Fix Docker image missing shared/ directory; v2.0.2

shared/bible-books.js was added in the consolidation commit but the
Dockerfile had no COPY line for it, causing a boot crash in production.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Dockerfile

@@ -20,6 +20,7 @@ COPY package.json ./package.json
 COPY dist ./dist
 COPY server.js ./server.js
 COPY server/ ./server/
+COPY shared/ ./shared/
 COPY A_Study_of_Titus.pdf ./A_Study_of_Titus.pdf
 
 # Copy seed data to a separate directory so the entrypoint can seed /app/data