feat(content): prefer Greek-name Homer translations; voyage app spec, design record and plan

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

src/content/routes.ts

@@ -3,7 +3,12 @@ import { join, resolve, sep } from "node:path";
 import { scanLibrary } from "./library";
 import { splitBooks, type HomerBook } from "./homer";
 
-const HOMER_FILES = { odyssey: "The Odyssey.txt", iliad: "The Illiad.txt" } as const;
+// Preferred first: translations that keep the Greek names (Butcher & Lang, Gutenberg #1728; Lang, Leaf
+// & Myers, #3059). Butler's (#1727, #2199) use Roman names and are the fallback.
+const HOMER_FILES = {
+  odyssey: ["The Odyssey (Butcher and Lang).txt", "The Odyssey.txt"],
+  iliad: ["The Iliad (Lang, Leaf and Myers).txt", "The Illiad.txt"],
+} as const;
 const HOMER_DIR = "Homers the Odyssey Book";
 const notFound = () => new Response("Not found", { status: 404 });
 // Bun reports FLAC as audio/x-flac; audio/flac is the registered type.
@@ -12,8 +17,8 @@ const contentType = (file: Blob) => (file.type.startsWith("audio/x-flac") ? "aud
 const bookCache = new Map<string, HomerBook[]>();
 
 function homerBooks(dir: string, work: keyof typeof HOMER_FILES): HomerBook[] | null {
-  const path = join(dir, HOMER_DIR, HOMER_FILES[work]);
-  if (!existsSync(path)) return null;
+  const path = HOMER_FILES[work].map((f) => join(dir, HOMER_DIR, f)).find((p) => existsSync(p));
+  if (!path) return null;
   let books = bookCache.get(path);
   if (!books) {
     books = splitBooks(readFileSync(path, "utf8"));