Initial crossword addition and arcade redesign

src/lib/arcade/registry.ts

@@ -1,4 +1,5 @@
 import { parseConnectionsImportBatch } from "@/lib/arcade/connectionsImport";
+import { parseCrosswordImportBatch } from "@/lib/arcade/crosswordImport";
 import type { ArcadeGameKey } from "@/types/arcade";
 
 const CONNECTIONS_PROMPT = `You are generating a Connections study game as strict JSON.
@@ -18,15 +19,39 @@ Rules:
 Material:
 [paste your notes or lecture content here]`;
 
+const CROSSWORD_PROMPT = `You are generating one Crossword study game as strict JSON.
+Return exactly one JSON object with no Markdown fence or commentary.
+
+Use this schema:
+{"schemaVersion":1,"type":"crossword","name":"...","description":"...","settings":{"allowInstantCheck":false,"allowHints":true},"content":[{"id":"entry-1","answer":"...","displayAnswer":"...","clue":"...","alternateClue":"...","explanation":"..."}]}
+
+Rules:
+- Generate exactly 80 entries in the content array.
+- Every answer must be unique after spaces, punctuation, hyphens, apostrophes, and capitalization are removed.
+- Answers must contain 3 to 18 letters after normalization. Do not use digits.
+- Prefer terminology with shared letters so the application can construct a dense connected crossword.
+- Each clue must uniquely identify its answer without repeating the answer.
+- Provide a genuinely useful alternate clue and a concise educational explanation for every entry.
+- Use displayAnswer to preserve spaces, punctuation, or natural capitalization when needed.
+- Base all content strictly on the study material below.
+
+Material:
+[paste your notes or lecture content here]`;
+
 export const ARCADE_SERVER_REGISTRY = {
   connections: {
     schemaVersion: 1,
     preview: parseConnectionsImportBatch,
     defaultInstructions: CONNECTIONS_PROMPT,
   },
+  crossword: {
+    schemaVersion: 1,
+    preview: parseCrosswordImportBatch,
+    defaultInstructions: CROSSWORD_PROMPT,
+  },
 } satisfies Record<ArcadeGameKey, {
   schemaVersion: number;
-  preview: typeof parseConnectionsImportBatch;
+  preview: (rawJson: string) => unknown;
   defaultInstructions: string;
 }>;