+      render();
+    }
+    // Push entry fields into the editor inputs + render the
+    // markdown preview. Skips the textarea when it currently has
+    // focus so live typing isn't blown away by re-renders.
+    function syncBookChapterEditor() {
+      const book = state.book;
+      const id = book?.editingChapterId;
+      if (!id) return;
+      const entry = book.pages.find(p => p.id === id);
+      if (!entry) return;
+      const titleEl = document.getElementById('bookChapterEditorTitle');
+      const ta = document.getElementById('bookChapterEditorTextarea');
+      const preview = document.getElementById('bookChapterEditorPreview');
+      const pagesEl = document.getElementById('bookChapterEditorPages');
+      if (titleEl && titleEl !== document.activeElement) titleEl.value = entry.chapterTitle || '';
+      if (ta && ta !== document.activeElement) ta.value = entry.chapterMarkdown || '';
+      if (preview) preview.innerHTML = markdownToSafeHtml(entry.chapterMarkdown || '');
+      if (pagesEl) pagesEl.textContent = 'Pagination preview lands in Phase C.5.2';
+    }
+    // Minimal HTML escape + marked render. Sanitizes by routing
+    // through marked.parse with `mangle:false, headerIds:false`
+    // and post-strips any `<script>` tags as belt-and-braces.
+    function markdownToSafeHtml(src) {
+      if (typeof window.marked === 'undefined' || !window.marked.parse) {
+        return '<p>(marked library failed to load)</p>';
+      }
+      try {
+        const html = window.marked.parse(String(src || ''), {
+          mangle: false,
+          headerIds: false,
+          breaks: false,
+          gfm: false,
+        });
+        // Belt-and-braces: drop any embedded <script> just in case.
+        return String(html).replace(/<script[\s\S]*?<\/script>/gi, '');
+      } catch (err) {
+        console.warn('marked parse failed', err);
+        return '<p>(markdown parse error)</p>';
+      }
+    }
+    function updateBookChapterMarkdown(value) {
+      const book = state.book;
+      const id = book?.editingChapterId;
+      if (!id) return;
+      const entry = book.pages.find(p => p.id === id);
+      if (!entry) return;
+      pushHistoryDebounced(`book:chapter:${id}:md`, 'book: edit chapter', 600);
+      entry.chapterMarkdown = String(value || '');
+      // Only re-render preview (cheap); thumb / pagination will
+      // re-run in C.5.2 once the engine exists.
+      const preview = document.getElementById('bookChapterEditorPreview');
+      if (preview) preview.innerHTML = markdownToSafeHtml(entry.chapterMarkdown);
+    }
+    function updateBookChapterTitle(value) {
+      const book = state.book;
+      const id = book?.editingChapterId;
+      if (!id) return;
+      const entry = book.pages.find(p => p.id === id);
+      if (!entry) return;
+      pushHistoryDebounced(`book:chapter:${id}:title`, 'book: rename chapter', 400);
+      entry.chapterTitle = String(value || '');
+    }
+
     // Master-edit mode: opens a master on the same canvas as the
     // per-page editor. Same body class so the CSS that hides
     // Pages overview / shows the sheet + tool palette applies; the
@@ -10357,6 +10554,8 @@
         state.templateMode === 'book' && (!!state.book?.editingEntryId || !!state.book?.editingMasterId));
       document.body.classList.toggle('editing-book-master',
         state.templateMode === 'book' && !!state.book?.editingMasterId);
+      document.body.classList.toggle('editing-book-chapter',
+        state.templateMode === 'book' && !!state.book?.editingChapterId);
       document.body.classList.toggle('editing-deck-slide', !!state.deck && state.deck.editingIndex !== null);
       document.body.classList.toggle('hide-guides', !state.showGuides);
       document.body.classList.toggle('hide-bleed', !state.showBleed);
@@ -13067,6 +13266,7 @@
       renderDeckSorter();
       renderBookPagesGrid();
       syncBookPageEditBar();
+      syncBookChapterEditor();
       // Only repaint the cover preview when its view is the active
       // sub-view — saves work on every render() in book mode.
       if (document.getElementById('bookCoverView')?.style.display !== 'none'
@@ -32059,6 +32259,11 @@
       // Book Designer — Pages overview + Cover view toggle.
       on('bookAddPageBtn', 'click', addBookDesignedPage);
       on('bookAddTenBtn',  'click', addBookTenPages);
+      on('bookAddChapterBtn', 'click', addBookChapter);
+      // Chapter editor panes.
+      on('bookChapterEditorBack', 'click', closeBookChapter);
+      on('bookChapterEditorTextarea', 'input', (e) => updateBookChapterMarkdown(e.target.value));
+      on('bookChapterEditorTitle', 'input', (e) => updateBookChapterTitle(e.target.value));
       on('bookViewTogglePages', 'click', () => setBookSubView('pages'));
       on('bookViewToggleCover', 'click', () => setBookSubView('cover'));
       on('bookPageEditBack', 'click', () => {
@@ -32398,11 +32603,16 @@
         const bookMastersM = $('bookMastersModal');
         if (bookMastersM && bookMastersM.getAttribute('aria-hidden') === 'false') { closeBookMastersModal(); return; }
         // Esc while editing a book surface returns to the right home:
-        // master-edit → masters modal, page-edit → Pages overview.
+        // master-edit → masters modal, page-edit / chapter-edit →
+        // Pages overview.
         if (state.templateMode === 'book' && state.book?.editingMasterId) {
           closeBookMaster();
           return;
         }
+        if (state.templateMode === 'book' && state.book?.editingChapterId) {
+          closeBookChapter();
+          return;
+        }
         if (state.templateMode === 'book' && state.book?.editingEntryId) {
           closeBookPage();
           return;
diff --git a/src/vendor/marked.min.js b/src/vendor/marked.min.js
new file mode 100644
index 0000000..f7ba710
--- /dev/null
+++ b/src/vendor/marked.min.js
@@ -0,0 +1,6 @@
+/**
+ * marked v14.1.4 - a markdown parser
+ * Copyright (c) 2011-2024, Christopher Jeffrey. (MIT Licensed)
+ * https://github.com/markedjs/marked
+ */
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?t(exports):"function"==typeof define&&define.amd?define(["exports"],t):t((e="undefined"!=typeof globalThis?globalThis:e||self).marked={})}(this,(function(e){"use strict";function t(){return{async:!1,breaks:!1,extensions:null,gfm:!0,hooks:null,pedantic:!1,renderer:null,silent:!1,tokenizer:null,walkTokens:null}}function n(t){e.defaults=t}e.defaults={async:!1,breaks:!1,extensions:null,gfm:!0,hooks:null,pedantic:!1,renderer:null,silent:!1,tokenizer:null,walkTokens:null};const s=/[&<>"']/,r=new RegExp(s.source,"g"),i=/[<>"']|&(?!(#\d{1,7}|#[Xx][a-fA-F0-9]{1,6}|\w+);)/,l=new RegExp(i.source,"g"),o={"&":"&amp;","<":"&lt;",">":"&gt;",'"':"&quot;","'":"&#39;"},a=e=>o[e];function c(e,t){if(t){if(s.test(e))return e.replace(r,a)}else if(i.test(e))return e.replace(l,a);return e}const h=/(^|[^\[])\^/g;function p(e,t){let n="string"==typeof e?e:e.source;t=t||"";const s={replace:(e,t)=>{let r="string"==typeof t?t:t.source;return r=r.replace(h,"$1"),n=n.replace(e,r),s},getRegex:()=>new RegExp(n,t)};return s}function u(e){try{e=encodeURI(e).replace(/%25/g,"%")}catch{return null}return e}const k={exec:()=>null};function g(e,t){const n=e.replace(/\|/g,((e,t,n)=>{let s=!1,r=t;for(;--r>=0&&"\\"===n[r];)s=!s;return s?"|":" |"})).split(/ \|/);let s=0;if(n[0].trim()||n.shift(),n.length>0&&!n[n.length-1].trim()&&n.pop(),t)if(n.length>t)n.splice(t);else for(;n.length<t;)n.push("");for(;s<n.length;s++)n[s]=n[s].trim().replace(/\\\|/g,"|");return n}function f(e,t,n){const s=e.length;if(0===s)return"";let r=0;for(;r<s;){const i=e.charAt(s-r-1);if(i!==t||n){if(i===t||!n)break;r++}else r++}return e.slice(0,s-r)}function d(e,t,n,s){const r=t.href,i=t.title?c(t.title):null,l=e[1].replace(/\\([\[\]])/g,"$1");if("!"!==e[0].charAt(0)){s.state.inLink=!0;const e={type:"link",raw:n,href:r,title:i,text:l,tokens:s.inlineTokens(l)};return s.state.inLink=!1,e}return{type:"image",raw:n,href:r,title:i,text:c(l)}}class x{options;rules;lexer;constructor(t){this.options=t||e.defaults}space(e){const t=this.rules.block.newline.exec(e);if(t&&t[0].length>0)return{type:"space",raw:t[0]}}code(e){const t=this.rules.block.code.exec(e);if(t){const e=t[0].replace(/^(?: {1,4}| {0,3}\t)/gm,"");return{type:"code",raw:t[0],codeBlockStyle:"indented",text:this.options.pedantic?e:f(e,"\n")}}}fences(e){const t=this.rules.block.fences.exec(e);if(t){const e=t[0],n=function(e,t){const n=e.match(/^(\s+)(?:```)/);if(null===n)return t;const s=n[1];return t.split("\n").map((e=>{const t=e.match(/^\s+/);if(null===t)return e;const[n]=t;return n.length>=s.length?e.slice(s.length):e})).join("\n")}(e,t[3]||"");return{type:"code",raw:e,lang:t[2]?t[2].trim().replace(this.rules.inline.anyPunctuation,"$1"):t[2],text:n}}}heading(e){const t=this.rules.block.heading.exec(e);if(t){let e=t[2].trim();if(/#$/.test(e)){const t=f(e,"#");this.options.pedantic?e=t.trim():t&&!/ $/.test(t)||(e=t.trim())}return{type:"heading",raw:t[0],depth:t[1].length,text:e,tokens:this.lexer.inline(e)}}}hr(e){const t=this.rules.block.hr.exec(e);if(t)return{type:"hr",raw:f(t[0],"\n")}}blockquote(e){const t=this.rules.block.blockquote.exec(e);if(t){let e=f(t[0],"\n").split("\n"),n="",s="";const r=[];for(;e.length>0;){let t=!1;const i=[];let l;for(l=0;l<e.length;l++)if(/^ {0,3}>/.test(e[l]))i.push(e[l]),t=!0;else{if(t)break;i.push(e[l])}e=e.slice(l);const o=i.join("\n"),a=o.replace(/\n {0,3}((?:=+|-+) *)(?=\n|$)/g,"\n    $1").replace(/^ {0,3}>[ \t]?/gm,"");n=n?`${n}\n${o}`:o,s=s?`${s}\n${a}`:a;const c=this.lexer.state.top;if(this.lexer.state.top=!0,this.lexer.blockTokens(a,r,!0),this.lexer.state.top=c,0===e.length)break;const h=r[r.length-1];if("code"===h?.type)break;if("blockquote"===h?.type){const 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{2,}\\n").replace(/\{2,\}/g,"*").getRegex()},W={normal:I,gfm:q,pedantic:Z},Y={normal:G,gfm:K,breaks:V,pedantic:J};class ee{tokens;options;state;tokenizer;inlineQueue;constructor(t){this.tokens=[],this.tokens.links=Object.create(null),this.options=t||e.defaults,this.options.tokenizer=this.options.tokenizer||new x,this.tokenizer=this.options.tokenizer,this.tokenizer.options=this.options,this.tokenizer.lexer=this,this.inlineQueue=[],this.state={inLink:!1,inRawBlock:!1,top:!0};const n={block:W.normal,inline:Y.normal};this.options.pedantic?(n.block=W.pedantic,n.inline=Y.pedantic):this.options.gfm&&(n.block=W.gfm,this.options.breaks?n.inline=Y.breaks:n.inline=Y.gfm),this.tokenizer.rules=n}static get rules(){return{block:W,inline:Y}}static lex(e,t){return new ee(t).lex(e)}static lexInline(e,t){return new ee(t).inlineTokens(e)}lex(e){e=e.replace(/\r\n|\r/g,"\n"),this.blockTokens(e,this.tokens);for(let e=0;e<this.inlineQueue.length;e++){const t=this.inlineQueue[e];this.inlineTokens(t.src,t.tokens)}return this.inlineQueue=[],this.tokens}blockTokens(e,t=[],n=!1){let s,r,i;for(this.options.pedantic&&(e=e.replace(/\t/g,"    ").replace(/^ +$/gm,""));e;)if(!(this.options.extensions&&this.options.extensions.block&&this.options.extensions.block.some((n=>!!(s=n.call({lexer:this},e,t))&&(e=e.substring(s.raw.length),t.push(s),!0)))))if(s=this.tokenizer.space(e))e=e.substring(s.raw.length),1===s.raw.length&&t.length>0?t[t.length-1].raw+="\n":t.push(s);else if(s=this.tokenizer.code(e))e=e.substring(s.raw.length),r=t[t.length-1],!r||"paragraph"!==r.type&&"text"!==r.type?t.push(s):(r.raw+="\n"+s.raw,r.text+="\n"+s.text,this.inlineQueue[this.inlineQueue.length-1].src=r.text);else if(s=this.tokenizer.fences(e))e=e.substring(s.raw.length),t.push(s);else if(s=this.tokenizer.heading(e))e=e.substring(s.raw.length),t.push(s);else if(s=this.tokenizer.hr(e))e=e.substring(s.raw.length),t.push(s);else if(s=this.tokenizer.blockquote(e))e=e.substring(s.raw.length),t.push(s);else if(s=this.tokenizer.list(e))e=e.substring(s.raw.length),t.push(s);else if(s=this.tokenizer.html(e))e=e.substring(s.raw.length),t.push(s);else if(s=this.tokenizer.def(e))e=e.substring(s.raw.length),r=t[t.length-1],!r||"paragraph"!==r.type&&"text"!==r.type?this.tokens.links[s.tag]||(this.tokens.links[s.tag]={href:s.href,title:s.title}):(r.raw+="\n"+s.raw,r.text+="\n"+s.raw,this.inlineQueue[this.inlineQueue.length-1].src=r.text);else if(s=this.tokenizer.table(e))e=e.substring(s.raw.length),t.push(s);else if(s=this.tokenizer.lheading(e))e=e.substring(s.raw.length),t.push(s);else{if(i=e,this.options.extensions&&this.options.extensions.startBlock){let t=1/0;const n=e.slice(1);let s;this.options.extensions.startBlock.forEach((e=>{s=e.call({lexer:this},n),"number"==typeof s&&s>=0&&(t=Math.min(t,s))})),t<1/0&&t>=0&&(i=e.substring(0,t+1))}if(this.state.top&&(s=this.tokenizer.paragraph(i)))r=t[t.length-1],n&&"paragraph"===r?.type?(r.raw+="\n"+s.raw,r.text+="\n"+s.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=r.text):t.push(s),n=i.length!==e.length,e=e.substring(s.raw.length);else if(s=this.tokenizer.text(e))e=e.substring(s.raw.length),r=t[t.length-1],r&&"text"===r.type?(r.raw+="\n"+s.raw,r.text+="\n"+s.text,this.inlineQueue.pop(),this.inlineQueue[this.inlineQueue.length-1].src=r.text):t.push(s);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}return this.state.top=!0,t}inline(e,t=[]){return this.inlineQueue.push({src:e,tokens:t}),t}inlineTokens(e,t=[]){let n,s,r,i,l,o,a=e;if(this.tokens.links){const e=Object.keys(this.tokens.links);if(e.length>0)for(;null!=(i=this.tokenizer.rules.inline.reflinkSearch.exec(a));)e.includes(i[0].slice(i[0].lastIndexOf("[")+1,-1))&&(a=a.slice(0,i.index)+"["+"a".repeat(i[0].length-2)+"]"+a.slice(this.tokenizer.rules.inline.reflinkSearch.lastIndex))}for(;null!=(i=this.tokenizer.rules.inline.blockSkip.exec(a));)a=a.slice(0,i.index)+"["+"a".repeat(i[0].length-2)+"]"+a.slice(this.tokenizer.rules.inline.blockSkip.lastIndex);for(;null!=(i=this.tokenizer.rules.inline.anyPunctuation.exec(a));)a=a.slice(0,i.index)+"++"+a.slice(this.tokenizer.rules.inline.anyPunctuation.lastIndex);for(;e;)if(l||(o=""),l=!1,!(this.options.extensions&&this.options.extensions.inline&&this.options.extensions.inline.some((s=>!!(n=s.call({lexer:this},e,t))&&(e=e.substring(n.raw.length),t.push(n),!0)))))if(n=this.tokenizer.escape(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.tag(e))e=e.substring(n.raw.length),s=t[t.length-1],s&&"text"===n.type&&"text"===s.type?(s.raw+=n.raw,s.text+=n.text):t.push(n);else if(n=this.tokenizer.link(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.reflink(e,this.tokens.links))e=e.substring(n.raw.length),s=t[t.length-1],s&&"text"===n.type&&"text"===s.type?(s.raw+=n.raw,s.text+=n.text):t.push(n);else if(n=this.tokenizer.emStrong(e,a,o))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.codespan(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.br(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.del(e))e=e.substring(n.raw.length),t.push(n);else if(n=this.tokenizer.autolink(e))e=e.substring(n.raw.length),t.push(n);else if(this.state.inLink||!(n=this.tokenizer.url(e))){if(r=e,this.options.extensions&&this.options.extensions.startInline){let t=1/0;const n=e.slice(1);let s;this.options.extensions.startInline.forEach((e=>{s=e.call({lexer:this},n),"number"==typeof s&&s>=0&&(t=Math.min(t,s))})),t<1/0&&t>=0&&(r=e.substring(0,t+1))}if(n=this.tokenizer.inlineText(r))e=e.substring(n.raw.length),"_"!==n.raw.slice(-1)&&(o=n.raw.slice(-1)),l=!0,s=t[t.length-1],s&&"text"===s.type?(s.raw+=n.raw,s.text+=n.text):t.push(n);else if(e){const t="Infinite loop on byte: "+e.charCodeAt(0);if(this.options.silent){console.error(t);break}throw new Error(t)}}else e=e.substring(n.raw.length),t.push(n);return t}}class te{options;parser;constructor(t){this.options=t||e.defaults}space(e){return""}code({text:e,lang:t,escaped:n}){const s=(t||"").match(/^\S*/)?.[0],r=e.replace(/\n$/,"")+"\n";return s?'<pre><code class="language-'+c(s)+'">'+(n?r:c(r,!0))+"</code></pre>\n":"<pre><code>"+(n?r:c(r,!0))+"</code></pre>\n"}blockquote({tokens:e}){return`<blockquote>\n${this.parser.parse(e)}</blockquote>\n`}html({text:e}){return e}heading({tokens:e,depth:t}){return`<h${t}>${this.parser.parseInline(e)}</h${t}>\n`}hr(e){return"<hr>\n"}list(e){const t=e.ordered,n=e.start;let s="";for(let t=0;t<e.items.length;t++){const n=e.items[t];s+=this.listitem(n)}const r=t?"ol":"ul";return"<"+r+(t&&1!==n?' start="'+n+'"':"")+">\n"+s+"</"+r+">\n"}listitem(e){let t="";if(e.task){const n=this.checkbox({checked:!!e.checked});e.loose?e.tokens.length>0&&"paragraph"===e.tokens[0].type?(e.tokens[0].text=n+" "+e.tokens[0].text,e.tokens[0].tokens&&e.tokens[0].tokens.length>0&&"text"===e.tokens[0].tokens[0].type&&(e.tokens[0].tokens[0].text=n+" "+e.tokens[0].tokens[0].text)):e.tokens.unshift({type:"text",raw:n+" ",text:n+" "}):t+=n+" "}return t+=this.parser.parse(e.tokens,!!e.loose),`<li>${t}</li>\n`}checkbox({checked:e}){return"<input "+(e?'checked="" ':"")+'disabled="" type="checkbox">'}paragraph({tokens:e}){return`<p>${this.parser.parseInline(e)}</p>\n`}table(e){let t="",n="";for(let t=0;t<e.header.length;t++)n+=this.tablecell(e.header[t]);t+=this.tablerow({text:n});let s="";for(let t=0;t<e.rows.length;t++){const r=e.rows[t];n="";for(let e=0;e<r.length;e++)n+=this.tablecell(r[e]);s+=this.tablerow({text:n})}return s&&(s=`<tbody>${s}</tbody>`),"<table>\n<thead>\n"+t+"</thead>\n"+s+"</table>\n"}tablerow({text:e}){return`<tr>\n${e}</tr>\n`}tablecell(e){const t=this.parser.parseInline(e.tokens),n=e.header?"th":"td";return(e.align?`<${n} align="${e.align}">`:`<${n}>`)+t+`</${n}>\n`}strong({tokens:e}){return`<strong>${this.parser.parseInline(e)}</strong>`}em({tokens:e}){return`<em>${this.parser.parseInline(e)}</em>`}codespan({text:e}){return`<code>${e}</code>`}br(e){return"<br>"}del({tokens:e}){return`<del>${this.parser.parseInline(e)}</del>`}link({href:e,title:t,tokens:n}){const s=this.parser.parseInline(n),r=u(e);if(null===r)return s;let i='<a href="'+(e=r)+'"';return t&&(i+=' title="'+t+'"'),i+=">"+s+"</a>",i}image({href:e,title:t,text:n}){const s=u(e);if(null===s)return n;let r=`<img src="${e=s}" alt="${n}"`;return t&&(r+=` title="${t}"`),r+=">",r}text(e){return"tokens"in e&&e.tokens?this.parser.parseInline(e.tokens):e.text}}class ne{strong({text:e}){return e}em({text:e}){return e}codespan({text:e}){return e}del({text:e}){return e}html({text:e}){return e}text({text:e}){return e}link({text:e}){return""+e}image({text:e}){return""+e}br(){return""}}class se{options;renderer;textRenderer;constructor(t){this.options=t||e.defaults,this.options.renderer=this.options.renderer||new te,this.renderer=this.options.renderer,this.renderer.options=this.options,this.renderer.parser=this,this.textRenderer=new ne}static parse(e,t){return new se(t).parse(e)}static parseInline(e,t){return new se(t).parseInline(e)}parse(e,t=!0){let n="";for(let s=0;s<e.length;s++){const r=e[s];if(this.options.extensions&&this.options.extensions.renderers&&this.options.extensions.renderers[r.type]){const e=r,t=this.options.extensions.renderers[e.type].call({parser:this},e);if(!1!==t||!["space","hr","heading","code","table","blockquote","list","html","paragraph","text"].includes(e.type)){n+=t||"";continue}}const i=r;switch(i.type){case"space":n+=this.renderer.space(i);continue;case"hr":n+=this.renderer.hr(i);continue;case"heading":n+=this.renderer.heading(i);continue;case"code":n+=this.renderer.code(i);continue;case"table":n+=this.renderer.table(i);continue;case"blockquote":n+=this.renderer.blockquote(i);continue;case"list":n+=this.renderer.list(i);continue;case"html":n+=this.renderer.html(i);continue;case"paragraph":n+=this.renderer.paragraph(i);continue;case"text":{let r=i,l=this.renderer.text(r);for(;s+1<e.length&&"text"===e[s+1].type;)r=e[++s],l+="\n"+this.renderer.text(r);n+=t?this.renderer.paragraph({type:"paragraph",raw:l,text:l,tokens:[{type:"text",raw:l,text:l}]}):l;continue}default:{const e='Token with "'+i.type+'" type was not found.';if(this.options.silent)return console.error(e),"";throw new Error(e)}}}return n}parseInline(e,t){t=t||this.renderer;let n="";for(let s=0;s<e.length;s++){const r=e[s];if(this.options.extensions&&this.options.extensions.renderers&&this.options.extensions.renderers[r.type]){const e=this.options.extensions.renderers[r.type].call({parser:this},r);if(!1!==e||!["escape","html","link","image","strong","em","codespan","br","del","text"].includes(r.type)){n+=e||"";continue}}const i=r;switch(i.type){case"escape":case"text":n+=t.text(i);break;case"html":n+=t.html(i);break;case"link":n+=t.link(i);break;case"image":n+=t.image(i);break;case"strong":n+=t.strong(i);break;case"em":n+=t.em(i);break;case"codespan":n+=t.codespan(i);break;case"br":n+=t.br(i);break;case"del":n+=t.del(i);break;default:{const e='Token with "'+i.type+'" type was not found.';if(this.options.silent)return console.error(e),"";throw new Error(e)}}}return n}}class re{options;block;constructor(t){this.options=t||e.defaults}static passThroughHooks=new Set(["preprocess","postprocess","processAllTokens"]);preprocess(e){return e}postprocess(e){return e}processAllTokens(e){return e}provideLexer(){return this.block?ee.lex:ee.lexInline}provideParser(){return this.block?se.parse:se.parseInline}}class ie{defaults={async:!1,breaks:!1,extensions:null,gfm:!0,hooks:null,pedantic:!1,renderer:null,silent:!1,tokenizer:null,walkTokens:null};options=this.setOptions;parse=this.parseMarkdown(!0);parseInline=this.parseMarkdown(!1);Parser=se;Renderer=te;TextRenderer=ne;Lexer=ee;Tokenizer=x;Hooks=re;constructor(...e){this.use(...e)}walkTokens(e,t){let n=[];for(const s of e)switch(n=n.concat(t.call(this,s)),s.type){case"table":{const e=s;for(const s of e.header)n=n.concat(this.walkTokens(s.tokens,t));for(const s of e.rows)for(const e of s)n=n.concat(this.walkTokens(e.tokens,t));break}case"list":{const e=s;n=n.concat(this.walkTokens(e.items,t));break}default:{const e=s;this.defaults.extensions?.childTokens?.[e.type]?this.defaults.extensions.childTokens[e.type].forEach((s=>{const r=e[s].flat(1/0);n=n.concat(this.walkTokens(r,t))})):e.tokens&&(n=n.concat(this.walkTokens(e.tokens,t)))}}return n}use(...e){const t=this.defaults.extensions||{renderers:{},childTokens:{}};return e.forEach((e=>{const n={...e};if(n.async=this.defaults.async||n.async||!1,e.extensions&&(e.extensions.forEach((e=>{if(!e.name)throw new Error("extension name required");if("renderer"in e){const n=t.renderers[e.name];t.renderers[e.name]=n?function(...t){let s=e.renderer.apply(this,t);return!1===s&&(s=n.apply(this,t)),s}:e.renderer}if("tokenizer"in e){if(!e.level||"block"!==e.level&&"inline"!==e.level)throw new Error("extension level must be 'block' or 'inline'");const n=t[e.level];n?n.unshift(e.tokenizer):t[e.level]=[e.tokenizer],e.start&&("block"===e.level?t.startBlock?t.startBlock.push(e.start):t.startBlock=[e.start]:"inline"===e.level&&(t.startInline?t.startInline.push(e.start):t.startInline=[e.start]))}"childTokens"in e&&e.childTokens&&(t.childTokens[e.name]=e.childTokens)})),n.extensions=t),e.renderer){const t=this.defaults.renderer||new te(this.defaults);for(const n in e.renderer){if(!(n in t))throw new Error(`renderer '${n}' does not exist`);if(["options","parser"].includes(n))continue;const s=n,r=e.renderer[s],i=t[s];t[s]=(...e)=>{let n=r.apply(t,e);return!1===n&&(n=i.apply(t,e)),n||""}}n.renderer=t}if(e.tokenizer){const t=this.defaults.tokenizer||new x(this.defaults);for(const n in e.tokenizer){if(!(n in t))throw new Error(`tokenizer '${n}' does not exist`);if(["options","rules","lexer"].includes(n))continue;const s=n,r=e.tokenizer[s],i=t[s];t[s]=(...e)=>{let n=r.apply(t,e);return!1===n&&(n=i.apply(t,e)),n}}n.tokenizer=t}if(e.hooks){const t=this.defaults.hooks||new re;for(const n in e.hooks){if(!(n in t))throw new Error(`hook '${n}' does not exist`);if(["options","block"].includes(n))continue;const s=n,r=e.hooks[s],i=t[s];re.passThroughHooks.has(n)?t[s]=e=>{if(this.defaults.async)return Promise.resolve(r.call(t,e)).then((e=>i.call(t,e)));const n=r.call(t,e);return i.call(t,n)}:t[s]=(...e)=>{let n=r.apply(t,e);return!1===n&&(n=i.apply(t,e)),n}}n.hooks=t}if(e.walkTokens){const t=this.defaults.walkTokens,s=e.walkTokens;n.walkTokens=function(e){let n=[];return n.push(s.call(this,e)),t&&(n=n.concat(t.call(this,e))),n}}this.defaults={...this.defaults,...n}})),this}setOptions(e){return this.defaults={...this.defaults,...e},this}lexer(e,t){return ee.lex(e,t??this.defaults)}parser(e,t){return se.parse(e,t??this.defaults)}parseMarkdown(e){return(t,n)=>{const s={...n},r={...this.defaults,...s},i=this.onError(!!r.silent,!!r.async);if(!0===this.defaults.async&&!1===s.async)return i(new Error("marked(): The async option was set to true by an extension. 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